CN2161376Y - A eduction gear for thickener underflow - Google Patents
A eduction gear for thickener underflow Download PDFInfo
- Publication number
- CN2161376Y CN2161376Y CN 93219335 CN93219335U CN2161376Y CN 2161376 Y CN2161376 Y CN 2161376Y CN 93219335 CN93219335 CN 93219335 CN 93219335 U CN93219335 U CN 93219335U CN 2161376 Y CN2161376 Y CN 2161376Y
- Authority
- CN
- China
- Prior art keywords
- underflow
- flotation
- equipment
- coal
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002562 thickening agent Substances 0.000 title claims description 19
- 238000005188 flotation Methods 0.000 claims abstract description 23
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 230000003750 conditioning effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 27
- 239000003245 coal Substances 0.000 abstract description 24
- 238000005406 washing Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000010790 dilution Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 239000010866 blackwater Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008719 thickening Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
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Abstract
The utility model relates to a discharging equipment for concentrated quick-witted underflow of coal preparation plant, in order to realize not adding the clear water and reduce the concentration of discharging of concentrated quick-witted underflow, thereby improve the purpose of flotation quality, the utility model discloses a to the underflow discharging equipment of the reasonable apolegamy of concentrated quick-witted underflow pipe diameter and underflow pump flow parameter and formation, make original flotation equipment washing water concentration very reduce, improved the separation effect, improved the washing quality, still can save a large amount of dilution clear water simultaneously, guaranteed that washing water closed cycle and the whole factory of coal slime are retrieved, avoided environmental pollution, the specially adapted is to the transformation of current concentrated flotation equipment.
Description
The utility model relates to a kind of in transforming coal preparation plant during thickening flotation, the tapping equipment of control thickener underflow concentration.
In whole coal preparation technique flow process, it is very important link that black water is handled.It comprises operations such as black water classification, the flotation of concentrating clarifying water and filtration, and its main task is to select cleaned coal, reclaim tail coal, purify wash water and prevent the pollution of the environment.And coal slime flotation utilizes specific device that flotation is connected with last continuous operation exactly.In the more general coal separation flow process of China, the black water that adopts thickener will go up continuous overflow concentrates more, and the underflow after will concentrating by the thickener underflow pump then drains into next procedure and continues flotation.Because this general thickening flotation equipment can only high concentration discharge underflow, promptly have only a part of coal slime to become the underflow concentrate and enter flotation, and a large amount of thin mud is taken away by overflow, circulation in whole system and integration time one are long, it is more and more to contain thin mud in the recirculated water, its concentration is also more and more higher, directly has influence on the separating effect of later jigging flotation.Black water is put outward and is difficult for also guaranteeing that wash water is closed circuit simultaneously, causes environmental pollution.And be to improve the flotation quality, reduce the underflow density of thickener and have to add a large amount of clear water; For reducing the effluent concentration of thickener, the flocculant of also having to add.
The purpose of this utility model is to provide a kind of tapping equipment that is used for thickener underflow, and this device need not increase under the condition of floatation equipment, realizes not adding clear water and falls the concentration of emission of end thickener underflow.
The purpose of this utility model realizes by following measure:
A kind of tapping equipment that is used for thickener underflow comprises the underflow pipe, underflow pump and the kaskad apparatus for pre-flotation pulp conditioning that directly link to each other with thickener.Satisfying the ratio of thickener feeding with the underflow discharge capacity is under the condition of 1:0.6～0.7, and the underflow caliber span of described tapping equipment is at 100～400mm, and the flow span of underflow pump is at 100～800m
3/ h.
The utility model has the advantages that:
1, owing to rationally chooses and increased the parameter of thickener underflow caliber and underflow pump discharge, the concentration of emission of thickener underflow is obviously reduced, simultaneously under the situation that need not add flocculant, also greatly reduce the effluent concentration of thickener, having stopped the circulation of thin mud in slime water system gathers, effect a radical cure the vicious circle of black water, realized the clear water coal washing.
2, owing to realized the clear water coal washing, thereby improve the separating effect of coal washing, flotation, improved the quality of washing product.
3, improved the separating effect of classifying equipoment effectively, held back granularity and attenuate, greatly reduced the slime content that enters flotation device, the cleaned coal content in the coal slime is effectively reclaimed.
4, owing to go into to float the reduction significantly of slime content, cause into washing ton flotation oil that raw coal consumed also to descend to some extent, fuel-economizing reaches 10%.
5, saved the Macrodilution clear water, realized the wash water closed cycle, thereby guaranteed to reclaim in wash water balance and the whole factories of coal slime.
6, wash water outflow and environmental pollution have been stopped.
