CN203853144U - Secondary floatation system of slime water primarily separated by heavy medium cyclone for crushing and dissociating middlings - Google Patents
Secondary floatation system of slime water primarily separated by heavy medium cyclone for crushing and dissociating middlings Download PDFInfo
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- CN203853144U CN203853144U CN201420118712.9U CN201420118712U CN203853144U CN 203853144 U CN203853144 U CN 203853144U CN 201420118712 U CN201420118712 U CN 201420118712U CN 203853144 U CN203853144 U CN 203853144U
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- coal
- middle coal
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- medium cyclone
- sieve bend
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 3
- 239000003245 coal Substances 0.000 claims abstract description 140
- 238000005188 flotation Methods 0.000 claims abstract description 37
- 239000006148 magnetic separator Substances 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 239000002562 thickening agent Substances 0.000 claims abstract description 6
- 230000001404 mediated effect Effects 0.000 claims description 11
- 239000002893 slag Substances 0.000 claims description 8
- 239000010866 blackwater Substances 0.000 claims description 7
- 238000013467 fragmentation Methods 0.000 claims description 7
- 238000006062 fragmentation reaction Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 12
- 238000002360 preparation method Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 6
- 238000004939 coking Methods 0.000 description 3
- 208000005156 Dehydration Diseases 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Cyclones (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The utility model relates to a coal preparation system, in particular to a secondary floatation system of slime water primarily separated by a heavy medium cyclone for crushing and dissociating middlings for solving the problem that cleaned coal is mixed in coal in different degrees in the current coal preparation technique such as heavy medium separation. The secondary floatation system comprises the heavy medium cyclone, a middings medium drainage curved screen, a double-layer vibrating medium drainage screen, a middings crushing machine, a middings centrifugal machine, a middings magnetic separator, a middings magnetic tail barrel, a slurry pump, a vibrating curved screen, a high-frequency vibrating screen, a primary floatation machine, a secondary floatation machine, a thickener, a cleaned coal filter press and a tailing filter press. The system can reduce the ash content of the cleaned coal after flotation, can obtain a certain amount of cleaned coal products and can increase the economic benefit of the coal cleaning plants.
Description
Technical field
The utility model relates to a kind of Recognition Applied in Coal Preparation System, is specifically related to a kind of middle coal fragmentation dense medium cyclone main separation black water secondary flotation system of dissociating.
Background technology
Middle coal is the byproduct producing in coal preparation process, various coal preparation technique enriching and recovering cleaned coal and discharge spoil, the later intermediate products of tail coal, with respect to raw coal, mineral matter and sulfur content are all higher, and calorific value is lower, productive rate is generally 5%～30%, ash content is generally between 35%～45%, present stage major part as fuel for generating.Along with the standard of country to coal industry, substantially stopped the discarded phenomenon of middle coal, but the middle coal of Oversized Coking Coal Cleaning Plant is still used mainly as thermal coal, causes the waste of rare coking coal, improves clean coal recovery particularly important for this reason.The research of selecting again for middle coal, numerous domestic scholar and expert have done a large amount of tests, and test shows, can dissociate the cleaned coal of some after middle coal fragmentation, because intermediate density stage material before transformation fails fully to be dissociated, has also caused cleaned coal loss.At present, the recycling of middle coal is mainly reflected in two aspects: the middle coal based on the sorting of dissociating selects technique and the middle coal based on improving sharpness of separation to select technique more again.The middle coal of China Mining Univ. (Beijing) based on the sorting of dissociating selects process test research again, takes hydrophobic flocculation-floatation process from coking coal, to reclaim low ash extract coal; In jigging based on raising sharpness of separation, coal selects technique again, and Ru Taixi coal preparation plant jigging sharpness of separation is low, by pressurized feeding three products dual medium cyclone dressing technique centering coal, selects system to carry out technological transformation again, has improved clean coal yield; Huaibei Mining Group luling coal mine coal preparation plant selects technique again by coal in implementing, two sections of problems that saturating sieve amount is large, cleaned coal loss is higher while having solved the normal sorting of jigging machine.
