CN104959220B - Can two sections of methods of separating density of on-line control three products heavy medium cyclone - Google Patents
Can two sections of methods of separating density of on-line control three products heavy medium cyclone Download PDFInfo
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- CN104959220B CN104959220B CN201510470070.8A CN201510470070A CN104959220B CN 104959220 B CN104959220 B CN 104959220B CN 201510470070 A CN201510470070 A CN 201510470070A CN 104959220 B CN104959220 B CN 104959220B
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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
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Abstract
It is a kind of can two sections of methods of separating density of on-line control three products heavy medium cyclone, the device that the method is used includes three products heavy medium cyclone, cleaned coal lets out Jie's sieve bend, head coal sculpingscreen, coal slime qualified medium bucket, coal slime qualification medium pump etc., the method is in three products heavy medium cyclone process coal preparation flowsheet, it is relatively low part density of heavy medium to be distributed from fine coal properties matter cyclone overflow, granularity is thinner, coal slurry content heavy suspension higher enters raw coal qualified medium bucket, three products heavy medium cyclone is squeezed into by raw coal qualification medium pump to recycle.By the separating density for adjusting section cyclone of how much regulation separating densities of shunt volume, particularly two.When raw material coal washability feature changes or needs to adjust the product mix, the working environment of stabilization can not only be provided for fine coal properties matter eddy flow, guarantee equipment is well run, without stopping production, just easily and fast two sections of cyclone separating densities can be particularly by on-line control three products heavy medium cyclone.
Description
Technical field
The present invention relates to the heavy media coal separation method of Coal Clean processing technology field, a kind of energy more particularly to is online
Easily and fast adjust two sections of methods of separating density of three products heavy medium cyclone.
Background technology
Without pressure（There is pressure）Feed three products heavy medium cyclone coal preparation technology is the presently preferred coal separation technology of China,
Secondly the adjustment of section cyclone separating density adopts change underflow tap diameter and sets online separating density adjusting means always, this
Two kinds of traditional two section cyclone separating density adjusting methods, the former needs to change underflow opening after stopping production, and the latter is not only only applicable
In the fine setting of separating density, and often due to abrasion and corrosion, operation difficult.Thus, when raw material coal washability feature occurs
When changing or needing to adjust the product mix, two sections of cyclone separating densities cannot be in time adjusted.
Chinese patent ZL201310158066.9 provides a kind of " side for ensuring high separation precision of coal slime heavy medium hydrocyclone
Method ", the method eliminates the current divider of prior art, and cleaned coal is let out into Jie's sieve bend（Or gravity flow screen）Slipped with head coal sculpingscreen sieve
Qualified heavy suspension flows directly into coal slime qualified medium bucket under the sieve of the first paragraph of groove, for fine coal properties matter cyclone provides stabilization
Working environment.Treat that the liquid level in coal slime qualified medium bucket rises to certain altitude, the heavy suspension in bucket passes through overflow pipe stream again
Enter raw coal qualified medium bucket.Although the method achieve the separation index that can keep good, it is ensured that fine coal properties matter cyclone
The goal of the invention of sharpness of separation high, but still have unsatisfactory part, show：When raw material coal washability feature changes
Or when needing to adjust the product mix, the method that Chinese patent ZL201310158066.9 is provided cannot not stop production online, convenient, fast
Two sections of separating densities of three products heavy medium cyclone are adjusted fastly.
The content of the invention
The present invention be directed to the defect that prior art is present, propose that one kind can easily and fast adjust three products' dense-media online
Two sections of methods of separating density of matter cyclone.The method is the distributary division in three products heavy medium cyclone process coal preparation flowsheet
Point density of heavy medium is relatively low, granularity relatively thin, coal slurry content fine coal properties matter cyclone overflow higher to qualified Jie of raw coal
Matter bucket, by adjust shunt volume number, realize regulation separating density be particularly two sections of purposes of the separating density of cyclone.
Realize that above-mentioned purpose uses following technical scheme：
It is a kind of can two sections of methods of separating density of on-line control three products heavy medium cyclone, the device bag that the method is used
Include three products heavy medium cyclone, cleaned coal let out Jie's sieve bend, head coal sculpingscreen, coal slime qualified medium bucket, coal slime qualification medium pump,
Raw coal qualified medium bucket, raw coal qualification medium pump, fine coal properties matter cyclone and pipeline, its method for separating is：Feed coal and conjunction
Lattice heavy suspension carries out dense medium separation into three products heavy medium cyclone, and the cleaned coal selected, middle coal, spoil enter respective
De-mediated dewatering system, in the cleaned coal de-mediated dewatering system, cleaned coal lets out qualified heavy suspension, head coal sculpingscreen under Jie's sieve bend sieve
Qualified heavy suspension under the sieve of the lower chute first paragraph of sieve, it is all or part of to enter coal slime qualified medium bucket, through coal slime qualified medium
Pump squeezes into the sorting of fine coal properties matter cyclone, and the overflow of fine coal properties matter cyclone enters cleaned coal magnetic separator, coal magnetic in underflow entrance
Select machine, it is characterised in that the overflow of a part of coal slime heavy medium cyclone is shunted to raw coal qualified medium bucket, by qualified Jie of raw coal
Matter pump squeezes into three products heavy medium cyclone recycling.
