Xrassa Coal Preparation Plant Design Instruction

AA 矿业集团—埃克萨松选煤厂
设计说明书
AA-PLC --- Xrassa
Coal Handling and Preparation Plant
Design Instruction
Project Supervisor. Steven Heng Huang
Project Manager. Camus Daoguo Zhang
Process Engineer. Jack Shuangyin Zhou
北京浩沃特矿业技术有限公司
Beijing HOT Mining Tech Co Ltd
www.hot-mining.com www.miningmes.com
2011 年 11 月
Nov. 2011

Xrassa Coal Preparation Plant, by Beijing HOT Mining Tech Co Ltd
[Design Instruction] Page 1 of 135
目录 contents
1. 总论..........................................................................................................................................................3
1.GENERAL................................................................................................................................................3
1.1 项目概述............................................................................................................................................ 3
1.1 PROJECT DESCRIPTION.........................................................................................................................3
1.2 项目承接公司简介............................................................................................................................ 3
1.2 BRIEF INTRODUCTION OF THE COMPANY UNDERTAKING THE PROJECT..............................................3
1.3 工程概况............................................................................................................................................ 5
1.3 BRIEF DESCRIPTION OF THE PROJECT..................................................................................................5
1.4 设计特点............................................................................................................................................ 9
1.4 DESIGN FEATURES............................................................................................................................... 9
2. 编制依据和工程范围............................................................................................................................11
2. DESIGN BASIS AND SCOPE OF WORKS.......................................................................................11
2.1 编制依据.......................................................................................................................................... 11
2.1 DESIGN BASIS.................................................................................................................................... 11
2.2 工程范围及工作接囗...................................................................................................................... 11
2.2 SCOPE OF WORKS AND WORK INTERFACE......................................................................................... 11
2.3 特别声明........................................................................................................................................... 14
2.3 SPECIAL NOTICE.................................................................................................................................14
3. 选煤厂类型、建设规模、工作制度和厂址选择............................................................................... 15
3. TYPE, CONSTRUCTION MAGNITUDE, WORK ATTENDANCE SYSTEM, AND LOCATION
OF THE COAL WASHERY.................................................................................................................... 15
3.1 选煤厂类型...................................................................................................................................... 15
3.1 TYPE OF THE COAL WASHERY............................................................................................................15
3.2 建设规模和工作制度...................................................................................................................... 15
3.2 CONSTRUCTION MAGNITUDE AND WORK ATTENDANCE SYSTEM......................................................15
3.3 厂址选择.......................................................................................................................................... 15
3.3 PLANT LOCATION...............................................................................................................................15
4. 自然条件及煤质特征............................................................................................................................16
4. NATURAL CONDITION AND COAL QUALITY FEATURES......................................................16
4.1 位置.................................................................................................................................................. 16
4.1 LOCATION.......................................................................................................................................... 16
4.2 自然条件.......................................................................................................................................... 16
4.2 NATURAL CONDITIONS.......................................................................................................................16
4.3 煤质特征.......................................................................................................................................... 16
4.3 COAL QUALITY FEATURES................................................................................................................. 16
5. 工程设计................................................................................................................................................35
5. ENGINEERING DESIGN................................................................................................................... 35
5.1 选煤工艺.......................................................................................................................................... 35
5.1 WASHING PROCESS............................................................................................................................ 35
5.2 电气.................................................................................................................................................. 79
5.2 POWER SUPPLY AND DISTRIBUTION, AND AUTOMATION..................................................................... 79

5.3 给水排水.......................................................................................................................................... 98
5.3 WATER SUPPLY AND DRAINAGE.........................................................................................................98
5.4 采暖、通风及除尘........................................................................................................................ 106
5.4 HEATING, VENTILATION AND DUST REMOVAL.................................................................................106
5.5 建筑物与构筑物............................................................................................................................ 108
5.5 BUILDINGS AND STRUCTURES..........................................................................................................108
5.6 工业场地总平面布置.................................................................................................................... 124
5.6GENERAL PLAN LAYOUT OF INDUSTRIAL SITE..................................................................................124
6.劳动定员、主要经济技术指标............................................................................................................128
6. DETERMINATION OF LABOR REQUIREMENT AND MAIN TECHNICAL/ECONOMICAL
INDICES..................................................................................................................................................128
6.1 劳动定员......................................................................................................................................... 128
6.1 LABOR REQUIREMENT..................................................................................................................... 128
6.2 劳动生产率.................................................................................................................................... 129
6.2 LABOR PRODUCTIVITY..................................................................................................................... 129
6.3 主要技术指标................................................................................................................................ 129
6.3 PRINCIPAL TECHNICAL INDICES....................................................................................................... 129
7. 澄清和例外..........................................................................................................................................132
7. CLARIFICATION AND EXCEPTION............................................................................................132
7.1 澄清和例外.................................................................................................................................... 132
7.1 CLARIFICATION AND EXCEPTION..................................................................................................... 132
7.2 用户的责任.................................................................................................................................... 132
7.2 USER’S OBLIGATION........................................................................................................................ 132

1. 总论
1.General
1.1 项目概述
1.1 Project Description
埃克萨松超级热电站装机容量为 2340MW，4 x 210MW 和 3 x 500MW7 个发
电机组。煤天需煤量约为 40000 吨，其原料煤来自周边的 A、B、C、D 等露天煤
矿。
Xrassa Super Thermal Power Station is designed with an installed capacity of
2340MW, having 7 generating sets (4 x 210MW and 3 x 500MW). It needs
approximately 40,000t of coal per day and the feed coal is sourced from opencast coal
mines A, B, C, and D in the vicinity.
埃克萨松选煤厂是埃克萨松火电站的配套选煤厂，原煤的输入及产品煤的输
出接口均在现有输煤系统基础上进行。
Xrassa Coal Washery is a complementary coal preparation plant to Xrassa Thermal
Power Station. The raw coal input and the coal product output interfaces are based on
the existing coal handling system.
1.2 项目承接公司简介
1.2 Brief Introduction of the Company Undertaking the Project
浩特是世界领先的选煤及选矿工程技术公司（ www.hot-mining.com ）。自
公司成立以来，公司不断推出的先进、成熟的技术，使建设项目具有最短的施工
工期和调试时间、最低的运行成本，从而成为众多煤炭企业的固定合作伙伴。浩
特公司的专家在其它矿物分选方面也有很深的造诣和业绩。
After it’s founded, HOT Mining ( www.hot-mining.com ), a specialized coal and
mineral process engineering company with most powerful strength presently in the
world has released many sophisticated & mature techniques, enabled construction
project to realize shortest construction period and debugging time and minimum
running cost and become regular partner of numerous coal enterprises. HOT Mining’s

experts have actualized highest technical level and remarkable achievements in the
separation of other minerals.
浩特公司的业务遍及全球主要产煤国，已在中国、蒙古国等国家成功地完成
了许多项目。项目内容包括选煤厂初步设计、选煤厂及其厂外系统的总承包建设
和选煤厂的管理运营服务等。浩特同世界上主要的大型煤炭企业都已建立良好的
业务合作关系，这些公司包括：中国神华集团、力拓、蒙古能源等。
With its operations in main coal production countries in the world, HOT Mining
has successfully completed many projects in China, Mongolia, including preliminary
design of coal washery, general contracting and construction of coal washery and its
off-site systems and managing and operating services of coal washery. HOT Mining has
already set up business partnership with main large-size coal enterprises in the world,
including: China Shenhua, Rio Tinto, Mongolian Mining Corporation, etc.
浩特公司在低成本高效率工艺设计控制技术方面的独到见解得益于多年来在
世界范围内各种项目经验的积累。为了更好的服务世界范围的客户，浩特公司在
世界四大洲均设有办事处，各办事处之间经常进行人员及技术的交流，使先进的
技术在最短的时间内得到传播和使用，在不增加额外技术费用的情况下为客户提
供更快更好的服务。
HOT Mining enjoys unique solutions to the design and control technique of
low-cost and high-efficiency process in light of the experiences of various projects
worldwide in recent years. To provide better services for the clients worldwide, it has
set up its offices in four continents in the world, which frequently carry out the
exchanges on technology and personnel so as to popularize and use the sophisticated
techniques immediately and offer better services to clients without additional technical
charge.
浩特公司自 2012 年开始进入中国市场，并在北京设立了代表处和专业的工程
技术公司，为中国用户提供更加全面和及时的服务。北京浩沃特矿业技术有限公
司是美国浩特公司在中国市场开展项目的主体企业，全权负责中国市场的开发和
项目执行。公司致力于把世界最先进的选煤技术、设备和运营管理理念引进并运
用到项目实践中来，为用户提供全方位的技术服务，真正体现选煤厂总承包项目
为业主省心、省时、省钱的特点。

HOT Mining established representative office and specialized engineering
technology corporation in Beijing in 2011; and provided more overall and timely
services for the users in China, Beijing HOT Mining Tech Co Ltd. It’s devoted to
introduce & apply state-of-the-art coal dressing technique, equipment and operating and
management philosophy in the world in the project, provide users with all-around
technical services and realize the function of general-contracting enterprise of coal
washery i.e. less input of time, efforts and cost.
浩特公司在江油和南昌分别设立了设备工厂，为中国用户提供进口设备的国
内组装、储备、维修、零部件供应以及与之相关的技术支持和售后服务。
HOT Mining has set up its factories in Jiangyou and Nanchang for providing
relevant technical support and after-sales services for the users in China, including
assembly, storage, repair and parts and components supply of imported equipments.
1.3 工程概况
1.3 Brief Description of the Project
（1）基本情况 Basic Information
 工作制度：年工作 330d，日工作 16h，每天 2 班生产，1 班检修，全年生
产 5280h；
 Working Shedule：330 work days per year, 16 work hours per day, two
production shifts per day, one shift for overhaul, totally 5280 production
hours per year;
 处理能力：年入洗原煤 1400 万吨；
 Processing capacity: raw coal dressing of 14 million tons annually,
（2）厂址选择 Plant location
本项目属热电厂的配套工程，工业场地在现有电厂的输煤系统场地，便于利
用现有输煤系统。
This is complementary works to the thermal power station. The project site is the
coal handling system site of the existing power station, making it convenient to utilize
this existing coal handling system.

（3）煤源及煤质 Coal source and quality
选煤厂原料煤来自周边的 A、B、C、D 等煤矿。
The feed coal to the washery is supplied from A、B、C、D coal mines nearby.
（4）分选方法 Separation and Process Methods
根据电厂用煤要求和产品定位的要求，采用的分选方法为：
Given the coal requirement by the power station and the coal quality requirement,
separation methods include:
 200～13mm 采用重介浅槽分选；
 Heavy media vessel (HMV) for coal sized 200~13mm;
 13～1.5mm 两产品重介质旋流器分选；
 Heavy media cyclone (HMC) for coal sized 13~1.5mm;
 1.5～0.15mm 粗煤泥采用螺旋分选机分选；
 Spiral separator for coarse slime coal sized 1.5~0.15mm;
 0.25～0 mm 细煤泥采用筛网沉降离心机+压滤机联合脱水回收。
 Washed mixed coal: ash content≤30%, size 13~0mm, for power generation use.
（5）产品结构 Product structure
洗混煤：灰分≤30%，粒度 13～0mm，供电厂发电。
Washed mixed coal: ash content≤30%, size 13~0mm, for power generation use.
（6）设备选型 Selection of equipment model
 设备选型保证设备技术先进、性能可靠、高效低耗、稳定生产，适用性强；
 Equipment model shall be such that the equipment is advanced in technology,
reliable in performance, high in efficiency and low in power consumption,
stable in production, and strong in adaptability;
 主要工艺、洗选设备如原煤破碎机、重介浅槽分选机、重介质旋流器、分
级旋流器、产品脱介筛、精煤离心脱水机、煤泥离心机、筛网沉降离心机、
高频筛、稀介磁选机等采用成熟可靠设备；
 Major process and separation equipment like raw coal crusher, HMV, HMC,
classifying cyclone, media draining screen, cleaned coal centrifugal dryer,
slime coal centrifuge, screen bowl centrifuge, hi-frequency screen, and dilute
media magnetic separator are sourced from proven and reliable models;
 尽可能选用与规模和系统相配套的大型设备，以简化系统、方便管理；

 Large equipment that is compatible with the magnitude and the system should
be used whenever possible so as to simplify the system and to assist
management;
 设备的型式、规格和台数考虑到可满足不同入洗量要求，以便根据煤质波
动灵活组织生产；
 The type, specs, and number of equipment shall meet the workload of washing
and be flexible enough to accommodate production under coal quality
fluctuations;
 同类设备（带式输送机、刮板机、泵类、起重设备、采暖通风设备、照明
设备等）及大型部件（包括电动机、减速器、胶带等）采用同一类制造厂
家，减少备品备件种类和降低采购管理难度；
 Similar equipment (belt conveyors, scrapers, pumps, lifting equipment, HVAC,
and lighting facilities) and large components (including motors, speed reducers,
and rubber belts) shall be sourced from the same kind of manufacturers so as
to minimize spare part types and reduce procurement difficulties;
 溜槽、管路、料桶等损耗部件设计、布置合理，材料选择基于耐用、维护
方便和经济性。
 Wearable parts like chute, pipeline, and charging bucket should be reasonably
designed and arranged and the material shall be selected based on endurance,
easy maintenance, and economy criteria.
（7）数质量控制 Quantity and quality control
 实现重介密度自动控制；Automatic control of heavy media density;
 实现各种桶的液位自动控制；Automatic liquid level control for various buckets;
 实现絮凝剂自动制备及添加；Automatic preparation and dosing of flocculant;
 排污泵液位自动控制；Automatic liquid level control for sewage pump;
 高压电动机温度监测自动控制；Automatic temperature monitoring and control
for high-voltage motor;
 实现带式输送机故障监测保护。Fault monitoring and protection of belt conveyor.
（8）配电及电气 Power distribution and electrical works
 PLC 及上位系统选用国际一流设备，集中控制系统达到国内领先水平；
 PLC and upper system should be internationally first-rate products, the
centralized control system should be of the leading level on domestic market;
 设备运行工况及报警纳入集控系统，对分选系统进行集中控制；

 quipment operation condition and alarming should be included in the
centralized control system so that the separation system may be controlled
centrally;
 集控室内工控机上可显示工艺流程、设备运行状况、各种液位及各种工艺
参数值，并形成历史记录；
 EThe IPC in the centralized control room may display the process flow,
equipment operation condition, various liquid levels, and different process
parameters, and history records may be maintained;
（9）主要技术经济指标 Main technological and economical indices
 数量效率： ≥95%
 Recovery efficiency:≥95%
 生产补充水： <0.10m³/t 原煤
 Production makeup water: <0.10m³ per ton of raw coal
 耗电量： 4.78 度/t 原煤
 Power consumption: 4.78kWh per ton of raw coal
 介耗： ﹤1.5kg/t 入洗原煤(磁铁矿粉的磁性物含量≥95％，≤325
目含量≥90％，密度≥4.5t/m³。)
 Media consumption: <1.5kg per ton of raw coal (magnetic matter content of
magnetite dust ≥ 95%, content of particles ≤ No. 325 mesh ≥90%, density
≥4.5t/m³).
（10）主要建筑物 Major buildings
筛分破碎车间、原煤仓、主厂房、浓缩车间、矸石仓、皮带栈桥及转载点、
介质库、空压机房、变配电室、生产消防水池。
Major buildings include screen and crusher house, raw coal silo, main house,
thickening house, refuse silo, belt conveyor trestle and transfer point (TP), magnetite
storage, air compressor room, motor control center (MCC), and production &
firefighting water pool.

1.4 设计特点
1.4 Design Features
 可根据煤质情况及灵活调整入洗量，以保证电厂用煤质量稳定，操作灵活
方便，同时降低生产成本；
 It is possible to adjust flexibly the washing workload according to coal quality so as
to ensure stable coal quality for the power station; flexible and convenient operation
at reduced production cost;
 采用重介分选系统，提高分选精度和精煤回收率，确保企业经济效益；
 Heavy media separation system is used to improve separation precision and recovery
rate of cleaned coal so as to ensure the corporate economic efficiency;
 工艺平面布置环节简单，系统紧凑，占地面积小，与工业广场现有建构筑
物协调、美观。
 Simple process plan layout, concise system, small footprint, compatible and
harmonized with existing buildings, and pleasing to the eye;
 生产系统布置灵活、简捷，保留原输煤系统的全部功能，选煤厂出现故障
时，不影响电厂；
 Flexible and simple layout of the production system, with the complete functions of
existing coal handling system retained so that the Power Station production is not
interrupted in the event of any fault;
 介质系统先进、简单、可靠、自动化程度高，易于操作和管理，密度控制
精度高；
 Advanced, reliable, highly automatic, and simple media system, making it easy to
operation and manage; high-precision control of density;
 粗细煤泥分别采用不同的脱水设备，确保产品水分，提高总电煤产率和经
济效益，适应煤层顶底板的变化，确保系统的稳定性；
 Different dewatering equipment is used for coarse and fine slime coal to ensure the
product water content, improve total steam coal yield and economic benefit, suit the
floor and roof variation of coal seam, and ensure system stability
 控制系统完善可靠，自动化水平高，便于生产管理，确保建成一流现代化
选煤厂；
 Sound, reliable, and highly automatic control system, convenient for production
management, ensuring a first-class modern coal washery

 主厂房布置采用集重介分选系统、粗煤泥分选、细煤泥脱水回收系统于一
体的联合厂房，设备布置合理紧凑，分区明确，整齐美观，易于管理。
 For the main house, a combinational house is used that integrates heavy media
separation system, coarse slime coal separation, fine slime coal dewatering and
recovery system; reasonable and compact layout of equipment, clear zoning, tidy and
pleasant arrangement, making management an easy job;
 产品走向灵活，可直接给入到电厂输煤皮带，降低全厂运行费用。
 Flexible product movement line so that product may be delivered to the coal belt
conveyor of the power station to minimize the operation cost of the plant.

2. 编制依据和工程范围
2. Design Basis and Scope of Works
2.1 编制依据
本设计编制依据包括以下内容：
1）业主提供的现场图纸及资料。
2.1 Design Basis
The design basis includes:
1) Site drawings and information made available by the Enduser.
2.2 工程范围及工作接囗
2.2 Scope of Works and Work Interface
该项目主要包括工艺设计、设备供应、工程建设、安装调试、技术服务等工
作。
The project mainly includes process engineering, equipment procurement, construction,
installation, commissioning, and technical service.
工程范围为：从原煤给入到选煤厂入料皮带或刮板机开始（包括入料溜槽以
及相应的改造），到产品煤给入到相关皮带机（含相关改造）、矸石入矸石仓（含
矸石仓）为止的全部生产系统，包括全部土建、机械设备、电气配电、室内照明、
采暖通风除尘、消防、卫生、防雷、起重、检修、控制保护、工业电视系统、通
讯系统的设计、施工、供货、运输、安装、调试、技术服务和培训工作。
The scope of works: The entire production system starting from raw coal feeding to the
feed belt or scraper (including feed chute and associated modification), to product coal supplied
to relevant belt conveyors (including associated modification), and ending at refuse being
admitted to the refuse silo (including refuse silos), including design, construction, procurement,
transport, installation, commissioning, technical service, and training related to all civil works,
mechanical equipment, electrical and power distribution, interior lighting, HVAC and dust
removal, firefighting, hygiene, lightning arresting, lifting, maintenance, control and protection,
industrial television, and communication system.
包括的单项工程为：

（1）筛分破碎车间
（2）原煤仓
（3）主厂房
（4）浓缩车间
（5）矸石仓
（6）介质库
（7）空压机房
（8）变配电室
（9）相关栈桥及转载点
（10）生产、消防水池及泵房
（11）厂区道路及硬化
Individual projects include:
（1） Screen and crusher house
（2） Raw coal silo
（3） Main house
（4） Thickening house
（5） Refuse silo
（6） Magnetite storage
（7） Air compressor room
（8） Motor control center
（9） Associated trestles and transfer points
（10） Production and firefighting water pool and pump house
（11）Plant road and pavement
3）项目分界及接口
（1）包括上述各单位工程的土建、机电设备购置及安装。
（2）包括上述各单位工程的设备动力配电、自动化控制、室内照明(含栈桥
的照明)、空调、给排水、消防、通风、除尘。
（3）包括上述各单位工程建筑物的基础工程、主体结构、室内外粉饰工程、
防雷工程及配套设施。
（4）包括上述各单位工程范围内动力、控制、检测缆线的吊挂设施（电缆

桥架、防护套管等）、敷设设施。
（5）包括总承包施工期间产生的各种建筑垃圾、基础开挖产生的余土外排
清理工程（运距 2 公里以内）。
（6）水源：由业主将生产、消防水引入到新建的生产、消防水池
（7）电源：引自电厂变电站 11kV 母线段
3) Project boundary and interface
（1） Including civil works and electromechanical equipment procurement and
installation for the above individual projects.
（2） Including power distribution and automatic control for equipment of the above
individual projects, and associated interior lighting (including trestle lighting), air
conditioning, water supply and drainage, firefighting, ventilation and dust
removal.
（3） Including oundation works, main structure works, interior and exterior finishing,
lightning arrest works, and associated facilities for the buildings of the above
individual projects.
（4） Including suspension facilities (cable trestle, and protection casing) and laying
facilities for power, control, and detection cables within the above individual
projects.
（5） Haulage of various construction wastes or surplus earthwork arising from
foundation excavation (haulage distance not exceeding 2km).
（6） Water source: the Enduser is to provide production and firefighting water to the
newly constructed production and firefighting water pools.
（7） Power supply: From the 11kV transformer substation of the power plant.
4）工程范围内不包括的内容
（1）工业场地的平整到设计标高、绿化。
（2）为实施本工程所需的勘察工作。
（3）施工期间遇到的原有地下、地上线管、线的改造工作。
（4）室外照明
4）Work not included in the scope of works
（1）Preparation of industrial site to the design level, greening works;
（2）Investigation work necessary for the completion of the works.
（3 ） Relocation of existing surface or underground pipelines or cables encountered in

construction.
（4）Outdoor lighting.
2.3 特别声明
2.3 Special Notice
本设计仅包括 2.2 条所述的选煤厂运行所必须的生产设施和生产辅助设施，必
要的厂区道路和硬化。不包含选煤厂人员日常生活所需要的宿舍、食堂、浴室、
办公楼、卫生设施等生活福利设施；不包括可能需要的机修设施以及煤质采样、
制样、化验等分析设施。
This design only includes the production and auxiliary facilities and the plant road and
pavement necessary for the operation of the washery defined in Section 2.2. It does not include
the dormitory, canteen, shower room, office, sanitary facilities or other amenities necessary for
everyday life of the washery staff; mechanical maintenance facilities, coal sampling, specimen
preparation, and analysis facilities for coal quality are not included either.
由于目前没有工程地质勘察资料，本次设计建、构筑物的地基处理工程参照
附近的地质资料。当工程地质详细勘察报告出版后，需根据工程地质勘察资料对
地基处理工程量作调整。
This design of building’s subsoil improvement works references vicinity’s geological
investigation data, due to the absence of engineering geological investigation data. After the
availability of engineering geological investigation reported the quantity of work will be
adjusted according to the new data.

