PNEUMATIC FLOATATION MACHINE Russian patent published in 1997 - IPC

FIELD: mineral dressing. SUBSTANCE: machine contains cylindrical chamber K with gutter for discharging concentrate in its upper part with aerator A in its lower part, primary and auxiliary sludge-supplying arrangements and arrangement for discharging tails. Auxiliary arrangement is made in the form of an external pipe arranged along axis K and having sludge-distributors on its outlet and enclosing an inner pipe arranged coaxially and in spaced relation to it. Aerator A is cylindrically shaped and has a mixer in its lower part. Above the cylinder, coaxially and in spaced relation to it, a bonnet is disposed with, connected to it, tubular distributors of sludge-air mixture. EFFECT: improved design. 1 dwg