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hydrometallurgical process for the separation and concentration of gold, platinum and palladium, as well as the extraction of selenium from the anode sludge copper electrowinning and from similar non-metallic materials.
hydrometallurgical process for the separation and concentration of gold, platinum and palladium, as well as the extraction of selenium from the anode sludge copper electrowinning and from similar non-metallic materials.
A hydrometallurgical process for enrichment of gold, platinum and palladium from copper electrolysis anode sludge, and simultaneously recovery of selenium, in which the sludge is treated with Cl2/HCl to transform the selenium of a hexavelent state and precipitate out silver chloride. The filtrate is then subjected to selective reduction of precipitate the noble metals and the resulting filtrate is chlorinated and a further reduction is effected to precipitate the metallic selenium.
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