FIELD: metallurgy.
SUBSTANCE: method includes treatment of raw material by alkali and transferring of gold into liquid alkaline extracts of humic substances and following extraction of gold from liquid alkaline extracts of humic substances. Extraction of gold is implemented by means of centrifugation of alkaline extracts at acceleration not less than 100 g, principally 2500-10000 g, with precipitation gold-bearing organic-mineral faction. Herewith preliminarily value of pH of mentioned extract is developed up to 4.5-8, mainly up to 4.5-6. Treatment of solid gold-bearing organic raw material by alkali is implemented by means of mechano-chemical conversion at presence of solid alkali with receiving of addition of water.
EFFECT: increasing of gold extraction from gold-bearing organic raw material.
4 cl, 2 tbl, 3 ex, 1 dwg
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