FIELD: metallurgical engineering.
SUBSTANCE: method includes heating the raw material in the plasma oven to form a top slag layer and a lower molten metal layer, removing the slag layer, removing the molten metal layer, solidifying the removed molten metal layer, fragmenting the solidified metal layer to form fragments, and recovering a composition rich of the precious metal from these fragments. The raw material includes a precious metal-containing material and a metal-collector, the said metal-collector is a metal or an alloy that is capable of forming a solid solution, alloy or intermetallic compound with one or more precious metals. The removed layer of molten metal is poured onto the pouring table to solidify it.
EFFECT: increased recovery of precious metals.
17 cl, 8 tbl, 11 dwg
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