TROMMEL SCREEN
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Trommel screens consist of a drum, frame, hopper, reducer, and motor. Broken stone is fed into the rotating drum where larger materials move forward and are separated by screens of different mesh sizes into different hoppers. The separated materials are then sent to individual product stacks by conveyor or manually depending on size specifications, with anything larger than the last screen mesh discharged from the outlet. Trommel screens operate slowly and steadily for simple classification of materials like refractories, coal, sand and mixtures in a process requiring minimal specialized installation.
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This document discusses various types of heavy construction equipment used in construction projects. It describes earth moving equipment like excavators, backhoes, draglines, clam shells, scrapers, bulldozers, trenchers, tractors, loaders and graders. It also discusses hauling equipment like dump trucks used to transport materials. For each type of equipment, it provides details on their usage, basic parts and suitability for different excavation and earth moving tasks.
Sand maker
The document provides information about sand making machines. It describes the inner structure, which includes a feeding device, distributor, and whirling motion crushing chamber. It also explains that the machine is suitable for medium and fine crushing of various hard materials to make building sand and road paving sand. Key features include being low in energy consumption, high in output, and having a protective basement that reduces abrasion.
sand making machine
'Vertical shaft impact crusher is also called sand maker which is highly efficient stone crushing equipment with domestic and international leading level researched and manufactured by Hongxing Machinery on the basis of introducing the famous “stone impacting stone” crusher principle
Final
Compaction is a key process in road construction that increases the density of soil and asphalt materials. Several factors influence compaction, including soil type, moisture content, temperature, equipment used, and number of passes. Proper compaction gives greater strength, reduced settlement, lower permeability, and resistance to rutting. Both soil and asphalt require specific compaction procedures and equipment to achieve optimal results and meet density requirements. Climatic conditions like temperature, wind, and sunlight can impact the compaction of asphalt by affecting cooling rates.
Geo Technical Engineering (field compaction)
Smooth-wheel rollers are suitable for proof rolling subgrades and finishing sandy and clayey soils, providing 100% ground contact pressure up to 380 kN/m2. However, they are not suitable for producing high unit weights of compaction in thicker layers. The four most common types of rollers used for compaction are smooth-wheel rollers, pneumatic rubber-tired rollers, sheepsfoot rollers, and vibratory rollers.
Equipment for earth work (for civil engineering)
This document summarizes various types of equipment used for earthwork and compaction. It describes bull dozers, scrapers, cranes, loaders, excavators, shovels, graders, and various types of rollers including hand rollers, sheepfoot rollers, pneumatic rollers, and flat wheelers. Bull dozers are powerful tracked vehicles used to push soil and debris with blades and rip loose compacted materials. Scrapers are equipped with a movable hopper to collect and transport soil and materials.
Types of compaction and equipment used for compaction
This document discusses types of compaction and equipment used for compacting soil and concrete. It defines compaction as the densification of soil through mechanical energy. Compaction reduces pore space in soil to increase strength, stability, and reduce permeability and erosion. Factors like water content, compactive effort, soil type, and compaction method affect results. Equipment for soil compaction includes smooth drum rollers, sheepfoot rollers, pneumatic rollers, grid rollers, tamping rollers, vibrating rollers, vibrating plates, and rammers. Equipment for concrete includes internal vibrators, form vibrators, table vibrators, and surface vibrators.
construction equipment
The document provides information about various types of construction equipment. It discusses earthmoving equipment like power shovels, backhoes, dozers and scrapers that are used for excavation and loading of materials. Hauling equipment like trucks and trailers are used to transport excavated materials. Other equipment mentioned include compactors, cranes, crushers and batching plants used for tasks like compaction, lifting, aggregate production and concrete mixing. The document emphasizes that using the appropriate equipment can improve the economy, quality, speed and timely completion of large construction projects.
EARTH MOVING EQUIPMENTS
Earthmover refers to heavy-duty vehicles specially designed to execute construction tasks, most frequently involving earthwork operations or other large construction tasks. Heavy equipment usually comprises five equipment systems: the implement, traction, structure, power train, and control/information.
These subdivisions, in this order, are the standard heavy equipment categorization.
Track-type
Agricultural tractors
Bulldozer
Snowcat
Skidder
Track-type tractors (Bulldozer)
Tractor
Military engineering vehicles
Grader
Grader
SkidSteer
Skid steer loader
Excavator
Amphibious excavator
Compact excavator
Dragline excavator
Dredger
Bucket-wheel excavator
Excavator (digger)
Long reach excavator
Power shovel
Reclaimer
Steam shovel
Suction excavator
Walking Excavator
Trencher (machine)
Yarder
Backhoe
Backhoe
Backhoe loader
Timber
Feller buncher
Harvester
Skidder
Track harvester
Wheel forwarder
Wheel skidder
Pipelayer
Pipelayer (sideboom)
Scraper
Fresno scraper
Scraper
Wheel tractor-scraper (belly scraper)
Mining
Construction & mining tractor
Construction & mining trucks
Mining equipment
Haul truck
Articulated
Articulated hauler
Articulated truck
Compactor
Wheel dozers – soil compactors
Soil stabilizer
Loader
Loader
Skip loader (skippy)
Wheel loader (front loader, integrated tool carrier)
Track loader
Track loader
Material handler
Aerial work platform / Lift table
Cherry picker
Crane
Block-setting crane
Bulk-handling crane
Crane vessel
Container crane
Gantry crane
Overhead crane
Electric overhead traveling crane
Railroad crane
Ring crane
Level luffing crane
Mobile crane
Travel lift
Forklift
Knuckleboom loader (trailer mount) & Knuckleboom loader (trailer mount)
Straddle carrier
Sidelifter
Reach stacker
Telescopic handlers
Paving
Asphalt paver
Asphalt plant
Cold planer
Cure rig
Paver
Pavement milling
Pneumatic tire compactor
Roller (road roller or roller compactor)
Slipform paver
Vibratory compactor, Compactor
Underground
Roadheader
Tunnel boring machine
Underground mining equipment
Hydromatic tool
Ballast tamper
Attachments
Drilling machine
Pile driver
Rotary tiller (rototiller, rotovator)
Hydraulic machinery
Highway
Dump truck
Highway 10 yard rear dump
Highway bottom dump (stiff), pup (belly train), triple
Highway end dump and side dump
Highway transfer, Transfer train
Highway transit-mixer
Lowboy (trailer)
Street sweeper.
Bulldozer
A dozer is a tractor equipped with a large metal blade used to push materials like soil, sand, and rubble during construction projects. Dozers can have tracks or wheels and are used to move earth and materials over short or long distances, clear construction sites, and backfill trenches. Key components of a dozer include the tractor body, high-powered diesel engine, metal tracks or wheels, and large front-mounted blade.
Construction equipment (earth work)
what is earthwork? and what is earthwork equipment ?. types of earthwork equipment, tractor, motor grader, backhoe, dragline, clamshell, bulldozer and their applications.
Earth work equipment
The document describes different types of earthwork equipment: wheel loaders, backhoes, excavators, scrapers, motor graders, rollers, and dump trucks. It provides details on the purpose and operation of loaders, backhoes, scrapers, excavators, graders, and various types of rollers used for soil compaction. Dump trucks are also mentioned as an alternative to scrapers for transporting excavated soil.
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Types of compaction and equipment used for compaction
Types of compaction and equipment used for compaction
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ALKADIENES
Alkadienes are hydrocarbons that contain two carbon-carbon double bonds. They can be classified based on the location and relationship of the double bonds as cumulated, conjugated, or isolated. Cumulated dienes are reactive, while conjugated dienes have similar physical and chemical properties to alkenes. Isolated dienes behave similarly to monoolefins. Alkadienes are used in the production of tires and plastics. Exposure safety hazards include possible cancer risks from inhalation or skin contact. Symptoms from inhalation include respiratory irritation and effects on the central nervous system. Skin or eye contact may cause burns or irritation.
FLOATATION REAGENTS
Dissolved air flotation (DAF) is a water treatment process that clarifies wastewaters by removing suspended matter such as oil or solids. This is achieved by dissolving air into the water under pressure and releasing it, causing air bubbles to adhere to suspended particles and causing them to float. DAF is widely used to treat industrial wastewater from facilities like oil refineries, chemical plants, and paper mills. A similar process called induced gas flotation is also used for wastewater treatment. In the mineral processing industry, froth flotation is commonly used to separate minerals.
GALLIUM
Gallium was first predicted in 1871 and discovered in 1875. It is extracted as a byproduct of aluminum and zinc production from bauxite and sphalerite ores. Gallium does not exist freely in nature. It has a low melting point slightly above room temperature and is used in integrated circuits, LEDs, solar panels, medical thermometers, and mirrors due to its semiconductor and alloying properties.
JAW CRUSHER
Jaw crushers are primarily used for coarse and medium crushing of materials in mining, construction, and other industries. They use compressive force from two jaws, one stationary and one that reciprocates, to crush particles in the crushing chamber. Jaw crushers come in different sizes depending on the width of their feeding mechanism and can be used for simple crushing needs with reliable operation and easy maintenance.
GRAVITY THICKENER
Gravity thickeners use sedimentation to concentrate sludge through the settling of solids. Flocculant is added to the feedwell to cause fine particles to bind together and settle rapidly. Rake arms slowly rotate to push settled solids towards the deflector cone, from which concentrated underflow is pumped out. Clear overflow is discharged from the top of the thickener.
AIR CLASSIFIER
Air classification is a process that uses a double cone air classifier to modify the particle size distribution of dry powders according to end user requirements. The air classifier centrifugally separates coarse and fine particles by conveying material through rotating blades that create an airflow, with coarser particles accumulating in the central cone and finer particles transported out of the separator by the air. Air classifiers have a wide range of applications in industries that handle powders like paints, dyes, pharmaceuticals, and more.
Gravity thickener
Gravity thickeners use sedimentation to concentrate biosolids and produce a thickened sludge and relatively clear liquid. Solids separate from the liquid stream through gravity settling in large tanks. Common components include tanks, a drive system, rakes, and feedwells. Rakes slowly rotate to move settled solids towards a central deflector cone for removal as thickened underflow, while clarified liquid overflows the top of the tank. Flocculants are added to promote particle bonding and rapid settling.
Mining (1)
The document discusses various topics related to metallurgy and mining, including:
- A brief history of mining from the Stone Age to the Iron Age.
- Different types of mining such as surface mining (open-pit, strip, quarry, alluvial), underground mining (longwall, room and pillar, etc.), and ocean mining.
- Activities that take place before mining such as traditional prospecting using mules and modern prospecting using trained specialists and sophisticated equipment.
- Various materials recovered through mining like metals, coal, salt, diamonds and the figures showing examples.
Mining (2)
This document provides information about mining and mineral exploration. It begins with an introduction to mining and the materials recovered through mining such as metals, coal, salt, and diamonds. It then discusses the history of mining from the Stone Age to the Iron Age. Tables show production data for various countries and Philippine reserves of metallic and non-metallic ores. The document also covers topics like prospecting methods, geological guides for prospecting, exploration techniques, and equipment used for exploration such as gravimeters, scintillometers, and seismographs.
POTASSIUM
Potassium is a silvery-gray or silvery-white solid metal that has an atomic number of 19, a density of 0.862 g-cm3, and melts at 63.38°C and boils at 759°C; it oxidizes rapidly in air and reacts strongly with water. When burned, potassium produces a lilac colored flame. Common applications of potassium include using potassium chloride as a substitute for table salt, potassium bisulfate as a food preservative and in textile bleaching, potassium sodium tartrate as the main component of baking powder, potassium chlorate in matches and explosives, and formerly potassium bromide as a sedative and in photography.
Alkyl (powerpoint)
This document discusses alkyl halides, also known as haloalkanes. Alkyl halides are a class of compounds where halogen atoms are attached to a tetrahedral carbon atom. They have higher melting and boiling points than analogous alkanes and are insoluble in water. Alkyl halides can be classified as primary, secondary, or tertiary depending on whether the halogen is attached to a carbon that has 1, 2, or 3 carbon neighbors.
SHELL & TUBE HEAT EXCHANGER
This document provides information about a shell and tube heat exchanger. It consists of a shell with a bundle of tubes inside it. Process streams flow through the tubes and are heated or cooled by another medium flowing on the outer shell side. Common applications include cooling hydraulic fluid, oil, and other mediums in engines and power systems. The simple design makes shell and tube heat exchangers suitable for a wide variety of industrial heating and cooling applications.
BAROMETRIC JET CONDENSER
The document discusses barometric jet condensers. It describes how barometric jet condensers work by directly mixing cooling water and steam for condensation. Vapors entering the top of the condenser are condensed by water from spray nozzles, while non-condensables are drawn into the tailpiece and discharged through the bottom with the condensing water. Barometric jet condensers are commonly used in various industries to remove vapors where large capacities are required and fluctuations in temperature or steam loads occur.
AZEOTROPIC DISTILLATION
This document provides information about azeotropic distillation prepared by Claire E. Canoy for their 2nd year Chemical Engineering Technology course. It defines azeotropic distillation as adding an entrainer component to a feed mixture to form a new azeotrope that can be separated into its components by distillation. The entrainer allows either the separation of a closely boiling pair or the separation of an azeotrope into its components. A diagram shows the process of mixing the feed and entrainer before distillation in two columns to separately remove the key components and recycle the entrainer.
ROTARY DRYER
The rotary dryer is a type of industrial dryer that reduces the moisture content of materials by bringing them into direct contact with heated gas. It consists of a cylindrical shell that rotates, allowing material to be fed in at one end and discharged at the lower end as it dries. As the dryer rotates, internal fins lift the material through a hot gas stream to evaporate moisture before it falls back to the bottom. Rotary dryers can dry a wide range of materials effectively and are commonly used in mineral processing to dry products like sands, limestone, ores, and coal.
WET COOLING TOWER
This document describes the process of how wet cooling towers function to transfer waste heat from industrial processes to the atmosphere. The warm water returns to the top of the cooling tower and trickles down over fill material, contacting an upward flow of ambient air induced by fans. This contact causes some of the water to evaporate, cooling the remaining water which is then ready to recirculate. Dissolved salts are left behind in the water, increasing its concentration, so blowdown removes some water to control the salt level while fresh makeup water is added to compensate for losses from evaporation, drift, and blowdown.
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