CN101804382A - Sorting and grading device of pulsating liquid-solid fluidized bed and method thereof - Google Patents
Sorting and grading device of pulsating liquid-solid fluidized bed and method thereof Download PDFInfo
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- CN101804382A CN101804382A CN 201010116635 CN201010116635A CN101804382A CN 101804382 A CN101804382 A CN 101804382A CN 201010116635 CN201010116635 CN 201010116635 CN 201010116635 A CN201010116635 A CN 201010116635A CN 101804382 A CN101804382 A CN 101804382A
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- 239000007787 solid Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000007599 discharging Methods 0.000 claims abstract description 30
- 230000001174 ascending effect Effects 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000005243 fluidization Methods 0.000 claims abstract description 9
- 230000010349 pulsation Effects 0.000 claims description 36
- 230000000694 effects Effects 0.000 claims description 20
- 238000000926 separation method Methods 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 8
- 238000004062 sedimentation Methods 0.000 claims description 7
- 239000010419 fine particle Substances 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 230000002572 peristaltic effect Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011177 media preparation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The invention provides a sorting and grading device of a pulsating liquid-solid fluidized bed and a method thereof. The sorting and grading device comprises a light product overflow trough, a central feed pipe, a sorting tank, a pulsating liquid distributor, a pulsating current generator, a heavy product collecting base-cone section, a sensor for measuring the concentration of the heavy product layer, a programmable controller, a heavy product discharging fluidized chamber and an underflow discharging automatic control actuator. The method comprises the following steps: firstly, water is thrown into a sorting machine in a pulsating way by the pulsating current generator, to form an upward varying-accelerated pulsating-type ascending current; accordingly, low-density or fine-fraction materials can be subjected to upward accelerated movement under the action of the accelerated pulsating-type ascending current, thus achieving the overflow discharge of the low-density or fine-fraction materials as the light or fine-fraction products; and high-density or coarse-fraction materials can be settled downwards in the fluidized bed, thus achieving the discharge of the high-density or coarse-fraction materials as the heavy or coarse-fraction products. Accordingly, the process for sorting materials by density on the basis of pulsating fluidization or the process for grading materials by fraction on the basis of pulsating fluidization can be achieved. The device and method of the invention have the advantages of simple operation, low energy consumption, low sorting lower limit, wide fraction range, high sorting accuracy and high reliability.
Description
Technical field
The present invention relates to a kind of pulsation liquid-solid fluid bed separation classification device and method, be particularly useful for the sorting and the classification of solid waste such as coal slime, slag from gasifying furnace and other fine fraction mineral.
Background technology
In fine fraction sorting mineral classification field, mainly contain cyclone, spiral, shaking table, hindered bed separator equipment and methods such as (being TBS), cyclone comes with some shortcomings but minor diameter heavily is situated between: too thin to the medium granularity requirements, medium preparation and recovery difficulty, and cost height, pan feeding is required the pressure height, and equipment attrition is serious, and power consumption is big.The deficiency of spiral: the separating density height, cleans ash is higher, and the separate unit treating capacity is little, highly big, to the strictness of pan feeding concentration requirement, is difficult to control on the industrial production.Tradition requires the particle size range of pan feeding narrower when disturbing the bed sorting technology to be used for separation of coarse slime, when material size wider range, granularity shows fairly obviously to the adverse effect of sorting, low-density rough grain is easy to enter into highdensity underflow, though can strengthen the recovery of the rough grain of low-density by the method that improves ascending current speed, but high ascending current speed can cause the high density fine grained to enter into overflow launder again, cause the efficiency of separation to reduce, the underflow floss hole stops up especially easily simultaneously.
Summary of the invention
Technical problem: it is simple to the purpose of this invention is to provide a kind of method and structure, and energy consumption is low, and disposal ability is big, sharpness of separation height, the pulsation liquid-solid fluid bed separation classification device and the method for the fine particle stage material sorting classifying that reliability is high.
Technical scheme: pulsation liquid-solid fluid bed separation classification device of the present invention, comprise that having heavy product collects the sorting staving of base cone section, be located at light product overflow launder, fluctuating flow distributor, sensor on the sorting staving, programmable controller that is connected with the sensor order and underflow discharging be the control actuator automatically, described sorting staving upper end is provided with the center feed pipe, and the porch of fluctuating flow distributor is connected with the fluctuating flow generator; Described heavy product collection base cone section exit is provided with heavy product and discharges fluidising chamber, indoor water distributing plate and the feed pipe that is provided with crack with holes of heavy product discharging fluidisation, the top of water distributing plate is provided with the heavy product delivery pipe of the heavy product of extraction, and underflow discharging control actuator automatically is located on the heavy product delivery pipe.Described fluctuating flow distributor comprises the person in charge, and with many arms being responsible for the sorting staving that is connected and passes, many arms in the sorting staving that penetrates are provided with the standpipe that a plurality of apertures make progress, and the top of each standpipe is equipped with permeable web plate; Described fluctuating flow generator is membrane pump, peristaltic pump or rotary valve.
Pulsation liquid-solid fluid bed separation stage division of the present invention, concrete steps are as follows:
A, at first the mode of water with pulsation is driven in the sorting staving by the current distributor, forms change upwards and quicken the pulsation ascending current by the fluctuating flow generator;
B, to be fed in the sorting staving by the center feed pipe by the material of sorting or classification then, become under the fluidized-bed layer effect of quickening the formation of pulsation ascending current by the material of sorting or classification, case of low density loads or fine particle stage material are subjected to pulsing and quicken additional thrust and dynamic pressure effect that ascending current produces and surpass gravity, the acting in conjunction of the mechanical resistance of collision friction between additional inertia resistance of medium and particle, be upward through bed, brought into light product overflow launder by ascending current, discharge through light product outlet, and the suffered gravity effect of high density material or coarse fraction material surpasses the additional thrust that the ascending current generation is quickened in pulsation, resistance of medium, the mechanical resistance effect of collision friction between additional inertia resistance of medium and particle, still sedimentation is downwards passed the fluctuating flow distributor and is entered heavy product collection base cone section;
C. be arranged on the heavy production concentration of sensor measurement of sorting staving bottom, and will pass to programmable controller after the signal conversion, after handling concentration signal, programmable controller passes to underflow discharging control actuator automatically, by underflow discharging automatically the control of control actuator will weigh product and discharge from heavy product delivery pipe, realize to material by density pulsation fluidization sorting or by grade pulsation fluidized classifying;
D. discharge the indoor feeding current of fluidisation to heavy product, by the water distributing plate in crack with holes, the heavy product that sedimentation has been concentrated forms fluidized state on the current direction, prevents the obstruction of coarse fraction product deposition, is beneficial to the automatic discharging of heavy product delivery pipe.
Beneficial effect: the present invention quickens the pulsation ascending current by introducing to become, when being entered in the separator through the center feed pipe by sorting or branch stage material, run into when becoming the fluidized-bed layer that quickens the formation of pulsation ascending current, case of low density loads or fine particle stage material are subjected to pulsing and quicken additional thrust and dynamic pressure effect that ascending current produces and surpass gravity, the acting in conjunction of the mechanical resistance of collision friction between additional inertia resistance of medium and particle, quicken the rising stage at fluctuating flow, accelerated motion upwards will be obtained, under a plurality of pulsation period effects, be upward through bed, brought into overflow by ascending current, discharge as light product or fine fraction product, and the suffered gravity effect of high density material or coarse fraction material surpasses the additional thrust that the ascending current generation is quickened in pulsation, resistance of medium, the mechanical resistance effect of collision friction between additional inertia resistance of medium and particle, still sedimentation downwards, pass the fluctuating flow distributor and enter underflow, discharge as weighing product or coarse fraction product, realize pressing density pulsation fluidization sorting or pressing grade pulsation fluidized classifying material.The suction effect of sewing that become to quicken dispersion, eduction and the deceleration period of pulsation ascending current has been strengthened fine particle stage material by density separation or by the effect of grade classification.By being set, heavy product discharges fluidising chamber, to the indoor feeding current of heavy product discharging fluidisation, by the water distributing plate in crack with holes, the heavy product that sedimentation has been concentrated forms fluidized state on the current direction, prevent the obstruction of coarse fraction product deposition, be beneficial to the automatic discharging of heavy product delivery pipe.Be applicable to the sorting and the classification of solid waste such as coal slime, slag from gasifying furnace and other fine fraction mineral.In whole sorting classifying process, can regulate partition density neatly and control product quality and productive rate by regulating flow or the ripple frequency or the amplitude of pulsing gluid.It is simple in structure, and production technology is simple, and lower limit of separation is low, and it is wide to handle particle size range, and disposal ability is big, the sharpness of separation height, and the reliability height has practicality widely.
