CN205797474U - A kind of high ash coarse slime degree of depth fall ash system - Google Patents
A kind of high ash coarse slime degree of depth fall ash system Download PDFInfo
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- CN205797474U CN205797474U CN201620607586.2U CN201620607586U CN205797474U CN 205797474 U CN205797474 U CN 205797474U CN 201620607586 U CN201620607586 U CN 201620607586U CN 205797474 U CN205797474 U CN 205797474U
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- 239000003245 coal Substances 0.000 claims abstract description 101
- 239000000463 material Substances 0.000 claims abstract description 82
- 239000012141 concentrate Substances 0.000 claims abstract description 20
- 238000005188 flotation Methods 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 239000000706 filtrate Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 10
- 238000010410 dusting Methods 0.000 claims 1
- 239000000047 product Substances 0.000 abstract description 24
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
- 230000018044 dehydration Effects 0.000 description 8
- 238000006297 dehydration reaction Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
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- 230000007613 environmental effect Effects 0.000 description 3
- 238000004537 pulping Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 description 1
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
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- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
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- 239000010866 blackwater Substances 0.000 description 1
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Abstract
This utility model provides a kind of high ash coarse slime degree of depth fall ash system, including: hydraulic classification swirler group, to the coarse slime classification of high ash；Hydraulic classifier, the underflow materials classification to hydraulic classification swirler group；TBS separator, sorts the underflow materials of hydraulic classifier；Sieve bend, is dehydrated the underflow materials of TBS separator；High-frequency screen, is dehydrated the on-the-sieve material of sieve bend；Concentrate cyclone group, concentrates classification to the overflow material of TBS separator；High frequency vibrating fine screen, sorts the underflow materials of concentrate cyclone group；Pressing filter, is dehydrated the on-the-sieve material of high frequency vibrating fine screen；The described floatation system overflow material to hydraulic classification swirler group, hydraulic classifier and concentrate cyclone group, the undersize material of high frequency vibrating fine screen, and the filtrate flotation of pressing filter.High ash coarse slime degree of depth fall ash system of the present utility model can improve clean coal recovery and the head coal product quality of high ash coarse slime, reduces the ash in coarse slime.
Description
Technical field
This utility model belongs to field, colliery, particularly a kind of high ash coarse slime degree of depth fall ash system.
Background technology
China is coal production state maximum in the world and country of consumption, and coal reserves is 9915.60 hundred million tons, once
Accounting for 70% in production of energy and the structure of consumer demand, wherein the coal of 84% directly burns as thermal coal, this energy based on coal
Source structure will not change in the most considerably long period.As developing country maximum in the world, China is economical over nearly 20 years
Growing continuously and fast, demand and consumption to the energy increase sharply, more and more prominent by the environmental problem caused by coal utilization
Go out.Stepping up of Environmental Protection in China regulation and standard thereof, following Energy Mix will be lentamente to natural gas, water power, nuclear energy
Tilt Deng clean energy resource, but in foreseeable future, coal ratio in China's energy consumption mix will not occur turning
Change.China produces in a large number and consumes coal and the environmental problem that causes, cause the Chinese government and the great attention of the people and
The concern of surrounding countries.In order to effectively utilize coal resources, reduce the coal-fired pollution to environment, it is ensured that what national economy was healthy can
Sustainable development, it is necessary to carry out clean coal technology.Clean coal technology be converted into coal washing as source, with coal guide, with
Coal Clean burning and the technical system that generating is core.Coal Washing Techniques is the most ripe in clean coal technology, the most reliable, throws
Money and operating cost are minimum.The spoil in raw coal can be removed by coal washing, reduce sulphur content and ash in coal, improve coal
Quality and increase coal commodity kind, for effectively utilize coal, reduce pollution that caused by coal burning create conditions.
