LEACHING PRECIOUS METALS USING N-HALONYDANTON

摘要

A process for extracting a precious metal or base metal from a source material containing the metal. The process comprises contacting the source material with an aqueous leaching solution containing a leaching agent comprising an N-halohydantoin compound, thereby producing an aqueous leachate containing said metal. Aqueous leaching compositions, and novel electrowinning and other electrodeposition processes are also disclosed.