CN109078761B - Method for reinforcing flotation of refractory nickel sulfide ore by using magnetic hydrophobic particles - Google Patents
Method for reinforcing flotation of refractory nickel sulfide ore by using magnetic hydrophobic particles Download PDFInfo
- Publication number
- CN109078761B CN109078761B CN201811131256.0A CN201811131256A CN109078761B CN 109078761 B CN109078761 B CN 109078761B CN 201811131256 A CN201811131256 A CN 201811131256A CN 109078761 B CN109078761 B CN 109078761B
- Authority
- CN
- China
- Prior art keywords
- flotation
- nickel sulfide
- hydrophobic particles
- concentrate
- dosage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a method for strengthening the flotation of refractory nickel sulfide ore by using magnetic hydrophobic particles, belonging to the technical field of ore dressing. The method grinds nickel sulfide ore with relatively fine embedded particle size, firstly adds conventional reagents for flotation, and then adds ferroferric oxide polydopamine composite particles into tailings for flotation of micro-fine particle nickel sulfide ore which is difficult to recover under conventional flotation conditions. According to the invention, the ferroferric oxide polydopamine composite particles are utilized to strengthen the surface hydrophobicity of the micro-fine particle nickel sulfide minerals, so that the strengthened flotation of the micro-fine particle nickel sulfide minerals is realized, and the ore dressing recovery rate of the micro-fine particle nickel sulfide minerals difficult to treat is improved. The method solves the problem that the recovery rate of the micro-fine particle nickel sulfide mineral is difficult to improve due to small granularity and easy surface oxidation, improves the mineral dressing index of the micro-fine particle nickel sulfide mineral which is difficult to treat, and simultaneously has low cost because the ferroferric oxide polydopamine composite particles can be recovered by a magnetic separator.
Description
Technical Field
The invention relates to the technical field of mineral separation, in particular to a method for strengthening the flotation of refractory nickel sulfide ore by using magnetic hydrophobic particles.
Background
Nickel is an important non-ferrous metal raw material required by the development of high and new technology and national economic construction in China and is called as 'industrial vitamin'. With the rapid development of national economy of China, the demand for nickel is more and more, but nickel resources become leaner, thinner and hybridized day by day, and the efficient recovery of the nickel resources is influenced. Therefore, a new technology for flotation of the micro-fine particle nickel sulfide ore is developed, the high-efficiency recovery of the micro-fine particle nickel sulfide ore is realized, and the method has important significance for realizing the high-efficiency utilization of nickel resources.
The important reason why the fine fraction minerals are difficult to recover by flotation compared to the conventional fraction minerals is that the fine fraction minerals have a small mass, resulting in a small momentum of mineral particles and difficulty in overcoming the energy barrier between the mineral particles and the gas bubbles during collision and failing to adhere to the gas bubbles. In order to improve the flotation recovery rate of the fine-fraction minerals, a great deal of research is carried out by mineral separation workers, and it is found that increasing the apparent particle size of the fine-fraction minerals or reducing the size of air bubbles is an important means for improving the adhesion probability of the fine-fraction minerals and the air bubbles and increasing the flotation recovery rate of the fine-fraction minerals. Based on the above knowledge, the ore dressing workers propose techniques such as hydrophobic agglomeration separation, composite agglomeration separation, selective flocculation separation, nanobubble flotation, electrolytic flotation and the like. Although some fine mineral flotation recovery techniques are applied to individual mines, the flotation recovery problem of fine mineral is not well solved due to the defects of the techniques or the complex properties of ores.
Disclosure of Invention
The invention provides a method for strengthening the flotation of the refractory nickel sulfide ore by utilizing magnetic hydrophobic particles, aiming at solving the technical problem that the recovery rate of the micro-fine nickel sulfide ore is difficult to improve due to small granularity and easy surface oxidation.
The method comprises the following steps:
(1) grinding: grinding the nickel sulfide ore with the embedded grain size to-0.074 mm content accounting for 80% -90% to obtain ore grinding ore pulp;
(2) adding a dispersing agent sodium hexametaphosphate, an inhibitor gum dioscorea batatas, a collecting agent butyl xanthate and a foaming agent MIBC into the ore grinding pulp obtained in the step (1), stirring, mixing, and performing roughing to obtain roughing concentrate and roughing tailings;
(3) adding a collecting agent butyl xanthate and a foaming agent MIBC into the roughed tailings obtained in the step (2) to perform scavenging twice to obtain scavenged middlings and scavenged tailings, and returning the scavenged middlings to the previous stage of operation in sequence;
(4) adding a dispersing agent sodium hexametaphosphate and an inhibitor sweet potato gum into the rough concentration concentrate obtained in the step (2) for three times of concentration to obtain a concentrate 1, and returning the sequence of the concentrated middlings to the previous stage of operation;
(5) adding magnetic hydrophobic particles into the scavenged tailings obtained in the step (3), stirring for 5-10min, and adding 10-20g/t foaming agent MIBC for flotation to obtain concentrate 2 and final tailings; and (4) combining the concentrate 2 and the concentrate 1 obtained in the step (4) into a final concentrate, and recovering the magnetic hydrophobic particles by using a magnetic separator.