Description of drawings
Fig. 1 is the pulse structural representation of liquid-solid fluid bed separation classification device of the present invention;
Fig. 2 is a kind of structural representation of fluctuating flow distributor of the present invention;
Fig. 3 is the another kind of structural representation of fluctuating flow distributor of the present invention;
Fig. 4 is a fluctuating flow distributor partial structurtes schematic diagram of the present invention.
Among the figure: the light product overflow launder of 1-, 2-center feed pipe, 3-sorting staving, 4-fluctuating flow distributor, 5-is heavy, and product is collected base cone section, 6-sensor, the 7-programmable controller, the discharging of 8-underflow is the control actuator automatically, the heavy product delivery pipe of 9-, the heavy product discharging of 10-fluidising chamber, 11-water distributing plate, 12-feed pipe, the light product outlet of 13-, 14-fluctuating flow generator, 4-1, fluctuating flow distributor are responsible for, 4-2, fluctuating flow distributor branch pipes, 4-3, permeable web plate.
The specific embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are further described:
As shown in Figure 1, pulsation liquid-solid fluid bed separation classification device of the present invention is mainly collected base cone section 5, heavy product delivery pipe 9, heavy product discharging fluidising chamber 10, sensor 6, programmable controller 7 and the automatic control of underflow discharging actuator 8 by center feed pipe 2, sorting staving 3, fluctuating flow distributor 4, fluctuating flow generator 14, light product overflow launder 1, heavy product and is constituted.The cross section that sorting staving 3 and heavy product are collected base cone section 5 is circle or rectangle, heavy product is collected the lower end that base cone section 5 is located at sorting staving 3, light product overflow launder 1 is located at sorting staving 3 straight section tops, light product overflow launder 1 has the tilting bottom, be provided with light product outlet 13 at the tilting bottom lowest part, center feed pipe 2 is located at the straight section upper end of sorting staving 3, and fluctuating flow distributor 4 is located at the straight section bottom of sorting staving 3.Fluctuating flow distributor 4 comprises is responsible for 4-1, and is responsible for that 4-1 is connected and many arm 4-2 of the sorting staving 3 that passes, and the sorting staving 3 many interior arm 4-2 that penetrate are provided with the standpipe that a plurality of apertures make progress, and the top of each standpipe is equipped with permeable web plate 4-3.The porch of fluctuating flow distributor 4 connects fluctuating flow generator 14, and fluctuating flow distributor 4 produces fluctuating flow under the effect of fluctuating flow generator 14, and fluctuating flow generator 14 adopts membrane pump, peristaltic pump or rotary valve.Heavy product delivery pipe 9 bottoms are provided with heavy product and discharge fluidising chamber 10, be connected with base cone section 5 lower ends by flange, heavy product discharges water distributing plate 11 and the feed pipe 12 that is provided with crack with holes in the fluidising chamber 10, heavy product delivery pipe 9 is located at the top of water distributing plate 11, and underflow discharging control actuator 8 automatically is located on the heavy product delivery pipe 9.Sensor 6 is located at the straight section bottom of sorting staving 3, sensor 6 be linked in sequence the discharging of programmable controller 7 and underflow automatically control actuator 8 form underflows discharging automatic control systems, by the automatic discharging of the heavy product delivery pipe 9 of underflow discharging automatic controlling system.