3. 选煤厂类型、建设规模、工作制度和厂址选择
3. Type, Construction Magnitude, Work Attendance System, and
Location of the Coal Washery
3.1 选煤厂类型
3.1 Type of the Coal Washery
埃克萨松选煤厂为埃克萨松火电站的配套选煤厂，属于用户型特大型选煤厂，
选煤厂原煤均来自周边的露天煤矿。
Being a coal washery complementary to Xrassa Thermal Power Station, Xrassa Coal
Washery is a user-operating extra large coal separation plant, with all its raw coal sourced from
neighboring opencast mines.
3.2 建设规模和工作制度
3.2 Construction Magnitude and Work Attendance System
工作制度：330d/a，16h/d，5280h/a
Working Shedule: 330d/a, 16h/d, 5280h/a
生产能力：14.0Mt/a，42424t/d，2652t/h；
Production capacity: 14.0Mt/a, 42424t/d, 2652t/h;
3.3 厂址选择
3.3 Plant Location
选煤厂位于现有的电厂工业场地内，便于与现有输煤系统的衔接，可降低投
资及运行费用。
The washery is within the industrial site of the existing power station so as to facilitate the
connection with existing coal handling system, which may help reduce investment and
operation cost.

4. 自然条件及煤质特征
4. Natural Condition and Coal Quality Features
4.1 位置
4.1 Location
选煤厂位于 XXX，距离约 6km。
Locating in Xrassa County of XXX State, this washery is about 6km away from the county
town.
4.2 自然条件
4.2 Natural Conditions
经现场踏勘，厂区内有运煤专用铁路线，约有 70%的原煤通过铁路运入厂区。
另有 8%的原煤通过索道运进厂区，其余经公路由卡车运进厂区，交通比较便利。
After site visit, it is found that there is a dedicated railway in the plant for coal transport,
which handles about 70% of raw coal delivered to the plant. Another 8% of raw coal is
transported to the plant via aerial ropeway while the rest is delivered to the plant by trucks. The
transportation condition is good.
区内地形平坦开阔，高差不大，由一条小河流过厂区。
The plant terrain is flat and wide, with small height difference and having a stream running
through.
全年最高温度 39°，最低 8°，无冰冻期。
The yearly maximum and minimum temperatures are 39ºC and 8ºC respectively, with no
ice period.
业主方尚未提供、地势、地貌、水文地质、气候、地址等方面的资料。详细
设计时需要业主提供此方面的详细资料。
The Enduser has yet to provide information on relief, topography, hydrogeology, climate,
or site. Such information is necessary during detailed design.
4.3 煤质特征
4.3 Coal Quality Features
业主提供了给埃克萨松火电站供煤的 4 个主要煤矿的煤质资料，它们分别是

A,B,C,D，供煤的比例约为 10%，40%，40%，10%。
The Enduser provides data on coal quality of the four major mines serving Xrassa Thermal
Power Station, they are A,B,C, and D, supplying coal at a proportion of 10%, 40%, 40%, and
10% respectively.
设计以给定的 4 个煤矿的煤质资料为依据进行，详细分析如下。
The design is based on the coal quality data of the four coal mines and the detailed
analysis is given in the following paragraphs.
4.3.1 原煤筛分组成分析
4.3.1 Size Consist of Raw Coal
原煤筛分组成见表 4-3-1~4-3-5。
The size consist of the raw coal is presented in Table 4-3-1 through 4-3-5.

表 4-3-1 A 露天矿原煤筛分组成表
Table 4-3-1 Size Consist of Raw Coal from A Opencast Mine
粒级
Size Fraction
产率
Yield Recovery
质量
Quality
占全样
Y
筛上累计
Oversize Cumulative
水分
Mad
灰分
Ad
mm % % % %
﹥200 0.40 0.40 4.50 46.80
200~150 3.30 3.70 4.00 59.00
150~100 7.00 10.70 4.70 54.80
100~50 16.70 27.40 4.40 58.10
﹥50mm 合计
﹥50mm Subtotal
27.40 27.40 4.43 57.20
50~25 16.20 43.60 5.10 55.30
25~13 18.00 61.60 4.60 59.30
13~6 18.10 79.70 5.00 56.80
6~3 10.10 89.80 5.30 55.90
3~0.5 6.50 96.30 6.00 54.80
0.5~0 3.70 100.00 5.10 57.90
50~0 合计
50~0 Subtotal
72.60 - 5.06 56.84
毛煤总计
Raw Coal Total
100.00 - 4.89 56.94
由以上筛分组成表 4-3-1 可以看出，A 煤的粒度组成特点如下：
1.原煤灰分为 56.94%,属超高灰。
2.+13mm 含量 61.60%，块煤含量高，符合露天开采特性。
3.随粒度降低，灰分无明显差异，说明矸石和煤存在硬度差别不大，煤质较
为均匀。
4.-0.5mm 原生煤泥含量为 3.70%，含量较低。
From the above Table 4-3-1 of sieve analysis, one may find the following features with the
size consist of A coal:
1. The raw coal has an ash content of 56.94%, making it a high ash coal.
2. +13mm content is 61.60%, in other words the lump coal proportion is large, in
conformance with stripping mining features.
3. With decreasing size, ash content does not change appreciably, indicating the hardness
difference between refuse and coal is not great and the coal quality is uniform.
4. -0.5mm primary slime content is 3.70%, a relative low value.

表 4-3-2 B 露天矿原煤筛分组成表
Table 4-3-2 Size Consist of Raw Coal from B Opencast Mine
粒级
Size Fraction
产率
Yield Recovery
质量
Quality
占全样
Y
筛上累计
Oversize Cumulative
水分
Mad
占全样
Y
mm % % % %
﹥200 0.28 0.28 8.10 23.70
200~150 4.02 4.30 6.60 33.10
150~100 11.84 16.14 7.00 32.00
100~50 26.07 42.21 7.90 29.80
﹥50mm 合计
﹥50mm Subtotal
42.21 42.21 7.53 30.69
50~25 18.05 60.26 7.70 30.80
25~13 10.61 70.87 8.00 31.50
13~6 9.17 80.04 8.10 32.00
6~3 5.44 85.48 7.70 35.00
3~0.5 8.78 94.26 6.50 46.00
0.5~0 5.74 100.00 4.80 55.50
50~0 合计
50~0 Subtotal
57.79 - 7.35 36.28
毛煤总计
Raw Coal Total
100.00 - 7.42 33.92
由以上筛分组成表 4-3-2 可以看出，B 煤的粒度组成特点如下：
1. 原煤灰分为 33.92%,属中高灰煤。
2. +13mm 含量 71.87%，块煤含量很高，符合露天开采特性。
3. 随粒度降低，灰分明显升高，说明矸石易碎。
4. -0.5mm原生煤泥含量为5.74%，含量较低。灰分55.5%,明显高于原煤的33.92%，
表明矸石易碎或易泥化，需特别注意。
B 煤占全部原煤的 40%，设计必须考虑其煤质特点。
From the above Table 4-3-2 of sieve analysis, one may identify the following features with the
size consist of B coal:
1. The raw coal has an ash content of 33.92%, making it a moderate to high ash coal.
2. +13mm content is 71.87%, i.e., the lump coal proportion is very high, in agreement with
stripping mining features.

3. Ash content increases appreciably as the size decreases, indicating the refuse is friable.
4. -0.5mm primary slime content is 5.74%, a relative low value. The ash content is 55.5%,
significantly above 33.92% for the raw coal, indicating the refuse is friable or prone to
argillization, and hence special attention shall be paid.
As B coal accounts for 40% of the raw coal, the design must give due consideration to this
condition.
表 4-3-3 C 露天矿原煤筛分组成表
Table 4-3-3 Size Consist of Raw Coal from C Opencast Mine
粒级
Size Fraction
产率
Yield Recovery
质量
Quality
占全样
Y
筛上累计
Oversize Cumulative
水分
Mad
灰分
Ad
mm % % % %
﹥200 0.98 0.98 6.90 35.20
200~150 1.95 2.93 4.70 63.40
150~100 6.30 9.23 5.80 49.20
100~50 16.64 25.87 5.90 46.00
﹥50mm 合计
﹥50mm Subtotal
25.87 25.87 5.82 47.68
50~25 18.57 44.44 5.90 46.50
25~13 14.47 58.91 5.80 47.50
13~6 14.02 72.93 6.20 43.60
6~3 7.50 80.43 6.50 44.50
3~0.5 10.42 90.85 6.10 44.50
0.5~0 9.15 100.00 4.80 52.90
50~0 合计
50~0 Subtotal
74.13 - 5.89 46.45
毛煤总计
Raw Coal Total
100.00 - 5.87 46.77
由以上筛分组成表 4-3-3 可以看出，C 煤的粒度组成特点如下：
1. 原煤灰分为 46.77%,属高灰分煤。
3. +0.5mm 随粒度降低，灰分变化不明显，说明矸石和煤存在硬度差别不大，煤
质较为均匀。
4. -0.5mm 原生煤泥含量为 9.15%，含量较高。灰分 52.90%,明显高于原煤及邻近
粒级，表明可能含有高灰分的粘土，设计需特别注意。

C 煤占全部原煤的 40%，设计也必须考虑其煤质特点。
From the above Table 4-3-3 of sieve analysis, one may identify the following features with
the size consist of C coal:
2. +13mm content is 58.91%, i.e., the lump coal proportion is very high, in agreement with
3. With decreasing size, +0.5mm ash content does not change appreciably, indicating the
hardness difference between refuse and coal is not great and the coal quality is uniform.
4. -0.5mm primary slime content is 9.15%, a relative high value. The 52.90% ash content is
appreciably above that for the raw coal and the nearby size fractions, indicating high-ash
clay may be present, which should be considered particularly in the design.
As C coal accounts for 40% of the raw coal, the design must also give due consideration to
this condition.
表 4-3-4 D 露天矿原煤筛分组成表
Table 4-3-4 Size Consist of Raw Coal from D Opencast Mine
粒级
Size Fraction
产率
Yield Recovery
质量
Quality
占全样
Y
筛上累计
Oversize Cumulative
水分
Mad
灰分
Ad
mm % % % %
﹥200 5.50 5.50 3.20 61.80
200~150 6.20 11.70 3.40 59.70
150~100 10.80 22.50 4.50 48.90
100~50 20.80 43.30 5.80 47.50
﹥50mm 合计
﹥50mm Subtotal
43.30 43.30 4.80 51.41
50~25 17.70 61.00 4.80 45.10
25~13 12.60 73.60 5.20 43.20
13~6 9.80 83.40 5.80 40.50
6~3 4.30 87.70 6.70 35.20
3~0.5 6.40 94.10 7.00 35.70
0.5~0 5.90 100.00 5.40 47.40
50~0 合计
50~0 Subtotal
56.70 - 5.52 42.31
毛煤总计
Raw Coal Total
100.00 - 5.21 46.25
由以上筛分组成表 4-3-4 可以看出，D 煤的粒度组成特点如下：

