coal wash plant process

coal washing plant,coal washery,coal washing-beijing hot mining tech co ltd

coal washing plant,coal washery,coal washing-beijing hot mining tech co ltd

The major engineers havedelivered over 100 major coal washing projects. Especially, the major founders has designed and delivered about 400 million ton washing capacity in China, which accounts for10%of the total coal mining capacity (China).

Currently, HOT has already had presence in Australia. In 2013, HOT is employed by Caledon Coal Pty Ltd, and provides engineering consulting and sourcing services for the upgrade CHPP project successfully (COOK Colliery Coal Washing Plant, The capacity of Phase 1 is 3.5 MTPA).

Our end to end solutions are proven to lower capital and operating costs, save construction time and improve plant efficiencies. We ensure that our coal processing solutions are tailored to your specific needs.

Coal Washing Plantsconsist of several sub-processing modules including raw coal preparation (crushing and screening station), pre-discharge rejects (rom jig, dense medium vessel/bath, rotary breaker), coal feedingand washing module (jigging ordensemedium cyclones) as well as a dewatering module, coal handling module (conveyors, train/truck loading station, stacker reclaimer).

Great variety of design techniques, meeting the requirements of multiple products, covering all advanced coal preparation techniques, such as coarse coal bath heavy medium separation, heavy medium cyclone fine coal separation, coarse slurry separation and fine slurry flotation, etc.

HOT Miningprovides high quality equipment for coal washing plants, such as crushers, vibrating screens, vibrating feeders, coal centrifuge, teetered bed slurry separator (TBS),dense mediumcyclone, hydrocyclone, dense medium vessel/bath, jigger, Flotation Machine, Spiral Chute, etc.

Banana Vibrating Screen Horizontal Vibrating Centrifuge Double Rollor Crusher Screen Bowl Centrifuge TBS Hydrocyclone Spiral Chute Sieve Bend Screen

coal washing process and slime dewatering, recycling | lzzg

coal washing process and slime dewatering, recycling | lzzg

The three most basic processes in a coal washing plant are preparation operations (crushing, screening, grading), sorting operations, and post-selection product processing operations before sorting. At the same time, heavy medium coal preparation includes five major processes: coal flow, medium flow, circulating water system, slime water and clean water. Preparation before the coal washing Sieving: The operation of dividing a mixture of different particle sizes into various granules by using a perforated sieve surface is called sieving. The machine used for drying is called a sieving machine or a sieve. Crushing: The process of pulverizing large pieces of material into small particles is called crushing. The machine used for crushing is called a crusher. The material is crushed mainly by mechanical methods, and there are several main methods such as crushing, chopping, breaking, crushing and grinding. Coal Sorting operation: Washing coal: It uses different physical and physical-chemical properties from other materials. It uses mechanical methods to remove impurities mixed in raw coal in the coal preparation plant, and divides it into products of different quality and specifications to meet the needs of different households. Commonly used coal preparation methods include jigging coal preparation and heavy medium coal preparation. Jigging coal washing: The coal preparation process is carried out in a vertical pulsating medium according to the difference in particle density. Heavy medium coal washing: In media with a density greater than 1g/cm, coal is selected according to the difference in particle density, which is called heavy medium coal preparation or heavy medium coal preparation. Heavy medium coal preparation is generally classified. The sorting lump coal is generally carried out by gravity using a heavy medium sorting machine; the sorting coal is carried out by a gravity medium swirler under the action of centrifugal force. Processing of products after coal preparation [1] Dehydration and de-intermediation of the product: The clean coal is de-packed by de-screening, dewatering, and then enters the centrifuge for secondary dewatering and then into the clean coal belt conveyor. Medium coal and vermiculite use a double-channel de-screening machine, and the intermediate surface of the dewatering screen surface separates the medium coal from the vermiculite. The coal and vermiculite on the sieve are transported to the medium coal and vermiculite unloading point by the belt conveyor. [2] Recycling of medium circulation: clean coal, medium coal, vermiculite curved screen, and de-sieving sieve shall be used in a qualified medium drum for reuse. The clean coal, medium coal, and vermiculite off-screening of the second-stage sieve are dilute medium; the clean coal is thinned to the fine coal barrel and then hit the magnetic separator, the medium coal and the vermiculite flow from the medium to the middle and the thin The barrel is hit to the middle and the magnetic separator, and the above magnetic separation concentrate flows into the qualified medium barrel for recycling. [3] Medium addition: This design does not have a medium grinding system. It is added with qualified magnetite powder. The specific process is to use high-pressure water (P=0.5MPa) to flush the magnet powder into the collection pit and pump it to the magnetic field. The magnetic separation of the machine is selected, and the magnetic separation concentrate flows into the qualified medium barrel to realize the medium addition. [4] Crude coal slurry recovery: After the fine coal magnetic separator tailings are transferred to the fine coal tailings barrel, the pump is used to classify the classifier cyclone, and the cyclone bottom stream is recovered by high frequency sieve to recover the coarse coal slime. Go in the clean coal. The demineralized sieve sifting water and the tailings water of the medium coal and vermiculite magnetic separator enter the coal slurry tank, pumped to the classification cyclone for classification, the bottom of the cyclone enters the high-frequency sieve, and the high-frequency sieve is mixed with the medium coal. Go in. The cyclone overflows and the high-frequency sieve sifts down the water to float. [5] Flotation and flocculation filter: The cyclone overflows through the slurry preparation device for slurry pretreatment and then enters the flotation machine for flotation. The flotation concentrate enters the flotation concentrate pool and is pumped. The filter press, after pressure filtration, obtains flotation clean coal, which is transported by the belt to the clean coal yard together with the fine coal dewatering sieve and the coarse coal recovered by the high-frequency sieve. The filtrate did not circulate. The flotation tailings well enter the thickener for concentration of the slime. [6] Coal slime pressure filtration: The bottom flow of the thickener is pumped to the slime filter press, and the slime product is obtained by pressure filtration, and the filtrate is used as circulating water. [7] Circulating water system. Coal washing products The products produced after the coal washing process are generally divided into vermiculite, medium coal, class B clean coal, and grade A clean coal. After the coal washing process, the finished coal is usually called clean coal. By washing coal, the coal transportation cost can be reduced and the coal can be improved. Utilization rate, clean coal is generally used as fuel energy. Bituminous coal is generally used for coking. It is required to remove sulfur and impurities into industrial processes to meet the standards for coking.