Along with the improving constantly of Mechanized Coal Mining Operation in China degree, the continuous deterioration of geological conditions, high ash difficulty selects coarse slime
Ratio be continuously increased, the feature of coal mainly shows as in raw coal that fine content is big, ash is big, the little several sides of granularity
Face.Therefore, the sorting process research to high ash coarse slime just seems the most important.
Chinese patent CN101502818A discloses a kind of integrated device for hydraulic classification and sorting of coarse slime as well and separation system,
This integrated apparatus proposes hydraulic classification swirler and rising classification machine are carried out organic assembling, simplifies sorting process, contracting
Short process coal preparation flowsheet, reduce construction of coal preparation plant investment and operating cost.
Chen Si Lou Kuang coal preparation plant of Henan coalification Yong Mei group has carried out technological transformation in 2010 to coarse slime separating process,
Improved rough coal sludge treatment technology is: jigging cleaned coal is after dewatering screen is dehydrated, and the lower black water of sieve enters hydraulic classiciation eddy flow
Device, the overflow of hydrocyclone enters floatation system, and underflow enters DSF coal slurry separator (that is, separation of coarse slime machine), sorted after
Tail coal be directly entered coal slime centrifuge dehydration, the product after dehydration is directly incorporated into commodity end raw coal, and (particle diameter is 0.25-1mm's
Raw coal)；Overflow is after vibration sieve bend is dehydrated desliming in advance, and oversize enters newly-increased coal slime centrifuge dehydration；End after dehydration
Cleaned coal (particle diameter cleaned coal less than 0.25mm) product mixes commodity fine cleaned coal (particle diameter cleaned coal less than 0.25mm).
New village coal preparation plant of Shen Huo group has carried out technological transformation in 2009 pairs of separation of coarse slime systems, has increased spiral separating newly
Machine, sorts the two-part in traditional handicraft before, has changed syllogic sorting into, to this section of 1-0.25mm coarse slime, individually
Extracting and sort with spiral, the process chart after technological transformation is as shown in Figure 1.Desliming screen undersize material
(that is, height ash coarse slime) enters into and carries out classification in classifying cyclone, and the overflow material after classification enters into floatation system to be carried out
Flotation, the underflow materials after classification enters in spiral and selects；Through spiral (having three discharging openings)
After sorting, there are three kinds of products, the product that ash is minimum filters through the first filter, obtains cleaned coal, and ash raises successively
Other two kinds of products filter through the second filter, obtain middle coal, the filtrate of the first filter and the second filter enters into
Floatation system carries out flotation.
In the coarse slime separating process commonly used at present, being all first to carry out classification with hydraulic classification swirler, granularity is big
Underflow product enter in separation of coarse slime machine, the overflow product that granularity is little enters in floatation system.It exists
Following shortcoming: hydraulic classification swirler, to particulate coal grading, is not necessarily to the classification that granularity is carried out, and certainly will cause height
The thin mud of ash enters partly into underflow, and then enters in TBS separator (that is, hindered bed separator)；TBS separator lower limit of separation
For 0.25mm, the sorting upper limit is 2-3mm, therefore the particle diameter thin mud assortment effect in TBS separator of high ash less than 0.25mm,
During the thin mud part of high ash enters into the overflow of TBS separator with ascending current in pan feeding, pollute cleaned coal, even cause fine cleaned coal
Product quality is undesirable.
Utility model content
The purpose of this utility model is to provide a kind of high ash coarse slime degree of depth fall ash system, and it is thick that this system can improve high ash
The clean coal recovery of coal slime and head coal product quality, reduce the ash in coarse slime.
