FIELD: metallurgy.
SUBSTANCE: invention relates to the field of metallurgy of secondary raw materials of noble metals, in particular to a method for processing used ceramic-based catalysts consisting of oxides of aluminum, silicon, zirconium, other metals and containing platinum group metals. The method includes grinding catalysts, mixing with fluxes and dispersed copper, melting with collecting platinum metals with copper, separating the copper alloy and slag, separating platinum metals from the copper alloy. The copper alloy is cast in the form of anodes and subjected to anodic dissolution in a sulfuric acid electrolyte. In this case, platinum metals form a sludge, and copper is reduced at the cathode in the form of a powder. The powder is separated from the electrolyte and returned to the smelting of a new portion of the catalysts.
EFFECT: invention provides a reduction in copper consumption during the processing of catalysts by 3-4 times.
2 cl, 1 tbl
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