Therefore, this device has simple, and the advantage of being convenient to promote to transforming existing thickening flotation equipment, reduces its wash water concentration, improves that to wash floating efficient be effective measures particularly, can obtain great economic benefit and social benefit.
Accompanying drawing 1 of the present utility model is the schematic diagram of this underflow tapping equipment.
Below in conjunction with accompanying drawing embodiment of the present utility model is described:
Because the raising year by year of mine capacity, coal preparation plant's disposal ability also increases year by year, thereby substantially exceeded designed capacity, make the circulating water in coal washing in the thickening flotation can not get purifying, excessive concentration, strengthened floating slime content, the production of flotation device, filter press is all had a strong impact on, electromechanical equipment can't reach original performance.Continue to keep the way of production, be forced to be interrupted row's coal slime exactly, to reduce wash water concentration.In order to change from passive to active, our imagination should reduce thin mud circulation as far as possible to be gathered, and reduces wash water concentration, adopts the big discharging direct flotation of thickener underflow method.Concrete measure is: changing the former 4PS underflow emptying pump under the thickener 1 into flow is 430m
3The LZB12 type transh pump 2 of/h, and the diameter of underflow pipe 3 is changed to φ 200mm by φ 150, can remove the clear water pipe on the kaskad apparatus for pre-flotation pulp conditioning 4 simultaneously, realized that thus the underflow concentration of emission from 43% of the past, drops to less than 8%; The underflow discharge capacity increases to nearly 400m
3, make nearly 2/3rds wash water obtain purification, its wash water concentration reduces to 1.2% suddenly by original 18%, has realized the clear water coal washing, has improved separating effect, and the floatation clean coal ash content reduces by 3%, because of the raising of quality of cleaned coal can increase by 4,140,000 yuan of incomes from sales the whole year; The sizing of equipment effect is greatly improved, and it is nearly 1/3rd to go into to float the more preceding minimizing of slime content, and the cleaned coal content in the coal slime is effectively reclaimed, and clean coal yield increases by 1.36%, annual 101.59 ten thousand yuan of the incomes from sales that increase; Flotation tailing is realized reclaiming in whole factories simultaneously, and wash water has reached closed cycle, and produce and obtained initiative, the utility model small investment, instant effect, simple, be to reduce wash water concentration, improve the favourable measure of washing floating efficient.
Claims (1)
1, a kind of tapping equipment that is used for thickener underflow, comprise the underflow pipe, underflow pump and the kaskad apparatus for pre-flotation pulp conditioning that directly link to each other with thickener, it is characterized in that, satisfying the ratio of thickener feeding with the underflow discharge capacity is under 1: 0.6～0.7 the condition, the underflow caliber span of described tapping equipment is at 100～400mm, and the flow span of underflow pump is at 100～800m
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219335 CN2161376Y (en) | 1993-07-24 | 1993-07-24 | A eduction gear for thickener underflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219335 CN2161376Y (en) | 1993-07-24 | 1993-07-24 | A eduction gear for thickener underflow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2161376Y true CN2161376Y (en) | 1994-04-13 |
Family
ID=33798744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93219335 Expired - Fee Related CN2161376Y (en) | 1993-07-24 | 1993-07-24 | A eduction gear for thickener underflow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2161376Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865358A (en) * | 2010-06-25 | 2010-10-20 | 云南大红山管道有限公司 | Complex-terrain long-distance iron ore concentrate conveying pipeline multi-level demagnetizing system |
| CN103071579A (en) * | 2013-02-28 | 2013-05-01 | 唐山森普工程设计有限公司 | Concentration, medication and pretreatment process for flotation coal slurry |
| CN104624393A (en) * | 2013-11-08 | 2015-05-20 | 中冶长天国际工程有限责任公司 | Multi-layer de-sliming thickener |
| CN104922947A (en) * | 2015-05-25 | 2015-09-23 | 云南驰宏锌锗股份有限公司 | Novel underflow anti-clogging discharge method and device for thickener |
-
1993
- 1993-07-24 CN CN 93219335 patent/CN2161376Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865358A (en) * | 2010-06-25 | 2010-10-20 | 云南大红山管道有限公司 | Complex-terrain long-distance iron ore concentrate conveying pipeline multi-level demagnetizing system |
| CN103071579A (en) * | 2013-02-28 | 2013-05-01 | 唐山森普工程设计有限公司 | Concentration, medication and pretreatment process for flotation coal slurry |
| CN104624393A (en) * | 2013-11-08 | 2015-05-20 | 中冶长天国际工程有限责任公司 | Multi-layer de-sliming thickener |
| CN104922947A (en) * | 2015-05-25 | 2015-09-23 | 云南驰宏锌锗股份有限公司 | Novel underflow anti-clogging discharge method and device for thickener |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |