Stimulation of Chemical and Electrochemical Leaching of Gold from Rebellious Minerals
V. A. Chanturia, A. L. Samusev, V. G. Minenko
Academician Melnikov Research Institute of Comprehensive Exploitation of Mineral Resources-IPKON, Russian Academy of Sciences, Moscow, 111020 Russia
Keywords: Rebellious gold ore, arsenopyrite, activated chlorine, hypochlorite, electrochemical leaching, sodium chloride, ultrasound
Abstract
The experimental studies into stimulation of chemical and electrochemical leaching of gold from rebellious concentrates by ultrasound are presented. From the assessed efficiency of saturation of chloride solutions with electrochemically activated chlorine and the analysis of change in the surface morphology and in the composition of elements, phases and particle sizes in concentrates, the leaching stimulation mechanism is determined and the efficient ultrasonic treatment parameters are found for a mineral suspension to ensure higher gold recovery by 39% in 5 h.
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