DISCHARGING DEVICES FOR PNEUMATICALLY-OPERATED FLOTATION APPARATUSES Russian patent published in 1994 - IPC

FIELD: refinement of minerals. SUBSTANCE: apparatus incorporates vertical pipe 1 having diffuser 2 in its lower portion, with float 3 being positioned above diffuse 2. Length of float is less than that of pipe 1, but exceeds it when this pipe has no diffuser. Float is associated with replaceable weights 9 and counterweights 10. Float movement changes gap between itself and diffuser wall to allow constant pressure differential and pulp level in chamber being emptied. EFFECT: more sophisticated design. 2 cl, 2 dwg