FIELD: process engineering.
SUBSTANCE: invention relates to concentration of minerals by flotation, particularly, for extraction of sliming mineral polymetallic ore pulps, for example, for extraction of valuable metals from slimes and can be used for concentration of fine and superfine ingrained polymetallic ores. Method of extraction of selected minerals from ore pulps by pressure flotation comprises processing of the pulp by flotation reagents for hydrophobisation of mineral particle surface and water saturation with air under pressure. Prepared conditioned pulp is thoroughly mixed with air-saturated water at barometric pressure while produced mix is processed by stream of air bubbles of flotation sizes generated nearby flotation chamber bottom.
EFFECT: higher efficiency of pressure flotation.
10 cl, 8 dwg
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