PNEUMATIC FLOATATION-GRAVITATION MACHINE Russian patent published in 1999 - IPC

FIELD: concentration of mineral resources, in particular, pneumatic floatation machines, applicable both for concentration of diamond- containing ores (grain size up to 2 mm) at enterprises of diamond-mining industry and for ores of non-ferrous, rare, noble and ferrous metals (grain size up to 0.2 mm), non-metallic minerals and coal. SUBSTANCE: the machine uses a cylindrical vertically installed floatation chamber with a tapered base, dispersive device located in the center of the chamber, foam collector, device for classifying and separate output of coarse and fine tailings, pulp level regulator. The machine is furnished with an additional disperse device installed in the lower tapered section of the chamber, device for unloading of chamber product consisting of an unloading box, pocket with a valve-type control member, tap with a hose gate and pipe with an air-lift, and the device for classifying and separate output of coarse and fine tailings is made as a gravitation chamber representing a cylinder with a tapered base connected to the floatation chamber through a feed branch pipe. EFFECT: expanded range of grain size of concentrated mineral and reduced power consumption. 1 dwg