The method of cementation from sulfate solutions containing non-ferrous and noble metals, selenium and tellurium has been studied, which allows, depending on the task, to obtain both collective and selective concentrates of noble metals and rare chalcogenes.
The phase composition of nickel electrorefining sludge of MMC Norilsk Nickel enterprises has been studied. It is shown that the forms of platinum metals in sludge depend on the nomenclature of processed raw materials and conditions of anode production and electrorefining.