Abstract:Pilot tests were carried out on Pb-Ag residue and jarosite residue produced by zinc hydrometallurgy in Inner Mongolia. The water-soluble zinc contained in the slag was recovered by washing-purification-solvent extraction process. About 42% and 90% of zinc were washed out from Pb-Ag residue and jarosite residue, respectively. And more than 98% of iron was removed from solution during purification. A purified zinc-rich solution was obtained after solvent extraction and could be sent to electrowinning for producing electrolytic zinc. The process is simple, adaptable to different residues and has remarkable economic and social benefits.