Pulsation liquid-solid fluid bed separation stage division of the present invention: at first the mode of water with pulsation is driven in the sorting staving 3 by fluctuating flow distributor 4 by fluctuating flow generator 14, form change upwards and quicken the pulsation ascending current, fed in the sorting staving 3 by center feed pipe 2 by the material of sorting or classification, run into when becoming the fluidized-bed layer that quickens the formation of pulsation ascending current, case of low density loads or fine particle stage material are subjected to pulsing and quicken additional thrust and dynamic pressure effect that ascending current produces and surpass gravity, the acting in conjunction of the mechanical resistance of collision friction between additional inertia resistance of medium and particle, quicken the rising stage at fluctuating flow, accelerated motion upwards will be obtained, under a plurality of pulsation period effects, be upward through bed, brought into overflow by ascending current, collect by light product overflow launder 1 as light product or fine fraction product with tilting bottom, discharge through light product outlet 13, and the suffered gravity effect of high density material or coarse fraction material surpasses the additional thrust that the ascending current generation is quickened in pulsation, resistance of medium, the mechanical resistance effect of collision friction between additional inertia resistance of medium and particle, still sedimentation downwards, passing fluctuating flow distributor 4 enters heavy product collection base cone section 5 and is condensed into attach most importance to product or coarse fraction product, via the discharging of heavy product delivery pipe 9 and underflow automatically control actuator 8 discharge, thereby realize to material by density pulsation fluidization sorting or by grade pulsation fluidized classifying.Measure heavy production concentration and will pass to programmable controller 7 after the signal conversion by the sensor 6 that is arranged on sorting staving 3 bottoms, remove to control underflow discharging control actuator 8 automatically through 7 pairs of concentration signals processing of programmable controller, realize the automatic discharging of counterweight product.Discharge the water of the water distributing plate 11 in crack with holes in the fluidising chamber 10 by heavy product and form a kind of fluidized state, prevent the obstruction of heavy product deposition, be beneficial to automatic discharging with the heavy product that concentrates.
Claims (4)
- One kind the pulsation liquid-solid fluid bed separation classification device, comprise that having heavy product collects the sorting staving (3) of base cone section (5), be located at the light product overflow launder (1) on the sorting staving (3), fluctuating flow distributor (4), sensor (6), programmable controller (7) that is connected with the sensor order and underflow discharging be control actuator (8) automatically, it is characterized in that: described sorting staving (3) upper end is provided with center feed pipe (2), and the porch of fluctuating flow distributor (4) is connected with fluctuating flow generator (14); Described heavy product collection base cone section (5) exit is provided with heavy product and discharges fluidising chamber (10), be provided with the water distributing plate (11) and the feed pipe (12) in crack with holes in the heavy product discharging fluidising chamber (10), the top of water distributing plate (11) is provided with the heavy product delivery pipe (9) of the heavy product of extraction, and underflow discharging control actuator (8) automatically is located on the heavy product delivery pipe (9).
- 2. pulsation liquid-solid fluid bed separation equipment according to claim 1, it is characterized in that: described fluctuating flow distributor (4) comprises the person in charge (4-1), with be responsible for (4-1) and be connected and the many arms (4-2) of the sorting staving (3) that passes, many arms (4-2) in the sorting staving (3) that penetrates are provided with the standpipe that a plurality of apertures make progress, and the top of each standpipe is equipped with permeable web plate (4-3).
- 3. pulsation liquid-solid fluid bed separation equipment according to claim 1 is characterized in that: described fluctuating flow generator (14) is membrane pump, peristaltic pump or rotary valve.
