CN111558463A - Combined collecting agent for improving molybdenum recovery rate of low-copper high-molybdenum ore and application process thereof - Google Patents

Combined collecting agent for improving molybdenum recovery rate of low-copper high-molybdenum ore and application process thereof Download PDF

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CN111558463A
CN111558463A CN202010348236.XA CN202010348236A CN111558463A CN 111558463 A CN111558463 A CN 111558463A CN 202010348236 A CN202010348236 A CN 202010348236A CN 111558463 A CN111558463 A CN 111558463A
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molybdenum
copper
low
recovery rate
concentrate
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CN111558463B (en
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杨俊龙
郭艳华
郭海宁
赵天岩
胡延明
包玺琳
苗梁
罗刚
彭贵熊
李福兰
郭臻雅
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Northwest Research Institute of Mining and Metallurgy
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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
    • B03D1/008—Organic compounds containing oxygen
    • 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
    • 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
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/02—Collectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores
    • B03D2203/04—Non-sulfide ores
    • 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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  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention relates to a combined collecting agent for improving the molybdenum recovery rate of low-copper high-molybdenum ores and an application process thereof, wherein the combined collecting agent is prepared from the following raw materials in parts by weight: 2-5 ℃ higher than 220 ℃ of fractionation grade kerosene; 1-2 parts of heavy wax; 2-3 parts of motor oil; 1-2 parts of tricyclic aromatic hydrocarbon; and v, 1-3% of fatty acid polyethylene alcohol ester as an emulsifier. The method has the advantages of simple process flow, strong applicability, low production cost, high molybdenum recovery rate and easy industrial popularization; the novel combined collecting agent which has good stability, a certain amount of aromatic hydrocarbons with large molecules, high viscosity, easy adsorption of coarse-grained ore and strong collecting capacity is synthesized after the emulsifier is adopted for emulsification, and the recovery rate of molybdenum in the low-copper high-molybdenum ore can be effectively improved. The application process comprises the steps of copper-molybdenum mixed flotation, copper-molybdenum separation, molybdenum rough concentrate concentration and the like by adding the combined collecting agent, so that copper concentrate and molybdenum concentrate with better indexes are finally obtained, and the high-efficiency recovery of molybdenum in low-copper high-molybdenum ores can be realized.

Description

Combined collecting agent for improving molybdenum recovery rate of low-copper high-molybdenum ore and application process thereof
Technical Field
The invention belongs to the technical field of mineral processing, and particularly relates to a combined collecting agent for improving the molybdenum recovery rate of low-copper high-molybdenum ores and an application process thereof.
Background
The molybdenum resource in China is very abundant, the reserve of the molybdenum resource accounts for about 25 percent of the total reserve of the molybdenum in the world, is second only to the United states and second in the world, and is one of six dominant mineral resources in China. Copper-molybdenum ore is one of the main sources for obtaining molybdenum concentrate, and countries handling copper-molybdenum ore abroad mainly include the united states, canada, chile and the like. The consumption of copper and molybdenum ore resources in China is large, and the development and utilization significance of low-grade copper and molybdenum ores is enhanced.
In the existing production process of low-copper high-molybdenum ore, the ore grinding fineness can not meet the requirement, so that the ore particles are thicker; meanwhile, because the copper content of the low-copper high-molybdenum ore is lower, the yield is lower during copper-molybdenum mixed flotation, and the problems of higher molybdenum content in tailings, low molybdenum recovery rate and the like exist.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a combined collector which has better stability and strong collecting capability and can improve the molybdenum recovery rate of low-copper high-molybdenum ores and an application process thereof. The molybdenum in the low-copper high-molybdenum ore is recovered to the maximum extent. Carrying out copper and molybdenum mixed roughing, concentration and copper and molybdenum separation by adopting a combined collecting agent to obtain copper concentrate, and obtaining molybdenum concentrate after molybdenum concentration.
The invention relates to a combined collecting agent for improving the molybdenum recovery rate of low-copper high-molybdenum ores, which is characterized by being prepared from the following raw materials in parts by weight: 2-5 ℃ higher than 220 ℃ of fractionation grade kerosene; 1-2 parts of heavy wax; 2-3 parts of motor oil; 1-2 parts of tricyclic aromatic hydrocarbon; and v, 1-3% of fatty acid polyethylene alcohol ester as an emulsifier.
