The document summarizes the key steps in the iron ore pelletization process. It describes how iron ore fines and binders are mixed and formed into green balls either using a disc pelletizer or drum pelletizer. The green balls are then indurated through drying, preheating, and firing to develop bonds between fine ore particles at high temperatures. This process produces hardened iron ore pellets that offer advantages for blast furnace operations over using iron ore fines alone.
Pelletization of iron ores and the type of wear liners used in thier eqipmentsGulshan Kumar Singh
Now a days about 60% of iron ore converted to fines during mining, handling and transporting so pellet is a process of utilizing iron ore fines up to size of 0.15 microns. i investigate its process,equipment used in process, wear and other problems in them and its future scope
Iron making - Palletization process- Types of palletizers utkarshprajapati3
Detail of palletization process. Difference between Disc and drum pelletizer. Properties parameters and Norms for testings. List of difference agglomerates testings.
Pelletization of iron ores and the type of wear liners used in thier eqipmentsGulshan Kumar Singh
Now a days about 60% of iron ore converted to fines during mining, handling and transporting so pellet is a process of utilizing iron ore fines up to size of 0.15 microns. i investigate its process,equipment used in process, wear and other problems in them and its future scope
Iron making - Palletization process- Types of palletizers utkarshprajapati3
Detail of palletization process. Difference between Disc and drum pelletizer. Properties parameters and Norms for testings. List of difference agglomerates testings.
This is Blast Furnace ppt for steel plant.
this is my web site : http://btechadvanceproject.blogspot.in/
this is my Youtube - https://youtu.be/l0blxo-t_cg
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Material Science and Engineering
Ferrous Materials
Classification of Steel
Low carbon steel
Medium Carbon steel
High carbon steel
Structural steel
stainless steel
Applications
Dear Readers,
In this presentation, I have tried to explain main raw material sources of iron making process. Also, with my experience, I have tried to give a concept about the plant engineering related to raw material. I hope that, this presentation will be helpful for young engineers. With this presentation they will get a broad idea about the raw material, based on which they can study more on the subject.
Regards,
Nirjhar.
This is Blast Furnace ppt for steel plant.
this is my web site : http://btechadvanceproject.blogspot.in/
this is my Youtube - https://youtu.be/l0blxo-t_cg
Follow On Instagram : https://www.instagram.com/md.raza72/
My linkedin profle https://www.linkedin.com/in/md-raza-ansari-78a6ba116/
Material Science and Engineering
Ferrous Materials
Classification of Steel
Low carbon steel
Medium Carbon steel
High carbon steel
Structural steel
stainless steel
Applications
Dear Readers,
In this presentation, I have tried to explain main raw material sources of iron making process. Also, with my experience, I have tried to give a concept about the plant engineering related to raw material. I hope that, this presentation will be helpful for young engineers. With this presentation they will get a broad idea about the raw material, based on which they can study more on the subject.
Regards,
Nirjhar.
Size reduction is a process of reducing large solid unit masses - vegetables or chemical substances into small unit masses, coarse particles or fine particles.
The process of pelletizing potash offers many benefits and is gaining in popularity, because it offers a premium potash product, capable of breaking down quickly in standard field conditions. This presentation goes over the basics of pelletizing potash, as well as the many benefits pelletizing has to offer.
Gypsum is commonly pelletized for use as a soil amendment. This presentation goes over the basics of pelletizing gypsum, gypsum pelletizing equipment, and the many benefits that pelletizing gypsum for use as a soil amendment has to offer.
Make wood residue into fuel pellets for plywood factoryJossie Xiong
The plywood waste pellet is a kind of bio-pellet mainly made of wood residue and offcut of the scrap plywood, the complete making process consist of chipping, drying, pelletizing, cooling, etc.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
2. Introduction To Pelletisation Process
Pellets are spherical balls formed by the agglomeration of natural or
ground iron ore fines in the presence of moisture and binder
These green balls of 5 – 20mm size are then dried, preheated and fired
at 1250 – 13500 C
Bonding is developed between the fine ore particles at such high
temperatures
Additives like Bentonite, lime or dolomite up to 0.5 -1.0% may be
added for improved bonding
2/18
3. Necessity of Pelletisation
Utilization of iron ore fines of size even 0.5-0.15mm
Extending the life of iron ore reserves of nation.
