CN111266196B - Combined type scheelite collecting agent for sorting ultra-low-grade tungsten and molybdenum ores and sorting and recycling process - Google Patents
Combined type scheelite collecting agent for sorting ultra-low-grade tungsten and molybdenum ores and sorting and recycling process Download PDFInfo
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- CN111266196B CN111266196B CN202010171970.3A CN202010171970A CN111266196B CN 111266196 B CN111266196 B CN 111266196B CN 202010171970 A CN202010171970 A CN 202010171970A CN 111266196 B CN111266196 B CN 111266196B
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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
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
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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
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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
- B03D1/002—Inorganic 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
- B03D1/001—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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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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
Abstract
The invention discloses a combined type white tungsten collecting agent for sorting ultra-low-grade tungsten and molybdenum ores, which comprises a roughing group agent and a concentrating group agent in a formula, wherein the roughing group agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensation compound of alkylphenol and ethylene oxide in a mass ratio of 10:10:10 (1-2); the selection group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthate according to the mass ratio of 10: (1-3) in proportion. According to the invention, the collecting agents of other components are added to the original FX-6 type collecting agent, so that the purposes of good separation and recovery are achieved, and the metal loss of scheelite is avoided, so that the recovery rate of tungsten and molybdenum metals is improved, the production cost is reduced, and the economic benefit is created; and the combined collector component improved on the basis of the FX-6 type collector is easy to obtain and manufacture.
Description
Technical Field
The invention belongs to the technical field of tungsten-molybdenum ore treatment, and particularly relates to a combined type scheelite collecting agent for sorting ultra-low-grade tungsten-molybdenum ore; in particular to a separation and recovery process of ultra-low-grade tungsten-molybdenum ore.
Background
Scheelite is an ore, in the shape of a granular stone, white with a yellowish color and with a fatty luster. Orange, biconical crystals, large and transparent dark orange at the tip. Symbiotic with calcite, muscovite and black cassiterite, wherein the scheelite and calcite are fluorescent. It is heated or irradiated by ultraviolet to be purple. Is the main raw material for tungsten smelting.
The scheelite is brittle, the phenomenon of early falling can occur in the ore crushing process, and the phenomenon of over-crushing can occur when the original ore grinding fineness is controlled at 70%, so that the scheelite is difficult to float and recover; most scheelite beds are embedded and distributed, most scheelite beds are associated and symbiotic with calcium-containing gangue minerals and have similar floatability, and the original single collector addition system causes that scheelite can generate weak minerals for collecting during heating concentration, so that the aim of good separation and recovery cannot be fulfilled, and metal loss of the scheelite is caused. Most of the tungsten-molybdenum ores belong to associated ores and are extremely non-uniform in distribution, and the molybdenum ores in the tungsten-molybdenum ores are in an under-ground state, so that the rough concentrate contains more coarse-fraction minerals, the coarse-fraction minerals are difficult to float upwards under the original 'one-coarse-two-sweep-three-fine' process, the recovery of target minerals is limited, and a large amount of molybdenum metal is lost. Therefore, a combined type scheelite collecting agent for ultra-low grade tungsten and molybdenum ore separation and recovery process is provided.
Disclosure of Invention
The invention aims to provide a combined type scheelite collecting agent for sorting ultra-low-grade tungsten and molybdenum ores and a sorting and recycling process, so as to solve the problem that scheelite flotation and recycling in the prior art are difficult in the background technology; the single collector addition system causes that the scheelite can generate weak collected target minerals during heating concentration, so that the aim of good separation and recovery cannot be achieved, and metal loss of the scheelite is caused; the coarse fraction minerals are difficult to float upwards, the recovery of the target minerals is limited, and a large amount of molybdenum metal is lost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a combined type scheelite collecting agent for separating ultra-low grade tungsten and molybdenum ores is disclosed, and the formula of the combined type scheelite collecting agent comprises a roughing group agent and a concentrating group agent, wherein
The roughing agent comprises an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensation product of alkylphenol and ethylene oxide; the roughing agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10 (1-2);
the concentrating group agent comprises FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate, and the concentrating group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate according to the mass ratio of 10: (1-3) in proportion.
Preferably, the roughing agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10: 1; the selection group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthate according to the mass ratio of 10:1 in a certain proportion.
Preferably, the roughing agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10: 2; the selection group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthate according to the mass ratio of 10:2 in proportion.
Preferably, the roughing agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10: 2; the selection group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthate according to the mass ratio of 10: 3 in proportion.
Preferably, the preparation method of the combined type scheelite collector comprises the following steps:
s1, preparing materials: FX-6 type collecting agent, vegetable oleic acid, soda ash, condensation compound of alkylphenol and ethylene oxide, waste engine oil and n-butyl xanthate;
s2, weighing the roughing agent and the selecting agent according to the mass ratio, and putting the vegetable oleic acid, the soda ash, the condensation compound of the alkylphenol and the ethylene oxide into an emulsifying machine A for mixing and heating reaction; then, putting the waste engine oil and n-butyl xanthate into an emulsifying machine B for mixing and heating reaction;
s3, after the reaction is finished, respectively carrying out high-speed emulsification in an emulsifying machine A, B at a rotating speed of not less than 2800 r/min;
and S4, after cooling at high speed, respectively and uniformly mixing with FX-6 type collecting agent at normal temperature, thus completing the preparation of rough concentration agent and fine concentration agent of the combined type white tungsten collecting agent.
Preferably, in S2, the interior of the emulsifying machine A, B is heated to 55-65 ℃, the reaction is maintained for 30-50min at a stirring speed of 200-300r/min, and the rotation speed is set to 120-180r/min during the mixing in S4.
The invention provides a separation and recovery process of ultra-low-grade tungsten-molybdenum ore, which comprises the following steps:
s1, size mixing: grinding and grading raw ores, preparing the raw ores into ore pulp with the concentration of 35-40%, injecting the ore pulp into a flotation machine, selecting soda ash and flake caustic soda as regulators, and adjusting the pH value of the ore pulp to 7-9;
s2, rough selection: inhibiting calcium-containing gangue minerals by using a combined inhibitor of water glass and sodium sulfate, adding a roughing agent, and performing roughing and scavenging to obtain scheelite rough concentrate;
s3, concentrating the concentration of the scheelite rough concentrate to 60 mass percent, adding a combined inhibitor of water glass and sodium sulfate, adding a fine selection agent, heating and stirring, and then diluting to 35 mass percent;
s4, carrying out five times of blank concentration on the scheelite rough concentrate processed in the step S3 to obtain scheelite concentrate;
s5, selecting the molybdenum ore treated in the S4, adding a drum screen at a molybdenum selection tailing section, and screening and recovering the target minerals through the drum screen.
Preferably, the addition amount of the roughing grouping agent and the concentration grouping agent relative to the mass of the raw ore is 200-500 g/t.
Preferably, in S3, the amount of the combined inhibitor of water glass and sodium sulfate added is set to 1000g to 2000g/t relative to the mass of the raw ore.
The invention has the technical effects and advantages that: compared with the prior art, the combined type scheelite collecting agent and the separation and recovery process for separating the ultra-low-grade tungsten and molybdenum ores provided by the invention have the following advantages:
1. according to the invention, the collecting agent of other components is added to the original FX-6 type collecting agent, so that the capability of collecting target minerals is enhanced during heating and concentrating, the purpose of good separation and recovery is achieved, and the metal loss of scheelite can not be caused, thereby improving the recovery rate of tungsten and molybdenum metals, reducing the production cost and creating economic benefits; and the combined collector component improved on the basis of the FX-6 type collector is easy to obtain and manufacture.
2. According to the separation and recovery process for the ultra-low-grade tungsten-molybdenum ore, the drum screen is additionally arranged at the tailing section for selecting the molybdenum ore, the target ore is screened and recovered through the drum screen, and the recovery rate of coarse-grained metal is increased.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A combined type scheelite collecting agent for separating ultra-low grade tungsten and molybdenum ores is disclosed, and the formula of the combined type scheelite collecting agent comprises a roughing group agent and a concentrating group agent, wherein
The roughing agent comprises an FX-6 type collecting agent, vegetable oleic acid, soda ash and a condensate of alkylphenol and ethylene oxide, and the roughing agent is composed of the FX-6 type collecting agent, the vegetable oleic acid, the soda ash, the condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10: 1;
the concentrating group agent comprises FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate, and the concentrating group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate according to the mass ratio of 10:1 in a certain proportion.
The preparation method of the combined type scheelite collecting agent comprises the following steps:
s1, preparing materials: FX-6 type collecting agent, vegetable oleic acid, soda ash, condensation compound of alkylphenol and ethylene oxide, waste engine oil and n-butyl xanthate;
s2, weighing the roughing agent and the selecting agent according to the mass ratio, and putting the vegetable oleic acid, the soda ash, the condensation compound of the alkylphenol and the ethylene oxide into an emulsifying machine A for mixing and heating reaction; then, putting the waste engine oil and n-butyl xanthate into an emulsifying machine B for mixing and heating reaction; heating the interior of the emulsifying machine A, B to 55-65 ℃, keeping the reaction for 30-50min at the stirring speed of 200-300r/min, and setting the rotating speed to be 120-180r/min during the mixing in S4;
s3, after the reaction is finished, respectively carrying out high-speed emulsification in an emulsifying machine A, B at a rotating speed of not less than 2800 r/min;
and S4, after cooling at high speed, respectively and uniformly mixing with FX-6 type collecting agent at normal temperature, thus completing the preparation of rough concentration agent and fine concentration agent of the combined type white tungsten collecting agent.
The invention provides a separation and recovery process of ultra-low-grade tungsten-molybdenum ore, which comprises the following steps:
s1, size mixing: grinding and grading raw ores, preparing the raw ores into ore pulp with the concentration of 35-40%, injecting the ore pulp into a flotation machine, selecting soda ash and flake caustic soda as regulators, and adjusting the pH value of the ore pulp to 7-9;
s2, rough selection: inhibiting calcium-containing gangue minerals by using a combined inhibitor of water glass and sodium sulfate, adding a roughing agent, and performing roughing and scavenging to obtain scheelite rough concentrate; the addition amount of the roughing agent relative to the mass of the raw ore is 200-500 g/t;
s3, concentrating the concentration of the scheelite rough concentrate to 60 mass percent, adding a combined inhibitor of water glass and sodium sulfate, adding a fine selection agent, heating and stirring, and then diluting to 35 mass percent; the addition amount of the combined inhibitor of water glass and sodium sulfate is set to be 1000g-2000g/t relative to the mass of raw ore; the addition amount of the concentration group agent relative to the mass of the raw ore is 200-500 g/t;
s4, carrying out five times of blank concentration on the scheelite rough concentrate processed in the step S3 to obtain scheelite concentrate;
s5, selecting the molybdenum ore treated in the S4, adding a drum screen at a molybdenum selection tailing section, and screening and recovering the target minerals through the drum screen.
Example 2
Different from the embodiment 1, the combined type scheelite collecting agent for the ultra-low grade tungsten and molybdenum ore separation comprises a roughing group agent and a concentrating group agent, wherein:
the roughing agent comprises an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensation product of alkylphenol and ethylene oxide; the roughing agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10: 2;
the concentrating group agent comprises FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate, and the concentrating group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate according to the mass ratio of 10:2 in proportion.
Example 3
Different from the embodiment 1, the combined type scheelite collecting agent for the ultra-low grade tungsten and molybdenum ore separation comprises a roughing group agent and a concentrating group agent, wherein:
the roughing agent comprises an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensation product of alkylphenol and ethylene oxide; the roughing agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10: 2;
the concentrating group agent comprises FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate, and the concentrating group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate according to the mass ratio of 10: 3 in proportion.
In summary, the following steps: compared with the prior art, after the three groups of embodiments are implemented, the FX-6 type collecting agent is added with collecting agents of other components, so that the capacity of collecting target minerals is enhanced during heating and concentrating, the aim of well sorting and recovering is fulfilled, and the metal loss of scheelite is avoided, so that the recovery rate of tungsten and molybdenum metals is improved, the production cost is reduced, and economic benefits are created; and the combined collector component improved on the basis of the FX-6 type collector is easy to obtain and manufacture. According to the separation and recovery process for the ultra-low-grade tungsten-molybdenum ore, the drum screen is additionally arranged at the tailing section for selecting the molybdenum ore, the target ore is screened and recovered through the drum screen, and the recovery rate of coarse-grained metal is increased.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. A combined type scheelite collecting agent for ultra-low grade tungsten and molybdenum ore separation is characterized in that: the formula of the combined type scheelite collecting agent comprises a roughing group agent and a concentrating group agent, wherein
The roughing agent comprises an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensation product of alkylphenol and ethylene oxide; the roughing agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10 (1-2);
the concentrating group agent comprises FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate, and the concentrating group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate according to the mass ratio of 10: (1-3) in proportion.
2. The combined type scheelite collector for ultra-low grade tungsten and molybdenum ore separation according to claim 1, which is characterized in that: the roughing agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10: 1; the selection group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthate according to the mass ratio of 10:1 in a certain proportion.
3. The combined type scheelite collector for ultra-low grade tungsten and molybdenum ore separation according to claim 1, which is characterized in that: the roughing agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10: 2; the selection group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthate according to the mass ratio of 10:2 in proportion.
4. The combined type scheelite collector for ultra-low grade tungsten and molybdenum ore separation according to claim 1, which is characterized in that: the roughing agent consists of an FX-6 type collecting agent, vegetable oleic acid, soda ash, a condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10: 2; the selection group agent is prepared from FX-6 type collecting agent, waste engine oil and n-butyl xanthate according to the mass ratio of 10: 3 in proportion.
