Environmentally friendly way of complex extraction of nonferrous, rare and precious metals from ores and materials

摘要

1. Environmentally friendly way to complex extraction ferrous, rare and precious metals from ores and materials, ores comprising leaching in two stages: the first stage of ore processing first circulating leach solution with the introduction of sulfuric acid, ferric salts and ferrous obtain productive solutions and / or rare metals, the second stage processing a second ore circulating leach solution with the introduction of sulfuric acid, salts of thiocyanates (thiocyanate) and ferric and productive yield sol Hur precious and / or rare metals, a separate solution processing each phase chemical deposition, sorption and / or by electrolysis and returns circulating fluids at appropriate stages, characterized in that in a first step the introduction of sulfuric acid and ferric iron in the leach solution is maintained in an amount providing at the end of the leaching solution in the productive molar concentration ratio of trivalent and bivalent iron ions is not less than 1: 1, and in a second step the introduction of sulfuric sour you salts thiocyanates and ferric iron in the leach solution is maintained in an amount to provide a productive solution the molar concentration ratio of thiocyanate ions and ferric not higher than 2: 1 and not less than 0.5: 1, and the molar concentration ratio of trivalent and bivalent iron ions and not less than 1: 1.2. A method according to claim 1, characterized in that, if necessary in the first stage to maintain the end of the leach the molar concentration ratio of trivalent and bivalent iron ions in a productive stretch