3. +0.5mm 随粒度降低，灰分降低，说明矸石比煤要更硬一些。-0.5mm 灰分 47.40,
明显高于原煤及邻近粒级，表明可能含有高灰分的粘土，设计需特别注意。
the size consist of D coal:
2. +13mm content is 73.60%, i.e., a very high proportion of lump coal, agreeing with
The ash content decreases as +0.5mm size decreases, indicating the refuse is harder than
coal. The -0.5mm ash content is 47.40%, appreciably above that for the raw coal and the nearby
size fractions, indicating high-ash clay may be present, which should be considered particularly
in the design.
由表 4-3-1~4-3-4 可以看出，本厂入洗原煤的灰分均较高，煤质较差；+13mm
块煤含量较高，对洗选比较有利；-0.5mm 原煤灰分均高于原煤灰分，可能均含有
高灰分的粘土，设计需特别注意。
Given Table 4-3-1 through 4-3-4, the raw coal to be washed has a high ash content, is poor
in quality; +13mm lump coal proportion is high, favorable to washing; the ash content of
-0.5mm raw coal is above that of raw coal without exception and high ash content clay may be
present, which should be considered particularly in design.
因所有煤矿来的入洗原煤均经 200mm 破碎后进入原煤仓，混合后再入洗。本
设计将+200mm 物料全部破碎至 200mm 以下，然后再根据 4 个矿井的原煤按照入
洗比例 A:B:C:D=1:4:4:1 进行综合,见表 4-3-5。
Raw coal sourced from each mine is crushed by 200mm crusher before being sent to the
raw coal silo, where they will be mixed prior to washing. According to the design, +200mm
materials are reduced to a size less than 200mm and the raw coal from the four mines is
combined at the washing proportion of A: B: C: D=1: 4: 4: 1; see Table 4-3-5 for more
information.

表 4-3-5 原煤综合筛分组成表（A:B:C:D=1:4:4:1）
Table 4-3-5 Combined Size Consist of Raw Coal
(A: B: C: D=1:4:4:1)
粒级
Size Fraction
占全样
Y
筛上累计
Oversize Cumulative
灰分
Ad
mm % % %
200~150 3.39 3.39 47.77
150~100 9.14 12.53 40.69
100~50 21.06 33.59 39.11
﹥50mm 合计
﹥50mm Subtotal
33.59 33.59 40.41
50~25 18.24 51.83 40.95
25~13 13.24 65.07 43.57
13~6 12.20 77.27 41.85
6~3 6.68 83.95 42.54
6~3 4.73 88.68 45.21
3~0.5 4.33 88.28 45.2
0.5~0 6.99 95.27 53.48
50~0 合计
50~0 Subtotal
66.42 - 43.7
毛煤总计
Raw Coal Total
100.00 - 42.59
由以上筛分组成表 4-3-5 可以看出，综合后原煤的粒度组成特点如下：
3. -0.5mm 灰分明显高于原煤灰分。
the size consist of combined raw coal:
2. +13mm content is 65.07%, and the lump coal proportion is very high, in agreement with
3. The ash content for -0.5mm is appreciably higher than that of the raw coal.

4.3.2 原煤浮沉组成分析及可选性评定
4.3.2 Float-Sink Consist of Raw Coal and Washability Evaluation
各矿原煤浮沉组成根据各自的筛分组成表进行校正，同样将+200mm 粒级并入
200-150mm 粒级考虑，校正后筛分浮沉表见表 4-3-6~4-3-9。
The float-sink consist of each raw coal is obtained by correcting their own size consist;
similarly, +200mm size fraction is included in 200-150mm size fraction for consideration. The
corrected float-sink consist is presented in Table 4-3-6 through 4-3-9.

表 4-3-6 A 煤矿浮沉组成综合表（校正后）
Table 4-3-6 Float-Sink Consist of A Coal (After Correction)
密度级
Specific Gravity
Fraction
200~150mm 150~100mm 100~50mm 50~25mm 25~13mm
占本级,r 占全级,Y 灰分 Ash 占本级, r 占全级, Y 灰分 Ash 占本级, r 占全级, Y 灰分 Ash 占本级, r 占全级, Y 灰分 Ash 占本级, r 占全级, Y 灰分 Ash
kg/l % % % % % % % % % % % % % % %
<1.4 10.92 0.36 17.00 12.62 0.89 17.00 11.28 1.89 17.00 12.41 2.02 17.00 15.85 2.86 16.00
1.4~1.5 19.52 0.65 26.30 22.56 1.59 26.30 20.17 3.38 26.30 22.20 3.61 26.30 14.79 2.67 27.00
1.5~1.6 7.68 0.25 37.10 8.87 0.62 37.10 7.93 1.33 37.10 8.73 1.42 37.10 6.34 1.15 36.90
1.6~1.7 5.64 0.19 46.70 6.52 0.46 46.70 5.83 0.98 46.70 6.42 1.04 46.70 4.49 0.81 42.50
1.7~1.8 4.16 0.14 53.90 4.81 0.34 53.90 4.30 0.72 53.90 4.73 0.77 53.90 2.99 0.54 54.00
1.8~1.9 1.85 0.06 61.50 2.14 0.15 61.50 1.91 0.32 61.50 2.10 0.34 61.50 2.03 0.37 59.90
>1.9 50.23 1.66 85.80 42.47 2.99 85.80 48.57 8.14 85.80 43.40 7.06 85.80 53.51 9.67 85.30
合计 Subtotal 100.00 3.31 58.95 100.00 7.03 54.77 100.00 16.77 58.05 100.00 16.27 55.27 100.00 18.07 59.25
煤泥 Slime
总计 Total 100.00 3.31 58.95 100.00 7.03 54.77 100.00 16.77 58.05 100.00 16.27 55.27 100.00 18.07 59.25
密度级
Specific Gravity
Fraction
13~6mm 6~3mm 3~0.5mm 200~0.5mm
占本级, r 占全级, Y 灰分 Ash 占本级, r 占全级, Y 灰分 Ash 占本级, r 占全级, Y 灰分 Ash 占本级, r 占全级, Y
灰分
Ash
kg/l % % % % % % % % % % % %
<1.4 20.66 3.75 15.20 21.11 2.14 10.20 20.73 1.35 10.60 15.86 15.27 14.85
1.4~1.5 12.65 2.30 28.10 10.91 1.11 26.10 10.65 0.69 28.40 16.62 16.00 26.75
1.5~1.6 6.28 1.14 36.70 5.85 0.59 37.10 6.60 0.43 39.60 7.21 6.94 37.16
1.6~1.7 4.63 0.84 44.20 3.90 0.40 41.60 3.67 0.24 41.50 5.15 4.96 44.93
1.7~1.8 3.19 0.58 52.90 2.13 0.22 48.20 2.73 0.18 42.60 3.62 3.48 52.82
1.8~1.9 2.32 0.42 57.90 2.48 0.25 53.70 3.20 0.21 49.30 2.20 2.12 58.38
>1.9 50.28 9.14 84.90 53.60 5.44 83.40 52.42 3.42 81.40 49.35 47.51 84.93
合计 Subtotal 100.00 18.17 56.76 100.00 10.14 55.86 100.00 6.53 54.77 100.00 96.29 56.90
煤泥 Slime
总计 Total 100.00 18.17 56.76 100.00 10.14 55.86 100.00 6.53 54.77 100.00 96.29 56.90

表 4-3-7 B 煤矿浮沉组成综合表（校正后）
Table 4-3-7 Float-Sink Consist of B Coal (After Correction)
密度级
Specific Gravity
Fraction
200~150mm 150~100mm 100~50mm 50~25mm 25~13mm
kg/l % % % % % % % % % % % % % % %
<1.4 42.75 1.72 15.10 43.90 5.21 15.10 46.21 12.08 15.10 45.16 8.17 15.10 48.08 5.12 13.50
1.4~1.5 16.93 0.68 25.40 17.38 2.06 25.40 18.30 4.78 25.40 17.88 3.24 25.40 13.96 1.49 26.80
1.5~1.6 10.71 0.43 33.90 11.00 1.31 33.90 11.58 3.03 33.90 11.31 2.05 33.90 7.83 0.83 34.90
1.6~1.7 6.11 0.25 42.60 6.27 0.74 42.60 6.60 1.73 42.60 6.45 1.17 42.60 5.79 0.62 43.40
1.7~1.8 3.75 0.15 51.90 3.86 0.46 51.90 4.06 1.06 51.90 3.97 0.72 51.90 3.81 0.41 51.40
1.8~1.9 2.85 0.11 58.90 2.93 0.35 58.90 3.08 0.81 58.90 3.01 0.55 58.90 2.86 0.30 59.10
>1.9 16.91 0.68 73.70 14.66 1.74 73.70 10.18 2.66 73.70 12.22 2.21 73.70 17.67 1.88 69.90
合计 Subtotal 100.00 4.03 33.07 100.00 11.87 31.98 100.00 26.14 29.78 100.00 18.10 30.78 100.00 10.64 31.48
煤泥 Slime
总计 Total 100.00 4.03 33.07 100.00 11.87 31.98 100.00 26.14 29.78 100.00 18.10 30.78 100.00 10.64 31.48
密度级
Specific Gravity
Fraction
13~6mm 6~3mm 3~0.5mm 200~0.5mm
灰分
Ash
kg/l % % % % % % % % % % % %
<1.4 46.71 4.30 14.90 34.21 1.87 12.80 19.31 1.70 11.90 42.62 40.17 14.63
1.4~1.5 15.95 1.47 28.30 20.35 1.11 24.40 14.71 1.30 23.80 17.11 16.12 25.60
1.5~1.6 8.90 0.82 34.60 9.61 0.52 33.60 10.12 0.89 30.60 10.48 9.88 33.73
1.6~1.7 5.46 0.50 43.60 7.60 0.41 43.00 7.36 0.65 38.90 6.44 6.06 42.40
1.7~1.8 4.59 0.42 52.40 5.14 0.28 52.50 6.44 0.57 47.50 4.31 4.06 51.33
1.8~1.9 4.01 0.37 62.00 4.24 0.23 59.90 7.82 0.69 56.40 3.61 3.41 58.82
>1.9 14.38 1.32 70.60 18.84 1.03 73.70 34.25 3.02 78.00 15.43 14.54 73.82
合计 Subtotal 100.00 9.20 31.98 100.00 5.46 34.97 100.00 8.80 45.94 100.00 94.24 32.61
煤泥 Slime
总计 Total 100.00 9.20 31.98 100.00 5.46 34.97 100.00 8.80 45.94 100.00 94.24 32.61

