CN108097451A - A kind of coal separation station-service magnetic separation process flow - Google Patents
A kind of coal separation station-service magnetic separation process flow Download PDFInfo
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- CN108097451A CN108097451A CN201810105062.7A CN201810105062A CN108097451A CN 108097451 A CN108097451 A CN 108097451A CN 201810105062 A CN201810105062 A CN 201810105062A CN 108097451 A CN108097451 A CN 108097451A
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- heavy
- magnetic separation
- media suspension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
Abstract
The present invention relates to coal magnetic separation technology fields, and in particular to a kind of coal separation station-service magnetic separation process flow includes the following steps：The mixture of cleaned coal and heavy-media suspension is subjected to de-mediated by de-mediated sieve bend, sieve top grade is cleaned coal, sieves heavy-media suspension qualified subject to low-grades；Heavy-media suspension is obtained after accurate qualified heavy-media suspension is shunted；Cleaned coal is subjected to secondary de-mediated by sculping screen, the sieve dilute heavy-media suspension of low-grades is obtained after de-mediated；The heavy-media suspension of acquisition and dilute heavy-media suspension are sent to solid-liquid concentrator and are concentrated together；The underflow obtained after concentration enters qualified medium bucket, and overflow enters magnetic separator and carries out magnetic separation；Concentrate after magnetic separation enters qualified medium bucket, and tailing is black water.Magnetic separation process flow provided by the present invention, simplifies magnetic separation process link, reduces magnetic plant quantity, reduces floor space, facilitates production operation and maintenance, improves magnetic separation effect and the rate of recovery, reduces cost.
Description
Technical field
The present invention relates to coal magnetic separation technology field more particularly to a kind of coal separation station-service magnetic separation process flows.
Background technology
At present, the common dense medium purifica tion recovery process of coal preparation plant has direct magnetic separation, concentration magnetic separation and the combination of the two to make
With.Direct magnetic separation is divided into two sections of direct magnetic separation and the direct magnetic separation process flow of single hop, and equipment needed for direct magnetic separation is more, occupies empty
Between it is big and larger by supplied materials influence of fluctuations during magnetic separation, magnetic separation effect is poor；Concentration magnetic separation process easily loses fine grained magnetic
Iron ore medium, direct magnetic separation with concentration magnetic separation be applied in combination flow complexity, meanwhile, easily lose fine grained magnetite media, shadow
Magnetic separation effect is rung.
The content of the invention
In order to solve the above-mentioned technical problem the present invention, provides a kind of coal separation station-service magnetic separation process flow, ensure that magnetic separation is imitated
Fruit reduces magnetic plant quantity, and flow is simple, and magnetic separation effect is preferable and improves magnetic separation recovery rate.
In order to reach above-mentioned technique effect, the present invention includes following technical scheme：A kind of coal separation station-service magnetic separation process flow,
Include the following steps：
(1) cleaned coal and the mixture of heavy-media suspension sub-elected screening installation is taken off by de-mediated sieve bend
It is situated between, sieve top grade is cleaned coal, sieves heavy-media suspension qualified subject to low-grades；
(2) heavy-media suspension is obtained after accurate qualified heavy-media suspension is shunted；Cleaned coal is passed through into sculping screen
The sieve dilute heavy-media suspension of low-grades is obtained and using water injector by spraying water above sculping screen, after de-mediated；
(3) heavy-media suspension and dilute heavy-media suspension obtained in the step (2) is sent to solid-liquid concentration together
Equipment is concentrated；
(4) underflow obtained in step (3) after concentration enters directly into qualified medium bucket, and overflow enters magnetic separator progress
Magnetic separation；
(5) concentrate in step (4) after magnetic separation enters qualified medium bucket, and tailing is black water, to slime water treatment
After obtain coal slime.
Using above-mentioned technical proposal, including following advantageous effect：Coal separation station-service magnetic separation process flow provided by the present invention,
Magnetic separation process link is simplified, reduces magnetic plant quantity, reduces floor space, facilitates production operation and maintenance, is improved
Magnetic separation effect and the rate of recovery, reduce cost.
Description of the drawings
Fig. 1 is provided the schematic diagram of coal separation station-service magnetic separation process flow by the embodiment of the present invention.
1st, de-mediated sieve bend；2nd, deep cone thickener；3rd, magnetic separator；4th, qualified medium bucket.
Specific embodiment
The present invention is described in further detail below by specific embodiment and with reference to attached drawing.
Embodiment：
A kind of coal separation station-service magnetic separation process flow is present embodiments provided, is included the following steps：
The mixture of S1, the cleaned coal that screening installation is sub-elected and heavy-media suspension are taken off by de-mediated sieve bend
It is situated between, sieve top grade is cleaned coal, sieves heavy-media suspension qualified subject to low-grades；
Preferably, the de-mediated sieve bend 1 uses 0.2~1.0mm sieve pore specifications.
S2, heavy-media suspension is obtained after accurate qualified heavy-media suspension is shunted；Cleaned coal is passed through into sculping screen
Secondary de-mediated is carried out, and obtains the dilute dense media of sieve low-grades using water injector by spraying water above sculping screen, after de-mediated and suspends
Liquid；It is clean that the medium that will be adhered on the products such as cleaned coal removing is sprayed water on the sieve.
The heavy-media suspension and dilute heavy-media suspension obtained in S3, the step S2 is sent to solid-liquid concentration and sets together
It is standby to be concentrated；
The underflow obtained after being concentrated in S4, step S3 enters directly into qualified medium bucket, and overflow enters magnetic separator progress
Magnetic separation；By controlling the underflow discharge amount of deep cone thickener 2, ensureing the suitable items of indexs such as underflow density, magnetic material content
Under part, the recycling of qualified medium bucket is emitted into.
Concentrate in S5, step S4 after magnetic separation enters qualified medium bucket, and tailing is black water, after slime water treatment
Obtain coal slime.
The heavy-media suspension after being shunted under sculping screen is sent into deep cone thickener 2 or other in this implementation stronger concentration
The solid-liquid concentrator of function), it is the 10%~60% of feeding by the discharge rate for controlling concentrator underflow, is ensureing bottom
Under conditions of the parameters such as solid volume concentration, density, magnetic material content, the coal slurry content of stream meet production requirement, concentrator
Underflow be directly entered qualified medium bucket, control deep cone concentration underflow density, guarantee can be facilitated to be hanged into 4 medium of qualified medium bucket
The quality of supernatant liquid.Its overflow enters magnetic separator 3, and 3 concentrate of magnetic separator is also into qualified medium bucket, and tailing is black water, according to coal
The property of mud obtains coal slime after being handled according to different slime water treatment methods.
Using above-mentioned coal separation station-service magnetic separation process flow, magnetic separation effect not only ensure that, but also reduce the equipment number of units of magnetic separation,
So as to reduce the area occupied of magnetic plant, magnetic separation recovery rate is improved, existing magnetic separation process is overcome and easily loses fine grained
The defects of magnetite media, simplifies technological process, easy to operation, reduces production cost.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of coal separation station-service magnetic separation process flow, which is characterized in that include the following steps：
(1) cleaned coal and the mixture of heavy-media suspension sub-elected screening installation carries out de-mediated, sieve by de-mediated sieve bend
Top grade is cleaned coal, sieves heavy-media suspension qualified subject to low-grades；
(2) heavy-media suspension is obtained after accurate qualified heavy-media suspension is shunted；Cleaned coal is carried out by sculping screen
Secondary de-mediated, and the sieve dilute heavy-media suspension of low-grades is obtained using water injector by spraying water above sculping screen, after de-mediated；
(3) heavy-media suspension and dilute heavy-media suspension obtained in the step (2) is sent to solid-liquid concentrator together
It is concentrated；
(4) underflow obtained in step (3) after concentration enters directly into qualified medium bucket, and overflow enters magnetic separator and carries out magnetic
Choosing；
(5) concentrate in step (4) after magnetic separation enters qualified medium bucket, and tailing is black water, to being obtained after slime water treatment
Obtain coal slime.
2. coal separation station-service magnetic separation process flow according to claim 1, which is characterized in that the de-mediated sieve bend uses
0.2~1.0mm sieve pore specifications.
3. coal separation station-service magnetic separation process flow according to claim 1, which is characterized in that used in the step (3)
Solid-liquid concentrator is deep cone thickener.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810105062.7A CN108097451A (en) | 2018-01-27 | 2018-01-27 | A kind of coal separation station-service magnetic separation process flow |
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| CN201810105062.7A CN108097451A (en) | 2018-01-27 | 2018-01-27 | A kind of coal separation station-service magnetic separation process flow |
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| CN108097451A true CN108097451A (en) | 2018-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508393A (en) * | 2019-08-26 | 2019-11-29 | 中国矿业大学 | A kind of reduction sink float coal works product carrying dielectric method |
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| CA1118723A (en) * | 1977-09-20 | 1982-02-23 | Joseph H. Absil | Heavy magnetic media hydrocyclonic separation process with screening, magnetic separation and recycling of liquids |
| CN1424151A (en) * | 2002-12-31 | 2003-06-18 | 天地科技股份有限公司唐山分公司 | Process for heavy media separation of coarse coal slurry |
| CN102824955A (en) * | 2012-09-13 | 2012-12-19 | 河南理工大学 | Method for using refined coal magnetic separator tailings for flotation water-spraying foam removal |
| CN103816992A (en) * | 2014-03-26 | 2014-05-28 | 威海市海王旋流器有限公司 | Coarse slime dense medium sorting technology and system |
| CN106179717A (en) * | 2016-07-22 | 2016-12-07 | 中煤科工集团唐山研究院有限公司 | A kind of full level of thermal coal is selected in simplified heavy medium sorting process |
-
2018
- 2018-01-27 CN CN201810105062.7A patent/CN108097451A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1118723A (en) * | 1977-09-20 | 1982-02-23 | Joseph H. Absil | Heavy magnetic media hydrocyclonic separation process with screening, magnetic separation and recycling of liquids |
| CN1424151A (en) * | 2002-12-31 | 2003-06-18 | 天地科技股份有限公司唐山分公司 | Process for heavy media separation of coarse coal slurry |
| CN102824955A (en) * | 2012-09-13 | 2012-12-19 | 河南理工大学 | Method for using refined coal magnetic separator tailings for flotation water-spraying foam removal |
| CN103816992A (en) * | 2014-03-26 | 2014-05-28 | 威海市海王旋流器有限公司 | Coarse slime dense medium sorting technology and system |
| CN106179717A (en) * | 2016-07-22 | 2016-12-07 | 中煤科工集团唐山研究院有限公司 | A kind of full level of thermal coal is selected in simplified heavy medium sorting process |
Non-Patent Citations (1)
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| 彭荣任,丛桂芝,白守义: "《重介质旋流器选煤》", 30 September 1998, 北京冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508393A (en) * | 2019-08-26 | 2019-11-29 | 中国矿业大学 | A kind of reduction sink float coal works product carrying dielectric method |
| CN110508393B (en) * | 2019-08-26 | 2021-11-16 | 中国矿业大学 | Method for reducing medium carrying of products of heavy medium coal separation plant |
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Application publication date: 20180601 |
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