Further, overflow isocon is installed between fine coal properties matter cyclone overfall and raw coal qualified medium bucket
, there is shunt volume governing loop on road.
Further, dress of the described shunt volume governing loop from current divider, regulating valve or other any regulation shunt volumes
Put.
Further, described shunt volume governing loop can set suitable overflow isocon according to raw material coal washability feature
Road and the caliber of overflow distribution pipeline, realize regulation shunt volume.
Using above-mentioned technical proposal, compared with prior art, the present invention shunts one from fine coal properties matter cyclone overflow
Part part density of heavy medium is relatively low, granularity relatively thin, coal slurry content heavy suspension higher enters raw coal qualified medium bucket,
Branch to raw coal qualified medium bucket pipeline in, set shunt volume governing loop, by adjust overflow shunt volume number come
Adjust the separating density of section cyclone of separating density, particularly two.Using the process, when raw material coal washability feature occurs
When changing or needing to adjust the product mix, the working environment of stabilization can not only be provided for fine coal properties matter eddy flow, it is ensured that equipment
Good operation, and without stopping production, just easily and fast two sections of cyclones can be particularly by on-line control three products heavy medium cyclone
Separating density.
Brief description of the drawings
Fig. 1 is equipment flowsheet of the invention.
Marked in figure：Three products heavy medium cyclone 1, cleaned coal lets out Jie's sieve bend（Or gravity flow screen）2, middle coal de-mediated dehydration system
System 3, spoil de-mediated dewatering system 4, head coal sculpingscreen 5, coal slime qualified medium bucket 6, coal slime qualification medium pump 7, fine coal properties matter
Cyclone 8, cleaned coal magnetic separator 9, middle coal magnetic separator 10, pipeline 11, raw coal qualified medium bucket 12, raw coal qualification medium pump 13；
Specific implementation method
The present invention will be further described below in conjunction with the accompanying drawings.
Shown in figure, compared with prior art ZL201310158066.9, improvements of the invention are：By fine coal properties
An overflow shunting part for matter cyclone 8 is branching to the pipeline of raw coal qualified medium bucket 12 to raw coal qualified medium bucket 12
In 11, there is the link of adjustable shunt volume, dividing for section cyclone of separating density, particularly two is adjusted by shunt regulating link
Select density.Its method for separating is：
A. the qualified heavy suspension that feed coal and raw coal qualification medium pump 13 are sent feeds three products heavy medium cyclone 1 and enters
Row dense medium separation.
Feed-type：Feed coal and qualified heavy suspension feed non-pressure feed three-product weight with gravity and pressure mode respectively
Medium cyclone, or feed coal is sent into pressurized feeding three products' dense-media matter eddy flow as stressing together with qualified heavy suspension
Device.
B. after feed coal is sorted through three products heavy medium cyclone 1, coal de-mediated dewatering system 3 in middle coal entrance, spoil enters
Enter spoil de-mediated dewatering system 4, cleaned coal lets out Jie's sieve bend into cleaned coal（Or gravity flow screen）2.
C. cleaned coal lets out Jie's sieve bend（Or gravity flow screen）Chute under qualified heavy suspension, the sieve of head coal sculpingscreen 5 under 2 sieve
Qualified heavy suspension under one section of sieve, it is all or part of into after coal slime qualified medium bucket 6, squeezed into through coal slime qualification medium pump 7
Sorting in fine coal properties matter cyclone 8.Coal magnetic separator 10 in the underflow entrance of fine coal properties matter cyclone 8, an overflow part is entered
Enter cleaned coal magnetic separator 9, a part branches to raw coal qualified medium bucket 12 through overflow distribution pipeline 11.
Overflow distribution pipeline 11 is installed between the overfall of fine coal properties matter cyclone 8 and raw coal qualified medium bucket 12,
There is shunt volume governing loop.
Shunt volume governing loop one can be by being realized using shunting quantity regulating device is set that two can be according to original
Material coal washability feature sets suitable pipe-line system and caliber, realizes regulation shunt volume.
Shunting quantity regulating device can select any adjusting meanss such as current divider, regulating valve, and this device is arranged on and branches to
On the pipeline 11 of raw coal qualified medium bucket 12.
D. the qualified heavy suspension raw coal qualification medium pump 13 in raw coal qualified medium bucket 12 squeezes into three products' dense-media matter
Cyclone 1 is recycled.
Operation principle of the invention：
The present invention is using the part density of heavy medium that is distributed from the overflow of fine coal properties matter cyclone 8 is relatively low, grain
Degree relatively thin, coal slurry content heavy suspension higher enters raw coal qualified medium bucket 12, subsequently into three products heavy medium cyclone
1, by shunt volume governing loop, how much sortings to adjust section cyclone of separating density, particularly two of regulation shunt volume are close
Degree, reach do not stop production, easily and fast on-line control three products heavy medium cyclone be particularly two sections of mesh of cyclone separating density
's.
Preferable embodiment of the invention is these are only, is not intended to limit the scope of the present invention, it is any in this hair
Any modification, equivalent substitution and improvements within bright design philosophy and principle etc., all should be within the scope of the present invention.
Claims (2)
1. it is a kind of can two sections of methods of separating density of on-line control three products heavy medium cyclone, the device that the method is used includes
Three products heavy medium cyclone, cleaned coal let out Jie's sieve bend, head coal sculpingscreen, coal slime qualified medium bucket, coal slime qualification medium pump, original
Coal qualified medium bucket, raw coal qualification medium pump, fine coal properties matter cyclone and pipeline, its method for separating is：Feed coal and qualified
Heavy suspension carries out dense medium separation into three products heavy medium cyclone, and the cleaned coal selected, middle coal, spoil enter respective de-
Jie's dewatering system, in cleaned coal de-mediated dewatering system, cleaned coal lets out qualified heavy suspension, the sieve of head coal sculpingscreen under Jie's sieve bend sieve
Qualified heavy suspension under the sieve of lower chute first paragraph, it is all or part of to enter coal slime qualified medium bucket, through coal slime qualification medium pump
The sorting of fine coal properties matter cyclone is squeezed into, the overflow of fine coal properties matter cyclone enters cleaned coal magnetic separator, coal magnetic separation in underflow entrance
Machine, it is characterised in that the overflow of a part of coal slime heavy medium cyclone is shunted to raw coal qualified medium bucket, by raw coal qualified medium
Pump squeezes into three products heavy medium cyclone recycling；Between fine coal properties matter cyclone overfall and raw coal qualified medium bucket
Overflow distribution pipeline is installed, there is shunt volume governing loop；Described shunt volume governing loop from current divider, regulating valve or its
The device of its any regulation shunt volume.
2. it is according to claim 1 can two sections of methods of separating density of on-line control three products heavy medium cyclone, it is special
Levy and be, the caliber of the overflow distribution pipeline and overflow distribution pipeline being adapted to is set according to raw material coal washability feature, realize adjusting
Section shunt volume.
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| CN104959220B true CN104959220B (en) | 2017-06-16 |
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| CN105381862B (en) * | 2015-12-16 | 2019-01-25 | 中国神华能源股份有限公司 | Pan feeding buffer and medium bucket for heavy media coal separation |
| CN106179713A (en) * | 2016-07-19 | 2016-12-07 | 四川乔丰新材料科技有限公司 | One exempts from desliming dual medium cyclone dressing technique |
| CN106370555A (en) * | 2016-10-10 | 2017-02-01 | 山西汾西矿业（集团）有限责任公司 | Densitometer device for coal dressing system |
| CN106824511A (en) * | 2017-04-10 | 2017-06-13 | 内蒙古广纳煤业（集团）有限责任公司 | Dense-medium separation method |
| CN109225611B (en) * | 2018-11-28 | 2020-06-05 | 中国矿业大学 | Coarse slime separating system and process of three-product liquid-solid fluidized bed |
| CN110560258B (en) * | 2019-09-23 | 2023-09-29 | 山东科技大学 | Device and process for selecting ultra-clean coal by physical cyclone recovery jigging overflow coal slime |
| CN112934651A (en) * | 2021-01-21 | 2021-06-11 | 国家能源集团国源电力有限公司 | Banana sieve |
| CN113304877A (en) * | 2021-05-28 | 2021-08-27 | 中煤(天津)地下工程智能研究院有限公司 | Three-product dense medium cyclone two-section separation density and pressure online regulation and control method |
| CN115970882B (en) * | 2023-03-17 | 2023-07-07 | 天津美腾科技股份有限公司 | Regulation and control method |
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| CN2047299U (en) * | 1989-04-17 | 1989-11-08 | 河南石油勘探局钻井公司 | Sand remover with automatic bottom-flow controller |
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