- 4. pulsation liquid-solid fluid bed separation stage division, it is characterized in that: concrete steps are as follows:A, at first the mode of water with pulsation is driven in the sorting staving (3) by fluctuating flow distributor (4), forms change upwards and quicken the ascending current of pulsing by fluctuating flow generator (14);B, to be fed in the sorting staving (3) by center feed pipe (2) by the material of sorting or classification then, become under the fluidized-bed layer effect of quickening the formation of pulsation ascending current by the material of sorting or classification, case of low density loads or fine particle stage material are subjected to pulsing and quicken additional thrust and dynamic pressure effect that ascending current produces and surpass gravity, the acting in conjunction of the mechanical resistance of collision friction between additional inertia resistance of medium and particle, be upward through bed, brought into light product overflow launder (1) by ascending current, discharge through light product outlet (13), and the suffered gravity effect of high density material or coarse fraction material surpasses the additional thrust that the ascending current generation is quickened in pulsation, resistance of medium, the mechanical resistance effect of collision friction between additional inertia resistance of medium and particle, still sedimentation is downwards passed fluctuating flow distributor (4) and is entered heavy product collection base cone section (5);C. the sensor (6) that is arranged on sorting staving (3) bottom is measured heavy production concentration, and will pass to programmable controller (7) after the signal conversion, after handling concentration signal, programmable controller (7) passes to underflow discharging control actuator (8) automatically, by underflow discharging automatically control actuator (8) control will weigh product and discharge from heavy product delivery pipe (9), realize to material by density pulsation fluidization sorting or by grade pulsation fluidized classifying;D. in heavy product discharging fluidising chamber (10), feed current, pass through the water distributing plate (11) in crack with holes on the current direction, the heavy product that sedimentation has been concentrated forms fluidized state, prevents the obstruction of coarse fraction product deposition, is beneficial to the automatic discharging of heavy product by heavy product delivery pipe (9).
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| CN 201010116635 CN101804382B (en) | 2010-03-03 | 2010-03-03 | Sorting and grading device of pulsating liquid-solid fluidized bed and method thereof |
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| CN 201010116635 CN101804382B (en) | 2010-03-03 | 2010-03-03 | Sorting and grading device of pulsating liquid-solid fluidized bed and method thereof |
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| CN101804382A true CN101804382A (en) | 2010-08-18 |
| CN101804382B CN101804382B (en) | 2013-01-02 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205263A (en) * | 2011-05-24 | 2011-10-05 | 中国矿业大学 | Coal slime classified concentration device |
| CN105944822A (en) * | 2016-05-31 | 2016-09-21 | 浙江凯色丽科技发展有限公司 | Continuous mica sedimentation classification system |
| CN106927650A (en) * | 2017-04-19 | 2017-07-07 | 上海坚儒环保工程有限公司 | A kind of portable pipe duct dredged sediment processing system |
| CN109604042A (en) * | 2018-12-29 | 2019-04-12 | 天地（唐山）矿业科技有限公司 | A kind of energy saving shallow slot heavy-media separator of width grade pulsation |
| CN110848097A (en) * | 2019-11-19 | 2020-02-28 | 中国科学院电工研究所 | Air-water-sand energy storage power station |