表 4-3-8 C 煤矿浮沉组成综合表（校正后）
Table 4-3-8 Float-Sink Consist of C Coal (After Correction)
密度级
Specific Gravity
Fraction
200~150mm 150~100mm 100~50mm 50~25mm 25~13mm
kg/l % % % % % % % % % % % % % % %
<1.4 14.27 0.28 19.00 27.31 1.74 19.00 30.25 5.08 19.00 29.79 5.59 19.00 32.02 4.68 19.80
1.4~1.5 8.09 0.16 26.00 15.49 0.99 26.00 17.16 2.88 26.00 16.90 3.17 26.00 14.18 2.07 27.10
1.5~1.6 2.79 0.06 33.80 5.35 0.34 33.80 5.93 1.00 33.80 5.84 1.09 33.80 4.31 0.63 35.10
1.6~1.7 1.37 0.03 44.80 2.62 0.17 44.80 2.90 0.49 44.80 2.85 0.53 44.80 3.14 0.46 42.70
1.7~1.8 1.96 0.04 51.40 3.76 0.24 51.40 4.16 0.70 51.40 4.10 0.77 51.40 3.14 0.46 51.60
1.8~1.9 1.94 0.04 58.00 3.72 0.24 58.00 4.12 0.69 58.00 4.06 0.76 58.00 3.22 0.47 58.60
>1.9 69.58 1.37 78.50 41.75 2.66 78.50 35.48 5.96 78.50 36.46 6.84 78.50 40.00 5.84 77.10
合计 Subtotal 100.00 1.97 63.12 100.00 6.36 49.06 100.00 16.80 45.89 100.00 18.75 46.39 100.00 14.61 47.38
煤泥 Slime
总计 Total 100.00 1.97 63.12 100.00 6.36 49.06 100.00 16.80 45.89 100.00 18.75 46.39 100.00 14.61 47.38
密度级
Specific Gravity
Fraction
13~6mm 6~3mm 3~0.5mm 200~0.5mm
灰分
Ash
kg/l % % % % % % % % % % % %
<1.4 38.04 5.39 17.40 38.38 2.91 17.10 20.79 2.19 13.90 30.68 27.85 18.23
1.4~1.5 11.70 1.66 28.10 11.46 0.87 32.00 19.93 2.10 25.40 15.30 13.89 26.70
1.5~1.6 5.45 0.77 34.40 4.75 0.36 34.50 8.67 0.91 33.80 5.68 5.16 34.10
1.6~1.7 4.06 0.57 44.60 3.84 0.29 43.80 5.63 0.59 42.50 3.45 3.13 43.93
1.7~1.8 4.36 0.62 53.50 4.19 0.32 54.30 5.63 0.59 49.40 4.11 3.73 51.70
1.8~1.9 4.99 0.71 61.50 4.93 0.37 63.10 4.76 0.50 57.20 4.17 3.78 59.13
>1.9 31.40 4.45 78.10 32.45 2.46 78.50 34.58 3.64 74.10 36.60 33.22 77.72
合计 Subtotal 100.00 14.16 43.52 100.00 7.57 44.41 100.00 10.52 44.41 100.00 90.76 46.16
煤泥 Slime
总计 Total 100.00 14.16 43.52 100.00 7.57 44.41 100.00 10.52 44.41 100.00 90.76 46.16

表 4-3-9 D 煤矿浮沉组成综合表（校正后）
Table 4-3-9 Float-Sink Consist of D Coal (After Correction)
密度级
Specific Gravity
Fraction
200~150mm 150~100mm 100~50mm 50~25mm 25~13mm
kg/l % % % % % % % % % % % % % % %
<1.4 7.37 0.48 15.40 11.04 1.26 15.40 11.51 2.53 15.40 12.33 2.31 15.40 22.42 2.99 15.50
1.4~1.5 13.36 0.88 26.90 20.01 2.29 26.90 20.88 4.60 26.90 22.36 4.19 26.90 18.92 2.52 27.20
1.5~1.6 8.47 0.56 36.40 12.69 1.45 36.40 13.24 2.91 36.40 14.17 2.65 36.40 11.21 1.49 36.90
1.6~1.7 8.06 0.53 44.10 12.07 1.38 44.10 12.59 2.77 44.10 13.48 2.53 44.10 10.38 1.38 44.60
1.7~1.8 4.82 0.32 52.20 7.22 0.83 52.20 7.53 1.66 52.20 8.07 1.51 52.20 6.27 0.84 51.90
1.8~1.9 2.69 0.18 58.70 4.02 0.46 58.70 4.20 0.92 58.70 4.49 0.84 58.70 4.32 0.58 58.50
>1.9 55.24 3.62 80.30 32.94 3.76 80.30 30.05 6.61 80.30 25.10 4.70 80.30 26.48 3.53 79.50
合计 Subtotal 100.00 6.56 59.82 100.00 11.43 49.61 100.00 22.01 48.29 100.00 18.73 46.02 100.00 13.33 44.22
煤泥 Slime
总计 Total 100.00 6.56 59.82 100.00 11.43 49.61 100.00 22.01 48.29 100.00 18.73 46.02 100.00 13.33 44.22
密度级
Specific Gravity
Fraction
13~6mm 6~3mm 3~0.5mm 200~0.5mm
灰分
Ash
kg/l % % % % % % % % % % % %
<1.4 27.95 2.90 12.00 37.08 1.69 8.10 41.43 2.81 6.50 18.10 16.97 12.64
1.4~1.5 17.92 1.86 26.70 14.26 0.65 23.80 10.36 0.70 23.60 18.85 17.68 26.68
1.5~1.6 9.42 0.98 37.50 7.28 0.33 34.60 10.06 0.68 41.50 11.79 11.06 36.83
1.6~1.7 8.20 0.85 43.20 7.18 0.33 42.10 2.66 0.18 43.20 10.61 9.95 44.01
1.7~1.8 5.06 0.53 50.50 4.49 0.20 49.10 3.45 0.23 46.20 6.52 6.11 51.68
1.8~1.9 4.05 0.42 57.00 3.79 0.17 55.20 2.76 0.19 52.60 4.01 3.76 58.01
>1.9 27.40 2.84 78.80 25.93 1.18 78.80 29.27 1.98 80.70 30.12 28.24 80.01
合计 Subtotal 100.00 10.37 41.67 100.00 4.55 36.66 100.00 6.77 37.14 100.00 93.76 46.12
煤泥 Slime
总计 Total 100.00 10.37 41.67 100.00 4.55 36.66 100.00 6.77 37.14 100.00 93.76 46.12

表 4-3-10 原煤浮沉组成综合表（A:B:C:D=1:4:4:1）
Table 4-3-10 Float-Sink Consist of Mixed Raw Coal (A:B:C:D=1:4:4:1)
密度级
Specific Gravity
Fraction
200~150mm 150~100mm 100~50mm 50~25mm 25~13mm
kg/l % % % % % % % % % % % % % % %
<1.4 26.16 0.89 15.69 32.77 2.99 16.07 34.71 7.31 16.24 32.55 5.94 16.64 34.00 4.50 16.41
1.4~1.5 14.43 0.49 25.87 17.58 1.61 25.85 18.35 3.86 25.84 18.32 3.34 25.91 14.67 1.94 27.01
1.5~1.6 8.14 0.28 34.69 9.47 0.87 34.53 9.66 2.03 34.45 9.12 1.66 34.55 6.41 0.85 35.58
1.6~1.7 5.34 0.18 43.59 6.00 0.55 43.59 5.98 1.26 43.59 5.69 1.04 43.83 4.91 0.65 43.35
1.7~1.8 3.58 0.12 52.14 4.32 0.40 52.01 4.47 0.94 51.96 4.51 0.82 51.96 3.65 0.48 51.85
1.8~1.9 2.51 0.09 58.88 3.22 0.29 58.71 3.44 0.72 58.65 3.51 0.64 58.58 3.05 0.40 58.85
>1.9 39.84 1.35 78.91 26.63 2.43 78.30 23.39 4.93 78.91 26.29 4.80 78.87 33.30 4.41 77.86
合计 Subtotal 100.00 3.39 47.77 100.00 9.14 40.69 100.00 21.06 39.11 100.00 18.24 40.95 100.00 13.24 43.57
煤泥 Slime
总计 Total 100.00 3.39 47.77 100.00 9.14 40.69 100.00 21.06 39.11 100.00 18.24 40.95 100.00 13.24 43.57
密度级
Specific Gravity
Fraction
13~6mm 6~3mm 3~0.5mm 200~0.5mm
灰分
Ash
kg/l % % % % % % % % % % % %
<1.4 37.21 4.54 15.93 34.31 2.29 14.39 21.75 1.97 11.93 32.72 30.43 15.85
1.4~1.5 13.65 1.67 28.01 14.47 0.97 27.28 16.52 1.50 24.90 16.53 15.37 26.24
1.5~1.6 6.95 0.85 35.14 6.68 0.45 34.43 9.18 0.83 33.36 8.40 7.81 34.57
1.6~1.7 4.92 0.60 44.01 5.31 0.35 43.02 5.94 0.54 40.75 5.56 5.17 43.32
1.7~1.8 4.32 0.53 52.78 4.21 0.28 52.74 5.57 0.51 48.16 4.38 4.08 51.65
1.8~1.9 4.22 0.51 60.98 4.25 0.28 60.75 5.69 0.52 56.29 3.72 3.46 58.84
>1.9 28.74 3.51 78.80 30.77 2.06 78.85 35.34 3.20 76.76 28.68 26.68 78.40
合计 Subtotal 100.00 12.20 41.85 100.00 6.68 42.54 100.00 9.06 45.21 100.00 93.01 41.78
煤泥 Slime
总计 Total 100.00 12.20 41.85 100.00 6.68 42.54 100.00 9.06 45.21 100.00 93.01 41.78

从表 4-3-6~9 各矿的浮沉组成可以看出,4 个煤矿的原煤共同特点是：
1）-1.4kg/l 密度级灰分为 12.64-18.23%，基元灰分含量高
2）-1.5kg/l 低密度级含量较高
3）+1.9kg/l 密度级含量高
4）1.5-1.9kg/l 中间密度级含量较低
5）缺浮沉煤泥资料
From the float-sink consist of Table 4-3-6 through 4-3-9, one may find the following
characteristics common to the raw coal of the four mines:
1）The ash content for -1.4kg/l density level is 12.64-18.23%, the elementary ash is high.
2） The content for -1.5kg/l low density level is relative high.
3） The content for +1.9kg/l density level is high.
4） The content for 1.5-1.9kg/l intermediate density level is relative low.
5） Float-sink slime data are not available.
同样根据入洗比例混合的综合浮沉组成见表 4-3-10，可见：
1）-1.4kg/l 密度级灰分为 15.85%，可见基元灰分含量高
2）-1.5kg/l 低密度级含量 45.80%，低密度含量较高
3）+1.9kg/l 密度级含量高 26.68%，高密度物含量高；灰分 78.40%，矸石较纯。
4）1.5-1.9kg/l 中间密度级含量 20.52%,含量较低，说明排矸时可选性较好。
5）缺浮沉煤泥资料，无法判断矸石的泥化情况，建议业主补充该资料。
Similarly, the float-sink consist combined at the washing proportion is given in Table
4-3-10, from which it may be found that:
1）The ash content for -1.4kg/l density level is 15.85%, that is the elementary ash is high.
2） The content for -1.5kg/l low density level is 45.08%, a relative high content for low
density.
3） The content for +1.9kg/l density level is high, being 26.68%, while the content of high
density is high; the ash content is 78.40%, the refuse being relatively pure.
4） The content for 1.5-1.9kg/l intermediate density level is 20.52%, a relative low value,
indicating a good washability for refuse discharge.
5） Due to the lack of float-sink slime data, it is not possible to judge the argillization of
the refuse; the Enduser is advised to provide additional information.

