Heavy medium solution suspension coal preparation equipment
By designing heavy medium solution suspension and coal preparation equipment, using non-toxic heavy medium solution to suspend and separate coal and slag materials, the problems of poor separation effect and waste of resources in the existing technology are solved, and low-cost and efficient coal are achieved Segregation and resource utilization of gangue.
Patent Information
- Application Number
- CN202420739822.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-11
AI Technical Summary
Existing heavy medium coal preparation equipment cannot effectively and thoroughly separate the components of raw coal, and cannot achieve the complete separation of multiple particle-grade coal materials and gangue slag materials. It also has high investment, large area, high operating energy consumption and high cost. and the problem of secondary pollution.
A heavy medium solution suspension coal preparation equipment is designed, including heavy medium suspension coal preparation tank, rotating bulk tray, first and second stage heavy medium solution jet impulse device, coal carbon extraction device, slag extraction device, The heavy medium circulation jet device and the waste liquid purification/humid sludge recovery device carry out suspension separation of coal and slag material through a non-toxic and odorless heavy medium solution with a density of 1.35 to 1.7 g/cm3, and realize resource utilization.
It has achieved a complete separation of raw coal and coal gangue, reduced investment, land occupation and energy consumption, avoided secondary pollution, and had good separation effect, which is suitable for the resource utilization of multiple particle-grade coal materials.
Smart Images
Figure CN222343101U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to coal preparation equipment, in particular to heavy medium solution suspension coal preparation equipment. Background Art
[0002] Coal is still an indispensable basic fossil energy in my country. At present, heavy medium coal preparation technology is a common technology in the industrial production of raw coal preparation. It is mainly a gravity coal preparation method that uses heavy liquid or heavy suspension with a density greater than water and between coal and gangue as a medium to achieve separation. Depending on the medium used, it can be divided into two categories: heavy liquid coal preparation and heavy suspension coal preparation. Heavy liquid refers to aqueous solutions of certain inorganic salts and high-density organic solutions, such as ferric chloride, manganese chloride, calcium chloride, barium chloride and trichloroethane, carbon tetrachloride, pentachloroethane or dibromoethane. In the end, they are rarely used due to their strong corrosiveness, health hazards, difficulty in recycling, high prices and secondary pollution. Heavy suspension is a two-phase fluid with a certain density and in a suspended state prepared by high-density solid particles, such as barite powder, ferrosilicon powder, and magnetite powder, and water. When the raw coal is fed into a separator filled with this suspension, the coal with a density less than the suspension floats up, and the gangue (or medium coal) with a density greater than the suspension sinks, achieving separation by density.
[0003] Existing heavy medium coal preparation equipment generally includes heavy medium shallow trough separation equipment, heavy medium lifting wheel separation equipment, and heavy medium cyclone.
[0004] The sorting of heavy medium shallow trough sorting equipment is based on the Archimedes principle. The raw coal and heavy medium suspension are mixed in the sorting machine. Due to the difference in density, the coal slurry is under the action of horizontal flow and upward flow. The floating objects with lower density are transported to the overflow weir for discharge, while the sediments with higher density fall to the bottom of the trough and are scraped to the discharge port by the scraper conveyor for discharge. These two liquid flows have a very important influence on the quality of sorting. Generally speaking, the stability of the suspension is determined by the size of the upward flow velocity, and the lower limit of the feed particle size is determined by the size of the horizontal flow velocity. Usually, the lower limit of the feed particle size is 6mm, which is the limit, and it is mostly used for coal sorting with a particle size of 13mm or 25mm or more.
[0005] Lifting wheel heavy medium separators generally include vertical wheel type and inclined wheel type. Most of the screened coal needs to enter the heavy medium suspension tank for sorting. Its principle is mainly to adjust the density of the suspension so that the clean coal with a density less than that of the suspension floats to the surface and is scraped out by the coal discharge wheel. The gangue and high-ash coal with a density greater than that of the suspension are scraped out by the gangue discharge scraper and discharged into the chute. This equipment is large in size and occupies a large area. It also needs to classify and sort the coal particle size. If multi-stage sorting is performed, a large investment is required. It is conventionally used for sorting above 13mm particle size.
[0006] For the separation of coal particles below 6 mm, it is often necessary to use equipment such as heavy medium cyclones.
[0007] Heavy medium cyclone is a coal separator that uses a centrifugal force field that is dozens or even hundreds of times stronger than gravity. It has strict particle size classification and is generally used to separate coal particles with a particle size of 1.5mm-13mm. For coarse coal slime with a particle size below 1.5mm, spiral separators are often used, or even plate and frame filter presses are used to wash the raw coal.
[0008] From the above, it can be seen that the existing coal preparation equipment is unable to effectively achieve the complete separation of coal and slag of various particle sizes with low investment, and effectively separate the various components in the raw coal, so as to achieve the refined grouping and utilization of coal, coal gangue slag and humus fertilizer.
[0009] In summary, the existing heavy medium coal preparation equipment is unable to effectively and thoroughly separate the various components of raw coal, and is unable to achieve the effective separation of coal materials of various particle sizes and coal gangue slag materials as well as organic matter in coal gangue. It is necessary to combine multiple equipment to achieve the coarse separation of coal materials of various particle sizes and slag materials, and produce a large amount of low calorific value coal gangue that cannot be completely separated, which not only wastes limited resources, but also requires the investment of multiple equipment with large footprint, high operating energy consumption and high cost for joint disposal. Utility Model Content
[0010] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a heavy medium solution coal preparation equipment and method which has low investment, small footprint, low energy consumption, low operating cost and no secondary pollution and can separate coal in raw coal from clean gangue slag and organic humus in coal gangue with good separation effect.
