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Mine selecting and copper extracting process

A process and technology for flotation tailings, applied in flotation, solid separation and other directions, can solve the problems of high copper content in slag tailings, low copper content in recovered concentrates, and high production costs

Inactive Publication Date: 2013-06-19
YANGGU XIANGGUANG COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the existing flotation process is adopted, the copper grade of recovered concentrate will be low, the copper content of slag tailings will be high, the copper recovery rate will be low, and the production cost will be high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] After smelting, the slag containing copper oxide, natural copper, copper sulfide minerals, copper ferrite minerals and copper-iron symbiotic slag with a copper content of 10wt% is subjected to one-stage grinding, so that 55% to 65% of the slag becomes Fineness - 200 mesh pulp, put the slag and pulp after one-stage grinding into the flotation stirring tank containing collector Z-200#, butyl xanthate and foaming agent terpineol oil for one-stage flotation to obtain the first stage One slag concentrate and the first flotation tailings, the mass ratio of Z-200#, butyl xanthate and pinitol oil is 1:4:2; the first flotation tailings are subjected to secondary grinding, Make 90% to 95% of the tailings have a particle size of -325 mesh, add a sodium sulfide solution with a concentration of 10wt% to the slag after second-stage grinding per ton, and use a sodium sulfide dosage of 200g / t, lightly activate for 3 minutes , adjust the pH of the slightly activated slag to be 7-9, add ...

Embodiment 2

[0044] After smelting, the slag containing 8wt% copper oxide minerals, natural copper, copper sulfide minerals, copper ferrite minerals and copper-iron symbiotic slag is subjected to one-stage grinding, so that 55% to 65% of the slag becomes Make a pulp with a fineness of -200 mesh, put the slag and pulp after a stage of grinding into a flotation stirring tank containing a collector Z-200#, butyl xanthate and a foaming agent terpineol oil for a stage of flotation, Obtain the first slag concentrate and one-stage flotation tailings, the mass ratio of Z-200#, butyl xanthate and pinitol oil is 1:4:2; the one-stage flotation tailings are subjected to two-stage grinding, Make 90%~95% of the tailings into slag with a fineness of -325 mesh, and add 60kg of ammonia water with a concentration of 28wt% per ton of the slag after the second-stage grinding to activate for 15 minutes, and then add the slag with a concentration of 10wt% Sodium sulfide solution, the amount of sodium sulfide is...

Embodiment 3

[0046] After smelting, the slag containing 10wt% copper oxide minerals, natural copper, copper sulfide minerals, copper ferrite minerals and copper-iron symbiotic slag is subjected to one-stage grinding, so that 55% to 65% of the slag becomes Make a pulp with a fineness of -200 mesh, put the slag and pulp after a stage of grinding into a flotation stirring tank containing a collector Z-200#, butyl xanthate and a foaming agent terpineol oil for a stage of flotation, Obtain the first slag concentrate and one-stage flotation tailings, the mass ratio of Z-200#, butyl xanthate and pinitol oil is 1:4:2; the one-stage flotation tailings are subjected to two-stage grinding, Make 90%-95% of the tailings into slag with a fineness of -325 mesh, adjust the pH of the slag after the second-stage grinding to alkaline 7-9, add 800g / t of water glass, and then enter the Carry out two stages of flotation in the flotation stirred tank of base xanthate and foaming agent terpineol oil, obtain the s...

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Abstract

The invention relates to the technical field of copper smelting and provides a mine selecting and copper extracting process. The mine selecting and copper extracting process comprises the following steps: a) primary grinding of copper slag is conducted; b) primary select flotation of slag obtained in the step a) is conducted, and primary slag concentrate and primary select flotation of tailings are obtained; c) secondary grinding of the primary select flotation of tailings is conducted; d) slag obtained in the step c) is activated, and secondary select flotation of activated slag is conducted. Copper in smelting slag is extracted repeatedly in a staged mode, so that copper content in the slag is reduced, and waste slag standard is reached. An experimental result shows that the copper content of slag tailings obtained is 0.30wt%-0.35wt% after select flotation and activating, and the waste slag standard is reached.

Description

technical field [0001] The invention relates to the technical field of copper smelting, in particular to a copper extraction process through ore dressing. Background technique [0002] With the development of society, copper ore resources are decreasing day by day, and low-grade and high-impurity copper ore resources are constantly being developed, which makes the copper grade of copper concentrate that can be used for copper smelting continue to decrease, and the composition of copper concentrate is becoming more and more complex. [0003] In order to adapt to changes in the composition of copper concentrates, pyrometallurgy, as the main process of copper smelting, has been continuously optimized. By increasing the oxidation strength, pyrometallurgical smelting, especially the impurity removal ability of the smelting process, has been improved, and high-grade matte copper has been prepared. But the ensuing problem is that the amount of smelting slag is large, the copper con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B1/00
Inventor 耿联胜
Owner YANGGU XIANGGUANG COPPER
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