Recovery of zinc, lead and silver from zinc leaching residue

Author

Xianjin, Yu ; Xiaona, Guo ; Yali, Zhang ; Lipeng, Zhang

Author_Institution

Coll. of Chem. Eng., Shandong Univ. of Technol., Zibo, China

Volume

2

fYear

2011

fDate

20-22 May 2011

Firstpage

1104

Lastpage

1108

Abstract

A two-stage process of recovery of zinc-lead-silver from zinc leaching residue was investigated. The stage of sulfated roasting-water leaching of zinc leaching residue was applied to recovery zinc by controlling sulfuric acid dosage, roasting time and temperature, leaching time, the ratio of L/S and the addition of sodium chloride. The second stage is chloride leaching of the residual solid after zinc extraction to recovery lead and silver. The concentration of NaCl, leaching time and temperature, the ratio of L/S and the dosage of hydrochloric acid were studied. The optimum conditions of metals extraction are determined and the optimal rate of zinc 81%, lead 95%, silver 70% are obtained.

Keywords

leaching; lead; metallurgy; silver; zinc; Au; Pb; Zn; chloride leaching; hydrochloric acid dosage; sodium chloride. addition; sulfated roasting-water leaching; sulfuric acid dosage control; zinc extraction; zinc leaching residues; zinc-lead-silver recovery; Leaching; Lead; Materials; Zinc; chlorinated leaching; hydrometallurgical; sulfated roasting; the leaching residue;

fLanguage

English

Publisher

ieee

Conference_Titel

Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-61284-749-8

Type

conf

DOI

10.1109/ICMREE.2011.5930533

Filename

5930533