Minerals and Metallurgical Processing, cilt.21, sa.3, ss.144-148, 2004 (SCI-Expanded)
The kinetics of thiourea leaching of Ovacik gold ore, Normandy Mining Co., were investigated, and the major leaching parameters were determined. Ovacik is the first project in what is potentially a large new mining industry in Turkey. The main parameters investigated in the leaching tests were particle size, solid/water ratio, pH, thiourea, Fe2(SO4)3 and Na2S2O5 concentrations, agitation rate and leaching time. The Na2S2O5 is used to reduce thiourea consumption to a reasonable level. Optimization of the parameters resulted in Au recoveries greater than 90% for a 2.5-hour leach period. Copyright 2004, Society for Mining, Metallurgy, and Exploration, Inc.