In the technical scheme of the combined collector for improving the molybdenum recovery rate of the low-copper high-molybdenum ore, the further preferable technical scheme is characterized in that:
1. the feed is prepared from the following raw materials in parts by weight: fractionation grade kerosene 2 above 220 ℃; 1 part of heavy wax; motor oil 2; a tricyclic aromatic hydrocarbon 1; emulsifier v fatty acid polyglycol ester 1;
2. the feed is prepared from the following raw materials in parts by weight: fractionation grade kerosene 5 above 220 ℃; heavy wax 2; motor oil 3; a tricyclic aromatic hydrocarbon 2; emulsifier v fatty acid polyethylene alcohol ester 3;
3. the feed is prepared from the following raw materials in parts by weight: 3.5 of fraction grade kerosene with the temperature higher than 220 ℃; 1.5 parts of heavy wax; 2.5 parts of motor oil; tricyclic aromatic hydrocarbon 1.5; emulsifier v fatty acid polyethylene alcohol ester 2.
The invention relates to an application process of a combined collecting agent for improving the molybdenum recovery rate of low-copper high-molybdenum ores, which is characterized by comprising the following steps of: grinding: grinding raw ore, wherein the content of the ground ore with the fineness of less than 0.074mm is 50% -60%, the grinding concentration is 50-60%, and a regulator is added during grinding, wherein the addition amount is 0-1000 g/t; ② copper molybdenum mixed flotation: adding a combined collecting agent into the ore pulp with the mass percentage concentration of 30-35% prepared in the step I, wherein the using amount of the combined collecting agent is 90-120 g/t, performing primary roughing and scavenging, and performing blank concentration twice to obtain copper-molybdenum mixed concentrate and tailings; ③ separating copper and molybdenum: after the copper-molybdenum bulk concentrate obtained in the second step is subjected to size mixing, adding a copper inhibitor, namely water glass and sodium sulfide, in a ratio of 1:4 and a dosage of 1500-1800 g/t, adding a combined collecting agent in a dosage of 50-60 g/t to perform copper-molybdenum separation, and obtaining copper concentrate and molybdenum rough concentrate; fourthly, molybdenum selection: and c, adding inhibitor water glass and sodium sulfide in a ratio of 1:2 after the molybdenum rough concentrate obtained in the step c is subjected to size mixing, wherein the using amount is 100-300 g/t, and carrying out concentration on the molybdenum rough concentrate to obtain molybdenum concentrate.
In the technical scheme of the combined collector for improving the molybdenum recovery rate of the low-copper high-molybdenum ore, the further preferable technical scheme is characterized in that:
1. the ore grinding fineness of 55% is less than 0.074 mm;
2. and the molybdenum rough concentrate concentration times are three times.
Compared with the prior art, the invention has the beneficial effects that: (1) the combined collector provided by the invention is obtained by emulsifying multiple single collectors, has the advantages of good stability, high viscosity, a certain amount of macromolecular aromatic hydrocarbon, easy adsorption of coarser granular ore and strong collecting capability, and can effectively improve the recovery rate of molybdenum in low-copper high-molybdenum ore; (2) the method has the advantages of simple process flow, less times of molybdenum rough concentrate concentration and effective saving of production cost. The method has the advantages of simple process flow, strong applicability, low production cost, high molybdenum recovery rate, easy industrial popularization and capability of realizing the high-efficiency recovery of molybdenum in low-copper high-molybdenum ores.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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 collector for improving the molybdenum recovery rate of low-copper high-molybdenum ores is prepared from the following raw materials in parts by weight: 2-5 ℃ higher than 220 ℃ of fractionation grade kerosene; 1-2 parts of heavy wax; 2-3 parts of motor oil; 1-2 parts of tricyclic aromatic hydrocarbon; and v, 1-3% of fatty acid polyethylene alcohol ester as an emulsifier.
Example 2, the combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ore according to example 1 is prepared from the following raw materials in parts by weight: fractionation grade kerosene 2 above 220 ℃; 1 part of heavy wax; motor oil 2; a tricyclic aromatic hydrocarbon 1; emulsifier v fatty acid polyethylene alcohol ester 1.
Example 3, the combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ore according to example 1 or 2 is prepared from the following raw materials in parts by weight: fractionation grade kerosene 5 above 220 ℃; heavy wax 2; motor oil 3; a tricyclic aromatic hydrocarbon 2; emulsifier v fatty acid polyethylene alcohol ester 3.
Example 4, the combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ore according to example 1 or 2 or 3 is prepared from the following raw materials in parts by weight: 3.5 of fraction grade kerosene with the temperature higher than 220 ℃; 1.5 parts of heavy wax; 2.5 parts of motor oil; tricyclic aromatic hydrocarbon 1.5; emulsifier v fatty acid polyethylene alcohol ester 2.
Example 5, an application process of a combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ores comprises the following steps: grinding: grinding raw ore, wherein the content of the ground ore with the fineness of less than 0.074mm is 50% -60%, the grinding concentration is 50-60%, and a regulator is added during grinding, wherein the addition amount is 0-1000 g/t; ② copper molybdenum mixed flotation: adding a combined collecting agent into the ore pulp with the mass percentage concentration of 30-35% prepared in the step I, wherein the using amount of the combined collecting agent is 90-120 g/t, performing primary roughing and scavenging, and performing blank concentration twice to obtain copper-molybdenum mixed concentrate and tailings; ③ separating copper and molybdenum: after the copper-molybdenum bulk concentrate obtained in the second step is subjected to size mixing, adding a copper inhibitor, namely water glass and sodium sulfide, in a ratio of 1:4 and a dosage of 1500-1800 g/t, adding a combined collecting agent in a dosage of 50-60 g/t to perform copper-molybdenum separation, and obtaining copper concentrate and molybdenum rough concentrate; fourthly, molybdenum selection: and c, adding inhibitor water glass and sodium sulfide in a ratio of 1:2 after the molybdenum rough concentrate obtained in the step c is subjected to size mixing, wherein the using amount is 100-300 g/t, and carrying out concentration on the molybdenum rough concentrate to obtain molybdenum concentrate. The middling is also added after the molybdenum rough concentrate is refined; the regulator is lime. According to the invention, the emulsifier is adopted to emulsify to synthesize the novel combined collecting agent which has good stability, a certain amount of aromatic hydrocarbons with larger molecules, high viscosity, easiness in adsorbing coarse-grained ore and strong collecting capability, and the recovery rate of molybdenum in the low-copper high-molybdenum ore can be effectively improved.
Example 6, the process of applying the combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ore according to example 5 comprises the following steps: grinding: grinding the raw ore, wherein the content of the grinding fineness of less than 0.074mm is 50%, the grinding concentration is 50%, and a regulator is added during grinding, wherein the addition amount is 10 g/t; ② copper molybdenum mixed flotation: adding a combined collecting agent into the ore pulp with the mass percentage concentration of 30% prepared in the step I, performing one-time roughing and one-time scavenging, and performing two-time blank concentration to obtain copper-molybdenum bulk concentrate and tailings; ③ separating copper and molybdenum: after the copper-molybdenum bulk concentrate obtained in the second step is subjected to size mixing, adding a copper inhibitor, namely water glass and sodium sulfide, in a ratio of 1:4 and a dosage of 1500g/t, adding a combined collecting agent, and performing copper-molybdenum separation by using a dosage of 50g/t to obtain copper concentrate and molybdenum rough concentrate; fourthly, molybdenum selection: and c, adding inhibitor water glass and sodium sulfide in a ratio of 1:2 after the molybdenum rough concentrate obtained in the step c is subjected to size mixing, wherein the using amount is 100g/t, and carrying out concentration on the molybdenum rough concentrate to obtain molybdenum concentrate.
Example 7, the process of using the combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ore according to example 5 or 6 comprises the following steps: grinding: grinding raw ore, wherein the content of the grinding fineness is less than 0.074mm and is 60%, the grinding concentration is 60%, and a regulator is added during grinding, wherein the addition amount is 1000 g/t; ② copper molybdenum mixed flotation: adding a combined collecting agent into the ore pulp with the mass percentage concentration of 35% prepared in the step I, performing one-time roughing and one-time scavenging, and performing two-time blank concentration to obtain copper-molybdenum bulk concentrate and tailings; ③ separating copper and molybdenum: after the copper-molybdenum bulk concentrate obtained in the second step is subjected to size mixing, adding a copper inhibitor, namely water glass and sodium sulfide in a ratio of 1:4 and an amount of 1800g/t, adding a combined collecting agent in an amount of 60g/t to perform copper-molybdenum separation, and obtaining copper concentrate and molybdenum rough concentrate; fourthly, molybdenum selection: and c, adding inhibitor water glass and sodium sulfide in a ratio of 1:2 after the molybdenum rough concentrate obtained in the step c is subjected to size mixing, wherein the using amount is 300g/t, and carrying out concentration on the molybdenum rough concentrate to obtain molybdenum concentrate.
Example 8, the process of using the combined collector for improving molybdenum recovery from low-copper high-molybdenum ores according to any one of examples 5 to 7, includes the following steps: grinding: grinding raw ore, wherein the content of the grinding fineness is less than 0.074mm and is 55%, the grinding concentration is 55%, and a regulator is added during grinding, wherein the adding amount is 500 g/t; ② copper molybdenum mixed flotation: adding a combined collecting agent into the ore pulp with the mass percentage concentration of 30-35% prepared in the step I, performing primary roughing and scavenging, and performing blank concentration twice to obtain copper-molybdenum mixed concentrate and tailings, wherein the using amount of the combined collecting agent is 100 g/t; ③ separating copper and molybdenum: after the copper-molybdenum bulk concentrate obtained in the second step is subjected to size mixing, adding a copper inhibitor, namely water glass and sodium sulfide in a ratio of 1:4 and a dosage of 1600g/t, adding a combined collecting agent in a dosage of 55g/t to perform copper-molybdenum separation, and obtaining copper concentrate and molybdenum rough concentrate; fourthly, molybdenum selection: and (4) adding inhibitor water glass and sodium sulfide in a ratio of 1:2 after the molybdenum rough concentrate obtained in the step (III) is subjected to size mixing, wherein the using amount is 200g/t, and carrying out concentration on the molybdenum rough concentrate to obtain molybdenum concentrate.
Example 9, in the application process of the combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ore according to any one of examples 5 to 8, the ore grinding fineness of the step (i) is less than 0.074mm, and the content of the ore grinding fineness is 55%.
Example 10, the process of using the combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ore according to any one of examples 5 to 9, wherein the molybdenum rough concentrate concentration time is three times.
Example 11, Xinjiang Soxhlet 1 Point of Low copper and high molybdenum ore, copper content 0.17%, molybdenum content 0.066%, grinding concentration 55%, adding lime 1000g/t during grinding, grinding fineness less than 0.074mm and content 55%. Adjusting the mass percentage concentration of the ore pulp to 32 percent, adding a combined collecting agent, carrying out one-time roughing and one-time scavenging by using 100g/t, and carrying out two-time blank concentration to obtain copper-molybdenum bulk concentrate and tailings. After the copper-molybdenum bulk concentrate is subjected to size mixing, adding a copper inhibitor, namely water glass, and sodium sulfide in a ratio of 1:4 and a dosage of 1500g/t, adding a combined collecting agent A3132, and performing copper-molybdenum separation in a dosage of 55g/t to obtain a copper concentrate and a molybdenum rough concentrate. Adding inhibitor water glass into the obtained molybdenum rough concentrate after size mixing, wherein the proportion of T17 is 1:2, the dosage is 200g/T, and the molybdenum rough concentrate is subjected to concentration for three times to obtain the molybdenum concentrate. Finally, the better indexes of 18.95 percent of copper grade in the copper concentrate, 92.45 percent of copper recovery rate, 49.87 percent of molybdenum grade in the molybdenum concentrate and 70.45 percent of molybdenum recovery rate are obtained.
Example 12, Xinjiang Soxhlet 2 Low-copper high-molybdenum ore, copper content 0.20%, molybdenum content 0.078%, ore grinding concentration 56%, adding lime 800g/t during ore grinding, and grinding fineness less than 0.074mm and content 57%. Adjusting the mass percentage concentration of the ore pulp to be 33 percent, adding the combined collecting agent, carrying out one-time roughing and one-time scavenging by using the amount of 110g/t, and carrying out two-time blank concentration to obtain copper-molybdenum bulk concentrate and tailings. After the copper-molybdenum bulk concentrate is subjected to size mixing, adding a copper inhibitor, namely water glass, and sodium sulfide in a ratio of 1:4 and a dosage of 1600g/t, adding a combined collecting agent A3132 in a dosage of 60g/t, and performing copper-molybdenum separation to obtain a copper concentrate and a molybdenum rough concentrate. Adding inhibitor water glass into the obtained molybdenum rough concentrate after size mixing, wherein the proportion of T17 is 1:2, the dosage is 250g/T, and the molybdenum rough concentrate is subjected to concentration for three times to obtain the molybdenum concentrate. Finally, the better indexes of 18.73 percent of copper grade in the copper concentrate, 93.73 percent of copper recovery rate, 48.31 percent of molybdenum grade in the molybdenum concentrate and 72.98 percent of molybdenum recovery rate are obtained.