To improve blast furnace performance
Increase in blast furnace productivity.
Decrease in uses of blast furnace fuel / coke fuel. Improve in quality of hot
metal.
3/18
5. Pelletisation process consists of the following steps:
Feed preparation
Green ball production and sizing
Green ball induration
Drying
Preheating
Firing
Cooling of hardened pellets
5/18
6. Feed preparation
Pelletizing feed preparation and mixing: the raw material (iron ore
concentrate, additives —Limestone or dolomite—and binders—Bentonite are
prepared in terms of particle size and chemical specifications, dosed, and
mixed together to feed the pelletizing process
The feed size should be -100 mesh, with more than 60% as -350mesh
6/18
7. The size and shape of feed particles leads to maximum mechanical
interlocking and surface tension to obtain strong green pellets
To produce required quality green pellets, iron ore must be available in fine
ground form with around 60-80% , -45 microns sized particles.
7/18 Feed preparation(cont..)
8. Green ball production
Green pellet formation process involves:
(a) mixing of ground iron ore mixture with process water, binder and fluxes
(b) formation of green pellets in disc or drum pelletizer followed by screening
process by roller screens.
Two important methods of green ball production:
Disc Pelletisation
Drum Pelletisation
8/18
9. Disc pelletizer
The balling disc basically consists of a pan with
a peripheral wall, which rotates with a certain
inclination to the horizontal
They are 3.6 – 5.6 m in diameter and inclined at
45o to the horizontal
The charge is directly fed onto the disc and
moisture level is made up with the water sprays
9/18
10. Disc pelletizer(cont..)
Seeds of green balls are immediately
formed with the addition of water
These seeds grow in size due to the
centrifugal force of the disc
The green balls rise on the inclined
surface of the pelletiser in the direction
of rotation and fall down against the toe
section of the disc
10/18
11. Pelletisation can be carried out on a disc with reasonable flexibility.
In a continuous operation the discharge of desired size balls is balanced by an
equivalent addition of feed.
The production rate of balls depends on
Diameter of the disc
Angle of inclination of disc with horizontal
Speed of rotation
Height of the peripheral wall
Rate of moisture addition
11/18
Disc pelletizer(cont..)
12. Mechanism of ball formation
The formation of balls on a pellet depends primarily on the moisture
content.
If moisture is less than the critical amount its distribution tends to be non -
uniform, major amount being present in the granulated material leaving
the non - granulated material relatively dry.
If the moisture level is more than the critical value, growth rate is more but
the balls produced are liable to deformation because of their plasticity.
Seeds are formed only if critical moisture level is maintained and without
which the process cannot proceed properly.
12/1812
13. Ball formation is three regions
Nucleii formation region
Transition region
Ball growth region
13/18
14. Drum Pelletizer
The drum pelletizer is a steel drum, open
at both ends
It is 2- 3 m in dia and 6 – 9 m in length
It is inclined at 2 – 10 0 to the horizontal
and rotates at 10 – 15 rpm
The charge is fed at the higher end,
where water sprays are located
14/18
15. Comparison of disc and drum pelletiser
S ITEM DISC DRUM
1. Classification of
product
Acts as a classifier Not like disc
2. Nucleation In the wet zone In the wet zone
3. growth Mainly by layering More by assimilation
4. Product quality Closed sized product Wide range of product size
5. size For the same output, the size of
disc is much larger than drum
-
6. Extent of mixing Acts nearly as a perfect mixer Not to the same extent of disc
15/18
16. Productivity
Cost
Labour skill
Time of operation
Adv & Dis adv(Disc, Drum Pelletizer).16/18
17. Theory of bond
Production of hardened pellets starts with the production of green balls in
the first place
It is necessary that the green balls possess adequate strength to stand
bumps, overlying load and abrasion during screening and handling until
finally these are hardened by induration.
There are different water particle systems:
The pendular state
The funicular state
The capillary state
17/18
18. Energy consumption
Easy handling and transportation
Good Bed Permeability
Good Reducibility
Uniform chemical composition
18/18 Advantages of pellets