FIELD: mining industry. SUBSTANCE: method for preparation of ores containing finely dispersed gold for leaching includes uncovering of ore-forming minerals by crushing and grinding and primary concentration of gold. Novelty consists in that after uncovering of ore-forming minerals by crushing and grinding, they are subjected to thermal and electric activation. In this case, gold is concentrated by enlarging intracrystalline segregations of gold in formation of microfissures uncovering these segregations by contact-percussive action in oncoming air flows. EFFECT: higher efficiency.
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