A kind of chalcopyrite leaching slag cyclone desulfurization process

Abstract

The invention discloses a chalcopyrite leaching slag swirl desulfurization process. First, the evenly mixed chalcopyrite leaching is sent directly to a shaking table for roughing, and the light products are pumped into a cyclone for selection to obtain a swirling flow. The overflow and underflow of the device, the heavy products of the shaking table and the underflow of the cyclone are combined into the countercurrent washing process, and the washing liquid obtained after washing enters the extraction-electrowinning copper extraction process, and the washing residue is discarded; the overflow of the cyclone enters the concentrator for further processing. One-stage dehydration, the underflow of the concentrator enters the filter press for two-stage dehydration, the overflow of the concentrator and the filter press filtrate are combined and then directly enters the extraction-electrowinning copper extraction process, and the filter cake of the filter press is a high-quality elemental sulfur resource. The invention combines the cyclone and the shaker, and removes elemental sulfur from the copper leaching slag without any chemicals and flotation machines. The process is simple, the investment is small, the power consumption is small, and the operating cost is low. On the premise of efficiency, safety and economy are more optimized.

Description

technical field [0001] The invention relates to a chalcopyrite leaching slag desulfurization process, in particular to a separation technology for removing elemental sulfur from the leaching slag of the chalcopyrite atmospheric pressure chemical oxidation leaching process. Background technique [0002] The traditional method used to extract copper from chalcopyrite is mainly pyrometallurgy. However, pyrometallurgy has defects such as large investment, high cost, and serious pollution, which is increasingly incompatible with the requirements of sustainable development. [0003] In this context, the research on the hydrometallurgy process of copper has been greatly developed. Metallurgists in various countries have paid more and more attention to the research and development of the hydrometallurgy process of chalcopyrite. Copper processes mainly include atmospheric pressure chemical oxidation leaching process (using ferric chloride or ferric sulfate as oxidant), biological oxi...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the shortcomings of the existing chalcopyrite leaching slag desulfurization process, such as complex recovery process equipment, poor safety, and uneconomical, the present invention provides a brass leaching process that is superior in safety and economy under the premise of ensuring recovery efficiency. Ore leaching slag cyclone desulfurization process

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