CN114939483A - Fine hematite dressing method - Google Patents
Fine hematite dressing method Download PDFInfo
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- CN114939483A CN114939483A CN202210684544.9A CN202210684544A CN114939483A CN 114939483 A CN114939483 A CN 114939483A CN 202210684544 A CN202210684544 A CN 202210684544A CN 114939483 A CN114939483 A CN 114939483A
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- hematite
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- 229910052595 hematite Inorganic materials 0.000 title claims abstract description 38
- 239000011019 hematite Substances 0.000 title claims abstract description 38
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005188 flotation Methods 0.000 claims abstract description 46
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000010419 fine particle Substances 0.000 claims abstract description 31
- 229910052742 iron Inorganic materials 0.000 claims abstract description 20
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 20
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 9
- 229920002472 Starch Polymers 0.000 claims abstract description 6
- 239000008107 starch Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 34
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 claims description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000003112 inhibitor Substances 0.000 abstract description 3
- 239000003623 enhancer Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 235000019698 starch Nutrition 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 238000005054 agglomeration Methods 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 230000002000 scavenging effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/025—Froth-flotation processes adapted for the flotation of fines
-
- 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
- B03D1/01—Organic compounds containing nitrogen
-
- 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
- B03D1/028—Control and monitoring of flotation processes; computer models therefor
-
- 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
- B03D1/08—Subsequent treatment of concentrated product
-
- 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
- B03D3/00—Differential sedimentation
- B03D3/06—Flocculation
-
- 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
- B03D2201/005—Dispersants
-
- 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
- B03D2201/06—Depressants
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention relates to a method for dressing superfine particle hematite, which comprises the steps of adding low molecular weight sodium polyacrylate to disperse the superfine particles agglomerated together, then adding a small amount of high molecular weight sodium polyacrylate to selectively flocculate the hematite into large particles, wherein the sodium polyacrylate has an inhibiting effect on the hematite and can be used as an enhancer of starch inhibitor to facilitate subsequent flotation. And finally, realizing the high-efficiency separation of the hematite containing the micro-fine particles by a one-coarse-one-fine-three-scavenging reverse flotation process. Compared with the existing flotation method, the micro-fine particle hematite dressing method provided by the invention recovers micro-fine particle hematite which cannot be recovered by the existing flotation method, improves the recovery rate of hematite while ensuring the concentrate grade, and has important significance for efficient utilization of micro-fine particle iron ore resources.
Description
Technical Field
The invention relates to the technical field of mineral processing, in particular to a method for dressing micro-fine hematite.
Background
China is a big iron ore resource country, the resource reserve reaches 841 hundred million tons, but more than 97 percent of China is lean iron ore, and the utilization rate of the iron ore resource in China is only 10 percent due to low ore grade, complex mineral composition, fine disseminated granularity and the like. Therefore, a large amount of iron ore is imported from abroad every year, the external dependence degree is as high as more than 85%, no speaking right exists in iron ore market pricing, and the development of the domestic iron and steel industry is severely restricted. The green and efficient development and utilization of the huge lean iron ore resources in China are realized and are raised as the national strategy.
Along with the continuous development and utilization of iron ore resources, the characteristics of poor quality, fineness and impurity of iron ore are more and more prominent, and in order to select iron ore concentrate for industrial application, the ore needs to be ground to be very fine so as to realize the monomer dissociation of useful minerals, and a great amount of secondary slime is generated in the process. At present, many mine enterprises need to grind iron ore to below 44 μm, which results in the appearance of many micro-fine ore with-20 μm or even-10 μm size fraction, and the micro-fine ore consumes too much flotation reagent in flotation due to light weight and large specific surface area, is easy to generate heterogeneous agglomeration and is carried into tailings, so that the existing method is difficult to realize the recovery of the micro-fine ore, and the flotation index is seriously influenced. In order to reduce the influence of the enterprises on flotation indexes, the enterprises directly take the enterprises as tailings to discard the tailings, so that the serious waste of resources is caused.
Disclosure of Invention
The invention aims to solve the problems that the flotation reagent dosage and heterogeneous agglomeration of micro-fine particle hematite are greatly increased in the reverse flotation process, and the micro-fine particle hematite is easily carried into tailings to influence the flotation index, and provides a beneficiation method of the micro-fine particle hematite, which aims to ensure that the micro-fine particle hematite is agglomerated in the same phase and enhance the hydrophilicity of the hematite agglomeration through the dispersion-flocculation effect after selective adsorption of an inhibitor, further reduce the adverse effect of the micro-fine particle hematite on the reverse flotation process, improve the recovery rate and grade of iron in iron ore concentrate, and have important significance for efficiently recovering the micro-fine particle hematite.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for dressing micro-fine particle hematite comprises the following steps:
1) mixing a to-be-treated ore sample containing micro-fine-particle-grade hematite with water, adding the mixture into an XFD type single-tank flotation machine, stirring for 3-5 min, adding a pH regulator into ore pulp to enable the pH value to be 11-12, and stirring for 3-5 min;
2) adding 80-100 g/t of low-molecular-weight sodium polyacrylate into the pulp obtained in the step 1), stirring for 3-5 min, then adding 60-100 g/t of high-molecular-weight sodium polyacrylate, stirring for 3-5 min, then adding 600-1000 g/t of alpha-starch, stirring for 3-5 min, and then adding 400-600 g/t of activating agent CaCl 2 Stirring for 3-5 min, and finally adding 500-800 g/t of collecting agent sodium oleate and stirring;
3) and (3) carrying out a primary-coarse-fine-three-scavenging reverse flotation test on the ore pulp obtained in the step 2), wherein the using amount of a collecting agent sodium oleate in the primary flotation test is 2-4 times that of a selected collecting agent, and no medicament is added in the scavenging process.
In the step 1), the hematite containing the fine particle fraction means that the content of-0.044 mm in the particle size of the material is more than 90% by grinding, and the content of-0.020 mm in the particle size of the material is more than 30%.
In the step 1), the total iron grade of the ore sample to be processed is 40-50%, and the ore sample is natural ore or artificial mixed ore.
In the step 1), the concentration of the ore pulp is 25-35%, the concentration of the ore pulp refers to the mass percentage of solids in the ore pulp, the pH regulator is a sodium hydroxide solution with the concentration of 1-5 wt%, and the stirring speed of the flotation machine is 1800-2000 rpm.
In the step 2), the molecular weight of the low-molecular sodium polyacrylate is 1000-5000, the molecular weight of the high-molecular sodium polyacrylate is 200-300 ten thousand, the low-molecular sodium polyacrylate and the high-molecular sodium polyacrylate are added in sequence, and the stirring speed of the flotation machine is 1800-2000 rpm.
In the step 3), the reverse flotation process adopts a coarse-fine three-sweep open-circuit experiment or a coarse-fine three-sweep closed-circuit experiment.
Compared with the prior art, the invention has the beneficial effects that:
because the micro-fine particle hematite has light weight and large specific surface area, a large amount of flotation reagents are consumed in the flotation process, and heterogeneous agglomeration and entrainment are easy to occur in tailings, thereby seriously influencing the flotation index. The method provided by the invention firstly disperses the agglomerated micro-fine particles by adding the low-molecular-weight sodium polyacrylate, then adds a small amount of high-molecular-weight sodium polyacrylate to selectively flocculate the hematite into large particles, and the sodium polyacrylate can be used as an enhancer of inhibitor starch and is beneficial to subsequent flotation. And finally, realizing the high-efficiency separation of the hematite containing the micro-fine particles by a one-coarse-one-fine-three-scavenging reverse flotation process. Compared with the existing flotation method, the micro-fine particle hematite dressing method provided by the invention recovers micro-fine particle hematite which cannot be recovered by the existing flotation method, improves the recovery rate of hematite while ensuring the concentrate grade, and has important significance for efficient utilization of micro-fine particle iron ore resources. Meanwhile, the problem of consumption of a large amount of flotation reagents caused by large specific surface area of micro-fine particles is solved, and water pollution caused by the flotation reagents is reduced. In addition, the flocculation reduces the circulating accumulation of micro-fine particles in the whole flotation system, reduces the system pressure and improves the production efficiency.
Drawings
FIG. 1 is a flow chart of a coarse-fine-three-scan open circuit of the present invention;
FIG. 2 is a flow chart of a coarse-fine three-pass closed circuit of the present invention.
Detailed Description
The following further describes embodiments of the present invention in conjunction with the attached figures:
the hematite ore containing micro-fine particles selected in the embodiment of the invention is obtained from Anshan Liaoning, the total iron grade in the ore is 45% -50%, the gangue mineral is mainly quartz, and the content of the ore particle size is 85% -95% of minus 44 μm.
Example 1:
referring to fig. 1, the total iron grade of hematite containing micro-fine particles selected in the embodiment is 48.50%, the gangue minerals are mainly quartz, the ore granularity is-44 μm and the content is 90%, and a one-coarse one-fine three-sweep reverse flotation open-circuit process flow is adopted.
1) 200g of a sample to be treated containing the hematite of the fine particle fraction is mixed with water, the mixture is added into an XFD type single-tank flotation machine with the volume of 500ml, the concentration of the pulp is adjusted to be about 30 percent, the mixture is fully stirred for 3min under the condition that the stirring rotating speed is 1992rpm, a pH adjusting agent is added into the pulp, and the mixture is stirred for 3min with the pH value being 11.5.
2) Adding 80g/t of low-molecular-weight sodium polyacrylate into the pulp obtained in the step 1) and stirring for 3min, then adding 60g/t of high-molecular-weight sodium polyacrylate and stirring for 3min, then adding 650g/t of alpha-starch and stirring for 3min, and then adding 550g/t of activating agent CaCl 2 And stirring for 3min, finally adding 500g/t collecting agent sodium oleate in roughing and stirring for 3min, carrying out flotation for 5min, adding 250g/t collecting agent sodium oleate in concentrating and stirring for 3min, and carrying out flotation for 4 min.
3) Carrying out a coarse-fine three-sweep reverse flotation open circuit test on the ore pulp obtained in the step 2), wherein no medicament is added in the scavenging process.
Finally, the grade of the obtained flotation concentrate is 67.12 percent, and the recovery rate is 70.56 percent.
Example 2:
referring to fig. 2, the total iron grade of hematite containing micro-fine particles selected in the embodiment is 46.70%, the gangue minerals are mainly quartz, the ore granularity is-44 μm and the content is 92%, and a one-coarse-one-fine-three-scavenging reverse flotation closed process flow is adopted.
1) Mixing 200g of ore sample to be treated containing micro-fine-fraction hematite with water, adding into an XFD type single-tank flotation machine with the volume of 500ml, adjusting the concentration of ore pulp to be about 30%, fully stirring for 3min under the condition that the stirring speed is 1992rpm, adding a pH regulator into the ore pulp, and stirring for 3min at the pH value of 11.5;
2) feeding the pulp obtained in step 1)Adding low molecular weight sodium polyacrylate 85g/t and stirring for 3min, adding high molecular weight sodium polyacrylate 70g/t and stirring for 3min, adding alpha-starch 650g/t and stirring for 3min, and adding CaCl as activator 550g/t 2 And stirring for 3min, finally adding 500g/t collecting agent sodium oleate in roughing and stirring for 3min, carrying out flotation for 5min, adding 250g/t collecting agent sodium oleate in concentrating and stirring for 3min, and carrying out flotation for 4 min.
3) Performing a coarse-fine three-scavenging reverse flotation closed circuit test on the ore pulp obtained in the step 2), wherein no chemical is added in the scavenging process. The dosing system in the closed-loop process is the same as that in the step 2).
And finally, the grade of the obtained flotation concentrate is 66.52%, and the recovery rate is 82.12%.
Claims (5)
1. A fine particle hematite dressing method is characterized by comprising the following steps:
1) mixing a to-be-treated ore sample containing micro-fine-fraction hematite with water, adding the mixture into a flotation machine, stirring, adding a pH regulator into ore pulp to enable the pH value to be 11-12, and stirring;
2) adding 80-100 g/t of low-molecular-weight sodium polyacrylate into the pulp obtained in the step 1), stirring, then adding 60-100 g/t of high-molecular-weight sodium polyacrylate, stirring, then adding 600-1000 g/t of alpha-starch, stirring, and then adding 400-600 g/t of activating agent CaCl 2 Stirring, and finally adding 500-800 g/t of collecting agent sodium oleate and stirring;
3) and (3) carrying out a rough-fine-three-sweep reverse flotation test on the ore pulp obtained in the step 2), wherein the using amount of the collecting agent sodium oleate in the rough flotation test is 2-4 times that of the collecting agent in the fine flotation.
2. The method for dressing hematite ore with fine particles according to claim 1, wherein in step 1), the hematite ore containing fine particles is ground to make the content of-0.044 mm in the particle size of the material greater than 90%, and the content of-0.020 mm in the particle size of the material greater than 30%.
3. The method for dressing hematite with fine particles according to claim 1, wherein the total iron grade of the ore sample to be treated in the step 1) is 40-50%.
4. The fine particle hematite dressing method according to claim 1, wherein in the step 1), the pulp concentration is 25% to 35%, the pulp concentration is the mass percentage of solids in the pulp, the pH regulator is 1 wt% to 5 wt% sodium hydroxide solution, and the stirring speed of the flotation machine is 1800 to 2000 rpm.
5. The fine particle hematite dressing method according to claim 1, wherein in the step 2), the molecular weight of the low molecular weight sodium polyacrylate is 1000-5000, the molecular weight of the high molecular weight sodium polyacrylate is 200-300 ten thousand, and the stirring speed of the flotation machine is 1800-2000 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210684544.9A CN114939483B (en) | 2022-06-17 | Fine particle hematite dressing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210684544.9A CN114939483B (en) | 2022-06-17 | Fine particle hematite dressing method |
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| Publication Number | Publication Date |
|---|---|
| CN114939483A true CN114939483A (en) | 2022-08-26 |
| CN114939483B CN114939483B (en) | 2024-06-07 |
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Citations (6)
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|---|---|---|---|---|
| US6068693A (en) * | 1997-06-16 | 2000-05-30 | Ecc International Inc. | Method for separating mixture of finely divided minerals and product thereof |
| JP2007029940A (en) * | 2005-07-28 | 2007-02-08 | Hymo Corp | Dehydration method of sludge |
| CN104066686A (en) * | 2012-01-25 | 2014-09-24 | 索特维尔公司 | Method for dispersing and aggregating components of mineral slurries |
| CN107952593A (en) * | 2017-11-28 | 2018-04-24 | 东北大学 | Micro-size fraction siderite selective flocculation flotation method |
| CN110465404A (en) * | 2018-05-09 | 2019-11-19 | 中国瑞林工程技术有限公司 | The method for handling carbonate containing iron selection tailings |
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|---|---|---|---|---|
| US6068693A (en) * | 1997-06-16 | 2000-05-30 | Ecc International Inc. | Method for separating mixture of finely divided minerals and product thereof |
| JP2007029940A (en) * | 2005-07-28 | 2007-02-08 | Hymo Corp | Dehydration method of sludge |
| CN104066686A (en) * | 2012-01-25 | 2014-09-24 | 索特维尔公司 | Method for dispersing and aggregating components of mineral slurries |
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| CN110465404A (en) * | 2018-05-09 | 2019-11-19 | 中国瑞林工程技术有限公司 | The method for handling carbonate containing iron selection tailings |
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| Title |
|---|
| 卢毅屏，钟宏，黄兴华: "以聚丙烯酸为絮凝剂的细粒黑钨矿絮团浮选", 矿冶工程, no. 01, pages 30 - 33 * |
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