FIELD: precious metal recovery. SUBSTANCE: initial material, in particular, secondary material is melted in presence of fluxes forming alkali metal oxide, melt is blown through with dry air at 1100-1150 C followed by granulation. Granules are then dissolved, non-dissolved gold- containing residue is separated, and silver nitrate-containing solution is hydrolyzed. Resulted slurry largely contains solid metal impurities. Solution is electrolyzed to precipitate silver. Hydroxide precipitate is dissolved, platinum metal concentrate is precipitated, and affinity silver is obtained. EFFECT: improved separation procedure. 3 cl
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