Sustainable Mining and Metallurgy

The purification and cobalt removal process of zinc hydrometallurgy reagent uses organic reagent sodium formate to remove cobalt. There are some problems in the production, such as poor cobalt removal effect, enrichment of organic decomposition products in zinc hydrometallurgy system, difficulty in zinc electrowinning burning plate and melting and casting materials. In this paper, the above problems were analyzed, and the measures of optimizing cobalt removal process, new liquid quality, germanium removal process parameters, and removing nano zinc sulfide were proposed. Through the implementation of optimization measures, the use of organic reagents is significantly reduced, the enrichment of organic matter in the system is also significantly reduced, the impurities such as cobalt and cadmium in the purified new liquid are further removed, and the system stability is better, which fundamentally solves the harm of organic matter decomposed by organic reagents to zinc electrowinning process.