The technical solution of the utility model is as follows:
A kind of high ash coarse slime degree of depth fall ash system, drops ash system and floatation system including before selecting after fall ash system, choosing；
Drop ash system before described choosing to include:
Hydraulic classification swirler group: for the high ash coarse slime of input is carried out classification；Described hydraulic classification swirler group
Including at least one hydraulic classification swirler；
Hydraulic classifier: for classification will be carried out from the underflow materials of described hydraulic classification swirler group；
TBS separator: for sorting from the underflow materials of described hydraulic classifier；
Drop ash system after described choosing to include:
Sieve bend: for being dehydrated from the underflow materials of described TBS separator；
High-frequency screen: for being dehydrated to obtain middle coal to the on-the-sieve material from described sieve bend；Concentrate cyclone group:
For the overflow material from described TBS separator being carried out concentration classification；Described concentrate cyclone group includes that at least one is dense
Contracting cyclone；
High frequency vibrating fine screen: for sorting from the underflow materials of described concentrate cyclone group；
Pressing filter, for carrying out being dehydrated to obtain cleaned coal by the on-the-sieve material from described high frequency vibrating fine screen；
Described floatation system is for revolving from described hydraulic classification swirler group, described hydraulic classifier and described concentration
The overflow material of stream device group, from the undersize material of described high frequency vibrating fine screen, and the filtrate from described pressing filter
Carry out flotation to reclaim cleaned coal.
Preferably, described high ash coarse slime is the undersize material of raw coal desliming screen.
Preferably, the undersize material from described sieve bend is used as the water spray of described raw coal desliming screen.
Preferably, the undersize material from described high-frequency screen is used as the water spray of described raw coal desliming screen.
Preferably, the top discharge scalable of described hydraulic classifier.
Preferably, described high frequency vibrating fine screen is DERRICK high frequency vibrating fine screen.
The beneficial effects of the utility model are:
(1) high ash coarse slime degree of depth fall ash system of the present utility model, drops in ash system, by hydraulic classifier before it selects
Connect with TBS separator, by regulating the top discharge of hydraulic classifier, the shadow of granularity in strengthening hindered falling effect
Ringing, make hydraulic classifier have grading, and then make high grey coarse slime before entering the sorting of TBS separator, a part is high grey
Thin mud is discharged by overflow, decreases its pollution to head coal product, controls the rising of ash in head coal product, it is ensured that essence
The ash of product of coal is the lowest；
(2) high ash coarse slime degree of depth fall ash system of the present utility model, drops in ash system, by concentrate cyclone after it selects
The underflow materials of group is incorporated into DERRICK high frequency vibrating fine screen and processes, oversize flow through between every section of screen cloth be lined with resistance to
During the pulping groove of rubber milling, fully being overturn by water injector and granular and pulping again, Zai Quxia road screening operation, by repeatedly
Pulping and screening, thickness material is completely separated, and the thin mud of another part height ash is discharged by siftage, decreases it to head coal product
Pollution, control the rising of ash in head coal product, it is ensured that the ash of head coal product is the lowest；
(3) high ash coarse slime degree of depth fall ash system of the present utility model, by hydraulic classifier in fall ash system before its choosing
Hydraulic classiciation so that enter the material of TBS separator, the particularly particle diameter thin mud material content of high ash less than 0.125mm and enter
One step reduces, and decreases after sorting the content of the thin mud of high ash in the coarse-fine coal of overflow, alleviates the pressure of follow-up desliming operation；
(4) DERRICK high frequency in ash system, drops in high ash coarse slime degree of depth fall ash system of the present utility model after being selected by it
The effect of vibrating fine screen so that in cleaned coal, ash can reduce about 2.5%；
(5) high ash coarse slime degree of depth fall ash system of the present utility model, by by the siftage of sieve bend and high-frequency screen
Siftage, as the water spray of raw coal desliming screen, reduces the usage amount of recirculated water, decreases the negative of follow-up slime water treatment operation
Lotus.
Accompanying drawing explanation
The new village coal preparation plant of the Tu1Shi Shenhuo group technological transformation process chart to separation of coarse slime system；
Fig. 2 is the process chart of high ash coarse slime degree of depth fall ash system in this utility model；
Fig. 3 is the process chart of the choosing front fall ash system of high ash coarse slime degree of depth fall ash system in this utility model；
Fig. 4 is the process chart dropping ash system in this utility model after the choosing of high ash coarse slime degree of depth fall ash system.
Detailed description of the invention
Below by way of detailed description of the invention, technical solutions of the utility model and effect thereof are described further.Hereinafter implement
Mode is merely to illustrate content of the present utility model, is not limited to protection domain of the present utility model.Apply this practicality new
The simple change that this utility model is carried out by the design of type is all in the scope that this utility model is claimed.
It is illustrated in figure 1 the new village coal preparation plant of the Shen Huo group technological transformation process chart to separation of coarse slime system, its
It is in the separation of coarse slime system-based in existing two-period form sorting process, to add spiral, forms syllogic and divide
Choosing, its mud thin to 0.25mm height ash there is no separating effect, fine cleaned coal product can be made not meet quality standard.
As in Figure 2-4, high ash coarse slime degree of depth fall ash system of the present utility model, after fall ash system, choosing before selecting
Fall ash system and floatation system；
Drop ash system before described choosing to include:
Hydraulic classification swirler group: for the high ash coarse slime of input is carried out classification；Described hydraulic classification swirler group
Including at least one hydraulic classification swirler；
Hydraulic classifier: for classification will be carried out from the underflow materials of described hydraulic classification swirler group；
TBS separator: for sorting from the underflow materials of described hydraulic classifier；
Drop ash system after described choosing to include:
Sieve bend: for being dehydrated from the underflow materials of described TBS separator；
High-frequency screen: for being dehydrated to obtain middle coal to the on-the-sieve material from described sieve bend；Wherein, middle coal refers to
Ash coal between cleaned coal and spoil；
Concentrate cyclone group: for the overflow material from described TBS separator being carried out concentration classification；Described concentration is revolved
Stream device group includes at least one concentrate cyclone；
High frequency vibrating fine screen: for sorting from the underflow materials of described concentrate cyclone group；Dither is thin
Sieve preferred DERRICK high frequency vibrating fine screen (that is, MICHAEL DRAKE high frequency vibrating fine screen)；
Pressing filter, for carrying out being dehydrated to obtain cleaned coal by the on-the-sieve material from described high frequency vibrating fine screen；
Described floatation system is for revolving from described hydraulic classification swirler group, described hydraulic classifier and described concentration
The overflow material of stream device group, from the undersize material of described high frequency vibrating fine screen, and the filtrate from described pressing filter
Carry out flotation to reclaim cleaned coal.
Before choosing in fall ash system, hydraulic classifier and TBS separator are connected, by regulating the top of hydraulic classifier
Discharge, the impact of granularity in strengthening hindered falling effect, make hydraulic classifier have grading, and then make high ash coarse slime
Before entering the sorting of TBS separator, the thin mud of the high ash of a part is discharged by overflow, decreases its pollution to head coal product, control
Make the rising of ash in head coal product, it is ensured that the ash of head coal product is the lowest；
By the hydraulic classiciation of hydraulic classifier in fall ash system before its choosing so that enter the material of TBS separator, especially
It is that particle diameter is less than the thin mud material content of high ash of 0.125mm and reduces further, decreases after sorting high ash in the coarse-fine coal of overflow thin
The content of mud, alleviates the pressure of follow-up desliming operation；
By dropping ash system medium-high frequency vibrating fine screen, the effect of especially DERRICK high frequency vibrating fine screen after choosing so that essence
In coal, ash can reduce about 2.5wt%.
Described hydraulic classification swirler group, hydraulic classifier, TBS separator, sieve bend, high-frequency screen, concentrate cyclone group,
High frequency vibrating fine screen and pressing filter all can be from having bought on the market.
In one embodiment, described high ash coarse slime is the undersize material of raw coal desliming screen.
In one embodiment, the undersize material from described sieve bend is used as the water spray of described raw coal desliming screen.
In one embodiment, the undersize material from described high-frequency screen is used as the water spray of described raw coal desliming screen.
By using the undersize material of sieve bend and the undersize material of high-frequency screen as the water spray of raw coal desliming screen, reduce and follow
The usage amount of ring water, decreases the load of follow-up slime water treatment operation.
In one embodiment, the top discharge scalable of described hydraulic classifier.
As in Figure 2-4, the technical process of high ash coarse slime degree of depth fall ash system of the present utility model is as follows:
The highest ash coarse slime (i.e. the undersize material of raw coal desliming screen) input hydraulic classification swirler group carries out classification, classification
After overflow material input floatation system carry out flotation, underflow materials after classification input hydraulic classifier；
B. by adjusting the top discharge of hydraulic classifier, in strengthening hindered falling effect, the impact of granularity, makes waterpower divide
Level facility have the effect of classification, and hydraulic classifier carries out classification to underflow materials from hydraulic classification swirler in step a；Point
Overflow material input floatation system after Ji carries out flotation to reclaim cleaned coal, and underflow materials inputs TBS separator；
C. by hindered falling principle and the effect of autogenous medium, TBS separator in step b from hydraulic classifier
Underflow materials sorts, the underflow materials input sieve bend after sorting, the overflow material input concentrate cyclone group after sorting；
D. underflow materials from TBS separator in step c is dehydrated by sieve bend, the undersize material input after dehydration
Raw coal desliming screen uses as water spray, on-the-sieve material input high-frequency screen；
E. on-the-sieve material from sieve bend in step d is dehydrated by high-frequency screen, and the undersize material input after dehydration is former
Coal desliming screen uses as water spray, and on-the-sieve material (coal in i.e.) enters into product storehouse；
F. overflow material from TBS separator in step c is carried out concentrating classification, the end after classification by concentrate cyclone group
Stream material input DERRICK high frequency vibrating fine screen, overflow material input floatation system carries out flotation to reclaim cleaned coal；
Underflow materials from concentrate cyclone group in step f is sorted by g.DERRICK high frequency vibrating fine screen, sorting
After undersize material input floatation system carry out flotation to reclaim cleaned coal, on-the-sieve material inputs pressing filter；
H. from the oversize of DERRICK high frequency vibrating fine screen during pressing filter is under the effect of pressure differential to step g
Material dehydration, the solid particle (i.e. cleaned coal) after dehydration enters into product storehouse, and filtrate input floatation system carries out flotation to reclaim essence
Coal.
In above-mentioned processing step, the moisturizing pipeline not indicated and step are the routine techniquess of this system, the most superfluous at this
State.
System as in Figure 2-4, mud thin to 0.25mm height ash has separating effect, can effectively reduce in fine cleaned coal product
Ash, it is ensured that fine cleaned coal product meets quality standard.
Wherein, in Fig. 1-4 "+" representing underflow materials or on-the-sieve material, "-" represents overflow material or undersize material.
Claims (6)
1. ash system drops in the one kind high ash coarse slime degree of depth, it is characterised in that drops ash system before including selecting after fall ash system, choosing and floats
Select system；
Drop ash system before described choosing to include:
Hydraulic classification swirler group: for the high ash coarse slime of input is carried out classification；Described hydraulic classification swirler group includes
At least one hydraulic classification swirler；
Hydraulic classifier: for classification will be carried out from the underflow materials of described hydraulic classification swirler group；
TBS separator: for sorting from the underflow materials of described hydraulic classifier；
Drop ash system after described choosing to include:
Sieve bend: for being dehydrated from the underflow materials of described TBS separator；
High-frequency screen: for being dehydrated to obtain middle coal to the on-the-sieve material from described sieve bend；
Concentrate cyclone group: for the overflow material from described TBS separator being carried out concentration classification；Described concentrate cyclone
Group includes at least one concentrate cyclone；
High frequency vibrating fine screen: for sorting from the underflow materials of described concentrate cyclone group；
Pressing filter, for carrying out being dehydrated to obtain cleaned coal by the on-the-sieve material from described high frequency vibrating fine screen；
Described floatation system is for from described hydraulic classification swirler group, described hydraulic classifier and described concentrate cyclone
The overflow material of group, from the undersize material of described high frequency vibrating fine screen, and is carried out from the filtrate of described pressing filter
Flotation is to reclaim cleaned coal.
High ash coarse slime degree of depth fall ash system the most according to claim 1, it is characterised in that described high ash coarse slime is former
The undersize material of coal desliming screen.
High ash coarse slime degree of depth fall ash system the most according to claim 2, it is characterised in that from the sieve of described sieve bend
Lower material is used as the water spray of described raw coal desliming screen.
High ash coarse slime degree of depth fall ash system the most according to claim 2, it is characterised in that from the sieve of described high-frequency screen
Lower material is used as the water spray of described raw coal desliming screen.
5. according to the high ash coarse slime degree of depth fall ash system described in any one of claim 1-4, it is characterised in that described waterpower is divided
The top discharge scalable of level machine.
6. according to the high ash coarse slime degree of depth fall ash system described in any one of claim 1-4, it is characterised in that described high frequency vibrating
Dynamic dusting cover is DERRICK high frequency vibrating fine screen.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107638951A (en) * | 2017-10-09 | 2018-01-30 | 冯爱成 | Apparatus for ash drops in a kind of fine coal slurry desliming |
| CN111434387A (en) * | 2019-01-15 | 2020-07-21 | 华北理工大学 | Beneficiation method for extracting low-ash clean coal from coal slime step by step |
| CN112371324A (en) * | 2020-09-21 | 2021-02-19 | 新汶矿业集团有限责任公司洗煤分公司 | Efficient coarse slime separation process |
| CN113413999A (en) * | 2021-06-28 | 2021-09-21 | 中国水利水电第九工程局有限公司 | Online intelligent detection control technology for quality of semi-finished product in grit coarse crushing production workshop |
| CN114534927A (en) * | 2022-01-14 | 2022-05-27 | 淮北矿业股份有限公司 | Separation process for reducing sulfur and ash in coal |
| CN114653474A (en) * | 2022-05-05 | 2022-06-24 | 山东博选矿物资源技术开发有限公司 | Coal slime water deep upgrading process |
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2016
- 2016-06-20 CN CN201620607586.2U patent/CN205797474U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107638951A (en) * | 2017-10-09 | 2018-01-30 | 冯爱成 | Apparatus for ash drops in a kind of fine coal slurry desliming |
| CN111434387A (en) * | 2019-01-15 | 2020-07-21 | 华北理工大学 | Beneficiation method for extracting low-ash clean coal from coal slime step by step |
| CN111434387B (en) * | 2019-01-15 | 2022-02-11 | 华北理工大学 | Beneficiation method for extracting low-ash clean coal from coal slime step by step |
| CN112371324A (en) * | 2020-09-21 | 2021-02-19 | 新汶矿业集团有限责任公司洗煤分公司 | Efficient coarse slime separation process |
| CN113413999A (en) * | 2021-06-28 | 2021-09-21 | 中国水利水电第九工程局有限公司 | Online intelligent detection control technology for quality of semi-finished product in grit coarse crushing production workshop |
| CN113413999B (en) * | 2021-06-28 | 2022-06-28 | 中国水利水电第九工程局有限公司 | On-line intelligent detection control method for quality of semi-finished product in grit coarse crushing production workshop |
| CN114534927A (en) * | 2022-01-14 | 2022-05-27 | 淮北矿业股份有限公司 | Separation process for reducing sulfur and ash in coal |
| CN114653474A (en) * | 2022-05-05 | 2022-06-24 | 山东博选矿物资源技术开发有限公司 | Coal slime water deep upgrading process |
| CN114653474B (en) * | 2022-05-05 | 2024-02-06 | 陕西博选科技有限公司 | Deep upgrading technology for slime water |
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