[0011] The utility model solves the technical problem by adopting the following technical scheme: a heavy medium solution suspension coal separation equipment, mainly comprising a heavy medium solution suspension coal separation tank, wherein the bottom center of the heavy medium suspension coal separation tank is provided with a rotating bulk material disk, the bottom side is provided with a slag material discharge port, the side wall of the tank body is provided with a feed port, the top of the tank body is provided with a coal material outlet, a first-stage heavy medium solution spraying and swaying device is provided below the feed port on the inner side wall of the tank, and a second-stage heavy medium solution spraying and swaying device is arranged in an annular manner outside the rotating bulk material disk at the bottom of the tank; the heavy medium suspension coal separation tank contains a slag material with a density of 1.35-1.7 g / cm 3The lump and granular coal or coal gangue falls into the heavy medium solution in the tank from the feed port on the side wall of the tank body, and the coal and slag are suspended and dispersed for the first time through the first-stage heavy medium jet and impaction arranged below the feed port in the tank. The lump and granular coal in the dispersed material is impacted and floated, and the lump and granular slag sinks to the rotating bulk material plate at the bottom center of the tank, and is scattered by the rotating bulk material plate and impacted by the second-stage heavy medium jet and impaction arranged in a ring to achieve the second suspension and dispersion separation of residual carbon and slag. The residual carbon particles in the slag are impacted and floated, and the slag scattered to the periphery of the tank is discharged through the slag discharge port on the side of the bottom. The lump and granular coal impacted, floated or suspended in the heavy medium solution in the tank is collected by the coal carbon extraction device on the upper part of the tank body.
[0012] Furthermore, the density is 1.35 to 1.7 g / cm 3 The heavy medium solution is preferably non-flammable, non-toxic, odorless, and free of harmful elements such as fluorine, chlorine, sulfur, phosphorus, alkali, heavy metals, and organic pollutants.
[0013] Furthermore, the heavy medium solution suspension coal preparation equipment is also provided with a coal extraction device, a slag extraction device, and a heavy medium circulation injection device;
[0014] The coal extraction device comprises an extraction mechanism for water-containing coal and a coal discharge mechanism; a coal drainage mechanism and a coal waste liquid collection mechanism may also be provided; the feed end of the coal extraction device is connected to the coal outlet of the heavy medium solution suspension coal separation tank or is located in the heavy medium solution suspension coal separation tank; the coal is extracted and separated by the coal extraction mechanism or extracted and separated by the coal extraction mechanism and drained and separated by the coal drainage mechanism, the coal separation liquid enters the heavy medium solution suspension coal separation tank and / or the coal waste liquid collection mechanism, and the coal is collected by the coal discharge mechanism. The coal extraction mechanism is one or more of a chain conveyor, a chain scraper, a centrifugal dehydrator, a scraper conveyor, a filter bucket elevator, and a roller scraper; the coal drainage mechanism is one of a vibrating screen, a fixed screen or screen plate, a drum screen, a disc screen, a belt filter, or a centrifugal dehydrator; the coal waste liquid collection mechanism includes a waste liquid trough or a waste liquid bucket for waste liquid collection; the coal discharge mechanism is an existing commonly used equipment such as a chute or a belt conveyor or a screw conveyor.
[0015] The slag extraction device includes a water-containing slag lifting mechanism and a slag discharging mechanism, and may also be provided with a slag drainage mechanism and a slag waste liquid collection mechanism. The feed port of the slag lifting mechanism is connected to the slag discharge port of the heavy medium solution suspension coal separation tank; the slag is extracted and separated by the slag lifting mechanism or extracted and roughly separated by the slag extraction mechanism and then drained and separated by the slag drainage mechanism, the slag separation liquid is collected by the heavy medium solution suspension coal separation tank and / or the slag waste liquid collection mechanism, and the slag is collected by the slag discharging mechanism. The slag lifting mechanism is one of a screw conveyor, a filter bucket elevator, a scraper conveyor, and a chain plate scraper; the slag drainage mechanism is one of a vibrating screen, a drum screen, a disc screen, a belt filter, or a centrifugal dehydrator; the slag waste liquid collection mechanism includes a waste liquid tank or a waste liquid bucket for waste liquid collection; the slag discharging mechanism is an existing commonly used equipment such as a chute or a belt conveyor or a screw conveyor or a coal bunker.
[0016] The heavy medium circulation injection device mainly includes at least one pump and a fluid particle enrichment and separation mechanism. The fluid particle enrichment and separation mechanism is provided with a fluid feed port, an enriched coarse particle fluid outlet and a fine particle fluid outlet. The fluid feed port of the heavy medium circulation injection device is connected to the upper part of the heavy medium solution suspension coal separation tank through a pipe or a groove, or the fluid particle enrichment and separation mechanism is located in the heavy medium solution suspension coal separation tank, and the fine particle fluid outlet is connected to the first-stage heavy medium solution injection and swirl device and the second-stage heavy medium solution injection and swirl device of the heavy medium solution suspension coal separation tank through a pump. The enriched coarse particle fluid outlet is connected to the drainage mechanism or a separate drainage mechanism of the heavy medium solution suspension coal separation tank or the coal extraction device, which is used to recover the enriched coarse carbon particles. The fluid particle enrichment and separation mechanism preferably has a filter screen or a vibrating filter screen or a vibrating filter screen with a larger area or a coarse separation grid.
[0017] Furthermore, the heavy medium solution suspended coal preparation equipment is also provided with a carbon powder extraction device; the carbon powder extraction device includes a distribution mechanism, a vibration drainage mechanism, a waste liquid collection mechanism, and a carbon powder discharge mechanism. The distribution mechanism of the carbon powder extraction device is connected to the outlet of the coarse particle enrichment fluid of the heavy medium circulation injection device and the outlet of the waste liquid collection mechanism of the coal extraction device through a pipeline or a pump connected to the pipeline. The distribution mechanism of the carbon powder extraction device separates and extracts the carbon powder in the waste liquid through the vibration drainage mechanism, the extracted carbon powder is discharged by the carbon powder discharge mechanism, and the carbon powder waste liquid is collected by the carbon powder waste liquid collection mechanism of the carbon powder extraction device; the distribution mechanism of the carbon powder extraction device can also be connected to the original liquid and waste liquid outlet of the slag waste liquid collection mechanism of the slag extraction device to recover the original liquid brought out of the slag extraction device.
[0018] Furthermore, the heavy medium solution suspension coal preparation equipment is also provided with a waste liquid purification / humus mud recovery device, which includes one or more waste liquid inlets, filter chambers, clean liquid outlets, and humus mud discharge mechanisms. The waste liquid inlet of the waste liquid purification / humus mud recovery device is connected to the outlets of the waste liquid collection mechanisms of the slag extraction device and the carbon powder extraction device through pipelines or pumps connected to the pipelines, respectively; the clean liquid outlet of the waste liquid purification / humus mud recovery device is connected to the heavy medium suspension coal preparation tank through a pipeline or a pump connected to the pipeline for direct reuse, or is connected to the liquid inlet of the heavy medium solution replenishing device through a pipeline or a pump connected to the pipeline.
[0019] Furthermore, the heavy medium solution suspension coal preparation equipment is also provided with a heavy medium solution replenishing device; the heavy medium solution replenishing device comprises a heavy medium solution barrel, a feeding mechanism and a stirring mechanism; the heavy medium solution barrel is provided with a purified liquid inlet, a water inlet, a feeding port, a stirring port and one or more liquid outlets; the purified liquid inlet is connected to the clean liquid outlet of the waste liquid purification / humus mud recovery device through a pipeline or a pump connected to the pipeline; the liquid outlet is connected to the tank body of the heavy medium solution suspension coal preparation tank or the heavy medium circulation injection device through a pump connected to the pipeline; the feeding port of the heavy medium solution barrel is connected to the feeding mechanism; the stirring mechanism of the heavy medium solution replenishing device stirs the heavy medium in the heavy medium solution barrel through the stirring port, and the water inlet is used to add clean water for liquid preparation.
[0020] The feeding mechanism of the heavy medium solution replenishing device adopts manual feeding through the feeding port or through a screw conveyor, a belt conveyor, a belt scale or other commonly used unpacking and feeding devices; the stirring mechanism can adopt a conventional stirring device, or a circulating pump for circulating stirring, that is, the liquid outlet and the stirring port are connected through a pipeline and the inlet and outlet of the circulating pump.
[0021] Furthermore, the heavy medium solution suspension coal preparation equipment is also provided with a clean water storage and flushing device, which includes a storage and delivery water tank, a clean water pump and one or more spray pipes or spray guns or spray gun groups; the storage and delivery water tank is provided with a water inlet and a water outlet; the spray pipes or spray guns or spray gun groups are respectively installed on the coal extraction device and / or the slag extraction device and / or the carbon extraction device, and are used to wash the coal and / or the slag and / or the carbon, and recover the heavy medium; the spray pipes or spray guns or spray gun groups spray washing water respectively from the coal extraction device and / or the slag extraction device and / or the carbon extraction device. The waste liquid collecting mechanism of the extraction device and / or the slag extraction device and / or the carbon fine extraction device collects the waste liquid; the water inlet of the storage and delivery water tank is connected with the external water source, the water outlet is connected with the inlet of the clean water pump, and the outlet of the clean water pump is respectively connected with the water inlet of the heavy medium solution replenishing device, the nozzle or spray gun or spray gun group on the coal extraction device, the nozzle or spray gun or spray gun group on the slag extraction device, and the nozzle or spray gun or spray gun group on the carbon fine extraction device through pipelines or pipeline valves to adjust or recover the heavy medium.
[0022] Furthermore, the heavy medium solution replenishing device is also provided with a temperature increasing mechanism, which is an electromagnetic induction coil arranged around the heavy medium solution barrel or an electric heater located in the heavy medium solution barrel, so as to increase the temperature and improve the solubility of the heavy medium.
[0023] Furthermore, the heavy medium solution jet-swing device may also be provided with a pneumatic suspension device, which is connected to a pneumatic suspension port at the bottom or side of the heavy medium solution suspension coal preparation tank, and is used to pneumatically suspend the heavy medium solution; the pneumatic suspension port may be connected to the first-stage heavy medium solution jet-swing device and / or the inlet of the first-stage heavy medium solution jet-swing device.
[0024] Furthermore, the heavy medium solution suspended coal preparation equipment is also provided with a raw coal pretreatment device, which is connected to the feed port of the heavy medium solution suspended coal preparation tank, and the pretreated raw coal or coal gangue is fed into the heavy medium solution suspended coal preparation tank; the raw coal pretreatment device includes a screening mechanism and / or a selective crushing mechanism, and the screening mechanism is connected to the inlet of the selective crushing mechanism, and the coal gangue is crushed according to the particle size classification, and the materials on the screen and / or under the screen are selectively crushed or crushed to a particle size of <150mm, preferably <25mm; the screening mechanism adopts one or more of a vibrating screen, a drum screen, and a roller screen, and the selective crushing mechanism is a device for selectively crushing carbon particles, including an existing commonly used crusher or an intelligent ore dressing machine with machine vision for selectively crushing large carbon particles, preferably an impact or heavy hammer crusher with adjustable crushing force.
[0025] Furthermore, the raw coal pretreatment device is also provided with a strong magnetic separation mechanism, which is used to sort and remove harmful substances from the slag before the raw coal enters the heavy medium solution suspension coal separation tank or after separation, so as to group and utilize the slag; the strong magnetic separation mechanism is arranged on the screening mechanism or conveyor belt in front of the feed port of the heavy medium solution suspension coal separation tank or on the filter screen or conveyor belt at the outlet of the slag extraction device.
[0026] Furthermore, the waste liquid purification / humus mud recovery device may also be provided with a waste liquid buffer tank for temporarily storing the waste liquid of the waste liquid collecting mechanism of the carbon powder extraction device; the liquid inlet of the waste liquid buffer tank is connected to the liquid outlet of the waste liquid collecting mechanism of the carbon powder extraction device and / or the liquid outlet of the waste liquid collecting mechanism of the slag extraction device through a pump or pipeline connected to the pipeline, and the outlet of the waste liquid buffer tank is connected to the waste liquid inlet of the waste liquid purification / humus mud recovery device.
[0027] Furthermore, the tank body of the heavy medium solution suspension coal preparation tank is also provided with a wear-resistant lining plate, which mainly includes one of a steel lining plate, a polyethylene lining plate, a high molecular polyethylene lining plate and a polyurethane lining plate.
[0028] Furthermore, the heavy medium solution suspended coal preparation equipment is also provided with an electric control system and a bracket, and the electric control system is electrically connected to the heavy medium solution suspended coal preparation tank, the coal extraction device, the slag extraction device, the heavy medium circulation injection device and the carbon powder extraction device and / or the heavy medium solution replenishment device and / or the waste liquid purification / humus mud recovery device and / or the clean water storage and flushing device and / or the raw coal pretreatment device and / or the pneumatic suspension device; the heavy medium solution suspended coal preparation tank, the coal extraction device, the slag extraction device, the heavy medium circulation injection device and the carbon powder extraction device and / or the heavy medium solution replenishment device and / or the waste liquid purification / humus mud recovery device and / or the clean water storage and flushing device and / or the raw coal pretreatment device and / or the pneumatic suspension device are fixed or combinedly fixed on the bracket.
