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Method for improving copper and molybdenum grades in high-sulfur hornstone copper and molybdenum ore flotation concentrate

A technology for flotation concentrate, copper and molybdenum, applied in flotation, solid separation and other directions, can solve the problems of the meaningless separation of copper and molybdenum in mixed concentrate, low grade of copper and molybdenum in mixed concentrate, serious molybdenite flotation and other problems , to achieve the effect of easy implementation, scientific and reasonable method, and prevention of loss

Inactive Publication Date: 2018-11-20
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For high-sulfur hornfaction copper-molybdenum ores, the use of conventional mixed flotation processes and reagents will lead to low grades of copper and molybdenum in the mixed concentrate, which cannot be sold normally. This is because pyrite is difficult to suppress during the flotation process. If the copper grade of the mixed flotation concentrate is to be qualified, a large amount of lime must be added in the flotation to prevent the pyrite from floating up. However, too much lime added will seriously affect the flotation of the molybdenite, and the grade of molybdenum in the mixed concentrate is extremely low. The separation of copper and molybdenum in the subsequent mixed concentrate is meaningless

Method used

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  • Method for improving copper and molybdenum grades in high-sulfur hornstone copper and molybdenum ore flotation concentrate
  • Method for improving copper and molybdenum grades in high-sulfur hornstone copper and molybdenum ore flotation concentrate
  • Method for improving copper and molybdenum grades in high-sulfur hornstone copper and molybdenum ore flotation concentrate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Include the following steps:

[0021] a. Place the high-sulfur hornfellow copper-molybdenum ore with a particle size of -2mm in a ball mill for grinding; put kerosene in the ball mill for grinding, and the -0.074mm content in the obtained grinding product is 68%, and the pulp concentration is 28 %;

[0022] b. the grinding product obtained in step a enters the flotation machine, and puts lime into it, and stirs for 5 minutes;

[0023] c. Add hydrocarbyl dithiocarbonate to the slurry formed in step b, and stir for 2 minutes;

[0024] d. Add isopropyl ethyl ammonium sulfate fat to the pulp obtained in step c, and stir for 2min;

[0025] e. The pulp in step d begins roughing operation in the flotation machine, and after the roughing operation, three times of concentration and three times of scavenging are carried out to obtain copper-molybdenum mixed concentrate and tailings;

[0026] The amount of kerosene added in step a of the present invention is 35g / t;

[0027] Th...

Embodiment 2

[0032] Include the following steps:

[0033] a. Place the high-sulfur hornfellow copper-molybdenum ore with a particle size of -2mm in a ball mill for grinding; put kerosene in the ball mill for grinding, and the -0.074mm content in the obtained grinding product is 70%, and the pulp concentration is 30 %;

[0034] b. the grinding product obtained in step a enters the flotation machine, and puts lime, and stirs for 6 minutes;

[0035] c. adding hydrocarbyl dithiocarbonate to the slurry formed in step b, and stirring for 3 minutes;

[0036] d. Add isopropyl ethyl ammonium sulfate to the pulp obtained in step c, and stir for 3 minutes;

[0037] e. The pulp in step d begins roughing operation in the flotation machine, and after the roughing operation, three times of concentration and three times of scavenging are carried out to obtain copper-molybdenum mixed concentrate and tailings;

[0038] The amount of kerosene added in step a of the present invention is 40g / t;

[0039] Th...

Embodiment 3

[0044] Include the following steps:

[0045] a. Place the high-sulfur hornfellow copper-molybdenum ore with a particle size of -2mm in a ball mill for grinding; put kerosene in the ball mill for grinding, and the -0.074mm content in the obtained grinding product is 72%, and the pulp concentration is 32 %;

[0046] b. the grinding product obtained in step a enters the flotation machine, and puts lime into it, and stirs for 7 minutes;

[0047] c. adding hydrocarbyl dithiocarbonate to the slurry formed in step b, stirring for 4min;

[0048] d. Add isopropyl ethyl ammonium sulfate to the pulp obtained in step c, and stir for 4min;

[0049] e. The pulp in step d begins roughing operation in the flotation machine, and after the roughing operation, three times of concentration and three times of scavenging are carried out to obtain copper-molybdenum mixed concentrate and tailings;

[0050] The amount of kerosene added in step a of the present invention is 45g / t;

[0051]The lime ...

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Abstract

The invention relates to a method for improving copper and molybdenum grades in high-sulfur hornstone copper and molybdenum ore flotation concentrate, and belongs to copper and molybdenum separation methods in the ore processing field. High-sulfur hornstone copper and molybdenum ore is put into a ball mill to be ground; kerosene is put into the ball mill for grinding the ore, the pulp concentration is 30%, the mixture enters a flotation machine, lime is added, stirring is conducted, alkyl dithiocarbonate and isopropyl ethyl ammonium thioester are added and stirred, roughing operation is conducted in the flotation machine, and three times of concentration and three times of scavenging are performed after roughing operation. The surface of molybdenite is passivated through the kerosene, theinfluence on molybdenum from lime is eliminated, iron pyrite is restrained by adding the lime, the grade of copper in the mixed concentrate is improved, two types of collecting agents are used cooperatively, flotation of copper and molybdenum is ensured, lime is added again in the three times of concentration, the iron pyrite is restrained, and the grades of copper and molybdenum in the mixed concentrate are further improved.

Description

technical field [0001] The invention relates to a method for separating copper and molybdenum in the field of mineral processing, in particular to a method for improving the grade of copper and molybdenum in the flotation concentrate of high-sulfur hornfelite copper-molybdenum ore. Background technique [0002] The reserves of copper-molybdenum ore in the world are very large, and my country's copper-molybdenum ore is in the stage of high-speed development. At present, the main separation process for copper-molybdenum ore is copper-molybdenum mixed flotation-copper-molybdenum separation process, and copper-molybdenum separation uses floating molybdenum The realization of the copper suppression process requires the copper grade in the mixed flotation concentrate to be qualified. For high-sulfur hornfaction copper-molybdenum ores, the use of conventional mixed flotation processes and reagents will lead to low grades of copper and molybdenum in the mixed concentrate, which canno...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/002B03D1/012B03B1/00B03B1/04B03D101/06B03D101/02B03D103/02
CPCB03B1/00B03B1/04B03D1/00B03D1/002B03D1/012B03D2201/02B03D2201/06B03D2203/02
Inventor 于鸿宾张磊赵明福郝福来郑烨宋超孙东阳张国刚解钊赵艳宾刘璇瑶
Owner CHANGCHUN GOLD RES INST