The three most basic processes in a coal washing plant are preparation operations (crushing, screening, grading), sorting operations, and post-selection product processing operations before sorting. At the same time, heavy medium coal preparation includes five major processes: coal flow, medium flow, circulating water system, slime water and clean water.

Sieving: The operation of dividing a mixture of different particle sizes into various granules by using a perforated sieve surface is called sieving. The machine used for drying is called a sieving machine or a sieve.

Crushing: The process of pulverizing large pieces of material into small particles is called crushing. The machine used for crushing is called a crusher. The material is crushed mainly by mechanical methods, and there are several main methods such as crushing, chopping, breaking, crushing and grinding.

Washing coal: It uses different physical and physical-chemical properties from other materials. It uses mechanical methods to remove impurities mixed in raw coal in the coal preparation plant, and divides it into products of different quality and specifications to meet the needs of different households. Commonly used coal preparation methods include jigging coal preparation and heavy medium coal preparation.

Jigging coal washing: The coal preparation process is carried out in a vertical pulsating medium according to the difference in particle density. Heavy medium coal washing: In media with a density greater than 1g/cm, coal is selected according to the difference in particle density, which is called heavy medium coal preparation or heavy medium coal preparation. Heavy medium coal preparation is generally classified. The sorting lump coal is generally carried out by gravity using a heavy medium sorting machine; the sorting coal is carried out by a gravity medium swirler under the action of centrifugal force.

The clean coal is de-packed by de-screening, dewatering, and then enters the centrifuge for secondary dewatering and then into the clean coal belt conveyor. Medium coal and vermiculite use a double-channel de-screening machine, and the intermediate surface of the dewatering screen surface separates the medium coal from the vermiculite. The coal and vermiculite on the sieve are transported to the medium coal and vermiculite unloading point by the belt conveyor.

clean coal, medium coal, vermiculite curved screen, and de-sieving sieve shall be used in a qualified medium drum for reuse. The clean coal, medium coal, and vermiculite off-screening of the second-stage sieve are dilute medium; the clean coal is thinned to the fine coal barrel and then hit the magnetic separator, the medium coal and the vermiculite flow from the medium to the middle and the thin The barrel is hit to the middle and the magnetic separator, and the above magnetic separation concentrate flows into the qualified medium barrel for recycling.

This design does not have a medium grinding system. It is added with qualified magnetite powder. The specific process is to use high-pressure water (P=0.5MPa) to flush the magnet powder into the collection pit and pump it to the magnetic field. The magnetic separation of the machine is selected, and the magnetic separation concentrate flows into the qualified medium barrel to realize the medium addition.

After the fine coal magnetic separator tailings are transferred to the fine coal tailings barrel, the pump is used to classify the classifier cyclone, and the cyclone bottom stream is recovered by high frequency sieve to recover the coarse coal slime. Go in the clean coal. The demineralized sieve sifting water and the tailings water of the medium coal and vermiculite magnetic separator enter the coal slurry tank, pumped to the classification cyclone for classification, the bottom of the cyclone enters the high-frequency sieve, and the high-frequency sieve is mixed with the medium coal. Go in. The cyclone overflows and the high-frequency sieve sifts down the water to float.

The cyclone overflows through the slurry preparation device for slurry pretreatment and then enters the flotation machine for flotation. The flotation concentrate enters the flotation concentrate pool and is pumped. The filter press, after pressure filtration, obtains flotation clean coal, which is transported by the belt to the clean coal yard together with the fine coal dewatering sieve and the coarse coal recovered by the high-frequency sieve. The filtrate did not circulate. The flotation tailings well enter the thickener for concentration of the slime.

The products produced after the coal washing process are generally divided into vermiculite, medium coal, class B clean coal, and grade A clean coal. After the coal washing process, the finished coal is usually called clean coal. By washing coal, the coal transportation cost can be reduced and the coal can be improved. Utilization rate, clean coal is generally used as fuel energy. Bituminous coal is generally used for coking. It is required to remove sulfur and impurities into industrial processes to meet the standards for coking.

The hydrocyclone can effectively classify and concentrate the slime water and has a simple structure and easy maintenance. It is widely used in coal preparation plants. Wear-resistant ceramic liner is a wear-resistant material for material transportation equipment in petroleum, mining, steel mills, power plants and other industries or liquids flowing through the surface of the pipeline. The main function is

Through years of development and introduction of absorption, the level of coal washing technology and technical equipment has been continuously improved, and the heavy media, jigging, vibrating screen technology and composite dry coal washing technology have developed rapidly, forming a variety of types and series of washing equipment. Coal washing equipment is important equipment for industrial raw materials and energy

The slime treatment of large coal preparation plants mainly relies on equipment such as thickeners and filter presses. However, most of the large ordinary thickeners are designed for the use of metallurgical mines, which have the disadvantages of large investment and low efficiency, especially Accidents such as uneven feeding and power outages will cause crushing and damage the driving system

Cage drum screen is another new generation of screening equipment after plane vibrating screen and cantilever vibrating screen. It is widely used for screening various solid fuels with a particle size below 400mm. Cage drum screen has many advantages such as wide adaptability of coal type, simple coal feeding mode, high screening efficiency, large screen component, low energy consumption, low

coal preparation plant | coal preparation process | coal washing | m&c

coal preparation plant | coal preparation process | coal washing | m&c

Coal preparation plant is a coal processing plant that include a series of processes: raw coal screening, crushing, coal washing, separation, clean coal dewatering and slime recycling. Which can separate coal from impurities, remove mineral impurities from raw coal and divide it into different specifications of products.

Raw coal is mixed with various mineral impurities in the process of formation, and inevitably mixed with rocks and other impurities in the roof and floor in the process of mining and transportation. So the raw coal must be prepared, the main purpose of coal preparation can be summarized as follows:

Crushing & Screening: Raw coal is transported to crushing workshop by belt conveyor. First, it is pre screened by a circular vibrating screen with a sieve opening of 50 mm. +50mm materials and extra large gangue enter the crusher and are crushed to 50mm, and then transported to the coal washing workshop together with -50mm raw coal that under the vibrating screen.

Jig Density Separation: Raw coal in the coal washing workshop is distributed to two raw coal buffers by scraper transporters, and two chain coal feeders are fed into two jigs respectively. Raw coal is divided into clean coal, medium coal and gangue in the jigs.

After the medium coal and gangue are dewatered by the bucket elevator, they enter the medium coal and gangue bunker respectively, and then transported by the automobile as the final products. The clean coal is graded and dewated by a linear vibrating screen with sieve hole of 13mm, and the coal under the screen enters the pit for grading.

Clean Coal Dewatering: The 13-0.5mm clean coal in pit is first dewated by bucket elevator, secondly dewated by centrifuge machine, and then transported to the clean coal storage yard by belt conveyor as the final product together with the clean coal on the screen.

Flotation: The overflow from the pit enters the flotation feed pool and is pumped to the pulp preprocessor through the slurry pump. The foaming agent and collector are added to the pulp preprocessor, and the coal slime water after adding auxiliaries flows into the flotation machine.

-0.5mm slime is separated into clean coal and tailings in the flotation machine. The flotation clean coal flows into the flotation concentrate pool and is pumped to the clean coal filter press for dewatering. The dehydrated flotation clean coal is mixed with jigging clean coal as the final product.

Tailings Concentration: Floation tailings flows into the tailings pool of the concentrator workshop and then pumped to the paste thickener, usually 2 paste thickeners are required to stand by each other to ensure that when an accident occurs in the thickener, the slime water will not be drained out.

Slime Management: The bottom flow of the concentrator(thickener machine) is dehydrated by the filter press, and the filtered slime is transported to outside of the coal preparation plant. The overflow of the concentrator and the filtrate of the filter press flow into the circulating pool in the concentration workshop, which is pumped to the jig for recycling use.

CRF Circulating Water: The water of the whole coal preparation plant needs to be recycled, because the water cost much in a wet coal preparation plant, Usually the repeated utilization rate of water needs to be more than 90%, and the unit supplementary water quantity is less than 0.15m / t (raw coal).

[Coal Washing]: As coal preparation plant is divided into dry preparation and wet preparation, the processes of coal preparation with jig and heavy medium cyclones generally need to use water as the separaton medium, so it is also known as a coal washing plant. While the coal processing with air separation, screen separation or manual separation, etc. that without use of water is called a coal preparation plant or dry coal beneficiation.

Specs- With master meter, output capacity 1 000 ton/hr, feed size 150mm x 150mm or more, max feed height 3600mm, min hoper capacity 8m3, triple deck vibration screen of min size 1520mm x 6100mm, Diesel powered and Coal size output 40mm

coal preparation plant process and equipment for coal washing | lzzg

coal preparation plant process and equipment for coal washing | lzzg

The necessity of coal preparation Various mineral impurities are mixed in the raw coal mining process. The quality of raw coal is affected by technical equipment and geological conditions. The quality of raw coal is less and less, the meteorite mixed with raw coal is increased, the ash is increased, the content of coal and pulverized coal is increased, and moisture is increased. The coal washer removes impurities from the raw coal, reduces ash and sulfur, improves coal quality, and meets the needs of users. After the coal is washed, the meteorite can be disposed of on site, which can reduce the inefficient transportation and create conditions for the comprehensive utilization of coal gangue. Coal washing is an indispensable process for deep processing of coal. Coal preparation plant also named coal wash plant. The coal directly mined from the mine is called raw coal. The raw coal is mixed with many impurities during the mining process, and the quality of the coal is different. The coal with small internal ash and large internal ash is mixed. together. Coal washing is an industrial process in which impurities in raw coal are removed or high-quality coal and inferior coal are classified. Coal preparation process Coal wash processing, meteorite processing, material and equipment transportation constitute the mine ground system. The ground coal processing system consists of coal, sieving, crushing, coal preparation, storage and loading. It is the main body of mine ground production. Screening The operation of dividing the mixture of different particle sizes into various granules by using a perforated screen surface is called sieving. The machine used for drying is called a sieving machine or a vibrating screen. In coal preparation plants, screening operations are widely used in raw coal preparation and processing. According to different screening methods, it is divided into dry screening and wet screening. BrokenThe crushing operations in the coal preparation plant mainly have the following requirements:1) Adapt to the requirements of the selected particles; the coal particles that can be processed by the selected machinery have a certain range, and the large pieces exceeding this range must be crushed before being washed; 2) Some coals are quickly caught by coal and vermiculite. Yancoal, in order to select clean coal from it, needs to be broken into smaller particles to separate coal from tantalum coal; 3) to meet the users particle requirements and to quickly crush the selected product or coal to certain particle size. The material is crushed mainly by mechanical methods, and there are several main methods such as crushing, chopping, breaking, crushing and grinding. Coal preparation Using different physical and physical-chemical properties from other materials, mechanically remove impurities in the raw coal in the coal preparation plant and divide it into products of different quality and specifications to meet the needs of different households. The modern coal washing plant is a continuous machining process consisting of many operations. Storage Coal storage bin: In order to regulate the imbalance between production, transportation, and sales, and ensure the normal and balanced production of the mine and transportation departments, a coal bin with a certain capacity is set up, and the finished coal is accepted to ensure smooth delivery and finalization. Loading stage. The invest of a coal wash plant Generally speaking, medium-sized coal washing plants have a capacity of 450,000 tons to 900,000 tons. The production system (note that the production system) is about 20 yuan/ton of investment in private enterprises. The profit difference is also large, and there are factors such as process flow, coal quality, management, market, etc., but if the scale can be completed, the profit will be profitable. Profit from tons of coal from 50-200 yuan. Taking a coal washing plant in Indonesia as an example, the coking coal preparation plant with an annual processing capacity of 4 million tons can increase the processing capacity per hour to more than 700 tons, and the power consumption, media consumption, fuel consumption, and water consumption are all reduced. At present, the whole plant consumes 1.42 kg. / ton, flotation fuel consumption 0.67 kg / ton dry slime, water consumption 0.09 cubic meters / ton, electricity consumption 9.32 degrees / ton. In 2017, it imported 1.682 million tons of raw coal, produced 977,000 tons of clean coal products, recovered 59.35% of clean coal and created a profit of 160 million yuan. Equipment needed for coal wash processing The equipment and process of the coal washing plant are related. The three most basic processes of the coal wash plant are the preparation work before the sorting (crushing, screening, grading), the sorting operation, and the processing of the selected products. At the same time, heavy medium coal preparation includes five major processes: coal flow, medium flow, circulating water system, slime water, and clean water. For example The annual selection of 1 million tons of raw coal, the technical process is 50 ~ 0mm raw coal de-sludge, using three-product heavy medium cyclone sorting, coarse coal slurry by TBS sorting, fine coal slurry flotation, tail coal Combined washing process of concentrated pressure filtration. Its main equipment is: pressureless three-product heavy medium cyclone, flotation machine, fine coal de-screening, magnetic separator, pressure filter, quick-open diaphragm press, thickener and so on. slime coal dewatering screen Specific equipment list The re-election equipment includes: heavy medium sorting machine, heavy medium cyclone Flotation equipment includes: flotation machine, flotation column, flotation bed, the slurry preprocessor Dewatering equipment: centrifuge,filter press, slime dewatering screen Others: magnetic separator, air dryer, air compressor, pump, curved screen, belt, scraper, grading cyclone, TBS, interference bed, Spiral Classifier Since its establishment, LZZG has designed and produced a large number of high-quality coal washing equipment for many coal washing plants by using a full set of mechanical equipment such as forging, turning, milling, planning and welding. It has been trusted by users and contributed to the promotion of social and economic development. Through years of production practice, we have accumulated rich production experience, complete production technology, perfect testing equipment, strong technical force and a complete set of scientific management system, so that the companys scale continues to grow.

Various mineral impurities are mixed in the raw coal mining process. The quality of raw coal is affected by technical equipment and geological conditions. The quality of raw coal is less and less, the meteorite mixed with raw coal is increased, the ash is increased, the content of coal and pulverized coal is increased, and moisture is increased. The coal washer removes impurities from the raw coal, reduces ash and sulfur, improves coal quality, and meets the needs of users. After the coal is washed, the meteorite can be disposed of on site, which can reduce the inefficient transportation and create conditions for the comprehensive utilization of coal gangue.

Coal washing is an indispensable process for deep processing of coal. Coal preparation plant also named coal wash plant. The coal directly mined from the mine is called raw coal. The raw coal is mixed with many impurities during the mining process, and the quality of the coal is different. The coal with small internal ash and large internal ash is mixed. together. Coal washing is an industrial process in which impurities in raw coal are removed or high-quality coal and inferior coal are classified.

Coal wash processing, meteorite processing, material and equipment transportation constitute the mine ground system. The ground coal processing system consists of coal, sieving, crushing, coal preparation, storage and loading. It is the main body of mine ground production.

The operation of dividing the mixture of different particle sizes into various granules by using a perforated screen surface is called sieving. The machine used for drying is called a sieving machine or a vibrating screen. In coal preparation plants, screening operations are widely used in raw coal preparation and processing. According to different screening methods, it is divided into dry screening and wet screening.