4.3.3 可选性评价
4.3.3 Washability Evaluation
可选性评价仅针对综合后的入洗原煤进行。按入洗粒级分别评价。
Washability evaluation covers only the combined raw coal. Evaluation is given separately
for different size fraction to be washed.

表 4-3-11 综合后 200-13mm 可选性计算表
Table 4-3-11 Washability Calculation for Combined 200-13mm Size Fraction
密度级 200-13mm 累积 Cumulative δ±0.1 含量
Specific Gravity
Fraction
占本级 r 灰分 Ad 浮物 Float 沉物 Sink δ±0.1content
% % R % Ad % R % Ad % δ Y %
<1.4 33.24 16.34 33.24 16.34 100.00 41.21 1.4 50.52
1.4~1.5 17.28 26.06 50.52 19.67 66.76 53.59 1.5 26.02
1.5~1.6 8.74 34.67 59.27 21.88 49.48 63.20 1.6 14.39
1.6~1.7 5.65 43.61 64.92 23.77 40.73 69.32 1.7 9.90
1.7~1.8 4.25 51.95 69.17 25.50 35.08 73.47 1.8 7.55
1.8~1.9 3.30 58.69 72.47 27.02 30.83 76.43 1.9 6.00
﹥1.9 27.53 78.56 100.00 41.21 27.53 78.56
合计 Total 100.00 41.21
图 4-3-1 综合后 200-13mm 可选性曲线
Fig. 4-3-1 Washability Curve for Combined 200-13mm Size Fraction
当分选密度为 1.8 时，理论精煤产率 69.17%，灰分 25.50%；δ±0.1 含量 7.55%，
扣除-1.5 低密度物后为 15.26%，为中等可选。
At a separation density of 1.8, the theoretical yield of cleaned coal is 69.1% and the ash
content is 25.50%; the δ±0.1 content is 7.55%, after the deduction of -1.5 low density substance,
the value becomes 15.26%, i.e., moderately washable.

表 4-3-12 综合后 13-1.5mm 可选性计算表
Table 4-3-12 Washability Calculation for Combined 13-1.5mm Size Fraction
Specific Gravity
Fraction
% % R % Ad % R % Ad % δ Y %
<1.4 33.31 14.95 33.31 14.95 100.00 42.72 1.4 47.76
1.4~1.5 14.45 27.10 47.76 18.63 66.69 56.59 1.5 21.77
1.5~1.6 7.32 34.53 55.08 20.74 52.24 64.75 1.6 12.54
1.6~1.7 5.22 43.00 60.30 22.67 44.92 69.67 1.7 9.76
1.7~1.8 4.53 51.63 64.84 24.69 39.70 73.18 1.8 9.04
1.8~1.9 4.51 59.74 69.35 26.97 35.16 75.96 1.9 8.00
﹥1.9 30.65 78.35 100.00 42.72 30.65 78.35
合计 Total 100.00 42.72
图 4-3-2 综合后 13-1.5mm 可选性曲线
Fig. 4-3-2 Washability Curve for Combined 13-1.5mm Size Fraction
content is 24.69%; the δ±0.1 content is 9.04%, after the deduction of -1.5 low density substance,
the value becomes 17.31%, i.e., moderately washable.

表 4-3-13 综合后 1.5-0.15mm 可选性计算表
Table 4-3-13 Washability Calculation for Combined 1.5-0.15mm Size Fraction
Specific Gravity
Fraction
% % R % Ad % R % Ad % δ Y %
<1.4 19.85 11.95 19.85 11.95 100.00 47.90 1.4 34.97
1.4~1.5 15.12 24.91 34.97 17.55 80.15 56.81 1.5 23.48
1.5~1.6 8.36 33.38 43.33 20.61 65.03 64.22 1.6 13.76
1.6~1.7 5.40 40.79 48.73 22.84 56.67 68.77 1.7 10.48
1.7~1.8 5.08 48.20 53.81 25.24 51.27 71.72 1.8 10.24
1.8~1.9 5.16 56.31 58.97 27.95 46.19 74.31 1.9 10.00
﹥1.9 41.03 76.57 100.00 47.90 41.03 76.57
合计 Total 100.00 47.90
图 4-3-3 综合后 1.5-0.15mm 可选性曲线
Fig. 4-3-23 Washability Curve for Combined 1.5-0.15mm Size Fraction
content is 25.24%; the δ±0.1 content is 10.24%, after the deduction of -1.5 low density
substance, the value becomes 15.75%, i.e., moderately washable.

5. 工程设计
5. Engineering Design
5.1 选煤工艺
5.1 Washing Process
5.1.1 产品结构
5.1.1Product Structure
 洗混煤：粒度 13-0mm，灰分≤30%
 Washed mixed coal: Size 13-0mm, Ad ≤30%
 矸石：排弃
 Refuse: Discarded
5.1.2 分选上、下限
5.1.2 Upper and Lower Separation Limits
1）分选的上限为 200mm
1) The upper separation limit is 200mm
在本次设计中分选上限采用 200mm，在原煤筛分破碎车间设分级筛和破碎机，
将原煤破碎至 200mm 以下。原因如下：
For this design, the upper separation limit is set at 200mm. The existing screen and crusher
house is to be fitted with classifying screen and crusher to reduce the raw coal to 200mm and
less. The reason is as follows:
 露天开采过程中经常产生较多的超大粒物料，造成溜槽堵塞，给后续作业
带来问题。为保证选煤厂的运行稳定性，设破碎环节，将入洗原煤粒度上
限控制在 200mm 以下。
 A large amount of ultra-large materials are commonly produced in strip mining, which
may result in chute jamming, causing problem to subsequent operation. To ensure a
stable operation of the washery, a crushing step is considered, whereby the raw coal is
limited to 200mm.
 200mm 是重介浅槽分选机理想的入洗粒度上限。
 200mm is the ideal upper limit for HMV.
 200mm 的入洗上限与更大的入洗粒度上限相比，提高了煤与矸石的解离
度，可以回收更多精煤。

 Compared to larger washing size upper limit, 200mm helps improve the dissociation
degree of coal and refuse, thus more of cleaned coal may be recovered.
2）分选的下限为 0.15mm
2) The lower separation limit is 0.15mm
 动力煤选煤厂不设浮选作业，分选下限为 0.15m，降低分选下限，有利于
提高精煤产率,提高产品质量。
 Where a steam coal washery is not provided with flotation operation, a small lower
limit of 0.15mm helps improve the cleaned coal yield and the product quality.
 尽量降低入洗下限，可获得最大精煤产率和经济效益，保证优质煤炭资源
得到合理使用。
 Minimizing the lower washing limit maximizes cleaned coal yield and economic
benefit, thus ensuring reasonable utilization of quality coal resources.
 -0.15mm 以下物料进入煤泥水系统，煤泥水系统负荷小，有利于生产管理
和降低投资及日常操作费用。
 The slime coal system load is reduced if -0.15mm material is fed to the said system,
which is good to production management and may reduce investment and routine
operation cost.
5.1.3 选煤方法
5.1.3 Separation Methods
结合目前选煤技术发展的趋势，本设计选煤方法立足于以下几点：
Given the development trend of coal separation technologies, the separation methods in
the design is based on the following:
 工艺系统简单、工艺环节性能可靠；
 Simple process system, reliable process procedure performance;
 分选比重可以实现自动调节，以方便生产管理；
 Automatic regulation of separation density, to facilitate production management;
 分级入洗，充分发挥各种分选设备的优势；
 Classified washing, to bring different separation equipment to full play;
 高自动化程度高，高全员效率，低运营费用、生产成本。
 High automation degree, high all-staff efficiency, low operation expenditure, and low
production cost.
1．200-13mm 采用重介浅槽分选
1. Heavy media vessel (HMV) is used for separating coal sized 200~13mm

 分选设备结构简单，有利于维护，维修量少，生产成本低；
 Separation equipment is simple in construction, which helps facilitate
maintenance, reduce repair work, and cut production cost;
 分选效率高，单机处理量大，自动化程度高；
 High separation efficiency, large processing capacity per unit, and high
automation degree;
 对原煤块煤率和含矸量变化适应能力强；特别适合本厂块率高、矸石
含量高、波动大的实际情况；
 A high accommodating capacity to variation in lump coal content and refuse
content of the raw coal; particularly ideal for the fact that the lump coal content
and refuse content of the washery are high and vary greatly;
 分选密度调节范围宽，可在 1.4～1.8 之间调节；
 Wide and adjustable range of separation density, adjustable from 1.4 to 1.8;
 由于分选介质波动小，分选时间短，煤在介质中相对速度小，矸石可
以在最短时间内排出，矸石泥化程度可得到有效控制，对煤泥水处理
和确保产品质量有利。
 The separating media have a narrow fluctuation, the separating time is short, and
the relative speed of the coal in the media is slow, so the refuse may be
discharged within the shortest time and the refuse argillization degree may be
controlled effectively; this is good to slime coal water treatment and ensuring
product quality;
 重介浅槽分选机已在众多选煤厂成功应用。
 HMV has been used with success in quite a few washeries.
2．13-1.5mm 采用两产品重介旋流器分选
2. Two-product HMC is used for separating coal sized 13~1.5mm
 重介分选效率高，可以最大限度的回收精煤产品，提高企业经济效益；
 Recognized for its high efficiency, heavy media separation may maximize
cleaned coal recovery and improve economic benefit of the enterprise;
 重介旋流器分选有利于简化生产管理，分选比重控制精度高，可自动
调节，易于实现自动化，提高全员效率；
 HMV separation helps simplify production management, provides a high
separation density control; this technique may be regulated automatically, lending
well to automation and helping improve all-staff efficiency;

 重介旋流器结构和操作简单，分选参数调节方便，维护量小、费用低；
 HMV is simple in construction and operation and low in maintenance workload
and cost, with separation parameters adjustable conveniently;
 选用的玛泰重介旋流器采用特殊结构设计，处理量大，耐磨性强，分
选精度高。
 The selected Multotec HMV is designed with a special construction, which offers
a high processing capacity, a strong wear resistance, and a high separation
precision.
 重介分选已经成为包括中国在内众多国家发展的方向，并且在实际应
用中得到了较好的经济效益。
 Heavy media separation has become the development trend in numerous
countries including China and has good economic performance in its application.
3．1.5-0.15mm 粗煤泥采用螺旋分选机分选
3. Spiral separator is used for separating coarse slime coal sized 1.5~0.15mm
近年来随着分级分选的理念的逐渐深入人心，国外粗煤泥分选工艺开始大量
应用，粗细煤泥分开洗选的工艺理念已为国内广大选煤专业人员和煤炭洗选加工
企业广泛认同和接受。
In recent years with the gradual accepting of classifying separation, foreign coarse slime
coal separation process is being used extensively, the idea of separate washing of coarse and
fine slime coal is generally recognized and accepted by coal washing professionals and washery
enterprises in China.
众多选煤厂的生产实际结果表明：粗、细煤泥分开洗选，可以有效提高脱泥
筛筛分效率，有效降低重介分选的介质消耗，有效减少煤泥水系统的负荷，有效
降低日常运行成本，这对于大型选煤厂意义则更加深远。
The actual production of many washeries indicate that: separate washing of coarse and fine
slime coal effectively increases the sieving efficiency of desliming screen, reduces the
consumption of media involved in HM separation, reduces slime coal water system load, and
minimizes routine operation cost, which may have far-reaching influence on large coal
washeries.
螺旋分选机依靠自身特殊的结构在重力作用下进行分选，本身无需动力，具
有运行可靠、运行成本低的优点。适合高密度分选，分选粒级范围宽，是目前为

