Title: STUDIES ON REDUCING DECOMPOSITION OF ZINC FERRITE AND THE BEHAVIOR OF GERMANIUM IN THE PROCESS
Abstract: In zinc hydrometallurgy, the formation of insoluble zinc ferrite (ZnFe_2O_4) results in low leaching rate of zinc and germanium. The zinc ferrite can be effectively decomposed into soluble products in the reduction process of fluidized- bed roasting of zinc calcine. Thus, the germanium existing in ZnFe_2O_4 can mostly dissolve out. Based on the investigation of mineralogical composition of zinc caline and studies on thermodynamics and kinetics of ZnFe_2O_4 in the reduction roasting, the technical conditions of reduction roasting process are established, the Ge behavior in the process is revealed as well. The Zn leaching rate is raised to 98.5% from 85% and Ge to 85-90% from 47% after the zinc calcine is roasted under the conditions of t=800-860℃, CO 8-12% and time 20-40min. It is confirmed that the reducing decomposition process of zinc ferrite is feasible.
Publication Year: 1991
Publication Date: 1991-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 1
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot