Process for purifying cobalt by electro-depositing cobalt chloride solution through cyclone electrolysis technology and reclaiming residual chlorine

Abstract

The invention discloses a process for purifying cobalt by electro-depositing a cobalt chloride solution through a cyclone electrolysis technology and reclaiming residual chlorine, and belongs to the technical field of hydrometallurgical electro-deposition of nonferrous metals. The process comprises the following steps of: dissolving a cobalt-containing material into acid to remove iron, extracting and purifying with P204 to remove impurities such as copper, zinc and manganese, performing secondary purification, extracting with P507 to separate cobalt and nickel, performing back extraction to obtain the cobalt chloride solution, performing cyclone electro-deposition to obtain high-purity electro-deposited cobalt, delivering the produced residual chlorine to a reclaiming system, burning to form hydrochloric acid, and recycling a hydrochloric acid concentration product. The process is applied to the furthest recycling of the cobalt in cobalt arsenide, cobalt sulfide and cobalt oxide mines and industrial cobalt-containing wastes, and solves the problems of release and discharge of chlorine serving as a harmful gas in the electro-deposition process at the same time; and the chlorine is prepared into the hydrochloric acid product through the shortest flow, and the cyclone electrolysis technology is adopted, so the process is efficient, low in energy consumption, low in production and operating cost, easy and convenient to operate and environment-friendly, effectively solves the produced harmful chlorine and realizes reutilization of waste gas.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal wet smelting electrolytic deposition, and specifically relates to a swirl electrolysis technology for electrolytically purifying cobalt from cobalt-containing materials with high efficiency and environmental protection. Background technique [0002] Cobalt is an important strategic resource and an important raw material for the manufacture of superalloys, hard alloys, magnetic alloys, precision alloys and cobalt-containing compounds. Most of them are used in industries such as aerospace, electrical machinery, mechanical chemicals, ceramics, communications and batteries. In recent years, consumption has been on the rise, especially in superalloys, cobalt catalysts and lithium batteries. Therefore, it is very important to recover cobalt from primary resources containing materials to secondary resources. The current cobalt purification process is the insoluble anode electrolytic deposition ...

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned process problems existing in the prior art, the object of the present invention is to provide a kind of swirl electrolysis technology that uses swirl electrolysis technology to electrolytically purify cobalt from cobalt-containing materials with high efficiency and environmental protection. Process and solve environmental problems in the process