止最为有效且成熟可靠的粗煤泥分选方法。
Due to its special construction, a spiral does not need power and completes separation
under the action of gravity; it has such merits as reliable operation and low operation cost.
Being the most effective, proven, and reliable coarse slime coal separation technique, it is
compatible with high-density separation and offers a wide size range of separation.
1.5-0.15mm 粗煤泥用螺旋分选机单独分选有如下优点：
Separate washing of 1.5-0.15mm coarse slime coal using spirals offers the following
advantages:
 更适合与本厂高密度分选的煤泥特性,在高密度分选条件下,螺旋分
选机的分选效果更容易保证,分选效率高。
 More suitable to the slime properties of high-density separation of the washery;
under high-density separation, the separation effect of a spiral is easier to
guarantee and its separation efficiency is higher.
 同样基元灰分的条件下, 13-1.5mm 和 1.5-0.15mm 分选密度不同。在
同一设备进行分选时，分选密度不能单独调节,意味着一部分精煤不
能得到有效回收而损失到矸石中。
 Under the same elementary ash condition, the separation density for 13-1.5mm
and 1.5-0.15mm is different. For separation using the same equipment, the
separation density can not be adjusted separately, so that a portion of cleaned
coal is not recoverable and has to be discharged to the refuse.
 13-1.5mm和1.5-0.15mm分别采用重介旋流器和螺旋分选机分别分选,
保证各环节分选效率最高，实现精煤最大回收率。
 If HMV and spiral are used separately for washing 13-1.5mm and 1.5-0.15mm,
the separating efficiency for different sizes may be improved and the recovery of
cleaned coal may be maximized.
 螺旋分选机靠自身特殊的结构进行分选，无需动力，具有运行可靠、
运行成本低的优点。
 Due to its special construction, a spiral completes separation without consuming
power; it has such merits as reliable operation and low operation cost.
 螺旋分选机入料上限可达 3mm，可对部分透筛的粗煤泥加以分选，保
证了各相关环节的分选效果和稳定性。
 The upper limit of feeding material for a spiral is up to 3mm, the coarse slime

coal passing the screen may be separated, thus ensuring the separation effect and
stability at each stage.
 本设计螺旋分选机的分选下限为 0.15mm,从而进入煤
 The lower separation limit of the spiral in this design is 0.15mm, so that material
entering into the slime coal water treatment system is greatly reduced, thus
cutting the operation cost of the washery.
 1.5-0.15mm 螺旋分选系统，对上工序而言，稳定了重介系统，对下工
序而言减少了+0.15mm 进入煤泥水系统的物料量，故起到了至关重要
的承上启下作用。
 With 1.5-0.15mm spiral separation system, for preceding procedure the heavy
media system is stabilized while for subsequent procedure the material of
+0.15mm entering into the slime coal system is reduced; hence it plays a crucial
connection role.
4．0.15-0mm 细煤泥的回收
4. Recovery of 0.15-0mm fine slime coal
细煤泥脱水采用筛网沉降过滤机＋板框压滤机联合工艺，原因在于：
Dewatering of fine slime coal is completed using screen bowl press + plate filter press for
reasons of:
 筛网沉降过滤机处理量大，产品水分低，且排料呈散状，产品质量均
匀性好。但是筛网沉降过滤机对于极细粒的回收效率不高，不能全部
回收，如果煤质情况不好，容易造成细泥积聚。
 A screen bowl filter has a large processing capacity and produces products low in
water content, and also the discharge material is loose and the product has a
uniform quality. However, a screen bowl filter has a low recovery rate of
ultra-fine particles because it is not able to recovery them all. In the event of poor
coal quality, accumulation of ultra-fine particles is likely.
 压滤机对于极细粒的回收高利率高，可以全部回收，可以保证煤泥水
系统出清水和洗水闭路循环。快开式压滤机的问题在于产品水分较加
压稍高，排料呈饼状。
 In contrast, a filter press has a high recovery rate of ultra-fine material, able to
ensure clear discharge water of the slime water system and the close-circuit
recycling of washing water. The problem with a quick-operating press is that its
product water content is slightly higher than that of pressurized press and its

discharge material assumes a shape of cake.
 采用筛网沉降过滤机＋板框压滤机联合回收煤泥，可以在有效防范煤
质变化的前提下，保证产品水分和质量，保证煤泥水系统安全可靠，
适应煤质波动情况。
 With a combination of screen bowl filter + plate filter press for slime coal
recovery, it is possible to ensure the product water content and quality while
preventing coal quality deterioration and also the slime coal water system safety
is guaranteed and the coal quality fluctuation may be accommodated.
考虑到煤质波动的情况，预留有板框压滤机煤泥单独落地的可能性。
Given the fluctuation in coal quality, the possibility of separate landing of plate filter press
slime coal is provided.
综上所述，最终推荐的工艺为：
In summary, the recommended technology is:
 200-13mm 重介浅槽分选，
 HMV is recommended for 200-13mm coal
 13-1.5mm 两产品重介旋流器分选
 Two-product HMC is recommended for separating coal sized 13~1.5mm
 1.5-0.15mm 螺旋分选机分选
 Spiral is recommended for separating 1.5-0.15mm coal
 0.15mm-0 筛网沉降过滤机＋板框压滤机联合回收
 A combination of screen bowl centrifuge + plate filter press is recommended for
recovering 0.15mm-0 coal
 -13mm 末煤可全部或部分入洗
 -13mm slack coal may be completely or partially washed
5.1.4 主要工艺环节的确定
5.1.4 Determination of Major Processes
1. 超大块处理
1. Processing of ultra-large lumps
本厂原煤通过不同渠道进入选煤厂，但均为露天矿原煤。露天矿的特点是大
块多，必须在进入洗选系统前将超粒大块处理掉，否则将影响选煤厂的安全运行。
The raw coal entering into the washery is obtained from different sources, but they are all
from opencast mines. Opencast mines are characterized by a large amount of big coal lumps. It

is necessary to remove ultra-large lumps before feeding the coal to the washing system,
otherwise the operation safety of the washery may be compromised.
来自铁路的原煤占全厂原煤的大部分，皮带运量大，直接破碎不太经济。采
取 200mm 预先筛分、筛上物破碎到 200mm 以下的方式。可降低破碎机的入料量，
避免使用超大型破碎机以降低投资及运行费用。
The greater part of the raw coal of the plant is transported by railway, the belt conveyance
quantity is great, so direct crushing is not justified economically. Instead, preliminary screening
of 200mm is used, where the oversize is reduced to a size less than 200mm. The quantity of
material fed to the crusher may be thus reduced so that super large crusher is not necessary; this
may minimize investment and operation cost.
来自索道和汽车受煤坑的原煤总量较少，为减少投资，直接选取通过式破碎
机将原煤破碎到 200mm 以下，保证全厂的入料上限。
A limited quantity of coal comes from the receiving pit for aerial ropeway or truck, so a
crusher is used to reduce the raw coal directly to a size less than 200m in order to minimize
investment and guarantee the upper limit of the feeding material.
注：需业主在前面环节设置除铁器，尽量将入厂原煤的铁器杂物去除，以保
护破碎机。
Note: The Enduser should provide an iron remover in preceding steps to remove iron
from the raw coal as a means to protect the crusher.
通过超大块的处理，可将入选原煤的粒度控制在-200mm，利于后续溜槽、设
备的设计和安全运行。
After the processing of ultra-large lumps, the size of the feeding raw coal may be limited to
-200mm, which is good to the design and operation safety of subsequent chute and equipment.
2. 块煤采用湿式脱泥
2. Wet desliming is suggested for lump coal
全厂工艺系统分为+13mm 的重介浅槽分选系统和-13mm 的原煤分选系统。设计
中采用开孔为 13mm 的香蕉筛分级，脱泥段采用湿式筛分，优点为：
The technological process of the washery falls into two systems: HMV system for +13mm

and raw coal separation system for -13mm. The design considers using 13mm-opening banana
screen for classification and wet screening for desliming because of the following merits:
 确保分级效率；
 The classifying efficiency is guaranteed;
 减少进入重介浅槽的细泥，有利于提高重介浅槽的分选效率；
 Fine slime entering into the HMV is limited, which helps increasing the separation
efficiency of the HMV;
 减少粉尘污染；
 Dust pollution is reduced;
 筛上冲水对筛下-13mm 的物料起到润湿、运输作用，并对下一步的脱泥起
到预湿作用。
 Flushing water on the screen moisturizes and transports undersize -13mm material,
providing pre-moisturizing to subsequent desliming operation.
3. 分选系统按照三系统设计
3. The separation system is designed based on three systems
 主厂房内从分级筛开始按三条独立系统进行设计，系统灵活，操作方便。
 Starting from the classifying screen, the main house is designed to have three
independent systems in order to provide system flexibility and operation convenience.
 按照三条独立生产线设计可以避免选择超大型设备，增加系统运行的可靠
性和稳定性。
 With three independent production lines, it is possible not to use ultra-large
equipment and the reliability and stability of the system is also improved.
4. 末煤采用脱泥重介旋流器分选，脱泥粒度 1.5mm
4. Slack coal separation is done using desliming HMC, which has a desliming size of
1.5mm
 1.5mm 脱泥可以避免煤泥对重介分选悬浮液特性的影响，重介系统稳定性
高，分选精度高。
 With 1.5mm desliming, it is possible to prevent the slime coal from affecting the
heavy media suspension liquid properties so that the heavy media system may have a
high stability and a high separation precision.
 1.5mm 脱泥可明显改善脱介效果，使介耗大幅度降低，同时节省喷水用量。

 1.5mm desliming may substantially improve media draining efficiency and reduce
media consumption while saving spray water consumption.
 脱泥筛筛孔尺寸为 1.5mm, 较传统 0.5mm 脱泥，平均粒度大大提高，所需
脱介筛台数少，能耗低。
 The mesh opening of the desliming screen is 1.5mm, able to increase the average size
greatly compared to the traditional 0.5mm size; also, the number of media draining
screens is reduced and the power consumption is minimized.
 1.5mm 脱泥避免了煤泥在系统中的循环，可以大大降低分流量，稀介磁选
负荷量少，磁选机台数少、磁选效果好，介耗低。
 With 1.5mm desliming, the slime is not circulating in the system, the flow rate is
greatly reduced, the dilute media magnetic separation load is also reduced so that
fewer magnetic separators are needed, with enhanced magnetic separation effect and
reduced power consumption.
 脱泥入洗时，-1.5mm 煤泥单独处理，减少了选煤厂煤泥的循环和泥化，特
别当原煤和矸石泥化严重时，可大大减少煤泥水系统的负荷，减轻了煤泥
处理的难度，有利于煤泥水系统和全场生产系统的稳定性和可靠性。
 In desliming and washing, -1.5mm slime is handled separately so as to minimize the
circulation and argillization of the slime coal in the washery; particularly in case of
severe argillization of raw coal and refuse, the slime water system load may be
reduced greatly and the slime treatment difficulty may be alleviated; this is good to
stability and reliability of the slime water system and the overall production system.
5. 产品水分要求
5. Product water content requirement
选煤厂为动力煤选煤厂，产品的水分和灰分对发热量同样有影响，因此降灰
的同时一定要考虑脱水：
As the washery is designed for separating steam coal, the water content and ash content of
the product have similar influence on heat production; therefore, dewatering shall be considered
along with ash reduction.
 13-1.5mm 的精煤全部选用 HSG1500 离心机脱水，有利于降低全厂精煤水
分。
 All the 13-1.5mm cleaned coal is to be dewatered by HSG1500, because this helps
reduce the water content of all the cleaned coal of the washery.
 1.5-0.15mm 的粗煤泥，采用刮刀卸料 H1000 离心机脱水，保证精煤泥的

产品水分。
 1.5-0.15mm coarse slime coal is to be dewatered using H1000 centrifuge with cutter
discharge of solid to limit the water content of cleaned slime coal.
 0.15mm 以下的煤泥采用筛网沉降离心机＋板框压滤机联合脱水回收。
 0.15mm and finer slime coal is to be dewatered and recovered using screen bowl
centrifuge + plate filter press.
5.1.5 工艺流程
5.1.5 Technological Process
根据上述确定的入选方式和选煤方法，制定了相应的工艺流程图和物料流程
图，见附图。从图中可以看出，整个选煤厂系统分为原煤系统、主厂房系统、产
品系统三大部分。
Given the above feeding and washing techniques, technological process flow chart and
material flow chart are prepared, please see attached drawing. It may be known from the
drawing that the entire washery system falls into three components: raw coal system, main
house system, and product system.
1、原煤系统
1. Raw coal system
本厂原煤共有 3 个接入点，铁路、索道、汽车受煤坑。三处原煤均需进入选
煤厂进行洗选。
This washery has 3 receiving points of raw coal, namely a receiving pit for railway, aerial
ropeway, and truck respectively. In this project, all the coal from the three points needs to be
washed in the washery.
来自架空索道的原煤从 JT10 转载点处接出，来自汽车受煤坑的原煤在一段破
碎车间内接出，二者混合后经 200mm 破碎后一起运至原煤仓。
The raw coal from the aerial ropeway is received at JT10 while that from the truck
receiving pit is received at the primary crusher house; after being mixed, the coal is crushed to
less than 200mm and is then delivered to the raw coal silo.
来自铁路的原煤自原破碎车间引出，转载入新建的筛分破碎车间。在筛分破
碎车间经 200mm 分级，大块手选和破碎，小于 200mm 的全部原煤通过带式输送机
运至原煤仓。
The raw coal transported via railway is received from the existing crusher house and is

then transferred to the new screen and crusher house. The coal is subject to 200mm
classification in the screen and crusher house where oversize lumps are deselected manually and
crushed while the portion less than 200mm is transported to the raw coal silo via a belt
conveyor.
原煤仓内原煤经转载再进入主厂房洗选。
The raw coal stored in the raw coal silo is transferred to the main house for washing.
2、主厂房系统
2. Main house system
主厂房系统可分为块煤分选系统、末煤分选系统、粗煤泥分选系统、介质循
环净化系统、细煤泥回收系统。其中块煤分选系统、末煤分选系统、粗煤泥分选
系统、介质循环净化系统均按三系统设计，每个系统均可独立开启。细煤泥水处
理设备可单独使用，故不分系统设计。
The main house system may be subdivided into lump coal separation system, slack coal
separation system, coarse slime coal separation system, media circulation and purification
system, and fine slime coal recovery system. Specifically, the lump coal separation system, the
slack coal separation system, the coarse slime coal separation system, and the media circulation
and purification system are designed on a tri-system basis, with each of them operable
independently. The fine slime coal water treatment equipment is operable separately, so it is not
provided with subdivided systems.
 块煤分选系统
 Lump coal separation system
原煤进入主厂房后先经刮板机分配给原煤分级筛，进行 13mm 分级，分级筛
排料端进行 13mm 脱泥。
After entering into the main house, the raw coal is distributed by scraper to the raw coal
classifying screen for 13mm sizing; 13mm coal desliming is performed at the discharging side
of the classifying screen.
原煤分级筛上的 200-13mm 物料进入浅槽分选机分选。经浅槽分选机分选出
精煤和矸石。浅槽精煤经脱介筛脱水、脱水后进入破碎机破碎，破碎至-13mm 混
入最终洗精煤产品。浅槽矸石经脱介筛脱水、脱水后成为矸石产品，经矸石皮带
运至矸石仓。

The 200-13mm material on the raw coal classifying screen enters into HMV for separation.
HMV separates cleaned coal from refuse. The cleaned coal is dewatered by media draining
screen before being sent into the crusher for reduction to -13mm size, after which it is mixed
into the final cleaned coal product. The refuse becomes refuse product after being dewatered by
media draining screen and is then transported to the refuse silo via the belt conveyor.
 末煤分选系统
 Slack coal separation system
原煤分级筛干筛段筛下-13mm 原煤经转载可直接混入最终产品也可部分或全
部入洗。入洗的-13mm 原煤经末煤脱泥筛脱泥，脱泥粒度 1.5mm。脱泥筛筛上的
13-1.5mm 物料先进入混料桶，与重介质混合后再经泵打入重介旋流器分选，选后
产品为旋流器精煤和旋流器矸石。旋流器精煤经精煤筛脱介、脱水后再经离心机
进一步脱水后混入最终洗精煤产品。旋流器矸石经矸石筛脱水、脱介后成为矸石
产品。
The undersize -13mm raw coal obtained during classifying dry screening stage may be
either transferred directly to the final product or be totally or partially washed. The -13mm raw
coal for washing is deslimed by slack desliming screen according to a desliming size of 1.5mm.
The oversize 13-1.5mm material on the desliming screen is firstly sent to the mixing vat, where
it is mixed with heavy media before being pumped into HMC for separation; the separation
product is cyclone cleaned coal and cyclone refuse. After media draining and dewatering, the
cyclone cleaned coal is further dewatered by centrifuge and is then mixed with the final cleaned
coal product. After dewatering and media draining by refuse screen, the cyclone refuse becomes
refuse product.
原煤分级筛湿筛段筛下-13mm 原煤有两种处理方式。当原煤分级筛干筛段筛
下-13mm 物料需要全部或部分入洗时，湿筛段的筛下的-13mm 可以与其一并入末
煤脱泥筛脱泥后用旋流器分选。当干筛段-13mm 末煤不入洗时，湿筛段-13mm 物
料可以转载经末煤弧形筛预先脱水后再用精煤离心机脱水回收，产品混入最终洗
精煤产品。
The undersize -13mm raw coal obtained during classifying wet screening may be
processed in two different ways. When all or a portion of the undersize -13mm material
obtained during classifying dry screening stage needs to be washed, the undersize -13mm
obtained during classifying wet screening may be deslimed along with the said material by the
slack desliming screen before being separated by cyclone. When the -13mm slack coal does not

need washing, the -13mm material obtained during wet screening stage may be transferred for
preliminary dewatering by slack coal sieve bend before being recovered by cleaned coal
centrifuge, with the product mixed into the final cleaned coal.
 粗煤泥分选系统
 Coarse slime coal separation system
末煤脱泥筛筛下-1.5mm 原煤汇入原煤分级旋流器入料桶。再经泵打入原煤分
级旋流器分级，分级粒度 0.15mm。分级旋流器底流（1.5-0.15mm）经螺旋分选
机分选，螺旋矸石经高频筛脱水回收后混入矸石产品；螺旋精煤经末精煤弧形筛+
煤泥离心机脱水回收，产品混入最终洗精煤产品。
The undersize -1.5mm raw coal of the slack coal desliming screen is added to the charging
bucket of the raw coal classifying cyclone. It is then pumped into the raw coal classifying
cyclone for separation, the sizing size being 0.15mm. The classifying cyclone undercurrent
(1.5-0.15mm) is separated by a spiral and the spiral refuse is mixed into the refuse product after
being dewatered and recovered by hi-frequency screen. After being dewatered and recovered by
cleaned slack coal sieve bend + slime coal centrifuge, the spiral cleaned coal is mixed into the
final cleaned coal product.
 介质循环与净化系统
 Media circulation and purification system
重介系统中脱介筛下合介段的合格介质返回重介桶，稀介段的稀介质与部分
分流的合介、精煤离心机的离心液一并入稀介桶。进入稀介桶的稀介由泵打至磁
选机净化回收，磁选机精矿入重介桶，磁选尾矿作为各自系统脱泥筛的喷水。
Acceptable media produced in media improvement stage by media draining screen of the
heavy media system is returned to the heavy media bucket, the dilute media during dilute media
stage flows into the dilute media bucket along with acceptable media of some diversion flow
and the centrifugate of the cleaned coal centrifuge. The dilute media in the dilute media bucket
is pumped into the magnetic separator for purification and recovery, while magnetic separator
concentrate is sent into the heavy media bucket, with the magnetic tailing used as the spray
water for the desliming screen in their own system.
重介浅槽系统和重介质旋流器系统的介质循环和净化系统分开设置。可以提
高合格介质密度稳定性并减少介质桶的液位波动和介质消耗。
The media circulation system and the purification system of HMV system and HMC

system are provided separately. The density stability of acceptable media may be improved and
the liquid level fluctuation of the acceptable media bucket may be reduced, thus minimizing
media consumption.
 细煤泥回收系统
 Fine slime coal recovery system
分级旋流器的溢流（-0.15mm）、煤泥离心机滤液、高频筛筛下水、末精煤弧
形筛筛下水全部汇入浓缩机处理，浓缩机溢流作为循环水。底流经筛网沉降离心
机和压滤机共同脱水回收。经筛网沉降离心机回收的煤泥掺入洗精煤产品，压滤
机回收的煤泥可视情况掺入洗精煤产品或矸石。
The overflow of classifying cyclone (-0.15mm), the filtrate of slime centrifuge, the
backwater of hi-frequency screen, and the backwater of slack coal sieve bend all flow into the
thickener for treatment, with the thickener overflow used as circulating water. The undercurrent
is dewatered for recovery by screen bowl centrifuge and filter press jointly. The slime coal
recovered by screen bowl centrifuge is added into the cleaned coal product whilst that recovered
by filter press is added into the cleaned coal or refuse as appropriate to the case.
共设 3 台Φ35m 浓缩机 2 台工作 1 台作为备用，保证选煤厂煤泥水不外排。
Three Φ35m thickeners are provided, two as working one as standby, so as to ensure the
sludge water of the washery does not flow out of the plant boundary.
3、产品系统
3. Product system
原煤经主厂房分选最终形成洗精煤和矸石两种产品，分别通过精煤皮带和矸
石皮带运出主厂房。矸石运至矸石仓，再由汽车外运处理。
After separation by the main house, the raw coal becomes either cleaned coal or refuse
product, which are transported out of the main house via the cleaned coal belt or the refuse belt.
The refuse is transported to the refuse silo, where it is hauled away by truck for disposal.
洗精煤经皮带运输机运出主厂房后可以直接给入到原有的 105A、105B 皮带，
也可给入到原有的 116A、116B 皮带，还可以给入到 107A 堆取料机的皮带机去储
煤场。灵活的产品走向设置可以确保在电厂输煤皮带有故障时选煤厂仍能正常运
行。

Xrassa Coal Preparation Plant Design Instruction

Xrassa Coal Preparation Plant Design Instruction

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Xrassa Coal Preparation Plant Design Instruction