FIELD: precious metal technologies. SUBSTANCE: concentrates are subjected to oxidative firing to give ashes, which are brought into hydrochlorination reaction to transfer platinum metals into chloride solution, after which they are recovered from solution. According to invention, hot ashes are wetted at 200-350 C with organic reducing agent enabling removal of oxide passivating films from the surface of platinum metal grains, consumption of this agent (in particular, straw oil) being 5-10% of the weight of ashes. EFFECT: increased platinum metal transfer into solution in chlorination stage by 1/2 to 33% depending on the nature of metal. 2 cl, 1 tbl, 3 ex
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