CN105457743A - Beneficiation method of micro-fine particle graphite ores for producing high-carbon graphite - Google Patents
Beneficiation method of micro-fine particle graphite ores for producing high-carbon graphite Download PDFInfo
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- CN105457743A CN105457743A CN201510781644.3A CN201510781644A CN105457743A CN 105457743 A CN105457743 A CN 105457743A CN 201510781644 A CN201510781644 A CN 201510781644A CN 105457743 A CN105457743 A CN 105457743A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 239000010439 graphite Substances 0.000 title claims abstract description 95
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 95
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000010419 fine particle Substances 0.000 title abstract 4
- 239000012141 concentrate Substances 0.000 claims abstract description 42
- 238000000227 grinding Methods 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 40
- 238000002156 mixing Methods 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 11
- 238000004094 preconcentration Methods 0.000 claims description 7
- WVYWICLMDOOCFB-UHFFFAOYSA-N 4-methyl-2-pentanol Chemical compound CC(C)CC(C)O WVYWICLMDOOCFB-UHFFFAOYSA-N 0.000 claims description 5
- 235000009508 confectionery Nutrition 0.000 claims description 5
- 239000002283 diesel fuel Substances 0.000 claims description 4
- 239000003350 kerosene Substances 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000005188 flotation Methods 0.000 abstract description 39
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 39
- 239000003814 drug Substances 0.000 description 17
- 229910052500 inorganic mineral Inorganic materials 0.000 description 12
- 239000011707 mineral Substances 0.000 description 12
- 238000007667 floating Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- -1 polyoxyethylene nonylphenol Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/06—Selection or use of additives to aid disintegrating
-
- 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
- B03D1/018—Mixtures of inorganic and organic compounds
-
- 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
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides a method for beneficiation of micro-fine particle graphite ores to obtain high-carbon graphite. According to the invention, with cooperation of creative and efficient reagent system and economical and environment-friendly beneficiation processes including crushing, grinding, flotation and regrinding, high-carbon graphite concentrate with fixed carbon content of over 95% is selected from micro-fine particle graphite ores with low content and difficulty in treatment, thus solving the difficulty that the high-carbon graphite concentrate cannot be economically and efficiently produced by adopting micro-fine particle graphite resources.
Description
Technical field
The invention belongs to ore dressing field, be specifically related to a kind of beneficiation method of graphite ore.
Background technology
Graphite is a kind of nonmetallic mineral having multiple premium properties, is widely used in the industrial departments such as metallurgy, machinery, oil, chemical industry, light industry and national defence.Therefore, Efficient Development is made good use of existing graphite resource and is had great importance for the high speed development of China's industry.Especially, since the new century, the graphene new material processed by high purity graphite has many very excellent performances,
Microfine graphite ore resource extensively distributes in China, and resource reserve is large, but due to this kind of graphite resource ore dressing difficulty very large, and existing dressing product is of low quality, exploitation few.
Mostly existing high-carbon graphite raw material is that ore dressing is extracted from flaky graphite ore resources, and microfine graphite ore resource can't process high-carbon graphite cost-effectively.
Therefore, a kind of economically viable technical method extracting high-carbon graphite resource from microfine graphite ore of exploitation is needed badly.
Summary of the invention
The present invention is intended to solve existing microfine graphite ore resource and is difficult to through purification by mineral the problem that output exceeds carbon graphite concentrate, research and development microfine graphite ore resource high-efficiency ore-dressing technique, substitute the purifying technique that existing ore dressing-chemical method produces high-carbon graphite concentrate, simplify the technological process of producing high-carbon graphite concentrate, reduce energy consumption and cost, provide a kind of new method for the production and processing of microfine graphite ore resource goes out high-carbon graphite concentrate.
