CN110124871A - A kind of interface regulation method of copper-molybdenum separation of pulp concentrate - Google Patents
A kind of interface regulation method of copper-molybdenum separation of pulp concentrate Download PDFInfo
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- CN110124871A CN110124871A CN201910536292.3A CN201910536292A CN110124871A CN 110124871 A CN110124871 A CN 110124871A CN 201910536292 A CN201910536292 A CN 201910536292A CN 110124871 A CN110124871 A CN 110124871A
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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
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
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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
- B03D1/028—Control and monitoring of flotation processes; computer models therefor
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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
- B03D2201/00—Specified effects produced by the flotation agents
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
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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
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of interface regulation method of copper-molybdenum separation of pulp concentrate includes the following steps: that vulcanized sodium and sodium dithionite mixed potential regulator 7-10kg/t 1) is added, pulp potential, which is adjusted, arrives -200~-300mV, sizes mixing the time 3 minutes;2) dimethyl silicone polymer 30-50g/t is added, is acted on 3 minutes;3) the hydrophilic inhibitor 4-5kg/t containing thiourea functional group is added, is acted on 3 minutes, copper mineral surface becomes hydrophilic by hydrophobic, and the contact angle of chalcopyrite drops to 10 degree from 70 degree, and the contact angle of molybdenite remains at 85 degree;4) high-molecular compound Sodium Polyacrylate 40-60g/t is added, forms insulating layer on chalcopyrite surface, the electronics transfer effect that copper mineral is contacted with molybdenite is eliminated, maintains chalcopyrite and molybdenite electrochemistry difference, promote centrifugation.By the Galvanic acting regulatory between pulp potential regulation, foam viscosity regulation, the hydrophilic regulation of mineral surfaces and mineral grain, to realize efficiently separating for copper-molybdenum bulk concentrate.
Description
Technical field
The present invention relates to a kind of interfaces of copper-molybdenum separation of pulp concentrate to regulate and control method, and this method forms copper mineral
The copper-molybdenum bulk concentrate complicated, molybdenum content is low, separating difficulty is big has particularly preferred effect.
Background technique
It can be generally divided into suppression copper in traditional copper-molybdenum FLOTATION SEPARATION and float the two methods of molybdenum and floating copper of inhibition molybdenum, wherein due to
Molybdenum content then reaches between 25-30% in 0.2-1% or so, copper in copper concentrate, and the high molybdenum of copper is low, floats few principle according to suppression,
It is all that suppression copper floats molybdenum in general production.The medicament that suppression copper floats molybdenum has vulcanized sodium, potassium permanganate, Cymag, phosphorus Ruo Kesi, contains sulfydryl
Organic inhibitor and false acetyl thiourea etc., wherein most commonly seen with vulcanized sodium, other inhibitor are adapted to and effect is poor.Mesh
In preceding copper-molybdenum bulk concentrate separation production still based on vulcanized sodium, but since vulcanized sodium is reducing agent, needed in floatation process
A large amount of inflations, can consume a large amount of vulcanized sodium, big so as to cause amount of sodium sulfide, effect is bad.Although using inflated with nitrogen can be with
Overcome consumption of the inflation oxidation to vulcanized sodium, but need special nitrogen workshop processed, production operation is also relatively cumbersome, few to select factory
Using nitrogen charging flotation.Oxidant potassium permanganate is effective for part secondary copper ores, does not have for most of copper-molybdenum bulk concentrate
Effect;The organic inhibition of sulfydryl class equally will appear the phenomenon that failure in production, while have the smell of sulfydryl larger, to selecting factory's ring
Border is affected, at present industrially still without successful report;The medicaments such as Cymag, phosphorus Ruo Kesi, effect is although good, but toxicity
It is relatively strong, it already belongs to eliminate medicament at home.Copper-molybdenum bulk concentrate due to copper mineral complicated composition, molybdenum grade is low and surface contains
There are the problems such as collecting agent, traditional separation method, it is difficult to obtain ideal effect, need to develop new copper-molybdenum bulk concentrate separation
Method.
Summary of the invention
The present invention is directed to the characteristics of copper-molybdenum bulk concentrate and property, proposes a kind of interface of copper-molybdenum separation of pulp concentrate
Regulation method, can be for 0.1-0.2% containing molybdenum, complexity low-grade copper-molybdenum of the copper mineral based on chalcopyrite, covellite, vitreous copper
Bulk concentrate efficiently separates.
The technical scheme is that a kind of interface of copper-molybdenum separation of pulp concentrate regulates and controls method, including solid-liquid mine
Starch electric potential regulating, the regulation of gas-liquid interface tension, the hydrophilic regulation of solid liquid interface and solid solid interface Galvanic acting regulatory, concrete operations
Steps are as follows:
1) solid-liquid pulp potential regulates and controls: collecting agent is an electrochemical process in the absorption of chalcopyrite and molybdenite surface,
Therefore their desorption is also controlled by pulp potential, and vulcanized sodium and sodium dithionite mixed potential regulator 7- is added
10kg/t, pulp potential, which is adjusted, arrives -200~-300mV, sizes mixing the time 3 minutes, collecting agent film in chalcopyrite surface is in Asia at this time
Stable state is easy to happen desorption, is conducive to the competitive Adsorption effect of inhibitor.
2) gas-liquid interface tension regulate and control: the quality of flotation concentrate stablize with foam it is related, due to copper-molybdenum bulk concentrate separation
When basicity it is higher, flotation froth viscosity is big, and the mobility of foam is poor, and the miscellaneous rolling action of foam is stronger, influence Molybdenum Concentrate Grade,
Need repeatedly it is selected could obtain 45% or more molybdenum concentrate;Although addition waterglass can inhibit gangue mineral, subtract
It is mingled with effect less, but waterglass will affect Copper Concentrate Filtration, influence main flow production.The present invention is using addition poly dimethyl silicon
Oxygen alkane 30-50g/t is acted on 3 minutes, be can reduce pulp viscosity and bubble tension, promote the merger of bubble to act on, significantly drop
Rolling action of the low bubble to copper mineral and gangue.
3) the hydrophilic regulation of solid liquid interface: on the basis of regulating and controlling in front, the false acetyl thiourea containing thiourea functional group is added
Hydrophilic inhibitor 4-5kg/t is acted on 3 minutes, and copper mineral surface becomes hydrophilic by hydrophobic, and the contact angle of chalcopyrite declines from 70 degree
To 10 degree, and the contact angle of molybdenite remains at 85 degree.
4) solid solid interface Galvanic acting regulatory: since sulfide mineral is semiconductor mineral, wherein chalcopyrite forbidden band is
0.4eV, molybdenite 2.0eV, the two contact can generate Galvanic effect, cause the fermi level of the two close, electrochemistry
Nature difference reduces, and is unfavorable for the two separation.The present invention is by addition high-molecular compound Sodium Polyacrylate 40-60g/t, in Huang
Copper mine surface forms insulating layer, to eliminate the electronics transfer effect that copper mineral is contacted with molybdenite, maintains chalcopyrite and brightness molybdenum
Mine electrochemistry difference promotes centrifugation.
The interface of the copper-molybdenum separation of pulp concentrate regulates and controls method, concrete operation step and control technology condition
Are as follows:
It is chalcopyrite that raw mineral materials copper-molybdenum, which mixes the copper mineral in concentrate, and molybdenum ore object is molybdenite, copper content 27%, molybdenum
Content 0.1-0.2%, addition vulcanized sodium and sodium dithionite 7-10kg/t, pH values of pulp 11-12, pulp potential -220mV~-
300mV sizes mixing 3 minutes, and dimethyl silicone polymer 30-50g/t is then added and adjusts gas-liquid interface tension, acts on 2 minutes, is added
False acetyl thiourea 4-5kg/t adjusts mineral hydrophily, stirs 3 minutes, is eventually adding Sodium Polyacrylate 40-60g/t, acts on 3 points
Clock, thick four essence two sweep available molybdenum concentrate 45.66%, the index of flotation recovery rate 85.36%.
Unless otherwise stated, percentage of the present invention is mass percent, and the sum of each component content percentage is
100%.
About the unit of " liquid-solid ratio ", liquid-solid ratio is hydrometallurgy industry professional term, is all mentioned in common textbook
" envelope-bulk to weight ratio of leachate and doses ", the unit of envelope-bulk to weight ratio are ml/g, L/kg or m3/t。
The solid solid interface refers to the interface between mineral grain.
The solid liquid interface refers to the interface between mineral surfaces and water.
The gas-liquid interface refers to the interface in bubble between air and water.
The solid-liquid ore pulp refers to the material that mineral grain and water are mixed into.Contain two kinds of ingredients of mineral and water in ore pulp.
Of the invention has the prominent advantages that:
According to the property and feature of copper-molybdenum bulk concentrate, from ore pulp, solid-liquid interface, liquid-vapor interface, solid-solid interface etc. four
A aspect is regulated and controled, and the regulation of copper-molybdenum separation of pulp concentrate pulp potential, the regulation of gas-liquid interface tension, mineral are realized
Solid solid interface Galvanic acting regulatory between the hydrophilic regulation of surface solid liquid interface and mineral grain, to realize copper-molybdenum bulk concentrate
It efficiently separates.
Specific embodiment
Technical solution of the present invention is described further by the following examples.
Embodiment 1
The present embodiment is that the interface of copper-molybdenum separation of pulp concentrate of the present invention regulates and controls an example of method, mine
Raw material and ingredient are as follows: cupric 27% contains molybdenum 0.20%, and copper mineral is mainly chalcopyrite, and molybdenum ore object is molybdenite, and material is thin
- 0.074 micron of degree accounts for 90%, concentration 25%.Specific steps are as follows:
1) solid-liquid pulp potential regulates and controls: vulcanized sodium 4kg/t and sodium dithionite 3kg/t, pH values of pulp 11.5, ore pulp is added
Current potential -200mV, stirring action 3 minutes;
2) gas-liquid interface tension regulates and controls: dimethyl silicone polymer 30g/t is added and adjusts gas-liquid interface tension, stirring action 2
Minute;
3) the hydrophilic regulation of solid liquid interface: addition vacation acetyl thiourea 4.0kg/t adjusting mineral hydrophily, stirring action 3 minutes;
4) solid solid interface Galvanic acting regulatory: being eventually adding Sodium Polyacrylate 40g/t, and stirring action 3 minutes.
Sweeping by thick four essence two and obtaining molybdenum concentrate grade is 45.56%, the index that flotation recovery rate is 85.36%.
Embodiment 2
The present embodiment is that the interface of copper-molybdenum separation of pulp concentrate of the present invention regulates and controls another example of method,
Raw mineral materials and ingredient are as follows: cupric 27% contains molybdenum 0.12%, and copper mineral is mainly chalcopyrite and covellite, and molybdenum ore object is molybdenite,
- 0.074 micron of fineness of materials accounts for 90%, concentration 25%.Specific steps are as follows:
1) solid-liquid pulp potential regulates and controls: vulcanized sodium 6kg/t and sodium dithionite 4kg/t, pH values of pulp 12, ore pulp electricity is added
Position -300mV, stirring action 4 minutes;
2) gas-liquid interface tension regulates and controls: dimethyl silicone polymer 40g/t is added, adjusts gas-liquid interface tension, stirring action 3
Minute;
3) the hydrophilic regulation of solid liquid interface: addition vacation acetyl thiourea 4.5kg/t adjusting mineral hydrophily, stirring action 3 minutes;
4) solid solid interface Galvanic acting regulatory: being eventually adding Sodium Polyacrylate 50g/t, and stirring action 3 minutes.
Sweeping by thick four essence two and obtaining molybdenum concentrate grade is 45.12%, the index that flotation recovery rate is 84.21%
Embodiment 3
The present embodiment is that the interface of copper-molybdenum separation of pulp concentrate of the present invention regulates and controls another example of method,
Raw mineral materials and ingredient are as follows: copper 27% contains molybdenum 0.15%, and copper mineral is mainly chalcopyrite, and molybdenum ore object is molybdenite, and material is thin
- 0.074 micron of degree accounts for 90%, concentration 25%.Specific steps are as follows:
1) solid-liquid pulp potential regulates and controls: vulcanized sodium 8kg/t and sodium dithionite 3kg/t, pH values of pulp 12.5, ore pulp is added
Current potential -250mV mixes effect 3 minutes;
2) gas-liquid interface tension regulates and controls: dimethyl silicone polymer 50g/t is added, adjusts gas-liquid interface tension, stirring action 3
Minute;
3) the hydrophilic regulation of solid liquid interface: addition vacation acetyl thiourea 5.0kg/t adjusting mineral hydrophily, stirring action 5 minutes;
4) solid solid interface Galvanic acting regulatory: being eventually adding Sodium Polyacrylate 60g/t, and stirring action 4 minutes.
Sweeping by thick five essence three and obtaining molybdenum concentrate grade is 45.75%, the index that flotation recovery rate is 83.82%.
Embodiment 4
The present embodiment is that the interface of copper-molybdenum separation of pulp concentrate of the present invention regulates and controls another example of method,
Raw mineral materials and ingredient are as follows: Inner Mongol Mine Cu mine copper-molybdenum mixes concentrate, and copper mineral is chalcopyrite, and molybdenum ore object is molybdenite,
Copper content is 27.15%, molybdenum content 0.22%, cannot achieve the separation of copper-molybdenum bulk concentrate, molybdenum concentrate using traditional vulcanized sodium
Grade only has 30&, and the rate of recovery only has 45%.
The method regulated and controled using interface of the invention adjusts pulp density 30%, and vulcanized sodium and sodium dithionite is added
7kg/t, pH values of pulp 11.5, pulp potential -250mV size mixing 3 minutes, and dimethyl silicone polymer 30g/t is then added and adjusts gas-liquid
Interfacial tension stirs 2 minutes, and vacation acetyl thiourea 5.5kg/t is added and adjusts mineral hydrophily, stirs 3 minutes, is eventually adding poly- third
Olefin(e) acid sodium 45g/t acts on 3 points, and sweeping by thick four essence two and obtaining molybdenum concentrate grade is 45.66%, flotation recovery rate 85%
Index.
Claims (4)
1. a kind of interface of copper-molybdenum separation of pulp concentrate regulates and controls method, which is characterized in that regulate and control including solid-liquid pulp potential,
The regulation of gas-liquid interface tension, the hydrophilic regulation of solid liquid interface and solid solid interface Galvanic acting regulatory, specific steps are as follows:
1) solid-liquid pulp potential regulates and controls: vulcanized sodium and sodium dithionite mixed potential regulator 7-10kg/t, ore pulp electricity is added
Position, which is adjusted, arrives -200~-300mV, pH values of pulp 11-12, sizes mixing the time 3 minutes;
2) gas-liquid interface tension regulates and controls: addition dimethyl silicone polymer 30-50g/t acts on 3 minutes, it is gentle to reduce pulp viscosity
Tension is steeped, rolling action of the bubble to copper mineral and gangue is reduced;
3) the hydrophilic regulation of solid liquid interface: on the basis of regulating and controlling in front, false acetyl thiourea hydrophilic inhibitor 4-5kg/t is added, is made
With 3 minutes, copper mineral surface became hydrophilic by hydrophobic, the contact angle of chalcopyrite drops to 10 degree from 70 degree, and molybdenite connects
Feeler remains at 85 degree;
4) solid solid interface Galvanic acting regulatory: addition high-molecular compound Sodium Polyacrylate 40-60g/t, on chalcopyrite surface
Insulating layer is formed, the electronics transfer effect that copper mineral is contacted with molybdenite is eliminated, maintains chalcopyrite and molybdenite electrochemistry difference,
Promote centrifugation.
2. the interface of copper-molybdenum separation of pulp concentrate according to claim 1 regulates and controls method, which is characterized in that mineral are former
Expecting that copper-molybdenum mixes the copper mineral in concentrate is chalcopyrite, and molybdenum ore object is molybdenite, copper content 27.15%, molybdenum content 0.1-
0.2%, concrete operation step and control technology condition are as follows:
Vulcanized sodium and sodium dithionite 7-10kg/t is added, pulp potential, which is adjusted, arrives -200mV~-300mV, pH values of pulp 11-
12, it sizes mixing 3 minutes, dimethyl silicone polymer 30-50g/t is then added and adjusts gas-liquid interface tension, stirs 2 minutes, adds
False acetyl thiourea 4-5kg/t adjusts mineral hydrophily, stirs 3 minutes, is eventually adding Sodium Polyacrylate 40-60g/t, acts on 3 points,
Available molybdenum concentrate 45.66%, the index of flotation recovery rate 85.36% are swept through thick four essence two.
3. the interface of copper-molybdenum separation of pulp concentrate according to claim 1 regulates and controls method, which is characterized in that mineral are former
Material and ingredient are as follows: cupric 27% contains molybdenum 0.20%, and copper mineral is mainly chalcopyrite, and molybdenum ore object is molybdenite, fineness of materials-
0.074 micron accounts for 90%, concentration 25%;Concrete operation step and control technology condition are as follows:
1) solid-liquid pulp potential regulates and controls: vulcanized sodium 4kg/t and sodium dithionite 3kg/t, pH values of pulp 11.5, ore pulp electricity is added
Position -200mV, stirring action 3 minutes;
2) gas-liquid interface tension regulates and controls: addition dimethyl silicone polymer 30g/t adjusting gas-liquid interface tension, and stirring action 2 minutes;
3) the hydrophilic regulation of solid liquid interface: addition vacation acetyl thiourea 4.0kg/t adjusting mineral hydrophily, stirring action 3 minutes;
4) solid solid interface Galvanic acting regulatory: being eventually adding Sodium Polyacrylate 40g/t, and stirring action 3 minutes;
Sweeping by thick four essence two and obtaining molybdenum concentrate grade is 45.56%, the index that flotation recovery rate is 85.36%.
4. the interface of copper-molybdenum separation of pulp concentrate according to claim 1 regulates and controls method, which is characterized in that mineral are former
Material and ingredient are as follows: cupric 27% contains molybdenum 0.12%, and copper mineral is mainly chalcopyrite and covellite, and molybdenum ore object is molybdenite, and material is thin
- 0.074 micron of degree accounts for 90%, concentration 25%, concrete operation step and control technology condition are as follows:
1) solid-liquid pulp potential regulates and controls: vulcanized sodium 6kg/t and sodium dithionite 4kg/t, pH values of pulp 12, pulp potential-is added
300mV, stirring action 4 minutes;
2) gas-liquid interface tension regulates and controls: dimethyl silicone polymer 40g/t is added, adjusts gas-liquid interface tension, stirring action 3 divides
Clock;
3) the hydrophilic regulation of solid liquid interface: addition vacation acetyl thiourea 4.5kg/t adjusting mineral hydrophily, stirring action 3 minutes;
4) solid solid interface Galvanic acting regulatory: being eventually adding Sodium Polyacrylate 50g/t, and stirring action 3 minutes;
Sweeping by thick four essence two and obtaining molybdenum concentrate grade is 45.12%, the index that flotation recovery rate is 84.21%.
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Cited By (4)
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CN111495609A (en) * | 2020-04-13 | 2020-08-07 | 北京矿冶科技集团有限公司 | Separation method of copper-molybdenum bulk concentrate |
CN112575190A (en) * | 2020-11-24 | 2021-03-30 | 金川集团股份有限公司 | Beneficiation method for copper-nickel separation of complex refractory nickel-copper concentrate |
CN113275129A (en) * | 2021-05-26 | 2021-08-20 | 昆明冶金研究院有限公司 | Method for utilizing mineral separation backwater of copper-molybdenum bulk concentrate |
CN115921119A (en) * | 2022-11-29 | 2023-04-07 | 昆明理工大学 | Copper-molybdenum ore flotation separation inhibitor and application thereof |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN111495609A (en) * | 2020-04-13 | 2020-08-07 | 北京矿冶科技集团有限公司 | Separation method of copper-molybdenum bulk concentrate |
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CN112575190B (en) * | 2020-11-24 | 2022-09-02 | 金川集团股份有限公司 | Beneficiation method for copper-nickel separation of complex refractory nickel-copper concentrate |
CN113275129A (en) * | 2021-05-26 | 2021-08-20 | 昆明冶金研究院有限公司 | Method for utilizing mineral separation backwater of copper-molybdenum bulk concentrate |
CN115921119A (en) * | 2022-11-29 | 2023-04-07 | 昆明理工大学 | Copper-molybdenum ore flotation separation inhibitor and application thereof |
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