（1.Henan Yuguang Gold and Lead Group Co,Ltd, Henan 454650, China） （2.Yunnan Metallurgy Group，Yunnan 650051，China）
Keywords:
-
CLC:
PACS:
-
DOI:
10.7502/j.issn.1674-3962.2012.08.09
DocumentCode:
Abstract:
Zinc calcine leaching process by three stage，there are neutral leachinglow acid leachinghigh acid leaching.Iron would be leaching into the solution in the process of acid leaching which would increase the difficulty of remo ving iron before electro deposition.In this paper，the traditional zinc hydrometallurgical〖JP+1〗 and oxygen pressure leaching were combined.the effect of oxygen pressure、concentration of sulfuric acid、temperature、leaching time、m ineral particles size、liquor/solid ratio and amount dispersing agentwere found out from the research on oxidizing pressure leaching the residues from the neutral leaching process.The results showed thatoxidizing pressure leaching have good economic benefit and social effect.It is not only improve Zn leaching rate（over 98%），reduce Fe leaching rate（low 50%），shorten production cycle and reduction in production costs，but also environment friendly and raising resource utilization.So as to simplify process and save energymeanwhile it can offered reference for industrial study in future.