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Method for reinforcing copper inhibition molybdenum extraction during copper-molybdenum separation

A copper-molybdenum and copper inhibitor technology, which is applied in the separation of copper and molybdenum, strengthens copper suppression and extraction of molybdenum, and can solve problems such as difficult control of process indicators, large fluctuations in recovery rate and product quality, and difficulty in inhibiting secondary copper minerals. The effect of eliminating passivation, improving grade and recovery rate, and avoiding muddy phenomenon

Inactive Publication Date: 2018-06-15
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the secondary copper minerals such as bornite and chalcocite are very difficult to suppress in the flotation process, the conventional copper suppression and floating molybdenum technology is used, the process index is difficult to control, and the recovery rate and product quality fluctuate greatly.

Method used

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  • Method for reinforcing copper inhibition molybdenum extraction during copper-molybdenum separation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Include the following steps:

[0024] a. Copper-molybdenum mixed concentrate is pre-cast after rough sweeping. The pre-tailing includes one pre-rougher and three pre-sweeps. After one rougher, three sweeps and five beneficiations, the concentrate foam is obtained;

[0025] b. adding copper inhibitor sodium hydrosulfide to the concentrate foam obtained in step a, the consumption is 180g / t mixed concentrate;

[0026] c. The ore pulp formed in step b enters the mill for regrinding; the mill is a tower mill, and the grinding concentration is 10%;

[0027] d. adding a molybdenum collector to the grinding product obtained in step c, the molybdenum collector is non-polar hydrocarbon oil, and the consumption is 480g / t mixed concentrate;

[0028] e. The product obtained in step d enters the flotation operation of refining 6 to 10 to obtain the final copper concentrate and molybdenum concentrate.

Embodiment 2

[0030] Include the following steps:

[0031] a. Copper-molybdenum mixed concentrate is pre-cast after rough sweeping. The pre-tailing includes one pre-rougher and three pre-sweeps. After one rougher, three sweeps and five beneficiations, the concentrate foam is obtained;

[0032] b. adding copper inhibitor sodium hydrosulfide to the concentrate foam obtained in step a, the consumption is 200g / t mixed concentrate;

[0033] c. The ore pulp formed in step b enters a mill for regrinding; the mill is a tower mill with a grinding concentration of 11%.

[0034] d. adding a molybdenum collector to the grinding product obtained in step c, the molybdenum collector is non-polar hydrocarbon oil, and the consumption is 500g / t mixed concentrate;

[0035] e. The product obtained in step d enters the flotation operation of refining 6 to 10 to obtain the final copper concentrate and molybdenum concentrate.

Embodiment 3

[0037] Include the following steps:

[0038] a. Copper-molybdenum mixed concentrate is pre-cast after rough sweeping. The pre-tailing includes one pre-rougher and three pre-sweeps. After one rougher, three sweeps and five beneficiations, the concentrate foam is obtained;

[0039] b. adding copper inhibitor sodium hydrosulfide to the concentrate foam obtained in step a, the consumption is 220g / t mixed concentrate;

[0040] c. The ore pulp formed in step b enters a mill for regrinding; the mill is a tower mill with a grinding concentration of 12%.

[0041] d. adding molybdenum collector to the grinding product obtained in step c, the molybdenum collector is non-polar hydrocarbon oil, and the consumption is 520g / t mixed concentrate;

[0042] e. The product obtained in step d enters the flotation operation of refining 6 to 10 to obtain the final copper concentrate and molybdenum concentrate.

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Abstract

The invention relates to a method for reinforcing copper inhibition molybdenum extraction during copper-molybdenum separation, and belongs to the field of mineral separation. The method comprises thesteps of a, carrying out beforehand tailing discarding, one-time roughing, three-time scavenging and five-time concentration on copper-molybdenum mixed concentrate, so as to obtain concentrate foam; b, adding a copper inhibitor into the concentrate foam obtained in the step a; c, feeding pulp formed in the step b into a mill to be reground; d, adding a molybdenum collecting agent into an ore grinding product obtained in the step c; and e, carrying out six-time concentration to ten-time concentration flotation on a product obtained in the step d, so as to obtain final copper concentrate and molybdenum concentrate. According to the method, sodium hydrosulfide is added during the regrinding process of five-time concentration foam, the problem that copper minerals are hard to inhibit during the copper-molybdenum separation process is solved, and copper and molybdenum are effectively separated while the argillization phenomenon caused by mass crushing of gangue minerals is avoided through regrinding of five-time concentration foam; and besides, kerosene is added before the reground product enters the next process, so that recovery for molybdenum in follow-up operation is reinforced, andthe recovery rate of molybdenum is increased.

Description

technical field [0001] The invention relates to a method for separating copper and molybdenum in the field of mineral separation, in particular to a method for strengthening copper suppression and extracting molybdenum. Background technique [0002] The reserves of copper-molybdenum ore in the world are very large, and the copper-molybdenum ore in my country is in the stage of high-speed development. The recovery of molybdenum in copper ore has always been a relatively big problem. At present, the sorting process of copper-molybdenum ore rarely adopts the process of priority flotation. The mainstream sorting process is copper-molybdenum mixed flotation. The flotation foam is molybdenum concentrate, and the flotation tailings are copper concentrate. [0003] Since the secondary copper minerals such as bornite and chalcocite are very difficult to suppress during the flotation process, the conventional copper suppression and floating molybdenum technology is used, the process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D1/002B03D1/006B03B1/00B03D101/06B03D101/02B03D103/04
CPCB03B1/00B03D1/002B03D1/006B03D1/02B03D2201/02B03D2201/06B03D2203/04
Inventor 于鸿宾张磊赵明福郝福来郑烨宋超孙东阳张国刚王怀解钊赵艳宾刘璇瑶
Owner CHANGCHUN GOLD RES INST
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