For achieving the above object, invented the beneficiation method that a kind of microfine graphite ore produces high-carbon graphite, be specially:
1, microfine graphite ore is broken, levigate, stir;
2, the ore pulp after step 1 being stirred carries out the flotation operation of graphite mineral, and flotation flowsheet is one roughing once purging selection and a preconcentration, and flotation obtains graphite rough concentrate one and mine tailing one;
3, undertaken dense by step 2 gained graphite rough concentrate, dense rear underflow adds medicament and carries out regrinding one;
4, after step 3 being regrinded, ore pulp adds floating agent and carries out flotation operation after sizing mixing, and flotation flowsheet is that primary cleaning secondary fine is scanned, and flotation obtains graphite rough concentrate two and mine tailing two;
5, undertaken dense by step 4 gained graphite rough concentrate two, dense rear underflow adds medicament and carries out regrinding two;
6, step 5 regrinded and add floating agent after ore pulps after two are sized mixing and carry out flotation operation, flotation flowsheet is recleaning, and flotation obtains graphite rough concentrate three, and the chats of recleaning merges and returns step 4;
7, undertaken dense by step 6 gained graphite rough concentrate three, dense rear underflow adds medicament and carries out regrinding three;
8, step 7 regrinded and add medicament after ore pulps after three are sized mixing and carry out flotation operation, flotation flowsheet is recleaning, and the chats of recleaning merges and returns step 6, and flotation concentrate is high-carbon graphite concentrate after drying after filtration.
Progressive one illustrates: in step 1, mog accounts for 70% ~ 85% for-0.074mm content.
The floating agent that step 2 roughly selects interpolation is 100 ~ 250g/t collecting agent, scans interpolation 30 ~ 50g/t collecting agent, and collecting agent is the confection of the neutral oil such as diesel oil or kerosene, methyl isobutyl carbinol and OP-15, and configuration proportion is 70:25:5; Mixing time is 1min ~ 3min.
Dense operation overflow described in step 3 returns step 1, and thickened underflow concentration is 50% ~ 65%, and the medicament that dense rear underflow adds is NaOH, and dosing is 1000 ~ 3000g/t; An equipment of regrinding is vertical stirring mill, and mog accounts for 80 ~ 90% for-0.023mm content.
Size mixing as adjustment pulp density to 10% ~ 25% described in step 4; Adding medicament is selected interpolation 30 ~ 60g/t collecting agent, and essence scans interpolation 20 ~ 30g/t collecting agent, and essence scans two interpolation 20 ~ 30g/t collecting agents.
Dense operation overflow described in step 5 returns step 4, and thickened underflow concentration is 45% ~ 55%, and the medicament that dense rear underflow adds is NaOH, and dosing is 1000 ~ 3000g/t; Two equipment of regrinding are vertical stirring mill, and mog accounts for 85 ~ 98% for-0.023mm content.
Size mixing as adjustment pulp density to 8% ~ 15% described in step 6; Adding medicament is first time selected interpolation 5 ~ 15g/t collecting agent.
Dense operation overflow described in step 7 returns step 6, and thickened underflow concentration is 40% ~ 50%, and the medicament that dense rear underflow adds is NaOH, and dosing is 1000 ~ 3000g/t; Three equipment of regrinding are vertical stirring mill, and mog accounts for 95 ~ 100% for-0.023mm content.
Size mixing as adjustment pulp density to 6% ~ 12% described in step 8; Adding medicament is first time selected interpolation 5 ~ 15g/t collecting agent.Described high-carbon graphite concentrate is the graphite concentrate that fixed carbon content is greater than 95%.
Graphite rough concentrate is dense and add the object that NaOH carries out regrinding and be: one is that NaOH medicament plays dispersion grind-aiding effect in the process of ore grinding, and higher pulp density of regrinding is conducive to the efficiency improving mechanical ore grinding; Two is after superfine granule gangue mineral that graphite layers is inlayed is dissociated by ore grinding, and containing NaOH effect, enhances dispersiveness and the hydrophily of gangue mineral, improves the separative efficiency of gangue mineral and graphite.
Described collecting agent is the confection of the neutral oil such as diesel oil or kerosene, methyl isobutyl carbinol and OP-15, and configuration proportion is 70:25:5.
The main efficacy results of floating agent collecting agent is: one is that microfine graphite mineral granularity mostly is 5 ~ 15 microns, particulate person is at 5 microns, new and effective polyoxyethylene nonylphenol ether-15 can make microfine graphite dispersion even, avoids heterocoagulation, eliminates being mingled with of graphite and gangue; Two is collecting agents to graphite mineral has good collecting and selective, three's medicament is prepared in proportion, between medicament, synergy is strengthened, increase substantially the selective and rate of recovery of microfine graphite mineral flotation, NaOH dispersion and collecting agent effect under, flotation graphite concentrate fixed carbon content reach 95% and recycling graphite rate raising more than 10%.
Accompanying drawing explanation
Fig. 1 represents the schematic flow sheet of the ore-dressing technique used in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment and comparative example, the invention will be further described.
embodiment 1
Certain microfine crystalline flake graphite ore deposit domestic, from detection data, in raw ore, fixed carbon content is 8.50%, belong to low-grade trickle crystalline flake graphite ore deposit, graphite is main in flakey, tiny tabular output in ore, the graphite mineral disseminated grain size of 90% is below 10 μm, graphite is difficult to complete monomer dissociation, because graphite disseminated grain size is very thin, and the alteration of gangue mineral feldspar is strong, trickle bloodstone, mica are again together with the adhesion of graphite flake intertexture, and make this graphite ore ore dressing difficulty very large, conventional ore-dressing technique can not produce high purity graphite concentrate product.
Raw ore first broken ore grinding accounts for 72% to-0.074mm, stir size mixing to pulp density 35%, pH be 7.2.Ore pulp enters flotation operation after again sizing mixing, and flotation operation is one roughing once purging selection and a preconcentration.Roughly select the collecting agent that 150g/t is first added in operation, stir 2min, flotation time is 5min; First time scans the collecting agent that 60g/t is added in operation, and stir 2min, flotation time is 4min, and preconcentration does not add medicament, and flotation time is 5min.After this operation, obtain graphite rough concentrate and mine tailing one, mine tailing one abandons.Graphite rough concentrate through dense to concentration be 55%, add 1500g/t NaOH after carry out regrinding one.The fineness after an ore grinding of regrinding is 85%-0.023mm, flotation is carried out after readjusting pulp density to 15%, flotation operation is that primary cleaning secondary is scanned, roughly select and add medicament 50g/t collecting agent, scan an interpolation 20g/t collecting agent, scan two interpolation 20g/t collecting agents, obtain graphite concentrate one and mine tailing two, mine tailing two abandons.Graphite concentrate once dense be after 50% to concentration, carry out regrinding two after adding the NaOH of 1500g/t.The fineness after two ore grindings of regrinding is 90%-0.023mm, and carry out flotation after readjusting pulp density to 12%, flotation operation is recleaning, and selected one collecting agent adding 10g/t, obtains graphite concentrate two.Graphite concentrate two through dense be after 45% to concentration, carry out regrinding three after adding the NaOH of 1500g/t.The fineness after three ore grindings of regrinding is 98%-0.023mm, and carry out flotation after readjusting pulp density to 8%, flotation operation is recleaning, and selected one collecting agent adding 10g/t, obtains graphite concentrate.Wherein, described collecting agent is the confection of diesel oil, methyl isobutyl carbinol and OP-15, and configuration proportion is 70:25:5.
Detecting fixed carbon content after the process of flotation graphite concentrate drying is 96.20%, reaches the product standard of high-carbon graphite, and the rate of recovery of fixed carbon is 90.25%.Thus achieve the object processing high-carbon graphite concentrate from the Ultrafine Graphite ore deposit ore dressing of 10 microns.
Table 1 embodiment 1 result of the test (%)
embodiment 2
Thin scale-aphanitic graphite ore deposit, Henan, according to analysis, in raw ore, fixed carbon content is 10.5%, belong to fine scale-aphanitic graphite ore deposit, in raw ore, graphite disseminated grain size is very thin, together with the gangue mineral intertexture adhesions such as graphite flake and quartz, mica, makes this graphite ore ore dressing difficulty very large.This ore adopt conventional ore-dressing technique only can output fixed carbon content about 85% graphite concentrate.
Raw ore first broken ore grinding accounts for 80% to-0.074mm, and it is that 7.5 ore pulps enter flotation operation after again sizing mixing that stirring is sized mixing to pulp density 32%, pH, and flotation operation is one roughing once purging selection and a preconcentration.Roughly select the collecting agent that 500g/t is first added in operation, stir 2min, flotation time is 8min; First time scans the collecting agent that 150g/t is added in operation, and stir 2min, flotation time is 5min, and preconcentration does not add medicament, and flotation time is 8min.After this operation, obtain graphite rough concentrate and mine tailing one, mine tailing one abandons.Graphite rough concentrate through dense to concentration be 50%, add 2500g/t NaOH after carry out regrinding one.The fineness after an ore grinding of regrinding is 90%-0.023mm, flotation is carried out after readjusting pulp density to 20%, flotation operation is that primary cleaning secondary fine is scanned, selected interpolation medicament 100g/t collecting agent, scan an interpolation 50g/t collecting agent, scan two interpolation 50g/t collecting agents, obtain graphite concentrate one and mine tailing two, mine tailing two abandons.Graphite concentrate once dense be after 50% to concentration, carry out regrinding two after adding the NaOH of 2500g/t.The fineness after two ore grindings of regrinding is 90%-0.015mm, and carry out flotation after readjusting pulp density to 15%, flotation operation is recleaning, and selected one collecting agent adding 50g/t, obtains graphite concentrate two.Graphite concentrate two through dense be after 50% to concentration, carry out regrinding three after adding the NaOH of 2500g/t.The fineness after three ore grindings of regrinding is 98%-0.015mm, and carry out flotation after readjusting pulp density to 10%, flotation operation is recleaning, and selected one collecting agent adding 50g/t, obtains graphite concentrate.
Described collecting agent is the confection of kerosene, methyl isobutyl carbinol and OP-15, and allocation ratio is 70:25:5.
Detecting fixed carbon content after the process of flotation graphite concentrate drying is 95.5%, reaches the product standard of high-carbon graphite, and the rate of recovery of fixed carbon is 82.83%.Thus achieve the object processing high-carbon graphite concentrate from thin scale-aphanitic graphite ore deposit ore dressing.
Table 2 embodiment 2 result of the test (%)
Claims (2)
1. microfine graphite ore produces a beneficiation method for high-carbon graphite, it is characterized in that specific as follows:
(1) broken, ore grinding, accounts for 70% ~ 85% by broken for graphite ore ore grinding to-0.074mm content, and stirs;
(2) add 100 ~ 250g/t collecting agent to roughly select, 30 ~ 50g/t collecting agent is scanned, and blank preconcentration once;
(3) preconcentration concentrate carries out dense, densely after adding 1000 ~ 3000g/tNaOH, carries out regrinding one to pulp density 50% ~ 65%, and Regrinding equipment is vertical mixing mill, and mog accounts for 80 ~ 90% for-0.023mm content;
(4) regrind after one, adjustment pulp density to 10% ~ 25%, add 30 ~ 60g/t collecting agent and carry out selected, add 20-30g/t collecting agent and carry out essence and scan one, add 20 ~ 30g/t collecting agent and carry out essence and scan two;
(5) selected concentrate carries out dense, densely after adding 1000 ~ 3000g/tNaOH, carries out regrinding two to pulp density 45% ~ 55%, and Regrinding equipment is vertical mixing mill, and mog accounts for 85 ~ 98% for-0.023mm content;
(6) regrind after two, adjustment pulp density to 8% ~ 15%, add 5 ~ 15g/t collecting agent and carry out selected;
(7) selected concentrate carries out dense, densely after adding 1000 ~ 3000g/tNaOH, carries out regrinding three to pulp density 40% ~ 50%, and Regrinding equipment is vertical mixing mill, and mog accounts for 95 ~ 100% for-0.023mm content;
(8) regrind after three, adjustment pulp density to 8% ~ 15%, add 5 ~ 15g/t collecting agent and carry out selected, obtain high-carbon graphite concentrate.
