Floatation separation process for galenite and chalcopyrite

A technology of galena and chalcopyrite, applied in flotation, solid separation, etc., can solve problems such as environmental pollution, high toxicity of dichromate, difficult to handle chromium ions, etc., and achieve low production cost and no pollution in the process Effect

Inactive Publication Date: 2010-06-23
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used inhibitor of lead is dichromate or dichromate combined with sodium sulfite (or sodium thiosulfate), but dichromate is very toxic and chromium ions are diffi

Method used

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  • Floatation separation process for galenite and chalcopyrite
  • Floatation separation process for galenite and chalcopyrite
  • Floatation separation process for galenite and chalcopyrite

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Grind galena and chalcopyrite to -0.074mm and then mix them by equal weight. Use sodium humate and calcium chloride to mix and stir for 5 minutes. The dosage of sodium humate is 160mg / L, and the dosage of calcium chloride is 8× 10 -4 mol / L, the collector is sodium butyl xanthate, and the concentration of the collector is 1×10 -4 mol / L, stirring for 2 minutes, adding foaming agent is butyl ether alcohol, the dosage is suitable to produce uniform foam, stirring time is 2 minutes, flotation for 8 minutes. The results of flotation separation are shown in Table 1. For the convenience of comparing the separation results, Table 1 also shows the flotation separation results of potassium dichromate+sodium thiosulfate and potassium dichromate+sodium sulfite to suppress lead and float copper.

Embodiment 2

[0018] Grind galena and chalcopyrite to -0.074mm and then mix them by equal weight. Use sodium humate and calcium chloride to mix and stir for 5 minutes. The dosage of sodium humate is 160mg / L, and the dosage of calcium chloride is 8× 10 -4 mol / L, the collector is O-isopropyl-N-ethylthiocarbamate, and the concentration of the collector is 1.7×10 -4 mol / L, stirring for 2 minutes, flotation for 8 minutes. The results of flotation separation are shown in Table 1. In order to compare the separation results, the flotation separation results of potassium dichromate + sodium thiosulfate and potassium dichromate + sodium sulfite to suppress lead and float copper are also given.

[0019] Table 1 Galena and chalcopyrite flotation separation results

[0020]

[0021]

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Abstract

The invention relates to a floatation separation process for galenite and chalcopyrite. The process adopts the match of sodium humate and calcium chloride to inhibit the galenite; and sodium xanthogenate or O-isopropyl-N-ethylthionocarbamate is used as a collecting agent and butyl ether alcohol, ethyl ether alcohol or terpineol is used as a foaming agent. The combined inhibitor adopted can inhibit the floatation of the galenite; and the chalcopyrite can float upwards; therefore, the floatation separation of the galenite and the chalcopyrite can be achieved; and the process has no pollution and low production cost.

Description

technical field [0001] The invention relates to a flotation separation process of galena and chalcopyrite. Background technique [0002] At present, the flotation separation of galenite and chalcopyrite in mineral processing engineering mainly adopts two principle processes: lead-suppressed floating copper and copper-suppressed floating lead. Since the value of copper is higher than that of lead and the floatability of copper is better than that of lead, so The method of suppressing lead and floating copper is commonly used to realize the separation of copper and lead. The commonly used inhibitor of lead is dichromate or dichromate combined with sodium sulfite (or sodium thiosulfate), but dichromate is very toxic and chromium ions are difficult to handle. Therefore, it is necessary to find a clean process for the separation of galena and chalcopyrite. Contents of the invention [0003] The purpose of the present invention is to provide a process for the flotation separat...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D1/012B03D1/008B03D103/04B03D101/04B03D101/02B03D101/06
Inventor 李文娟宋永胜周桂英姚国成
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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