In the step (2), the dosage of the sodium hexametaphosphate of the dispersing agent is 300-300 g/t, the dosage of the inhibitor yellow potato gum is 200-300g/t, the dosage of the collecting agent butyl xanthate is 80-100g/t, and the dosage of the foaming agent MIBC is 10-20 g/t.
In the step (3), 40-50g/t of xanthate and 10-20g/t of foaming agent MIBC are added for the first time; and 20-30g/t of xanthate and 10-20g/t of foaming agent MIBC are added in the second scavenging.
The dosage of the sodium hexametaphosphate added for the first selection in the step (4) is 200-150 g/t, and the dosage of the sweet potato gum is 100-150 g/t; the dosage of the sodium hexametaphosphate added for the second selection is 150g/t, and the dosage of the sweet potato gum is 50-80 g/t; and no medicament is added in the third selection.
In the step (5), the magnetic hydrophobic particles are magnetic ferroferric oxide polydopamine composite particles, wherein polydopamine accounts for 50-70% of the total particles by weight.
In the step (5), the using amount of the magnetic hydrophobic particles is 3-10% of the scavenging tailing amount.
In the step (5), the granularity of the magnetic hydrophobic particles is 5-20 mu m.
And (5) the grade of nickel in the final concentrate obtained in the step (5) is more than 6%, and the recovery rate of nickel is more than 80%.
The technical scheme of the invention has the following beneficial effects:
according to the invention, the ferroferric oxide polydopamine composite particles are used for floating the micro-fine nickel sulfide minerals which are difficult to recover under the conventional flotation conditions for the first time, so that the surface hydrophobicity of the micro-fine nickel sulfide minerals is enhanced, and the enhanced flotation of the micro-fine nickel sulfide minerals is realized. Meanwhile, ferroferric oxide polydopamine composite particles can be recovered by a magnetic separator, so that the cost is low, and the method is a stable and efficient method for dressing the nickel sulfide ore with fine particles and difficult treatment.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description is given with reference to specific embodiments.
The invention provides a method for strengthening the flotation of refractory nickel sulfide ore by utilizing magnetic hydrophobic particles, aiming at the technical problem that the existing micro-fine particle nickel sulfide ore is difficult to improve in hydrophobicity due to small particle size and easy surface oxidation.
The method comprises the following specific steps:
(1) grinding: grinding the nickel sulfide ore with the embedded grain size to-0.074 mm content accounting for 80% -90% to obtain ore grinding ore pulp;
(2) adding a dispersing agent sodium hexametaphosphate, an inhibitor gum dioscorea batatas, a collecting agent butyl xanthate and a foaming agent MIBC into the ore grinding pulp obtained in the step (1), stirring, mixing, and performing roughing to obtain roughing concentrate and roughing tailings;
(3) adding a collecting agent butyl xanthate and a foaming agent MIBC into the roughed tailings obtained in the step (2) to perform scavenging twice to obtain scavenged middlings and scavenged tailings, and returning the scavenged middlings to the previous stage of operation in sequence;
(4) adding a dispersing agent sodium hexametaphosphate and an inhibitor sweet potato gum into the rough concentration concentrate obtained in the step (2) for three times of concentration to obtain a concentrate 1, and returning the sequence of the concentrated middlings to the previous stage of operation;
(5) adding magnetic hydrophobic particles into the scavenged tailings obtained in the step (3), stirring for 5-10min, and adding 10-20g/t foaming agent MIBC for flotation to obtain concentrate 2 and final tailings; and (4) combining the concentrate 2 and the concentrate 1 obtained in the step (4) into a final concentrate, and recovering the magnetic hydrophobic particles by using a magnetic separator.
The following description is given with reference to specific examples.
