Perspectives of extraction of some metals from raw materials and ferroalloy production wastes

Perspectives of more deep and complex processing of mineral raw materials are considered. Chromium ores contain microadmixtures like manganese, titanium, nickel, cobalt, platinum group metals, copper (up to 0.01%), gallium (up to 20 grams per ton), gold and silver (up to 1 grams per ton) etc. The most valuable admixture are the platinum group elements. Average concentration of these elements in chromium ores reaches 0.7 grams per ton. Because of lack of enrichment technology platinum group elements go to the dump.