5. The combined type scheelite collector for ultra-low grade tungsten and molybdenum ore separation according to claim 1, which is characterized in that: the preparation method of the combined type scheelite collecting agent comprises the following steps:
s1, preparing materials: FX-6 type collecting agent, vegetable oleic acid, soda ash, condensation compound of alkylphenol and ethylene oxide, waste engine oil and n-butyl xanthate;
s2, weighing the roughing agent and the selecting agent according to the mass ratio, and putting the vegetable oleic acid, the soda ash, the condensation compound of the alkylphenol and the ethylene oxide into an emulsifying machine A for mixing and heating reaction; then, putting the waste engine oil and n-butyl xanthate into an emulsifying machine B for mixing and heating reaction;
s3, after the reaction is finished, respectively carrying out high-speed emulsification in an emulsifying machine A, B at a rotating speed of not less than 2800 r/min;
and S4, after cooling at high speed, respectively and uniformly mixing with FX-6 type collecting agent at normal temperature, thus completing the preparation of rough concentration agent and fine concentration agent of the combined type white tungsten collecting agent.
6. The combined type scheelite collector for ultra-low grade tungsten and molybdenum ore separation according to claim 5, which is characterized in that: in S2, the interior of the emulsifying machine A, B is heated to 55-65 ℃, the reaction is kept for 30-50min at the stirring speed of 200-300r/min, and the rotation speed is set to be 180r/min at the mixing in S4.
7. The separation and recovery process of the ultra-low-grade tungsten-molybdenum ore is characterized by comprising the following steps of:
s1, size mixing: grinding and grading raw ores, preparing the raw ores into ore pulp with the concentration of 35-40%, injecting the ore pulp into a flotation machine, selecting soda ash and flake caustic soda as regulators, and adjusting the pH value of the ore pulp to 7-9;
s2, rough selection: inhibiting calcium-containing gangue minerals by using a combined inhibitor of water glass and sodium sulfate, adding a roughing agent, and performing roughing and scavenging to obtain scheelite rough concentrate;
s3, concentrating the concentration of the scheelite rough concentrate to 60 mass percent, adding a combined inhibitor of water glass and sodium sulfate, adding a fine selection agent, heating and stirring, and then diluting to 35 mass percent;
s4, carrying out five times of blank concentration on the scheelite rough concentrate processed in the step S3 to obtain scheelite concentrate;
s5, selecting the molybdenum ore treated in the S4, adding a drum screen at a molybdenum selection tailing section, and screening and recovering the target minerals through the drum screen;
the addition amount of the roughing grouping agent and the concentration grouping agent relative to the mass of the raw ore is both 200-500 g/t; the roughing agent comprises an FX-6 type collecting agent, vegetable oleic acid, soda ash and a condensate of alkylphenol and ethylene oxide, and the roughing agent is composed of the FX-6 type collecting agent, the vegetable oleic acid, the soda ash, the condensate of alkylphenol and ethylene oxide according to the mass ratio of 10:10:10: 1; the concentrating group agent comprises FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate, and the concentrating group agent is composed of FX-6 type collecting agent, waste engine oil and n-butyl xanthogenate according to the mass ratio of 10:10: 1.
8. The separation and recovery process of ultra-low-grade tungsten-molybdenum ore according to claim 7, characterized in that: in S3, the addition amount of the combined inhibitor of water glass and sodium sulfate is set to 1000g-2000g/t relative to the mass of the raw ore.
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| CN101757984B (en) * | 2010-02-07 | 2013-11-06 | 紫金矿业集团股份有限公司 | Beneficiation reagent and method for separating scheelite from complex tungsten ore |
| CN102489407B (en) * | 2011-11-30 | 2013-09-18 | 长沙矿冶研究院有限责任公司 | Mineral processing method for recycling scheelite/molybdenum oxide ores from molybdenum sulfide flotation tailings |
| CN102909130B (en) * | 2012-11-14 | 2016-05-18 | 中湘钨业股份有限公司 | A kind of white tungsten beneficiation method |
| KR101576927B1 (en) * | 2014-07-14 | 2015-12-14 | 한국지질자원연구원 | Beneficiation method of high grade scheelite ore |
| CN104475428B (en) * | 2014-12-02 | 2016-04-06 | 张夫道 | The method of molybdenum tailings harmless process is carried out in low-temperature zone |
| CN106552712A (en) * | 2016-12-07 | 2017-04-05 | 广西大学 | A kind of method that Mo-bearing Iron Ores are reclaimed in the mine tailing from scheelite |
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