2. a kind of microfine graphite ore produces the beneficiation method of high-carbon graphite according to claim 1, and it is characterized in that: described collecting agent is the confection of the neutral oil such as diesel oil or kerosene, methyl isobutyl carbinol and OP-15, configuration proportion is 70:25:5.
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Cited By (8)
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| CN106513164A (en) * | 2016-11-09 | 2017-03-22 | 金建工程设计有限公司 | Large-scale crystalline graphite ore flotation fast selecting agent and flotation technology |
| CN107140629A (en) * | 2017-07-12 | 2017-09-08 | 邓功甫 | A kind of preparation method of graphene |
| CN107377200A (en) * | 2017-08-22 | 2017-11-24 | 苏州中材非金属矿工业设计研究院有限公司 | A kind of purification by mineral method of high clay Fine particle processing |
| CN107537696A (en) * | 2017-08-14 | 2018-01-05 | 武汉理工大学 | A kind of Fine particle processing direct reverse flotation purifying technique |
| CN108745656A (en) * | 2018-05-23 | 2018-11-06 | 湖南有色金属研究院 | A method of improving micro-size fraction graphite flotation efficiency |
| CN109604067A (en) * | 2017-12-05 | 2019-04-12 | 湖南有色金属研究院 | A kind of separation method of graphite and mica |
| CN109647630A (en) * | 2018-12-28 | 2019-04-19 | 中建材蚌埠玻璃工业设计研究院有限公司 | A kind of short route method of purification of graphite |
| CN113083493A (en) * | 2021-04-12 | 2021-07-09 | 昆明理工大学 | Microwave roasting pretreatment graphite ore enhanced flotation purification method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513164A (en) * | 2016-11-09 | 2017-03-22 | 金建工程设计有限公司 | Large-scale crystalline graphite ore flotation fast selecting agent and flotation technology |
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| CN107140629A (en) * | 2017-07-12 | 2017-09-08 | 邓功甫 | A kind of preparation method of graphene |
| CN107537696A (en) * | 2017-08-14 | 2018-01-05 | 武汉理工大学 | A kind of Fine particle processing direct reverse flotation purifying technique |
| CN107537696B (en) * | 2017-08-14 | 2019-08-27 | 武汉理工大学 | A kind of Fine particle processing direct-reverse flotation purifying technique |
| CN107377200A (en) * | 2017-08-22 | 2017-11-24 | 苏州中材非金属矿工业设计研究院有限公司 | A kind of purification by mineral method of high clay Fine particle processing |
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| CN109604067A (en) * | 2017-12-05 | 2019-04-12 | 湖南有色金属研究院 | A kind of separation method of graphite and mica |
| CN108745656A (en) * | 2018-05-23 | 2018-11-06 | 湖南有色金属研究院 | A method of improving micro-size fraction graphite flotation efficiency |
| CN109647630A (en) * | 2018-12-28 | 2019-04-19 | 中建材蚌埠玻璃工业设计研究院有限公司 | A kind of short route method of purification of graphite |
| CN109647630B (en) * | 2018-12-28 | 2021-03-23 | 中建材蚌埠玻璃工业设计研究院有限公司 | Short-process purification method of graphite |
| CN113083493A (en) * | 2021-04-12 | 2021-07-09 | 昆明理工大学 | Microwave roasting pretreatment graphite ore enhanced flotation purification method |
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