Summary of the invention
The utility model is in order to solve current coal preparation technique as the problem of coal tong band cleaned coal in all existing in various degree in dense-medium separation, proposed a kind of middle coal fragmentation dense medium cyclone main separation black water secondary flotation system of dissociating.
The technical solution of the utility model is that the broken filter press size degradation of a kind of middle coal, from dense medium cyclone main separation black water secondary flotation system, comprises dense medium cyclone, middle coal de-mediated sieve bend, double-deck vibration sculping screen, middle coal disintegrating machine, middle coal centrifuge, middle coal magnetic separator, middle coal magnetic tail bucket, slag stock pump, vibration sieve bend, high frequency shale shaker, a flotation device, secondary flotation machine, thickener, clean coal pressur filter, tail coal filter press; Coal de-mediated sieve bend during described dense medium cyclone connects, middle coal de-mediated sieve bend downside connected double-layer sculping screen, double-deck sculping screen downside is respectively middle coal disintegrating machine, middle coal centrifuge, middle coal magnetic separator; Coal magnetic tail bucket during middle coal disintegrating machine, middle coal centrifuge, middle coal magnetic separator connect respectively, middle coal magnetic tail bucket connects vibration sieve bend by slag stock pump, vibration sieve bend connects high frequency shale shaker, high frequency shale shaker one end connects dense medium cyclone, the other end connects a flotation device, a flotation device connecting secondary flotation device, No. one time flotation device is connected with tail coal filter press jointly with secondary flotation machine, and secondary flotation machine is connected with clean coal pressur filter.
The beneficial effect of system described in the utility model is for carrying the phenomenon of cleaned coal in middle product of coal secretly, has adopted the high advantage of dense medium hydrocyclone number dose-effect, and the middle coal after fragmentation is adopted to dense medium cyclone main separation black water secondary flotation.Can reduce the feature of floatation clean coal ash content, can obtain the qualified head coal product of some, increase the economic benefit of coal preparation plant.
Accompanying drawing explanation
Fig. 1 structure chart of the present utility model
In figure: in coal de-mediated sieve bend in 1-dense medium cyclone, 2-, the double-deck vibration of 3-sculping screen, 4-, in coal disintegrating machine, 5-, coal centrifuge, 6-close in be situated between bucket, 7-coal magnetic separator in coal magnetic tail bucket, 8-slag stock pump, 9-vibration sieve bend, 10-high frequency shale shaker, 11-preprocessor, flotation device of 12-, 13-secondary flotation machine, 14-thickener, 15-Feeding Pump for Filter Press, 16-tail coal filter press, 17-clean coal pressur filter, 18-.
The specific embodiment
As shown in Fig. 1, the broken filter press size degradation of a kind of middle coal, from dense medium cyclone main separation black water secondary flotation system, comprises dense medium cyclone 1, middle coal de-mediated sieve bend 2, double-deck vibration sculping screen 3, middle coal disintegrating machine 4, middle coal centrifuge 5, middle coal magnetic separator 18, middle coal magnetic tail bucket 7, slag stock pump 8, vibration sieve bend 9,10, flotation devices 12 of high frequency shale shaker, secondary flotation machine 13, thickener 14, clean coal pressur filter 17, tail coal filter press 16; Coal de-mediated sieve bend 2 during described dense medium cyclone 1 connects, middle coal de-mediated sieve bend 2 downside connected double-layer sculping screens 3, double-deck sculping screen 3 downsides are respectively middle coal disintegrating machine 4, middle coal centrifuge 5, middle coal magnetic separator 18; Middle coal disintegrating machine 4, middle coal centrifuge 5, coal magnetic tail bucket 7 during middle coal magnetic separator 18 connects respectively, middle coal magnetic tail bucket 7 connects vibration sieve bend 9 by slag stock pump 8, vibration sieve bend 9 connects high frequency shale shaker 10, and high frequency shale shaker 10 one end connect dense medium cyclone, and the other end connects a flotation device, a flotation device connecting secondary flotation device, No. one time flotation device is connected with tail coal filter press 16 jointly with secondary flotation machine, and secondary flotation machine is connected with clean coal pressur filter 17.
Concrete technology flow process is: coal de-mediated sieve bend 2 during the middle coal that dense medium cyclone 1 obtains first passes through, and double-deck sculping screen 3 is processed, and a part (0.3mm) is by middle coal disintegrating machine 4 break process, and the middle coal after fragmentation is dissociated enters middle coal magnetic tail bucket 7; The middle coal of a part (0.5-3mm) is final middle product of coal after entering middle coal centrifuge 5 dehydrations, and a part enters middle coal magnetic separator 18; The screenings that middle coal disintegrating machine 4, middle coal centrifuge 5, middle coal magnetic separator 18 obtain enters middle coal magnetic tail bucket 7 jointly, with slag stock pump 8, get to vibration sieve bend 9 again, high frequency shale shaker 10 carries out graded desliming, oversize after desliming enters dense medium cyclone 1 main separation, screenings carries out secondary flotation to slime water system by flotation device 12 and secondary flotation machine 13, the cleaned coal of overflow is final head coal product through clean coal pressur filter 17 dehydrations, and tail coal enters tail coal thickener 16 for final coal slime product.
Described middle coal disintegrating machine 4 is hammer mill, is mainly used in the broken main middle coal of washing system (dense medium system), and middle coal is crushed to below 3mm.
Claims (1)
1. the coal fragmentation dense medium cyclone main separation black water secondary flotation system of dissociating in a kind, it is characterized in that: comprise dense medium cyclone (1), middle coal de-mediated sieve bend (2), double-deck vibration sculping screen (3), middle coal disintegrating machine (4), middle coal centrifuge (5), middle coal magnetic separator (18), middle coal magnetic tail bucket (7), slag stock pump (8), vibration sieve bend (9), high frequency shale shaker (10), a flotation device (12), secondary flotation machine (13), thickener (14), clean coal pressur filter (17), tail coal filter press (16); Coal de-mediated sieve bend (2) during described dense medium cyclone (1) connects, middle coal de-mediated sieve bend (2) downside connected double-layer sculping screen (3), double-deck sculping screen (3) downside is respectively middle coal disintegrating machine (4), middle coal centrifuge (5), middle coal magnetic separator (18); Middle coal disintegrating machine (4), middle coal centrifuge (5), coal magnetic tail bucket (7) during middle coal magnetic separator (18) connects respectively, middle coal magnetic tail bucket (7) connects vibration sieve bend (9) by slag stock pump (8), vibration sieve bend (9) connects high frequency shale shaker (10), high frequency shale shaker (10) one end connects dense medium cyclone, the other end connects a flotation device (12), a flotation device connecting secondary flotation device (13), No. one time flotation device is connected with tail coal filter press (16) jointly with secondary flotation machine, and secondary flotation machine is connected with clean coal pressur filter (17).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118712.9U CN203853144U (en) | 2014-03-17 | 2014-03-17 | Secondary floatation system of slime water primarily separated by heavy medium cyclone for crushing and dissociating middlings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118712.9U CN203853144U (en) | 2014-03-17 | 2014-03-17 | Secondary floatation system of slime water primarily separated by heavy medium cyclone for crushing and dissociating middlings |
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| CN203853144U true CN203853144U (en) | 2014-10-01 |
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| CN201420118712.9U Expired - Lifetime CN203853144U (en) | 2014-03-17 | 2014-03-17 | Secondary floatation system of slime water primarily separated by heavy medium cyclone for crushing and dissociating middlings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894277A (en) * | 2014-03-17 | 2014-07-02 | 李兴海 | Main coal separation sludge-water secondary flotation technology for middings crushing and dissociation dense medium cyclone |
| CN111635035A (en) * | 2020-06-09 | 2020-09-08 | 欧战备 | Coking coal tailing slurry treatment method and dosing device thereof |
-
2014
- 2014-03-17 CN CN201420118712.9U patent/CN203853144U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894277A (en) * | 2014-03-17 | 2014-07-02 | 李兴海 | Main coal separation sludge-water secondary flotation technology for middings crushing and dissociation dense medium cyclone |
| CN111635035A (en) * | 2020-06-09 | 2020-09-08 | 欧战备 | Coking coal tailing slurry treatment method and dosing device thereof |
| CN111635035B (en) * | 2020-06-09 | 2022-04-26 | 欧战备 | Coking coal tailing slurry treatment method and dosing device thereof |
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