Example 13, Xinjiang Soxhlet 3 points of Low copper and high molybdenum ore, copper content 0.15%, molybdenum content 0.060%, grinding concentration 56.5%, adding lime 600g/t during grinding, grinding fineness less than 0.074mm, content 54.5%. Adjusting the mass percentage concentration of the ore pulp to be 33 percent, adding the combined collecting agent, carrying out one-time roughing and one-time scavenging by using the amount of 90g/t, and carrying out two-time blank concentration to obtain copper-molybdenum bulk concentrate and tailings. After the copper-molybdenum bulk concentrate is subjected to size mixing, adding a copper inhibitor, namely water glass, and sodium sulfide in a ratio of 1:4 and a dosage of 1500g/t, adding a combined collecting agent A3132, and performing copper-molybdenum separation in a dosage of 52g/t to obtain a copper concentrate and a molybdenum rough concentrate. Adding inhibitor water glass into the obtained molybdenum rough concentrate after size mixing, wherein the proportion of T17 is 1:2, the dosage is 150g/T, and the molybdenum rough concentrate is subjected to concentration for three times to obtain the molybdenum concentrate. Finally, the better indexes of 18.24 percent of copper grade in the copper concentrate, 91.98 percent of copper recovery rate, 46.42 percent of molybdenum grade in the molybdenum concentrate and 70.22 percent of molybdenum recovery rate are obtained.
The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept thereof within the scope of the present invention.

Claims (7)

1. The combined collecting agent for improving the molybdenum recovery rate of the low-copper high-molybdenum ore is characterized by being prepared from the following raw materials in parts by weight: 2-5 ℃ higher than 220 ℃ of fractionation grade kerosene; 1-2 parts of heavy wax; 2-3 parts of motor oil; 1-2 parts of tricyclic aromatic hydrocarbon; and v, 1-3% of fatty acid polyethylene alcohol ester as an emulsifier.
2. The combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ores according to claim 1, which is prepared from the following raw materials in parts by weight: fractionation grade kerosene 2 above 220 ℃; 1 part of heavy wax; motor oil 2; a tricyclic aromatic hydrocarbon 1; emulsifier v fatty acid polyethylene alcohol ester 1.
3. The combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ores according to claim 1, which is prepared from the following raw materials in parts by weight: fractionation grade kerosene 5 above 220 ℃; heavy wax 2; motor oil 3; a tricyclic aromatic hydrocarbon 2; emulsifier v fatty acid polyethylene alcohol ester 3.
4. The combined collector for improving the molybdenum recovery rate of low-copper high-molybdenum ores according to claim 1, which is prepared from the following raw materials in parts by weight: 3.5 of fraction grade kerosene with the temperature higher than 220 ℃; 1.5 parts of heavy wax; 2.5 parts of motor oil; tricyclic aromatic hydrocarbon 1.5; emulsifier v fatty acid polyethylene alcohol ester 2.
5. The application process of the combined collecting agent for improving the molybdenum recovery rate of the low-copper high-molybdenum ore is characterized by comprising the following steps of:
grinding: grinding raw ore, wherein the content of the ground ore with the fineness of less than 0.074mm is 50% -60%, the grinding concentration is 50-60%, and a regulator is added during grinding, wherein the addition amount is 0-1000 g/t;
② copper molybdenum mixed flotation: adding a combined collecting agent into the ore pulp with the mass percentage concentration of 30-35% prepared in the step I, wherein the using amount of the combined collecting agent is 90-120 g/t, performing primary roughing and scavenging, and performing blank concentration twice to obtain copper-molybdenum mixed concentrate and tailings;
③ separating copper and molybdenum: after the copper-molybdenum bulk concentrate obtained in the second step is subjected to size mixing, adding a copper inhibitor, namely water glass and sodium sulfide, in a ratio of 1:4 and a dosage of 1500-1800 g/t, adding a combined collecting agent in a dosage of 50-60 g/t to perform copper-molybdenum separation, and obtaining copper concentrate and molybdenum rough concentrate;
fourthly, molybdenum selection: and c, adding inhibitor water glass and sodium sulfide in a ratio of 1:2 after the molybdenum rough concentrate obtained in the step c is subjected to size mixing, wherein the using amount is 100-300 g/t, and carrying out concentration on the molybdenum rough concentrate to obtain molybdenum concentrate.
6. The application process of the combined collector for improving the molybdenum recovery rate of the low-copper high-molybdenum ore according to claim 5, wherein the combined collector comprises the following steps: the content of the grinding fineness of less than 0.074mm in the step I is 55 percent.
7. The application process of the combined collector for improving the molybdenum recovery rate of the low-copper high-molybdenum ore according to claim 2, characterized in that: and the molybdenum rough concentrate concentration times are three times.
CN202010348236.XA 2020-04-28 2020-04-28 Combined collecting agent for improving molybdenum recovery rate of low-copper high-molybdenum ore and application process thereof Active CN111558463B (en)

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Citations (5)

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