| CN111632743A (en) * | 2020-06-10 | 2020-09-08 | 河南理工大学 | Coal ash hollow microsphere pulsating liquid-solid fluidization sorting and recycling device and method |
| CN111921461A (en) * | 2020-07-06 | 2020-11-13 | 安徽凤砂矿业集团有限公司 | Fluidized bed |
| CN112221692A (en) * | 2020-10-13 | 2021-01-15 | 中煤科工集团唐山研究院有限公司 | Low-grade fine-grained embedded mineral enrichment and separation device |
| CN113182068A (en) * | 2021-03-30 | 2021-07-30 | 中南大学 | Magnetic pulsation counter-current sorting device |
| CN113318871A (en) * | 2021-05-20 | 2021-08-31 | 内蒙古万邦清源环保科技有限公司 | Method for preparing carbon superfine powder material from coal chemical industry byproduct gasified slag |
| CN114700182A (en) * | 2021-07-22 | 2022-07-05 | 中国矿业大学 | Coarse particle fluidized flotation device and method for gradient air intake |
| CN114700181A (en) * | 2021-07-22 | 2022-07-05 | 中国矿业大学 | Flotation device and method suitable for coarse slime separation |
| CN114713379A (en) * | 2021-07-22 | 2022-07-08 | 中国矿业大学 | Fluidized flotation device and method suitable for coarse particle recovery |
| CN115501974A (en) * | 2022-09-20 | 2022-12-23 | 中煤科工集团唐山研究院有限公司 | Grading separator with autogenous medium interference bed layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205263A (en) * | 2011-05-24 | 2011-10-05 | 中国矿业大学 | Coal slime classified concentration device |
| CN105944822A (en) * | 2016-05-31 | 2016-09-21 | 浙江凯色丽科技发展有限公司 | Continuous mica sedimentation classification system |
| CN106927650A (en) * | 2017-04-19 | 2017-07-07 | 上海坚儒环保工程有限公司 | A kind of portable pipe duct dredged sediment processing system |
| CN106927650B (en) * | 2017-04-19 | 2020-07-17 | 上海坚儒环保工程有限公司 | Portable canal desilting sludge treatment system |
| CN109604042B (en) * | 2018-12-29 | 2021-03-09 | 天地（唐山）矿业科技有限公司 | Wide-size-fraction pulsating shallow-groove heavy-medium separator |
| CN109604042A (en) * | 2018-12-29 | 2019-04-12 | 天地（唐山）矿业科技有限公司 | A kind of energy saving shallow slot heavy-media separator of width grade pulsation |
| CN110848097A (en) * | 2019-11-19 | 2020-02-28 | 中国科学院电工研究所 | Air-water-sand energy storage power station |
| CN110848097B (en) * | 2019-11-19 | 2021-02-26 | 中国科学院电工研究所 | Air-water-sand energy storage power station |
| CN111632743A (en) * | 2020-06-10 | 2020-09-08 | 河南理工大学 | Coal ash hollow microsphere pulsating liquid-solid fluidization sorting and recycling device and method |
| CN111921461A (en) * | 2020-07-06 | 2020-11-13 | 安徽凤砂矿业集团有限公司 | Fluidized bed |
| CN112221692A (en) * | 2020-10-13 | 2021-01-15 | 中煤科工集团唐山研究院有限公司 | Low-grade fine-grained embedded mineral enrichment and separation device |
| CN113182068A (en) * | 2021-03-30 | 2021-07-30 | 中南大学 | Magnetic pulsation counter-current sorting device |
| CN113318871A (en) * | 2021-05-20 | 2021-08-31 | 内蒙古万邦清源环保科技有限公司 | Method for preparing carbon superfine powder material from coal chemical industry byproduct gasified slag |
| CN114700182A (en) * | 2021-07-22 | 2022-07-05 | 中国矿业大学 | Coarse particle fluidized flotation device and method for gradient air intake |
| CN114700181A (en) * | 2021-07-22 | 2022-07-05 | 中国矿业大学 | Flotation device and method suitable for coarse slime separation |
| CN114713379A (en) * | 2021-07-22 | 2022-07-08 | 中国矿业大学 | Fluidized flotation device and method suitable for coarse particle recovery |
| CN114700182B (en) * | 2021-07-22 | 2023-07-14 | 中国矿业大学 | Coarse particle fluidization flotation device and method with gradient air intake |
| CN114713379B (en) * | 2021-07-22 | 2023-09-29 | 中国矿业大学 | Fluidized flotation device and method suitable for coarse particle recovery |
| CN115501974A (en) * | 2022-09-20 | 2022-12-23 | 中煤科工集团唐山研究院有限公司 | Grading separator with autogenous medium interference bed layer |
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