[0029] The working principle of the heavy medium solution suspension coal preparation equipment of the utility model is that the raw coal obtained after being processed by the raw coal pretreatment device has an inlet density of 1.35-1.7g / cm 3 The coal is directly suspended or floated by utilizing the buoyancy of the coal in the heavy medium and the first-stage heavy medium solution jetting and swaying device, and the coal falls into the rotating scattering plate at the bottom center of the device and is scattered. The scattered residual carbon and slag are subjected to secondary hydraulic or pneumatic swaying by the second-stage heavy medium solution jetting and swaying device arranged around the rotating scattering plate, so that the residual carbon in the slag at the bottom is suspended or floated. The residual carbon and coal are extracted together by the coal extraction device, and the gangue slag is extracted from the slag discharge port through the slag extraction device. The separation is carried out as a clean raw material for the resource utilization of coal gangue. The above-mentioned secondary shock and suspension by shock and suspension and dispersion can greatly reduce the coal content in the slag, and the coal preparation and separation is more thorough; the carbon powder extraction device and / or the heavy medium solution adjustment device and / or the waste liquid purification / humus mud recovery device and / or the clean water storage and flushing device are used to effectively recover the heavy medium and water resources, and at the same time, the carbon powder and humus mud are produced, and the coal material and the clean coal gangue that are easy to be utilized as resources are completely separated by simple equipment, and the humus components in the coal gangue that are coal industry pollutants are effectively separated, and reasonable resource utilization is achieved.
[0030] The heavy medium solution suspension coal preparation equipment of the utility model has low investment, small footprint, low operating energy consumption and low cost; it is simple to operate and can effectively separate various mineral components in raw coal and coal gangue, and has good separation effect on coal material, slag material, and organic humus in coal gangue, which can basically achieve complete separation and can be used as resources efficiently and reasonably respectively; it has no harmful waste slag, waste water, and waste gas emissions and is green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 This is a schematic diagram of the top view of the heavy medium solution suspension coal preparation equipment embodiment 1 of the utility model;
[0032] Figure 2 for Figure 1 AA-direction structural diagram;
[0033] Figure 3 for Figure 1 BB structural diagram;
[0034] Figure 4 This is a structural schematic diagram of Example 2 of the heavy medium solution suspension coal preparation equipment of the utility model;
[0035] Figure 5 for Figure 2 The schematic diagram of the top view of the structure of the second embodiment of the utility model is shown;
[0036] Figure 6 for Figure 2 The CC structure diagram of the second embodiment of the utility model is shown;
[0037] Figure 7 for Figure 2 The schematic diagram of the structure of the waste liquid purification / humus mud recovery device of Example 2 of the utility model is shown;
[0038] Figure 8 for Figure 2 The structural schematic diagram of the heavy medium solution barrel of Example 2 of the utility model is shown;
[0039] Fig. 9 This is a structural schematic diagram of Example 3 of the heavy medium solution suspension coal preparation equipment of the utility model.
[0040] In the figure, 1-heavy medium solution suspension coal preparation tank, 101-rotating bulk material plate, 102-feeding port, 103-slag material discharge port, 104-coal material outlet, 111-first stage heavy medium solution injection and swaying device, 112-second stage heavy medium solution injection and swaying device, 2-coal extraction device, 201-feeding end, 21-extraction mechanism, 22-coal material drainage mechanism, 23-coal material waste liquid collection mechanism, 24-coal discharge mechanism, 3-slag material extraction device, 31-slag material lifting mechanism, 32-slag material drainage mechanism, 33-slag material waste liquid collection mechanism, 34-slag discharge mechanism, 4-heavy medium circulation injection device, 41-first liquid pump, 41'-second liquid pump, 41"-third liquid pump, 42-fluid particle enrichment and separation mechanism, 421-fluid feed inlet, 422-enriched coarse particle fluid outlet, 423-fine particle fluid outlet, 5-carbon extraction device, 51- material distribution mechanism, 52- vibration drainage mechanism, 53- carbon powder waste liquid collection mechanism, 54- carbon powder discharge mechanism, 6- waste liquid purification / humus mud recovery device, 61- waste liquid buffer tank, 611- carbon powder cleaning waste liquid inlet, 612- slag cleaning waste liquid inlet, 613- cleaning waste liquid outlet, 62- waste liquid inlet, 63- filter chamber, 64- clean liquid outlet, 65- humus mud discharge mechanism, 7- heavy medium solution replenishment device , 71-heavy medium solution barrel, 711-purification liquid inlet, 712-water inlet, 713-feeding port, 714-stirring port, 715-liquid outlet, 72-feeding mechanism, 73-stirring mechanism, 8-clean water storage and flushing device, 81-storage and delivery water tank, 82-clean water pump, 831-spray gun group on coal extraction device, 832-spray gun group on slag extraction device, 833-spray gun group on carbon powder extraction device; 9-bracket. DETAILED DESCRIPTION
[0041] The utility model is further described below in conjunction with embodiments:
[0042] Example 1
[0043] Reference Figure 1-Figure 3The present embodiment comprises a heavy medium solution suspension coal separation tank 1, wherein a rotating bulk material disc 101 is arranged at the bottom center of the heavy medium suspension coal separation tank 1, a slag material discharge port 103 is arranged at the bottom side, a feed port 102 is arranged on the side wall of the tank body, a coal material outlet 104 is arranged on the top of the tank body, a first-stage heavy medium solution spraying and swaying device 111 is arranged below the feed port 102 on the inner side wall of the tank, and a second-stage heavy medium solution spraying and swaying device 112 is arranged in an annular manner outside the rotating bulk material disc 101 at the bottom of the tank; the heavy medium suspension coal separation tank 1 contains a heavy medium solution that is non-flammable, non-toxic, odorless, and does not contain harmful elements and organic pollutants such as fluorine, chlorine, sulfur, phosphorus, alkali, and heavy metals, and blocky granular coal or coal gangue is discharged from the side of the tank body. The feed port 102 on the wall falls into the heavy medium solution in the tank, and the first stage heavy medium jet is arranged below the feed port 102 in the tank to realize the first suspension, dispersion and separation of coal and slag. The block and granular coal in the dispersed material is washed and floated, and the block and granular slag sinks to the rotating bulk material plate 101 at the bottom center of the tank, and is scattered by the rotating bulk material plate 101 and the second stage heavy medium jet is arranged in a ring to realize the second suspension, dispersion and separation of residual carbon and slag. The residual carbon particles in the slag are washed and floated, and the slag scattered to the periphery of the tank is discharged through the slag discharge port 103 on the side of the bottom. The block and granular coal washed and floated in the heavy medium solution in the tank is collected by the coal extraction device 2 on the upper part of the tank body;
[0044] A coal extraction device 2, a slag extraction device 3, and a heavy medium circulation injection device 4 are also provided; the coal extraction device 2 includes a water-containing coal extraction mechanism 21, a coal discharge mechanism 24, a coal drainage mechanism 22, and a coal waste liquid collection mechanism 23; the feed end 211 of the coal extraction device 2 is connected to the coal outlet 104 of the heavy medium solution suspension coal separation tank 1 (another arrangement is that the coal extraction device 2 is located in the heavy medium solution suspension coal separation tank 1); the coal is extracted and separated by the coal extraction mechanism 21 and drained by the coal drainage mechanism 22, the coal separation liquid enters the heavy medium solution suspension coal separation tank 1 and the coal waste liquid collection mechanism 23, and the coal is collected by the coal discharge mechanism 24; the coal extraction device 2 adopts a scraper conveyor; the The coal drainage mechanism 22 adopts a vibrating screen, and the coal waste liquid collection mechanism 23 adopts a waste liquid bucket connected under the vibrating screen; the coal discharge mechanism 24 adopts a chute; the slag extraction device 3 includes a water-containing slag lifting mechanism 31 and a slag discharge mechanism 34, and the feed port of the slag lifting mechanism 31 is connected to the slag discharge port 103 of the heavy medium solution suspension coal preparation tank 1; the slag is extracted and separated after rough separation by the slag lifting mechanism 31, and the slag separation liquid is collected in the heavy medium solution suspension coal preparation tank 1, and the slag is collected by the slag discharge mechanism 34; the slag lifting mechanism 31 adopts a tubular screw conveyor, and the slag discharge mechanism 34 adopts an external belt conveyor (not shown in the figure), which is used to directly transport cleaner slag to the coal gangue slag yard as a raw material for primary black soil;
[0045] The heavy medium circulation injection device 4 includes a first liquid pump 41, a second liquid pump 41' and a fluid particle enrichment and separation mechanism 42. The fluid particle enrichment and separation mechanism 42 is provided with a fluid feed port 421, an enriched coarse particle fluid outlet 422 and a fine particle fluid outlet 423. The fluid feed port 421 of the heavy medium circulation injection device 4 is connected to the upper part of the heavy medium solution suspension coal separation tank 1 through a pipeline, and the fine particle fluid outlet 423 is connected to the liquid inlet pipes of the first-stage heavy medium solution injection and swishing device 111 and the second-stage heavy medium solution injection and swishing device 112 of the heavy medium solution suspension coal separation tank 1 through the first liquid pump 41 and the second liquid pump 42 respectively. The enriched particles at the enriched coarse particle fluid outlet 422 are pumped to the drainage mechanism 22 of the coal extraction device 2 for filtering and recovering the particulate carbon; and necessary brackets 9 are also provided.
[0046] The equipment of this embodiment was used in a coal washing plant in Hunan to carry out a raw coal separation experiment. First, a heavy medium solution with a density of 1.5 g / cm 3 The heavy medium solution is then gradually added into the raw coal through the feed port 102 provided on the side wall of the tank body. The coal in the raw coal is suspended, broken up and separated directly from the feed port 102 by its own buoyancy in the heavy medium solution and the action of the first-stage heavy medium solution jetting and sluicing device 111. The coal and slag that have partially sunk to the bottom are scattered upward by the rotating dispersing plate provided at the bottom center of the device and sluiced by the second-stage heavy medium jetting and sluicing device 112, so that the residual carbon in the raw coal is suspended. The slag sinks to the bottom at the edge of the tank body and is collected by the slag extraction device 3. The suspended residual carbon and coal It is collected by the coal extraction device 2 arranged on the top; after testing, it was found that the coal content in the gangue was 2.15% lower than that of the heavy medium shallow trough sorting equipment used on site. This also directly shows that the equipment of the utility model reduces the amount of coal in the gangue by 2.15% after the impact and suspension device is impacted and suspended. At the same time, the heavy medium solution that is non-flammable, non-toxic, odorless, and does not contain harmful elements such as fluorine, chlorine, sulfur, phosphorus, alkali and heavy metals and organic pollutants is easy for the subsequent secondary utilization of the coal gangue, which is different from the magnetite powder heavy medium used in the on-site heavy medium shallow trough sorting, which affects the subsequent resource utilization of the coal gangue to produce raw black soil.
[0047] Example 2
[0048] Reference Figure 4-Figure 8The main difference between this embodiment and embodiment 1 is that the rotating scattering disc 101 of this embodiment adopts a spiral rotating scattering disc, and the extraction mechanism 21 of the coal extraction device 2 adopts a sprocket type scraper conveyor. The heavy medium solution coal preparation equipment of this embodiment is also provided with a carbon powder extraction device 5, a waste liquid purification / humus mud recovery device 6, a heavy medium solution replenishing device 7, and a clean water storage and flushing device 8; the fluid particle enrichment and separation mechanism 42 of the heavy medium circulation injection device 4 of this embodiment adopts an independently arranged filter box, and the fluid feed inlet 421 of the fluid particle enrichment and separation mechanism 42 is connected to the side of the heavy medium solution suspension coal preparation tank 1 through a pipeline for feeding, and the enriched coarse particle fluid outlet 422 is connected to the carbon powder extraction device 5; the waste liquid outlet of the waste liquid collection mechanism 23 of the coal extraction device 2 is connected to the carbon powder extraction device 5; the raw liquid wastewater of the slag waste liquid collection mechanism 33 of the slag extraction device 3 is connected to the carbon powder extraction device 5, and the cleaning wastewater is connected to the waste liquid purification / humus mud recovery device 6.
[0049] The carbon powder extraction device 5 includes a distribution mechanism 51, a vibration drainage mechanism 52, a carbon powder waste liquid collection mechanism 53, and a carbon powder discharge mechanism 54. The distribution mechanism 51 of the carbon powder extraction device 5 is connected to the coarse particle enrichment fluid outlet 422 of the heavy medium circulation injection device 4 and the raw liquid and waste liquid outlets of the coal waste liquid collection mechanism 23 of the coal extraction device 2 and the slag waste liquid collection mechanism 33 of the slag extraction device 3 through a pipeline. The distribution mechanism 51 of the carbon powder extraction device 5 separates and extracts the carbon powder in the waste liquid through the vibration drainage mechanism 52, the extracted carbon powder is discharged by the carbon powder discharge mechanism 54, and the waste liquid is collected by the carbon powder waste liquid collection mechanism 53 of the carbon powder extraction device 5.
[0050] The waste liquid purification / humus mud recovery device 6 includes a waste liquid buffer tank 61, a waste liquid inlet 62, a filter chamber 63, a clean liquid outlet 64, and a humus mud discharge mechanism 65. The waste liquid buffer tank 61 includes a carbon powder cleaning waste liquid inlet 611, a slag cleaning waste liquid inlet 612 and a cleaning waste liquid outlet 613. The slag cleaning waste liquid inlet 612 of the waste liquid buffer tank 61 is connected to the slag waste liquid collecting mechanism outlet 33 of the slag extraction device 3 by pumping, and the carbon powder cleaning waste liquid inlet 611 is connected to the carbon powder waste liquid collecting mechanism outlet 53 of the carbon powder extraction device 5 by a pump connected to a pipeline; the clean liquid outlet 64 of the waste liquid purification / humus mud recovery device 6 is connected to the liquid inlet of the heavy medium solution replenishing device 7 by a pipeline and pumping.
[0051] The heavy medium solution replenishing device 7 includes a heavy medium solution barrel 71, a feeding mechanism 72 (not shown in the figure) and a stirring mechanism 73. The heavy medium solution barrel 71 includes a purified liquid inlet 711, a water inlet 712, a feeding port 713, a stirring port 714, and two liquid outlets 715. The purified liquid inlet 711 is connected to the clean liquid outlet 62 of the waste liquid purification / humus mud recovery device 6 by a pipeline and pumping; one liquid outlet 715 is connected to the liquid inlet on the side of the heavy medium solution suspension coal selection tank 1 by pumping and a pipeline, and the other liquid outlet 715' is connected to the stirring port 714 by circulating pumping and a pipeline; the feeding port 713 of the heavy medium solution barrel 71 is connected to the feeding mechanism 72; the water inlet 712 is used to add clean water to prepare the liquid; the feeding mechanism 72 of the heavy medium solution replenishing device 7 adopts the feeding port 713 for manual unpacking and loading.
[0052] The clean water storage and flushing device 8 includes a storage and delivery water tank 81, a clean water pump 82 and four spray gun groups 83; the storage and delivery water tank includes a water inlet 811 and a water outlet 812, and the spray gun group 83 is respectively installed on two sets of coal extraction devices 2 and slag extraction devices 3 and carbon powder extraction devices 5, and is used to clean coal, slag, and carbon powder to recover heavy medium. The spray gun group sprays washing water from the coal extraction device 2, the slag extraction device 3, and the coal waste liquid collection mechanism 23 of the carbon extraction device 5, the slag waste liquid collection mechanism 24 of the carbon extraction device 5, and the slag waste liquid collection mechanism 25 of the carbon extraction device 5. The liquid collecting mechanism 33 and the carbon powder waste liquid collecting mechanism 53 collect the waste liquid; the water inlet 811 of the storage and delivery water tank 81 is connected to the municipal tap water network, and the water outlet 812 is connected to the inlet of the clean water pump 82; the outlet of the clean water pump 82 is respectively connected to the water inlet 712 of the heavy medium solution replenishing device 7, the spray gun group 831 on the coal extraction device 2, the spray gun group 832 on the slag extraction device 3, and the spray gun group 833 on the carbon powder extraction device 5 by a pipeline valve to adjust or recover the heavy medium solution.
[0053] The equipment of this embodiment was used in a coal washing plant in Hunan to carry out a raw coal separation experiment. First, a heavy medium solution with a density of 1.48 g / cm 3The non-flammable, non-toxic, odorless, non-fluorine, chlorine, sulfur, phosphorus, alkali, heavy metals and other harmful elements and organic pollutants heavy medium solution is then gradually added into the raw coal through the feed port 102 provided on the side wall of the tank body. The coal in the raw coal is directly suspended, broken up and separated from the feed port by its own buoyancy in the heavy medium and the first-stage heavy medium solution jetting and sluicing device 111. The coal and slag that have settled to the bottom are scattered upward by the rotating dispersing plate arranged at the center of the bottom and sluiced by the second-stage heavy medium jetting and sluicing device 112, so that the residual carbon in the raw coal is suspended. The slag settles to the bottom of the tank body and is extracted by the slag extraction device. 3, the suspended residual carbon and coal are collected by the coal extraction device 2 set on the top; after testing, it was found that the coal content in the coal gangue was 1.86% lower than that of the heavy medium shallow tank separation equipment used on site, and the coal powder contained in the heavy medium solution was extracted by the continuous carbon powder extraction device 5. At the same time, the heavy medium solution in the heavy medium solution suspension coal separation tank 1 was continuously purified by the waste liquid purification / humus mud recovery device 6, and the heavy medium solution was adjusted and recovered by the heavy medium solution adjustment device 7 and the clean water storage and flushing device 8; after working continuously for 24 hours, the specific gravity of the nitrogen-based heavy medium solution was 1.485g / cm 3 , only increased by 0.005g / cm 3 The density of the heavy medium solution is relatively stable, and the raw coal medium consumption is 1.195 kg / ton, which is far lower than the 2.5 kg / t stipulated by the national standard; this shows that the utility model equipment can operate stably. At the same time, the utility model equipment recovers 2.9% of the raw coal feed humus mud, which can be used as humus fertilizer.
[0054] Example 3
[0055] Reference Fig. 9 The main difference between this embodiment and embodiment 1 is that the coal extraction device 2 of this embodiment adopts an improved filter bucket elevator, which can effectively reduce the moisture content of the coal after heavy medium coal separation.
Claims
1. A heavy medium solution suspension coal preparation equipment, characterized in that: It mainly comprises a heavy medium solution suspension coal separation tank, wherein the bottom center of the heavy medium solution suspension coal separation tank is provided with a rotating bulk material disk, a slag material discharge port is provided on the bottom side, a feed port is provided on the side wall of the tank body, a coal material outlet is provided on the top of the tank body, a first-stage heavy medium solution spraying and swaying device is provided below the feed port on the inner side wall of the tank, and a second-stage heavy medium solution spraying and swaying device is arranged in an annular manner outside the rotating bulk material disk at the bottom of the tank; when working, the heavy medium suspension coal separation tank contains coal with a density of 1.35-1.7 g / cm 3 The lump and granular coal or coal gangue falls into the heavy medium solution in the tank from the feed port on the side wall of the tank body, and the coal and slag are suspended and dispersed for the first time through the first-stage heavy medium jet and impaction arranged below the feed port in the tank. The lump and granular coal in the dispersed material is impacted and floated, and the lump and granular slag sinks to the rotating bulk material plate at the bottom center of the tank, and is scattered by the rotating bulk material plate and impacted by the second-stage heavy medium jet and impaction arranged in a ring to achieve the second suspension and dispersion separation of residual carbon and slag. The residual carbon particles in the slag are impacted and floated, and the slag scattered to the periphery of the tank is discharged through the slag discharge port on the side of the bottom. The lump and granular coal impacted, floated or suspended in the heavy medium solution in the tank is collected by the coal carbon extraction device on the upper part of the tank body.
2. A heavy medium solution suspension coal preparation equipment according to claim 1, characterized in that: The heavy medium solution suspension coal preparation equipment is also provided with a coal extraction device, a slag extraction device, and a heavy medium circulation injection device; The coal extraction device comprises a mechanism for extracting water-containing coal and a coal discharging mechanism; a coal drainage mechanism and a coal waste liquid collection mechanism are also provided; the feed end of the coal extraction device is connected to the coal outlet of the heavy medium solution suspension coal separation tank or is located in the heavy medium solution suspension coal separation tank; the coal is extracted and separated by the coal extraction mechanism or extracted and separated by the coal extraction mechanism and separated by drainage through the coal drainage mechanism, and the coal separation liquid enters the heavy medium solution suspension coal separation tank and / or the coal waste liquid collection mechanism, and the coal is collected by the coal discharging mechanism; the coal extraction device is one or more of a chain conveyor, a chain scraper, a centrifugal dehydrator, a scraper conveyor, a filter bucket elevator, and a roller scraper; the coal drainage mechanism is one of a vibrating screen, a fixed screen or a screen plate, a drum screen, a disc screen, a belt filter or a centrifugal dehydrator; the coal waste liquid collection mechanism comprises a waste liquid tank or a waste liquid bucket for waste liquid collection; the coal discharging mechanism is a chute or a belt conveyor or a screw conveyor; The slag extraction device comprises a water-containing slag lifting mechanism, a slag discharging mechanism, a slag drainage mechanism and a slag waste liquid collection mechanism, the feed port of the slag lifting mechanism is connected to the slag discharge port of the heavy medium solution suspension coal preparation tank; the slag is extracted and separated by the slag lifting mechanism or extracted and roughly separated by the slag extraction mechanism and then drained and separated by the slag drainage mechanism, the slag separation liquid is collected by the heavy medium solution suspension coal preparation tank and / or the slag waste liquid collection mechanism, and the slag is collected by the slag discharging mechanism; the slag lifting mechanism is one of a screw conveyor, a filter bucket elevator, a scraper conveyor, and a chain plate scraper; the slag drainage mechanism is one of a vibrating screen, a drum screen, a disc screen, a belt filter or a centrifugal dehydrator; the slag waste liquid collection mechanism comprises a waste liquid tank or a waste liquid bucket for waste liquid collection; the slag discharging mechanism is a chute or a belt conveyor or a screw conveyor or a coal bunker; The heavy medium circulation injection device includes at least one pump and a fluid particle enrichment and separation mechanism; the fluid particle enrichment and separation mechanism is provided with a fluid feed port, an enriched coarse particle fluid outlet and a fine particle fluid outlet; the fluid feed port of the heavy medium circulation injection device is connected to the upper part of the heavy medium solution suspension coal separation tank through a pipeline or a groove, or the fluid particle enrichment and separation mechanism is located in the heavy medium solution suspension coal separation tank, and the fine particle fluid outlet is connected to the first-stage heavy medium solution injection and swishing device and the second-stage heavy medium solution injection and swishing device of the heavy medium solution suspension coal separation tank through a pump, respectively; the enriched coarse particle fluid outlet is connected to the drainage mechanism or a separate drainage mechanism of the heavy medium solution suspension coal separation tank or the coal extraction device, so as to recover the enriched coarse carbon particles; the fluid particle enrichment and separation mechanism is a filter screen, a vibrating filter screen or a coarse separation grid.
3. A heavy medium solution suspension coal preparation equipment according to claim 1 or 2, characterized in that: The heavy medium solution suspended coal preparation equipment is also provided with a carbon powder extraction device; the carbon powder extraction device includes a distribution mechanism, a vibration drainage mechanism, a carbon powder waste liquid collection mechanism, and a carbon powder discharge mechanism. The distribution mechanism of the carbon powder extraction device is connected to the outlet of the coarse particle enrichment fluid of the heavy medium circulation injection device and the outlet of the waste liquid collection mechanism of the coal extraction device through a pipeline or a pump connected to the pipeline. The distribution mechanism of the carbon powder extraction device separates and extracts the carbon powder in the waste liquid through the vibration drainage mechanism, the extracted carbon powder is discharged by the carbon powder discharge mechanism, and the carbon powder waste liquid is collected by the carbon powder waste liquid collection mechanism of the carbon powder extraction device; the distribution mechanism of the carbon powder extraction device is also connected to the original liquid and waste liquid outlet of the waste liquid collection mechanism of the slag extraction device to recover the original liquid brought out of the slag extraction device.
4. A heavy medium solution suspension coal preparation equipment according to claim 1 or 2, characterized in that: The heavy medium solution suspension coal preparation equipment is also provided with a waste liquid purification / humus mud recovery device, which includes one or more waste liquid inlets, filter chambers, clean liquid outlets, and humus mud discharge mechanisms. The waste liquid inlet of the waste liquid purification / humus mud recovery device is connected to the outlets of the waste liquid collection mechanisms of the slag extraction device and the carbon powder extraction device through pipelines or pumps connected to the pipelines respectively; the clean liquid outlet of the waste liquid purification / humus mud recovery device is connected to the heavy medium suspension coal preparation tank through a pipeline or a pump connected to the pipeline for direct reuse, or is connected to the liquid inlet of the heavy medium solution replenishing device through a pipeline or a pump connected to the pipeline.
5. A heavy medium solution suspension coal separation equipment according to claim 1 or 2, characterized in that: The heavy medium solution suspension coal preparation equipment is also provided with a heavy medium solution replenishing device; the heavy medium solution replenishing device includes a heavy medium solution barrel, a feeding mechanism and a stirring mechanism, the heavy medium solution barrel is provided with a purification liquid inlet, a water inlet, a feeding port, a stirring port, and one or more liquid outlets, the purification liquid inlet is connected to the clean liquid outlet of the waste liquid purification / humus mud recovery device through a pipeline or a pump connected to the pipeline; the liquid outlet is connected to the tank body of the heavy medium solution suspension coal preparation tank or the heavy medium circulation injection device through a pump connected to the pipeline; the feeding port of the heavy medium solution barrel is connected to the feeding mechanism; the stirring mechanism of the heavy medium solution replenishing device stirs the heavy medium in the heavy medium solution barrel through the stirring port, and the water inlet is used to add clean water to prepare the liquid; The feeding mechanism of the heavy medium solution replenishing device adopts manual feeding through a feeding port or adopts a screw conveyor, a belt conveyor or a belt scale for feeding; The stirring mechanism adopts a circulating pump for circulating stirring, that is, the liquid outlet and the stirring port are respectively connected with the inlet and outlet of the circulating pump through pipelines.
6. A heavy medium solution suspension coal separation equipment according to claim 1 or 2, characterized in that: The heavy medium solution suspension coal preparation equipment is also provided with a clean water storage and flushing device, which includes a storage and delivery water tank, a clean water pump and one or more spray pipes or spray guns or spray gun groups; the storage and delivery water tank is provided with a water inlet and a water outlet; the spray pipes or spray guns or spray gun groups are respectively installed on the coal extraction device and / or the slag extraction device and / or the carbon powder extraction device, and are used to wash the coal and / or the slag and / or the carbon powder, and recover the heavy medium solution; the spray pipes or spray guns or spray gun groups spray washing water respectively from the coal extraction device and / or the slag extraction device and / or the carbon powder extraction device; The waste liquid collecting mechanism of the storage and delivery water tank and / or the slag extraction device and / or the carbon extraction device collects the waste liquid; the water inlet of the storage and delivery water tank is connected to the external water source, the water outlet is connected to the inlet of the clean water pump, and the outlet of the clean water pump is respectively connected to the water inlet of the heavy medium solution replenishing device, the nozzle or spray gun or spray gun group on the coal extraction device, the nozzle or spray gun or spray gun group on the slag extraction device, and the nozzle or spray gun or spray gun group on the carbon extraction device through pipelines or pipeline valves to adjust or recover the heavy medium solution; The heavy medium solution replenishing device is also provided with a temperature increasing mechanism, which is an electromagnetic induction coil arranged around the heavy medium solution barrel or an electric heater located inside the heavy medium solution barrel to increase the temperature and improve the solubility of the heavy medium.
7. A heavy medium solution suspension coal preparation equipment according to claim 1 or 2, characterized in that: The heavy medium solution jet-swing device is also provided with a pneumatic suspension device, which is connected to the pneumatic suspension port at the bottom or side of the heavy medium solution suspension coal preparation tank and is used to pneumatically suspend the heavy medium solution; the pneumatic suspension port is connected to the first-stage heavy medium solution jet-swing device and / or the inlet of the first-stage heavy medium solution jet-swing device.
8. A heavy medium solution suspension coal preparation equipment according to claim 1 or 2, characterized in that: A raw coal pretreatment device is also provided, the raw coal pretreatment device is connected to the feed port of the heavy medium solution suspension coal separation tank, and the pretreated raw coal or coal gangue is fed into the heavy medium solution suspension coal separation tank; the raw coal pretreatment device includes a screening mechanism and / or a selective crushing mechanism, the screening mechanism is connected to the inlet of the selective crushing mechanism, the coal gangue is crushed according to the particle size classification, and the materials on the screen and / or under the screen are selectively crushed or crushed to a particle size of ≤150mm; the screening mechanism is one or more of a vibrating screen, a drum screen, and a roller screen, and the selective crushing mechanism is a device for selectively crushing carbon particles, including an existing commonly used crusher or an intelligent ore dressing machine with machine vision for selectively crushing large carbon particles; The raw coal pretreatment device is also provided with a strong magnetic separation mechanism, which is used to sort and remove harmful substances from the slag before the raw coal enters the heavy medium solution suspension coal separation tank or after separation, so as to group and utilize the slag; the strong magnetic separation mechanism is arranged on the screening mechanism or conveyor belt in front of the feed port of the heavy medium solution suspension coal separation tank or on the filter screen or conveyor belt at the outlet of the slag extraction device.
9. The heavy medium solution suspension coal separation equipment according to claim 4, characterized in that: The waste liquid purification / humus mud recovery device is also provided with a waste liquid buffer tank for temporarily storing the waste liquid of the waste liquid collecting mechanism of the carbon powder extraction device; the liquid inlet of the waste liquid buffer tank is connected to the liquid outlet of the waste liquid collecting mechanism of the carbon powder extraction device and / or the liquid outlet of the waste liquid collecting mechanism of the slag extraction device through a pump or a pipeline connected to the pipeline, and the outlet of the waste liquid buffer tank is connected to the waste liquid inlet of the waste liquid purification / humus mud recovery device.
10. A heavy medium solution suspension coal preparation equipment according to claim 1 or 2, characterized in that: The heavy medium solution suspension coal preparation equipment is also provided with an electric control system and a bracket, wherein the electric control system is electrically connected to the heavy medium solution suspension coal preparation tank, the coal extraction device, the slag extraction device, the heavy medium circulation injection device and the carbon powder extraction device and / or the heavy medium solution replenishment device and / or the waste liquid purification / humus mud recovery device and / or the clean water storage and flushing device and / or the raw coal pretreatment device and / or the pneumatic suspension device; the heavy medium solution suspension coal preparation tank, the coal extraction device, the slag extraction device, the heavy medium circulation injection device and the carbon powder extraction device and / or the heavy medium solution replenishment device and / or the waste liquid purification / humus mud recovery device and / or the clean water storage and flushing device and / or the raw coal pretreatment device and / or the pneumatic suspension device are fixed or combinedly fixed on the bracket; The tank body of the heavy medium solution suspension coal separation tank is also provided with a wear-resistant lining plate, and the lining plate is one of a steel lining plate, a polyethylene lining plate, a high molecular polyethylene lining plate and a polyurethane lining plate.