PNEUMATIC COLUMN-TYPE FLOATATION MACHINE Russian patent published in 2003 - IPC

FIELD: concentration of minerals; floatation of minerals; mining industry; ferrous and non-ferrous metallurgy. SUBSTANCE: proposed floatation machine has cylindrical housing, aerator located in cylindrical part of housing and provided with Laval nozzles, foam product discharge units made in form of cylindrical members introduced into hollow taper reflector at spaced relation and taper ring connected with central pipe fitted with elbow, reservoir for internal overflow with discharge pipe for small wastes and gate valve for large wastes and circular air disperser mounted in upper portion of housing. Machine is also provided with column- floatation chamber engageable with taper part of housing, air bubble perforated reflector-distributor of cylindrical and taper shape located in lower portion of floatation chamber in central axis, additional aerator provided with disperser in form of Laval nozzles and baffle plates located in upper portion of floatation chamber for excluding rotation of pulp. Laval nozzles of additional aerator are located opposite cylindrical part of perforated reflector distributor on the outside of floatation chamber smoothly over its perimeter. EFFECT: optimization of hydro- and aerodynamic conditions of floatation process; enhanced reliability. 1 dwg