Literature survey on the recovery of gold from thiourea solutions and the comparison with cyanidation

CIM Bulletin, Vol. 79, No. 895, 1986

G. DESCHENES, Physical Scientist, Mineral Sciences Laboratories, CANMET, Energy, Mines and Resources Canada, Ottawa, Ontario

This literature survey discusses the recovery of gold from thiourea solutions. An overview of techniques used and general comments on the basic cyanidation methods are presented. The chemistry and mechanisms of cementation, activated carbon, resins, electrowinning, solvent extraction and pressure reduction are examined. Conclusions and recommendations give orientation for future research and development activities in this field.
Mots Clés: Gold recovery, Gold processing, Cementation, Thiourea solutions, Cyanidation, Ion exchange, Electrowinning, Leaching, Activated carbon adsorption.