NOUFERROUS METALLURGICAL EQUIPMENT

The antimony cathode produced by the antimony hydrometallurgical process contains impurities such as iron, arsenic, lead, and sulfur, and it is difficult for the grade and purity of antimony to reach a level that’s commercially viable, hence the antimony needs refining. The current industrial refining of antimony includes pyrorefining and aqueous electrolytic refining. The crude antimony produced has many impurities and is rich in a large amount of precious metals like gold and silver. Therefore, it is necessary to enrich and recover valuable metals such as gold and silver while removing impurities for purifying antimony. The application of aqueous electrolysis can achieve this purpose. Due to the special physical and chemical properties of antimony, attention should be paid to equipment material used in the melting and casting process of crude antimony and the electrolytic system selected for electrolytic refining.