Sustainable Mining and Metallurgy

The article first provided an overview of the current cobalt refining process of the plant, and then discussed various technical problems that exist in different unit operations: high-efficiency leaching of complex raw material, solvent silicon removal, calcium sulphate crystallization, extraction purification, Ni & Co high-efficiency separation, intensified Ca & Mg removal, high-quality cobalt chloride preparation, conversion production of cobalt nitrate (as precursor to synthetic cobaltosic oxide) solution, intensified chloride removal for the anodic solution of cobalt electrodeposition, and intensified purification of cobalt chloride solution, and finally proposed solutions accordingly.