BrokenThe crushing operations in the coal preparation plant mainly have the following requirements:1) Adapt to the requirements of the selected particles; the coal particles that can be processed by the selected machinery have a certain range, and the large pieces exceeding this range must be crushed before being washed; 2) Some coals are quickly caught by coal and vermiculite. Yancoal, in order to select clean coal from it, needs to be broken into smaller particles to separate coal from tantalum coal; 3) to meet the users particle requirements and to quickly crush the selected product or coal to certain particle size. The material is crushed mainly by mechanical methods, and there are several main methods such as crushing, chopping, breaking, crushing and grinding.

Using different physical and physical-chemical properties from other materials, mechanically remove impurities in the raw coal in the coal preparation plant and divide it into products of different quality and specifications to meet the needs of different households. The modern coal washing plant is a continuous machining process consisting of many operations.

Coal storage bin: In order to regulate the imbalance between production, transportation, and sales, and ensure the normal and balanced production of the mine and transportation departments, a coal bin with a certain capacity is set up, and the finished coal is accepted to ensure smooth delivery and finalization. Loading stage.

Generally speaking, medium-sized coal washing plants have a capacity of 450,000 tons to 900,000 tons. The production system (note that the production system) is about 20 yuan/ton of investment in private enterprises. The profit difference is also large, and there are factors such as process flow, coal quality, management, market, etc., but if the scale can be completed, the profit will be profitable. Profit from tons of coal from 50-200 yuan.

Taking a coal washing plant in Indonesia as an example, the coking coal preparation plant with an annual processing capacity of 4 million tons can increase the processing capacity per hour to more than 700 tons, and the power consumption, media consumption, fuel consumption, and water consumption are all reduced. At present, the whole plant consumes 1.42 kg. / ton, flotation fuel consumption 0.67 kg / ton dry slime, water consumption 0.09 cubic meters / ton, electricity consumption 9.32 degrees / ton. In 2017, it imported 1.682 million tons of raw coal, produced 977,000 tons of clean coal products, recovered 59.35% of clean coal and created a profit of 160 million yuan.

The equipment and process of the coal washing plant are related. The three most basic processes of the coal wash plant are the preparation work before the sorting (crushing, screening, grading), the sorting operation, and the processing of the selected products. At the same time, heavy medium coal preparation includes five major processes: coal flow, medium flow, circulating water system, slime water, and clean water. For example The annual selection of 1 million tons of raw coal, the technical process is 50 ~ 0mm raw coal de-sludge, using three-product heavy medium cyclone sorting, coarse coal slurry by TBS sorting, fine coal slurry flotation, tail coal Combined washing process of concentrated pressure filtration. Its main equipment is: pressureless three-product heavy medium cyclone, flotation machine, fine coal de-screening, magnetic separator, pressure filter, quick-open diaphragm press, thickener and so on.

Since its establishment, LZZG has designed and produced a large number of high-quality coal washing equipment for many coal washing plants by using a full set of mechanical equipment such as forging, turning, milling, planning and welding. It has been trusted by users and contributed to the promotion of social and economic development. Through years of production practice, we have accumulated rich production experience, complete production technology, perfect testing equipment, strong technical force and a complete set of scientific management system, so that the companys scale continues to grow.

The coal washing plant added magnesium chloride to the slime water to increase the hardness of the water quality, and successfully solved the problem of the decrease in the hardness of the washing water due to the change of coal quality, which caused the clarified water area of the thickener to show a fine mud cover, the pressure filter discharge

The coal preparation plant generally adopts "cyclone, thickener, filter press (slime sedimentation tank)" processing technology. Under normal circumstances, it is purchased machine polymer flocculant (polyacrylamide). The high-molecular flocculant interacts with slime particles or slime colloids to neutralize the electrical properties of the slime surface, reduce the surface energy, and make the slime particles coagulate and settle. Different molecular weight flocculants

With the continuous deepening of urban construction and transformation, a large amount of construction waste has also been produced. The total amount of construction waste produced in Shaoxing, China last year reached 9.5 million cubic meters. Only the four road construction currently implemented in the urban area will generate 6 million tons of construction waste during the road demolition process.

The landfill is still a common sludge treatment method worldwide. Most landfill sites are mixed landfills. Due to (i) stricter and stricter environmental management, (ii) large amounts of greenhouse gas emissions from the organic degradation process, (iii) secondary pollution caused by leachate liquid, (iv) scarce land resources occupied by landfills, etc. Landfill laws are being gradually abolished in many countries.

Related Equipments