Filtrating process of copper electrolysis supernatant

Abstract

The invention provides a filtering process of copper electrolytic supernatant, in which the purpose is achieved in this way that according to the filtering process of copper electrolytic supernatant, the electrolyte, flowing back to a low tank from a electrolytic cell through a circulating tube, is then sent to a high tank through a circulating pump. Afterwards, the electrolyte is in gravity flow into the electrolytic cell again from the high tank, and the electrolytic cell bottom is provided with a valve for the connection with a supernatant tube communicated to a supernatant receiving tank. After sent to a filter press for filtering through a filtering pump, the electrolyte returns to the high tank of the electrolyte circulating system again, entering the circulating system to recycle the supernatant separately. The electrolyte then returns to the electrolyte circulating system after the filtering, so that the suspended substances in the electrolyte is greatly reduced and dropped to below 10mg / L from the original 20-100mg / L. Therefore, the quality of cathode copper is ensured.

Description

technical field [0001] The invention relates to a hydrometallurgical process, in particular to an improvement of a supernatant liquid filtration process in an electrolytic copper process. Background technique [0002] In the wet electrolytic copper process, the supernatant in the electrolytic cell is directly returned to the electrolyte circulation system when the anode is replaced, which causes the electrolyte mixed when the anode is raised to enter the electrolyte circulation system, which increases the suspended matter in the electrolyte and affects the cathode. quality of copper. as attached figure 1 As shown, the current process is generally that the electrolyte flows back to the lower tank 6 from the electrolytic tank 1 through the circulation pipe 3, and then is sent to the upper tank 7 by the circulation pump 5, and the electrolyte flows into the electrolytic tank 1 from the upper tank 7, so that form a circulatory system. When cleaning the tank, the turbid electr...

AI Technical Summary

Problems solved by technology

When cleaning the tank, the turbid electrolyte in the tank flows directly into the lower tank 5 through the supernatant liquid pipe 4 and enters the circulation system, resulting in a high content of suspended solids in the electrolyte

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