CN103252286B - Method for using dense medium to sort coal-series kaolinite rocks in gangues - Google Patents
Method for using dense medium to sort coal-series kaolinite rocks in gangues Download PDFInfo
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- CN103252286B CN103252286B CN201310093663.8A CN201310093663A CN103252286B CN 103252286 B CN103252286 B CN 103252286B CN 201310093663 A CN201310093663 A CN 201310093663A CN 103252286 B CN103252286 B CN 103252286B
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Abstract
The invention provides a method for using dense medium to sort coal-series kaolinite rocks in gangues and belongs to the technical field of sorting coal-series kaolinite rocks in gangues. The method includes: selecting gangues of 2.2kg/1-2.5kg/1 density class in kaolinite rocks of +13mm fraction; feeding raw ore into a 13mm classifying screen after the same enters a main workshop, feeding 100*13mm gangue blocks on the screen into a dense-medium drum-type sorting machine for sorting, and conveying 13*0mm gangue ends below the screen to a waste bin through a belt; and feeding 100*13mm gangue blocks into a primary-sorting-section dense-medium drum-type sorting machine for sorting to obtain heavy discharged objects, light discharged objects and kaolinite rocks; wherein dense medium density of a low-density chamber of the dense-medium drum-type sorting machine is 2.2kg/1, and dense medium density of a high-density chamber of the dense-medium drum-type sorting machine is 2.2kg/1. By the method, gangue processing is achieved, and the indexes of the coal-series kaolinite rocks are: iron content is not more than 0.5%, whiteness is not less than 85%, and ignition loss is not more than 18%.
Description
Technical field
The present invention relates to a kind of method utilizing coal series kaolin rock in dense medium separation gangue, belong to the method and technology field of coal series kaolin rock in sorting gangue.
Background technology
In recent years along with the raising of coal production, the process problem of gangue is more and more outstanding, and on ground, the gangue of bulk deposition brings very large pressure to environmental protection.And current sorting coal series kaolin rock or a technical barrier in the world.
Summary of the invention
The object of the invention is to solve prior art Problems existing, namely the process problem of gangue is more and more outstanding, and on ground, the gangue of bulk deposition brings very large pressure to environmental protection.And then a kind of method utilizing coal series kaolin rock in dense medium separation gangue is provided.
The object of the invention is to be achieved through the following technical solutions:
Utilize a method for coal series kaolin rock in dense medium separation gangue, step is as follows:
One, the selection of gangue: the gangue selecting 2.2kg/l ~ 2.5kg/l density level in Raolinite+13mm grade;
Two, ore dressing:
(1) raw ore system
External raw ore is stored to raw ore ore stockyard by automobile supplied materials, by reprinting belt, tcrude ore is transported to crushing plant;
Crushing raw ore through a 100mm through type disintegrating machine, is entered main building washing for-100mm product is dispensed to two trestles through reprinting scraper plate at crushing plant by raw ore;
After raw ore enters main building, first enter 13mm classifying screen, sieve upper 13 ~ 100mm block cash and enter the sorting of dense medium drum-type separator, sieve lower 0 ~ 13mm end cash is transported to waste bin by belt;
(2) washing system
(1) dense medium drum-type machine separation system
13 ~ 100mm block cash enters just selections dense medium drum-type separator sorting; The liquid-tight degree of dense media of dense medium drum-type separator low-density room is 2.2kg/l, the liquid-tight degree of dense media of high density room is 2.5kg/l, separate rearrangement product, light row's thing and Raolinite three kinds of products, light row's thing and rearrangement product are transported to waste bin by belt and store after sculping screen de-mediated, and the first ore deposit of Raolinite enters product storage and deposits;
(2) medium system
The Raolinite specific gravity of separation, between 2.2 ~ 2.5kg/l, belongs to high specific gravity sorting, and adopt ferrosilicon powder as the medium of formulated suspension, sculping screen all adopts three sections of de-mediated;
