FIELD: process engineering.
SUBSTANCE: invention relates to mining, namely to ore concentration by flotation and can be used to deep flotation of ore and non-ore mineral stock. Method of flotation concentration of ore containing sulphide minerals and gold comprises preparing gas-water suspension, saturating mineral suspension with gas bubbles via mixing with prepared gas-water emulsion, mineralising gas bubbles and separating mineralised bubbles in the form of flotation-concentrate. Gas-water emulsion, "oxygen-water", is prepared electrochemically by forcing water through anode chamber of membrane-type flow electrolyser. Note that said mineral suspension is simultaneously saturated by hydrogen bubbles, their diametre making, preferably, 50 mcm and less, forcing it through anode chamber of membrane-type flow electrolyser. After mixing mineral suspension with "oxygen-water" emulsion, formed mix is directed into flotation machine chamber to get mixed and saturated by air bubbles of common flotation sizes.
EFFECT: higher flotation efficiency and specific efficiency.
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