Abstract: Cyclonic-static micro bubble flotation column is a highly effective micro particle separation equipment. It integrates counter-current mineralization, cyclonic mineralization and pip flow mineralization to realize an efficient mineralization so as to improve the recovery capability. When it is used in mineral separation, the factors influencing the separation performance are many, including grind size, pulp concentration, pulp temperature, agent regime, water quality, flotation flowsheet and its own working parameters.  For low grade refractory fluorite ore, a plexiglas φ50mm lab  cyclonic-static micro bubble flotation column was used in the separation. The effect of pulp conditioning time, feed rate, circulation pump pressure, aeration rate and spraying water rate on the flotation results of the fluorite ore is discussed.

Key words: Cyclonic-static micro bubble flotation column, Fluorite ore, Flotation