In first selections, light row's thing sculping screen one section of qualified medium returns drum-type separator low-density section as circulation fluid by pump, and rearrangement product and Raolinite just ore deposit sculping screen one section of qualified medium return drum-type separator high density fractions as circulation fluid by pump; All sculping screens two sections of rare Jie enter a stages of magnetic separation machine and reclaim, and a stages of magnetic separation mine tailing enters two stages of magnetic separation machines and reclaims, and two sections of washing mine tailings enter slime water system, return and close Jie's bucket after one section of two stages of magnetic separation concentrate enters the process of medium densifier; Sculping screen the 3rd section of rare Jie uses as sculping screen water spray;
Shunting is realized by two parts, Part I be low-density section enter drum-type separator conjunction Jie pipeline on establish shunting, branch in rare Jie's bucket; Part II be high density fractions enter drum-type separator conjunction Jie pipeline on establish shunting, branch to low-density Duan Hejie bucket;
Low-density section and high density fractions medium system are equipped with densitometer, and can regulate separately two sections of separating densities, automatic controlled water replanishing valve all established by each bucket, can realize the automatic control of the stable of the liquid level of bucket and density;
(3) concentrated press filteration system
Two sections of washing mine tailings enter classifying cyclone process, classifying cyclone overflow, and filter press filtrate enters concentration basin, after concentrated, underflow is beaten to filter press agitator by pump, then feeds filter press dehydration recovery through pan feeding pump, and after dehydration, sludge is transported to mine tailing stacking field by belt;
The overflow of concentration basin is multiplexing as primary water retrieval system;
(3) product systems
Product adopts and lands form automobile and transport outward;
Light row's thing, rearrangement product, 0 ~ 13mm end cash is transported to waste bin accumulating by belt conveyor gallery; Raolinite product at different levels, is transported to product through belt conveyor gallery and stacks field.
Coal series kaolin rock is mainly as the raw material producing calcined kaolin, and calcined kaolin is mainly used in the fields such as high-grade ceramic, coating, papermaking, cosmetics, in recent years along with China's economy and industrial high speed development, increasing to the demand of kaolin product.The invention solves the process problem of gangue, and provide high-quality coal series kaolin rock for market.The indices of the coal series kaolin rock product that the inventive method is produced meets user and requires: iron content≤0.5%; Whiteness >=85%; Loss on ignition≤18%.
Detailed description of the invention
The present invention is described in further detail below: the present embodiment is implemented under premised on technical solution of the present invention, gives detailed embodiment, but protection scope of the present invention is not limited to following embodiment.
A kind of method utilizing coal series kaolin rock in dense medium separation gangue involved by the present embodiment, comprising:
One, the selection of gangue: the gangue selecting 2.2kg/l ~ 2.5kg/l density level in Raolinite+13mm grade;
Two, ore dressing:
(1) raw ore system
External raw ore is stored to raw ore ore stockyard by automobile supplied materials, by reprinting belt, tcrude ore is transported to crushing plant;
Crushing raw ore through a 100mm through type disintegrating machine, is entered main building washing for-100mm product is dispensed to two trestles through reprinting scraper plate at crushing plant by raw ore;
After raw ore enters main building, first enter 13mm classifying screen, sieve upper 100 × 13mm block cash and enter the sorting of dense medium drum-type separator, sieve lower 13 × 0mm end cash is transported to waste bin by belt;
(2) washing system
(1) dense medium drum-type machine separation system
100 × 13mm block cash enters just selections dense medium drum-type separator sorting; The liquid-tight degree of dense media of dense medium drum-type separator low-density room is 2.2kg/l, the liquid-tight degree of dense media of high density room is 2.5kg/l, separate rearrangement product, light row's thing and Raolinite three kinds of products, light row's thing and rearrangement product are transported to waste bin by belt and store after sculping screen de-mediated, and the first ore deposit of Raolinite enters product storage and deposits;
(2) medium system
The Raolinite specific gravity of separation, between 2.2 ~ 2.5kg/l, belongs to high specific gravity sorting, adopts ferrosilicon powder as the medium of formulated suspension; Suspension medium concentration is very large, and therefore have higher requirements to dielectric film filter system, sculping screen all adopts three sections of de-mediated;
In first selections, sculping screen one section of qualified medium returns drum-type separator low-density section as circulation fluid by pump, and rearrangement product and Raolinite just ore deposit sculping screen one section of qualified medium return drum-type separator high density fractions as circulation fluid by pump; All sculping screens two sections of rare Jie enter a stages of magnetic separation machine and reclaim, and a stages of magnetic separation mine tailing enters two stages of magnetic separation machines and reclaims, and two sections of washing mine tailings enter slime water system, return and close Jie's bucket after one section of two stages of magnetic separation concentrate enters the process of medium densifier; Sculping screen the 3rd section of rare Jie uses as sculping screen water spray;
Shunting is realized by two parts, Part I be low-density section enter drum-type separator conjunction Jie pipeline on establish shunting, branch in rare Jie's bucket; Part II be high density fractions enter drum-type separator conjunction Jie pipeline on establish shunting, branch to low-density Duan Hejie bucket;
Low-density section and high density fractions medium system are equipped with densitometer, and can regulate separately two sections of separating densities, automatic controlled water replanishing valve all established by each bucket, can realize the automatic control of the stable of the liquid level of bucket and density;
(3) concentrated press filteration system
Classifying cyclone overflow, filter press filtrate enters concentration basin, and after concentrated, underflow is beaten to filter press agitator by pump, then feeds filter press dehydration recovery through pan feeding pump, and the rear sludge of dehydration is transported to mine tailing by belt and stacks field;
The overflow of concentration basin is multiplexing as primary water retrieval system;
(3) product systems
Product adopts and lands form automobile and transport outward;
Light row's thing, rearrangement product ,-6mm end cash is transported to waste bin accumulating by belt conveyor gallery; Raolinite product at different levels, is transported to product through belt conveyor gallery and stacks field.
Describedly stack before field handpicking belt is set entering product, be used for checking on further, sort out the obvious non-Raolinite foreign material that product may be mixed into, to guarantee that product quality reaches requirement.
High specific gravity dense medium sorting technology is applied transformations to First Domestic coal series kaolin rock ore dressing plant by the present invention, and this ore dressing plant is positioned at Erdos area, is under the jurisdiction of gouy east, Inner Mongol coal group.This technology filled up in world wide the blank utilizing dense medium sorting technology sorting coal series kaolin rock, is enterprise and social creativity larger economic benefit and environmental benefit.
The above; be only the present invention's preferably detailed description of the invention; these detailed description of the invention are all based on the different implementations under general idea of the present invention; and protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (2)
1. utilize a method for coal series kaolin rock in dense medium separation gangue, it is characterized in that, comprising:
One, the selection of gangue: the gangue selecting 2.2kg/l ~ 2.5kg/l density level in Raolinite+13mm grade;
Two, ore dressing:
(1) raw ore system
External raw ore is stored to raw ore ore stockyard by automobile supplied materials, by reprinting belt, tcrude ore is transported to crushing plant;
Crushing raw ore through a 100mm through type disintegrating machine, is entered main building washing for-100mm product is dispensed to two trestles through reprinting scraper plate at crushing plant by raw ore;
After raw ore enters main building, first enter 13mm classifying screen, sieve upper 13 ~ 100mm block cash and enter the sorting of dense medium drum-type separator, sieve lower 0 ~ 13mm end cash is transported to waste bin by belt;
(2) washing system
(1) dense medium drum-type machine separation system
13 ~ 100mm block cash enters just selections dense medium drum-type separator sorting; The liquid-tight degree of dense media of dense medium drum-type separator low-density room is 2.2kg/l, the liquid-tight degree of dense media of high density room is 2.5kg/l, separate rearrangement product, light row's thing and Raolinite three kinds of products, light row's thing and rearrangement product are transported to waste bin by belt and store after sculping screen de-mediated, and the first ore deposit of Raolinite enters product storage and deposits;
(2) medium system
The Raolinite specific gravity of separation, between 2.2 ~ 2.5kg/l, belongs to high specific gravity sorting, and adopt ferrosilicon powder as the medium of formulated suspension, sculping screen all adopts three sections of de-mediated;
In first selections, light row's thing sculping screen one section of qualified medium returns drum-type separator low-density section as circulation fluid by pump, and rearrangement product and Raolinite just ore deposit sculping screen one section of qualified medium return drum-type separator high density fractions as circulation fluid by pump; All sculping screens two sections of rare Jie enter a stages of magnetic separation machine and reclaim, and a stages of magnetic separation mine tailing enters two stages of magnetic separation machines and reclaims, and two sections of washing mine tailings enter slime water system, return and close Jie's bucket after one section of two stages of magnetic separation concentrate enters the process of medium densifier; Sculping screen the 3rd section of rare Jie uses as sculping screen water spray;
Shunting is realized by two parts, Part I be low-density section enter drum-type separator conjunction Jie pipeline on establish shunting, branch in rare Jie's bucket; Part II be high density fractions enter drum-type separator conjunction Jie pipeline on establish shunting, branch to low-density Duan Hejie bucket;
Low-density section and high density fractions medium system are equipped with densitometer, and can regulate separately two sections of separating densities, automatic controlled water replanishing valve all established by each bucket, can realize the automatic control of the stable of the liquid level of bucket and density;
(3) concentrated press filteration system
Two sections of washing mine tailings enter classifying cyclone process, classifying cyclone overflow, and filter press filtrate enters concentration basin, after concentrated, underflow is beaten to filter press agitator by pump, then feeds filter press dehydration recovery through pan feeding pump, and after dehydration, sludge is transported to mine tailing stacking field by belt;
The overflow of concentration basin is multiplexing as primary water retrieval system;
(3) product systems
Product adopts and lands form automobile and transport outward;
Light row's thing, rearrangement product, 0 ~ 13mm end cash is transported to waste bin accumulating by belt conveyor gallery; Raolinite product at different levels, is transported to product through belt conveyor gallery and stacks field.
2. the method utilizing coal series kaolin rock in dense medium separation gangue according to claim 1, is characterized in that, describedly stacks before field and arranges handpicking belt entering product, sorts out the obvious non-Raolinite foreign material be mixed in product.
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| CN105268544B (en) * | 2015-12-01 | 2018-02-23 | 中国矿业大学 | A kind of wide grade Coaseries kaolin process for upgrading based on fluidization sorting |
| CN106379909A (en) * | 2016-08-31 | 2017-02-08 | 付鹏图 | Preparation method for producing coal series kaolin from waste burned coal gangue |
| CN109647611B (en) * | 2018-11-06 | 2021-09-21 | 无锡多瑞玛科技有限公司 | Heavy medium suspension for mineral separation and preparation method thereof |
| CN114716223B (en) * | 2022-05-11 | 2023-03-31 | 湖北工业大学 | Coal gangue foundation road roadbed layer material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4838433A (en) * | 1979-04-11 | 1989-06-13 | Tatabanyai Szenbanyak | Process for the separation of rock refuse and coal products |
| CN101869877A (en) * | 2010-06-09 | 2010-10-27 | 重庆南桐矿业有限责任公司南桐选煤厂 | Coal gangue sorting process |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4838433A (en) * | 1979-04-11 | 1989-06-13 | Tatabanyai Szenbanyak | Process for the separation of rock refuse and coal products |
| CN101869877A (en) * | 2010-06-09 | 2010-10-27 | 重庆南桐矿业有限责任公司南桐选煤厂 | Coal gangue sorting process |
Non-Patent Citations (3)
| Title |
|---|
| 同忻矿井选煤厂工艺设计浅析;计晓科等;《露天采矿技术》;20091231(第5期);第33-35页 * |
| 同忻选煤厂精煤和中煤产品结构设计的优化及应用;刘峰;《煤质技术》;20091130(第6期);第53-55页 * |
| 基于硬度的矸石选择性破碎分选的可行性探讨;陈哲等;《矿山机械》;20111130;第39卷(第11期);第90-91页 * |
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