CN105709941B - A kind of width grade coal slime floating process - Google Patents
A kind of width grade coal slime floating process Download PDFInfo
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- CN105709941B CN105709941B CN201610224983.6A CN201610224983A CN105709941B CN 105709941 B CN105709941 B CN 105709941B CN 201610224983 A CN201610224983 A CN 201610224983A CN 105709941 B CN105709941 B CN 105709941B
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- flotation
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- 239000003245 coal Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title claims abstract description 25
- 238000007667 floating Methods 0.000 title claims abstract description 15
- 238000005188 flotation Methods 0.000 claims abstract description 77
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 239000004088 foaming agent Substances 0.000 claims abstract description 5
- 230000002452 interceptive effect Effects 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000003250 coal slurry Substances 0.000 claims description 7
- 230000002209 hydrophobic effect Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 9
- 238000005187 foaming Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 5
- 239000002956 ash Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/006—Hydrocarbons
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/04—Frothers
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/08—Coal ores, fly ash or soot
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a kind of wide grade coal slime floating process, it includes ore pulp preparation work, high-pressure jet operation, defoaming operation and carries out flotation operation in bed self-loopa flotation column is interfered.By increasing de-foaming process after self-suction microbubble generator, nonactive bubble is removed by defoaming operation, excessive bubble is avoided to enter interference bed self-loopa flotation column and forms blocked up froth bed, eliminate influence of the nonactive bubble to follow-up separation, suitable common blister is introduced by the bubble generator for interfering bed self-loopa flotation column as needed, the dosage of control foaming agent reaches suitable ratio to adjust common blister and active air bubble, so as to improve flotation efficiency to the full extent.
Description
Technical field
The present invention relates to coal slime flotation technical field more particularly to a kind of wide grade coal slime floating process.
Background technology
Flotation at present is that the main method of sorting recycling is carried out to coal slime, it is according to coal and the difference of spoil surface wettability
Not, under the action of floating agent, the cleaned coal in coal slime is recycled.But since peel force is big after coarse grain bubbles attached and passes
The turbulent environment of height of system agitation impeller flotator, the flotation effect for leading to coarse grain is bad, and the upper limit is usually no more than 0.5mm.For
It solves the problems, such as the sorting of coarse slime, improves coal slime flotation upper size boundary, flotation efficiency must be substantially reduced, both thinking in raising
Coal slime under conditions of guaranteed efficiency, just can only be first classified by limit again, coarse slime enter gravity separation technology (such as spiral chute,
TBS, cyclone etc.), fine coal slurry enters floatation process, forms weight-floating process integration and coal slime is handled, cause slime separation
Complex process, process procedure is more, increases production and management cost.
Applicant once applied for a kind of interference bed-self-loopa flotation column (publication number CN203044172U), the flotation column
By introducing upper up-flow so that for ore particle by a upward active force, covert reduces drag of the bubble to ore particle, so as to
The desorption probability of bubble and ore particle is reduced, sorting upper size boundary can improve the granularity model for 1.5-2mm, effectively having widened flotation
It encloses.But applicant has found during the practical application flotation unit, the bubble-ore particle condensate formed in interference bed,
Bed is interfered being detached from, during floating up to froth bed, more careless particle water falls off phenomenon, this explanation is in interference bed
It is interior, bubble-ore particle condensate can be formed by the bridging effect of more careless particle water, but condensate and insecure, that is,
It says, if it is possible to strengthen the polymeric firmness of bubble-ore particle, it is possible to further improve flotation upper size boundary.
Occurs a kind of self-suction microbubble generator currently on the market, it is by nozzle, air chamber, trunnion and diffuser group
Into being currently used primarily in flotation column.The active air bubble that self-suction microbubble generator is formed by high-pressure jet has and preferentially exists
The property that hydrophobic solid surface is precipitated, thus, active air bubble will be precipitated in strong hydrophobic coal slime surface；Due to the attached of bigger
Contact area, coal slime particle is more direct than particle more firm with common blister attachment by the attachment of active air bubble and common blister
Gu, that is to say, that if can the hydrophobic granule of the active microvesicle in surface be fed interference bed-self-loopa flotation column, will have
Conducive to the polymeric firmness of bubble-ore particle is improved, so as to further improve flotation upper size boundary.
Invention content
In order to overcome, flotation grade existing for existing coal slime floating process is narrow, upper size boundary is low, complex process and flotation
The technological deficiency that upper size boundary and flotation efficiency cannot be taken into account simultaneously, the present invention provide a kind of wide grade coal slime floating process.
In order to achieve the above objectives, the technical solution adopted by the present invention is that：
A kind of width grade coal slime floating process, is prepared, high-pressure jet, defoaming and four Partial Jobs of flotation are formed by ore pulp,
It is as follows：
The first step：Ore pulp preparation work
Ore pulp preparation work is carried out using agitator, enters float coal mud and enters agitator, while add in coal slime flotation collector
(hydrocarbon ils such as kerosene, diesel oil) enter float coal mud after ore pulp preparation work and flotation collector fully act on, are caught by stirring realization
Dispersion of the agent in ore pulp is received, enhances the hydrophobicity on coal slime surface；
The addition of collecting agent preferably 0.5~5kg/t delivering dry coal slurries, stir and evenly mix the time preferably 1~3 minute；
Second step：High-pressure jet operation
Ore pulp after stirring and evenly mixing feeds self-priming microbubble generator by pumping, and ore pulp is filled from self-priming microvesicle
It postpones, forms the strong hydrophobic coal slime that surface carries active air bubble；
Above-mentioned pumping pressure is preferably 0.05~0.3MPa.
Third walks：Defoam operation
The ore pulp discharged by microvesicle generators enters defoaming agitator, ensures the mixing time of 2 minutes or more, passes through stirring
The nonactive microvesicle in ore pulp is eliminated in effect, realizes defoaming；
4th step：Flotation is carried out in interference bed-self-loopa flotation column
Ore pulp after defoaming feeds interference bed-self-loopa flotation column, by the bubble for interfering bed-self-loopa flotation column
Generating means adds in foaming agent, and cleaned coal and tail coal are obtained respectively by flotation, and the ratio of frother dosages and collector dosage is
0.05~0.1, frother dosages are determined according to coal quality property in practical application.
The present invention grading principle be：
First, enter float coal mud after ore pulp preparation work and flotation collector fully act on, enhance dredging for coal slime surface
It is aqueous；Then, the ore pulp high pressure after stirring and evenly mixing feeds self-suction microbubble generator, and self-suction microbubble generator is by nozzle, sky
Gas chamber, trunnion and diffuser composition, ore pulp is sprayed from nozzle at high speeds, and into trunnion, high-speed jet makes air chamber generate negative pressure, from
And by external from sucking air, gas, liquid, solid three-phase is vigorously mixed in trunnion, and portion of air is ground into bubble, with solid
Mineralization occurs for particle, and another part air is dissolved in due to high pressure in ore pulp；When ore pulp enters diffuser, pressure drops suddenly
Low, the air that ore pulp is dissolved in trunnion is precipitated again with pressure reduction, becomes a kind of active microvesicle, and activity is micro-
Bubble has the property being preferentially precipitated on hydrophobic solid surface, thus, active air bubble will be precipitated in strong hydrophobic coal slime surface；By micro-
The ore pulp of bubble generator discharge enters defoaming agitator, constant in pressure since the active air bubble of the surface of solids is once precipitation
In the case of, it is not easy to be destroyed, is to eliminate the nonactive microvesicle in ore pulp by stirring action one therefore, second is that avoiding excessive
Bubble enters interference bed-self-loopa flotation column and forms blocked up froth bed, is unfavorable for the flotation of coarse grain coal slime.Surface, which has, lives
Property microvesicle coal slime particle be advantageous to interference bed-self-loopa flotation column in formed bubble-ore particle condensate, will be into one
Step improves the flotation upper size boundary of interference bed-self-loopa flotation column, so as to fulfill wide grade flotation.
The positive effect of the present invention is：
1st, since coarse slime flotation needs to introduce bubble, Flotation Mechanism is：The bubble of introducing and mineral formation bubble-ore particle
Condensate so that ore particle is by a upward active force, and covert reduces drag of the bubble to ore particle, so as to reduce gas
The desorption probability of bubble and ore particle, improves sorting upper size boundary, has effectively widened the particle size range of flotation.It is affected by this, ability
Field technique personnel are mistakenly considered just to must be introduced into a large amount of bubble to improve sorting upper size boundary, hardly realize, are fed in raw material dry
Before disturbing bed-self-loopa flotation column, using self-suction microbubble generator, active air bubble is not only formed, while can also be generated big
Nonactive bubble is measured, the introducing of active bubble is helpful to improving sorting upper size boundary, and the introducing of a large amount of nonactive bubbles is not
But do not help, and nonactive bubble feeds interference bed-self-loopa flotation column, it will thicker bubble is generated in flotation column
Foam layer, froth bed is thicker, and secondary enrichment more easily causes coarse granule and comes off, and influences head coal product quality and coal yield, this is just
Cause to take into account simultaneously in this field flotation upper size boundary and flotation efficiency.The present invention by self-suction microbubble generator it
After increase de-foaming process, remove nonactive bubble by defoaming operation, excessive bubble avoided to enter interference bed-self-loopa flotation
Column forms blocked up froth bed, eliminates influence of the nonactive bubble to follow-up separation, by interfering bed-self-loopa flotation column
Bubble generator introduces suitable common blister as needed, and the dosage of foaming agent is controlled to adjust common blister and active air bubble
Reach suitable ratio, so as to improve flotation efficiency to the full extent.
2nd, the present invention improves flotation upper size boundary again under the premise of flotation efficiency is not reduced, and increased de-foaming process is not
Any big equipment is needed, is only stirred in agitator, it is not only easy to operate easy to implement, and be less added to
This, relative to existing heavy-floating joint slime separation technique, reduces technological operation link, reduces production and management cost；
Relative to existing interference bed-self-loopa flotation column, flotation upper size boundary greatly improves, with traditional coal slime floating process phase
Than for the present invention under the premise of ensureing that floatation clean coal ash content is basically unchanged, flotation upper size boundary can reach 5-6mm, flotation essence
Coal yield will also improve therewith, achieve unexpected effect, have creative as defined in the 3rd section of the 22nd article of Patent Law.
Specific embodiment
The technical solution further illustrated the present invention with reference to specific embodiment.
Certain Oversized Coking Coal Cleaning Plant coal slime ash content is 26.11%, and maximum particle size 6-7mm, granularmetric composition is shown in Table 1.By coal slime
Agitator of sizing mixing is fed, while adds in collecting agent (diesel oil) and sizes mixing, collector dosage is 1.5kg/t delivering dry coal slurries, during stirring
Between be 3 minutes；Ore pulp after stirring and evenly mixing feeds self-priming microvesicle with the pressure of 0.25Mpa by high-pressure spray pump and fills
It puts, the ore pulp discharged by microvesicle generators enters defoaming agitator, stirs 2 minutes and defoams；Ore pulp after defoaming feeds interference bed
Layer-self-loopa flotation column adds in foaming agent (No. 2 oil), blistering by the bubble generator for interfering bed-self-loopa flotation column
Agent dosage is 0.1kg/t delivering dry coal slurries, obtains cleaned coal after sorting and tail coal, separation index are shown in Table 1.For the ease of comparing, directly adopt
Flotation has been carried out respectively to the coal slime with traditional flotation device and interference bed-self-loopa flotation column, best collector dosage and has been risen
Infusion dosage is respectively 1.5kg/t delivering dry coal slurries and 0.15kg/t delivering dry coal slurries, and separation results are also found in table 2.For intuitively comparing three
The sorting upper size boundary of kind flotation mode, the granularmetric composition for the floatation clean coal that three kinds of flotation modes are obtained are listed in table 3.
From table 2 it can be seen that sorted using present invention process to the coal slime, can obtain clean coal yield 72.14%,
The separation index of cleans ash 9.12%, combustible recovery 88.73%；And directly using traditional flotation device and interference bed-
Self-loopa flotation column sorts the coal slime, although comparable cleans ash can be obtained, clean coal yield is far below this hair
Bright technique.From table 3, it is apparent that traditional flotation device flotation upper size boundary is 0.5-1mm, bed-self-loopa flotation is interfered
The sorting upper size boundary of column is 2-3mm, and present invention process can improve the sorting upper limit to 6mm or so, significantly improve thick
The recovering effect of grade coal slime, so as to which the whole separating effect for making present invention process is embodied compared to traditional floatation process equipment
Apparent advantage.
Therefore, present invention process is when sorting coal slime, compared with traditional floatation process equipment, can ensure cleaned coal
Under the premise of product quality, the sorting upper limit is greatly improved, obtains higher clean coal yield, simplifies slime separation technique, effectively
Improve flotation efficiency.
1 slime size of table forms
| Grade/mm | Yield/% | Accumulation/% on sieve | Lower accumulation/the % of sieve |
| -7+6 | 1.99 | 1.99 | 100.00 |
| -6+3 | 12.23 | 14.22 | 98.01 |
| -3+2 | 20.04 | 34.26 | 85.78 |
| -2+1 | 21.63 | 55.89 | 65.74 |
| -1+0.5 | 20.77 | 76.67 | 44.11 |
| -0.5+0.3 | 8.27 | 84.93 | 23.33 |
| -0.3+0.15 | 6.85 | 91.78 | 15.07 |
| -0.15+0.074 | 4.90 | 96.68 | 8.22 |
| -0.074 | 3.32 | 100.00 | 3.32 |
| It is total | 100.00 | - | - |
2 flotation experimental results of table
| Technique | Clean coal yield/% | Cleans ash/% | Combustible recovery/% |
| Present invention process | 72.14 | 9.12 | 88.73 |
| Interfere bed-self-loopa flotation column | 56.97 | 9.09 | 70.09 |
| Flotation device | 17.42 | 9.14 | 21.42 |
3 floatation clean coal granularmetric composition of table
Claims (2)
1. a kind of width grade coal slime floating process, which is characterized in that it be prepared by ore pulp, high-pressure jet, defoaming and flotation four
Partial Jobs form, and are as follows：
The first step：Ore pulp preparation work
Ore pulp preparation work is carried out using agitator, enters float coal mud and enters agitator, while add in coal slime flotation collector, enter floating
Coal slime realizes dispersion of the collecting agent in ore pulp after ore pulp preparation work and flotation collector fully act on, by stirring, by force
The hydrophobicity on coal slime surface is changed；
（2）High-pressure jet operation
Ore pulp after stirring and evenly mixing feeds self-priming microbubble generator by pumping, and ore pulp goes out from self-priming microbubble generator
After coming, the strong hydrophobic coal slime that surface carries active air bubble is formed；
（3）Defoam operation
The ore pulp discharged by microvesicle generators enters defoaming agitator, ensures the mixing time of 2 minutes or more, passes through stirring action
Nonactive microvesicle in ore pulp is eliminated, realizes defoaming；
（4）Flotation is carried out in bed-self-loopa flotation column is interfered
Ore pulp after defoaming feeds interference bed-self-loopa flotation column, is occurred by the bubble for interfering bed-self-loopa flotation column
Device adds in foaming agent, and cleaned coal and tail coal are obtained respectively by flotation.
2. width grade coal slime floating process as described in claim 1, which is characterized in that
In the first step, the addition of the collecting agent is 0.5~5kg/t delivering dry coal slurries, and it is 1~3 minute to stir and evenly mix the time；
In second step, pumping pressure is 0.05~0.3MPa；
In 4th step, the ratio of frother dosages and collector dosage is 0.05~0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224983.6A CN105709941B (en) | 2016-04-12 | 2016-04-12 | A kind of width grade coal slime floating process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224983.6A CN105709941B (en) | 2016-04-12 | 2016-04-12 | A kind of width grade coal slime floating process |
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| Publication Number | Publication Date |
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| CN105709941A CN105709941A (en) | 2016-06-29 |
| CN105709941B true CN105709941B (en) | 2018-06-15 |
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| CN201610224983.6A Expired - Fee Related CN105709941B (en) | 2016-04-12 | 2016-04-12 | A kind of width grade coal slime floating process |
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| CN109759241B (en) * | 2019-01-31 | 2019-11-29 | 中国矿业大学 | A kind of device and method of width particle size fraction coal slime flotation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306398A (en) * | 2007-05-15 | 2008-11-19 | 上海大屯能源股份有限公司 | Microbubble swirl separation method and divice |
| CN101362118A (en) * | 2008-09-17 | 2009-02-11 | 中南大学 | Flotation column pulp quadric mineralising method |
| CN102228871A (en) * | 2011-06-08 | 2011-11-02 | 太原艾柯夫选煤技术有限公司 | Coal slime pressurizing floating method |
| CN102716814A (en) * | 2012-06-26 | 2012-10-10 | 中国矿业大学 | Novel flotation column serial connection test system for improving flotation granularity upper limit |
| CN203044172U (en) * | 2013-01-25 | 2013-07-10 | 山东科技大学 | Interference bed self-circulation flotation column |
| CN203484233U (en) * | 2013-09-10 | 2014-03-19 | 中国矿业大学 | Pre-floating type rotational flow microbubble flotation column separation equipment |
| CN203565186U (en) * | 2013-07-05 | 2014-04-30 | 安徽理工大学 | Microbubble impulsive motion liquid-solid fluidized bed coarse coal slime sorting machine |
-
2016
- 2016-04-12 CN CN201610224983.6A patent/CN105709941B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306398A (en) * | 2007-05-15 | 2008-11-19 | 上海大屯能源股份有限公司 | Microbubble swirl separation method and divice |
| CN101362118A (en) * | 2008-09-17 | 2009-02-11 | 中南大学 | Flotation column pulp quadric mineralising method |
| CN102228871A (en) * | 2011-06-08 | 2011-11-02 | 太原艾柯夫选煤技术有限公司 | Coal slime pressurizing floating method |
| CN102716814A (en) * | 2012-06-26 | 2012-10-10 | 中国矿业大学 | Novel flotation column serial connection test system for improving flotation granularity upper limit |
| CN203044172U (en) * | 2013-01-25 | 2013-07-10 | 山东科技大学 | Interference bed self-circulation flotation column |
| CN203565186U (en) * | 2013-07-05 | 2014-04-30 | 安徽理工大学 | Microbubble impulsive motion liquid-solid fluidized bed coarse coal slime sorting machine |
| CN203484233U (en) * | 2013-09-10 | 2014-03-19 | 中国矿业大学 | Pre-floating type rotational flow microbubble flotation column separation equipment |
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