Process for the Recovery of precious metals to form a Stack involves passing a solution of thiosulfate lixiviant and a Carrier gas molecular Oxygen through the stack and Recover Metals

摘要

Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ lixiviants that include at most only small amounts of copper and/or ammonia and operate at a relatively low pH, reduction of polythionates, inert atmospheres to control polythionate production, and electrolytic solutions which provide relatively high rates of precious metal recovery.