COAL FLOTATION METHOD Russian patent published in 1995 - IPC

FIELD: mineral concentration. SUBSTANCE: coal flotation method comprises steps of preliminary pulping of an initial raw material; conditioning the pulp with a collector, being heavy hydrocarbons, and with a foaming agent; separating pulp with extraction of combustible mass to a concentrate; before introducing heavy hydrocarbons to the conditioning process mixing them with light catalytic gas-oil with ratio (60-40):(75-25). EFFECT: enhanced efficiency. 1 cl, 1 tbl