Processing of copper-electrolyte slimes: Evolution of technology

Abstract

The slime formed during the electrical refining of copper is a valuable multicomponent product. The methods for processing it are determined by its composition and depend on the form of its precious metals, and that of its selenium and tellurium. We analyze the advantages and disadvantages of the main techniques used for processing copper-electrolyte slimes. The prevailing trend in the development of modern slime production is improving hydrometallurgic techniques while eliminating smelting for silver-gold alloys and reducing toxic emissions into the environment. © 2012 Allerton Press, Inc.