METHOD OF REFINING COPPER BULLION COMPRISING ANTIMONY AND/OR ARSENIC

摘要

The disclosure relates to a process for refining of copper bullion comprising arsenic and/or antimony in order to enable extraction of the metal values bound in the copper bullion. The process comprises two separate metallurgical process steps wherein the first step comprises selective conversion of elements having high affinity to arsenic and antimony and the second step comprises oxidation of arsenic and/or antimony to a lead oxide based slag.