Abstract:Several processes of iron removal in zinc hydrometallurgical, such as conventional process, hot acid leaching, oxygen pressure leaching, goethite process and hematite process are introduced. This paper focuses on the comparison of various indicators of the hematite iron removal process of SO2 reduction leaching, hot acid reduction leaching and oxygen pressure reduction leaching. The raw materials with low iron content are suitable for the conventional process and goethite process, while the raw materials with high iron content are suitable for the jarosite process and the hematite process. The oxygen pressure leaching process can adapt to both raw materials.