Example 1
Grinding certain nickel sulfide ore to 80% of minus 0.074mm, adding 400g/t of dispersant sodium hexametaphosphate, 300g/t of inhibitor yellow potato gum, 100g/t of collector butyl xanthate and 20g/t of foaming agent MIBC into ore pulp, stirring, mixing pulp, and roughing nickel sulfide minerals to obtain roughed concentrate and roughed tailings. And adding a collecting agent butyl xanthate and a foaming agent MIBC into the obtained rough tailings for scavenging twice to obtain scavenged tailings, returning the scavenged middlings to the previous stage in sequence, adding 50g/t of the collecting agent butyl xanthate and 20g/t of the foaming agent MIBC in the first scavenging, and adding 30g/t of the collecting agent butyl xanthate and 10g/t of the foaming agent MIBC in the second scavenging. Adding a dispersing agent sodium hexametaphosphate and an inhibitor sweet potato gum into the rough concentration concentrate for concentration for three times to obtain concentrate 1, and returning the concentrated middlings to the previous stage operation in sequence, wherein the dosage of the sodium hexametaphosphate added in the first concentration is 200g/t, the dosage of the sweet potato gum is 150g/t, the dosage of the sodium hexametaphosphate added in the second concentration is 100g/t, and the dosage of the sweet potato gum is 80 g/t. And no medicament is added in the third selection. Adding ferroferric oxide polydopamine composite nano-particles with the average particle size of 10 mu m, the amount of which is 3 percent of the ore amount, into the roughed tailings, stirring for 5min, and adding 10g/t foaming agent MIBC for flotation to obtain concentrate 2 and final tailings; concentrate 1 and concentrate 2 were combined into the final concentrate, and the magnetic hydrophobic particles were recovered with a magnetic separator.
Table 1 example 1 flotation test index (wt%)
| Product name | Yield of | Grade of nickel | Recovery rate of nickel |
| Concentrate ore | 6.82 | 7.18 | 81.41 |
| Tailings | 93.18 | 0.12 | 18.59 |
| Raw ore | 100 | 0.60 | 100 |
Example 2
Grinding certain nickel sulfide ore to-0.074 mm accounting for 85%, adding 500g/t of dispersant sodium hexametaphosphate, 200g/t of inhibitor yellow potato gum, 80g/t of collector butyl xanthate and 20g/t of foaming agent MIBC into ore pulp, stirring, mixing pulp, and roughing nickel sulfide minerals to obtain roughed concentrate and roughed tailings. And adding a collecting agent butyl xanthate and a foaming agent MIBC into the obtained rough tailings for scavenging twice to obtain scavenged tailings, returning the scavenged middlings to the previous stage in sequence, adding 40g/t of the collecting agent butyl xanthate and 20g/t of the foaming agent in the first scavenging, and adding 20g/t of the collecting agent butyl xanthate and 10g/t of the foaming agent MIBC in the second scavenging. Adding a dispersing agent sodium hexametaphosphate and an inhibitor sweet potato gum into the rough concentration concentrate for three times of concentration to obtain concentrate 1, and returning the middlings of the concentration to the previous stage of operation in sequence, wherein the dosage of the sodium hexametaphosphate added in the first concentration is 250g/t, the dosage of the sweet potato gum is 100g/t, the dosage of the sodium hexametaphosphate added in the second concentration is 100g/t, and the dosage of the sweet potato gum is 50 g/t. And no medicament is added in the third selection. Adding ferroferric oxide polydopamine composite nano-particles with the average particle size of 10 mu m, the amount of which is 5 percent of the ore amount, into the roughed tailings, stirring for 10min, and adding 10g/t of foaming agent MIBC for flotation to obtain concentrate 2 and final tailings; concentrate 1 and concentrate 2 were combined into the final concentrate, and the magnetic hydrophobic particles were recovered with a magnetic separator.
Table 2 example 2 flotation test index (wt%)
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A method for strengthening the flotation of refractory nickel sulfide ore by using magnetic hydrophobic particles is characterized by comprising the following steps: the method comprises the following steps:
(1) grinding: grinding nickel sulfide ore to-0.074 mm content of 80-90% to obtain ore grinding ore pulp;
(2) adding a dispersing agent sodium hexametaphosphate, an inhibitor gum dioscorea batatas, a collecting agent butyl xanthate and a foaming agent MIBC into the ore grinding pulp obtained in the step (1), stirring, mixing, and performing roughing to obtain roughing concentrate and roughing tailings;
(3) adding a collecting agent butyl xanthate and a foaming agent MIBC into the roughed tailings obtained in the step (2) to perform scavenging twice to obtain scavenged middlings and scavenged tailings, and returning the scavenged middlings to the previous stage of operation in sequence;
(4) adding a dispersing agent sodium hexametaphosphate and an inhibitor sweet potato gum into the rough concentration concentrate obtained in the step (2) for three times of concentration to obtain a concentrate 1, and returning the sequence of the concentrated middlings to the previous stage of operation;
(5) adding magnetic hydrophobic particles into the scavenged tailings obtained in the step (3), stirring for 5-10min, and adding 10-20g/t foaming agent MIBC for flotation to obtain concentrate 2 and final tailings; combining the concentrate 2 and the concentrate 1 obtained in the step (4) into a final concentrate, and recovering the magnetic hydrophobic particles by using a magnetic separator;
the magnetic hydrophobic particles in the step (5) are magnetic ferroferric oxide polydopamine composite particles, wherein polydopamine accounts for 50-70% of the total weight of the particles;
the using amount of the magnetic hydrophobic particles in the step (5) is 3-10% of the scavenging tailing amount;
the granularity of the magnetic hydrophobic particles in the step (5) is 5-20 mu m.
2. The method for reinforcing the flotation of the refractory nickel sulphide ores by using magnetic hydrophobic particles according to claim 1, characterized in that: in the step (2), the dosage of the sodium hexametaphosphate as the dispersing agent is 500-g/t, the dosage of the gum of the inhibitor is 200-300-g/t, the dosage of the butyl xanthate as the collecting agent is 80-100g/t, and the dosage of the MIBC as the foaming agent is 10-20 g/t.
3. The method for reinforcing the flotation of the refractory nickel sulphide ores by using magnetic hydrophobic particles according to claim 1, characterized in that: 40-50g/t of xanthate and 10-20g/t of foaming agent MIBC are added in the first scavenging in the step (3); and 20-30g/t of xanthate and 10-20g/t of foaming agent MIBC are added in the second scavenging.
4. The method for reinforcing the flotation of the refractory nickel sulphide ores by using magnetic hydrophobic particles according to claim 1, characterized in that: the dosage of the sodium hexametaphosphate added in the first selection in the step (4) is 200-150 g/t, and the dosage of the sweet potato gum is 100-150 g/t; the dosage of the sodium hexametaphosphate added for the second selection is 150g/t, and the dosage of the sweet potato gum is 50-80 g/t; and no medicament is added in the third selection.
5. The method for reinforcing the flotation of the refractory nickel sulphide ores by using magnetic hydrophobic particles according to claim 1, characterized in that: the grade of nickel in the final concentrate obtained in the step (5) is more than 6%, and the recovery rate of nickel is more than 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811131256.0A CN109078761B (en) | 2018-09-27 | 2018-09-27 | Method for reinforcing flotation of refractory nickel sulfide ore by using magnetic hydrophobic particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811131256.0A CN109078761B (en) | 2018-09-27 | 2018-09-27 | Method for reinforcing flotation of refractory nickel sulfide ore by using magnetic hydrophobic particles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109078761A CN109078761A (en) | 2018-12-25 |
| CN109078761B true CN109078761B (en) | 2020-11-27 |
Family
ID=64842800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811131256.0A Active CN109078761B (en) | 2018-09-27 | 2018-09-27 | Method for reinforcing flotation of refractory nickel sulfide ore by using magnetic hydrophobic particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109078761B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216020B (en) * | 2019-04-23 | 2020-11-03 | 中南大学 | Charged magnetic hydrophobic material and preparation method and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983001397A1 (en) * | 1981-10-26 | 1983-04-28 | Snook, Harvey | Magnetic flotation |
| CN102341179A (en) * | 2009-03-04 | 2012-02-01 | 巴斯夫欧洲公司 | Magnetic hydrophobic agglomerates |
| CN102725067A (en) * | 2009-11-11 | 2012-10-10 | 巴斯夫欧洲公司 | Method for increasing efficiency in the ore separating process by means of hydrophobic magnetic particles by applying targeted mechanical energy |
| CN104575908A (en) * | 2015-01-30 | 2015-04-29 | 中山大学 | Dopamine modified magnetic nano-particle, method for preparing same and application of dopamine modified magnetic nano-particle |
| CN106076602A (en) * | 2016-06-29 | 2016-11-09 | 昆明理工大学 | A kind of method of magnetizing mediums reunion low intensity magnetic separation enrichment zinc oxide ore |
| CN107597444A (en) * | 2017-10-25 | 2018-01-19 | 江西理工大学 | A kind of method for improving the microfine copper nickel sulfide mineral mineral processing index containing serpentine |
| CN108480056A (en) * | 2018-03-28 | 2018-09-04 | 中国矿业大学 | A method of it is sized mixing based on magnetic-particle intensified Daqu |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098156B (en) * | 2014-07-30 | 2016-05-11 | 中国科学院新疆理化技术研究所 | The purposes of poly-dopamine composite magnetic micro-nano granules in oily waste water treatment |
| EP3181230A1 (en) * | 2015-12-17 | 2017-06-21 | Basf Se | Ultraflotation with magnetically responsive carrier particles |
| JP6880614B2 (en) * | 2016-09-21 | 2021-06-02 | Jnc株式会社 | How to recover water-insoluble substances |
-
2018
- 2018-09-27 CN CN201811131256.0A patent/CN109078761B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983001397A1 (en) * | 1981-10-26 | 1983-04-28 | Snook, Harvey | Magnetic flotation |
| CN102341179A (en) * | 2009-03-04 | 2012-02-01 | 巴斯夫欧洲公司 | Magnetic hydrophobic agglomerates |
| CN102725067A (en) * | 2009-11-11 | 2012-10-10 | 巴斯夫欧洲公司 | Method for increasing efficiency in the ore separating process by means of hydrophobic magnetic particles by applying targeted mechanical energy |
| CN104575908A (en) * | 2015-01-30 | 2015-04-29 | 中山大学 | Dopamine modified magnetic nano-particle, method for preparing same and application of dopamine modified magnetic nano-particle |
| CN106076602A (en) * | 2016-06-29 | 2016-11-09 | 昆明理工大学 | A kind of method of magnetizing mediums reunion low intensity magnetic separation enrichment zinc oxide ore |
| CN107597444A (en) * | 2017-10-25 | 2018-01-19 | 江西理工大学 | A kind of method for improving the microfine copper nickel sulfide mineral mineral processing index containing serpentine |
| CN108480056A (en) * | 2018-03-28 | 2018-09-04 | 中国矿业大学 | A method of it is sized mixing based on magnetic-particle intensified Daqu |
Non-Patent Citations (1)
| Title |
|---|
| 应用选择性磁罩盖法磁选分离镍黄铁矿与蛇纹石;卢冀伟;《工程科学学报》;20180331;第313-320页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109078761A (en) | 2018-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021037242A1 (en) | Pyrrhotite mineral processing method using low-alkali process of magnetic separation followed by flotation | |
| CN106669964B (en) | A kind of beneficiation method recycling wolframite from tailing | |
| CN103143447B (en) | Beneficiation method of high-oxygenation-efficiency complicated copper ore containing co-associated metal | |
| CN103041924B (en) | Beneficiation process of recovering associated silver from lead-zinc-sliver sulfide ore | |
| CN109174467A (en) | A kind of method of lead-zinc sulfide ore object FLOTATION SEPARATION | |
| CN104148163B (en) | A kind of beneficiation method processing low-grade tin-lead-zinc multi-metal oxygen ore deposit | |
| CN113102114B (en) | Collecting agent for high-sulfur-content fine-fraction gold ore flotation | |
| CN111530639B (en) | Micro-fine particle zinc oxide ore copper ammonia complex gradient activation-enhanced vulcanization flotation method | |
| CN111054514A (en) | Method for gold separation of gold ore | |
| CN112156894A (en) | Method for flotation of uranium minerals from volcanic rock type uranium ores | |
| US11801517B2 (en) | Method for recovering gold in cyanide tailing by hierarchical ramified flotation | |
| CN109078761B (en) | Method for reinforcing flotation of refractory nickel sulfide ore by using magnetic hydrophobic particles | |
| CN113856911A (en) | Beneficiation method for high-sulfur copper gold silver ore | |
| CN113751203A (en) | Beneficiation method for copper-molybdenum ore in alpine region | |
| CN111686941B (en) | Efficient flotation method for copper ore containing ultrafine graphite | |
| CN110038718B (en) | Process for efficiently separating micro-fine tungsten ore by using centrifugal machine and flotation | |
| CN104148187A (en) | Ore selection method for treating tin, lead and zinc polymetallic oxidized ore | |
| CN110586335A (en) | High-alkali magnetic-first-floating-later-magnetic pyrite beneficiation method | |
| CN114643133B (en) | Beneficiation method for copper sulfide nickel tailings in non-uniform distribution | |
| CN111068900A (en) | Method for separating high-quality molybdenum concentrate from lead-containing molybdenum ore | |
| CN107626456B (en) | Method for recovering cobalt-sulfur concentrate from fine-grained iron tailings | |
| CN109078760B (en) | Method for improving flotation recovery rate of micro-fine-particle copper sulfide ore by using magnetic hydrophobic particles | |
| CN112452549B (en) | Beneficiation method for micro-fine particle tungsten ore | |
| CN113399123B (en) | Gold ore composite collecting agent and application thereof | |
| CN112588446B (en) | Recovery method of copper cobalt ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |