FLOTATION MACHINE FOR COARSE PARTICLE FLOTATION Russian patent published in 2003 - IPC

FIELD: mineral concentration; applicable in pulp flotation. SUBSTANCE: flotation machine includes compartment, aeration unit having impeller located round blade stator and connected with hollow shaft for air supply. Located on compartment bottom under impeller and coaxially with it is plate with projections on its side surface. Machine is provided with troughs located near wall and whose overflow edge is located at height of, at least, equaling 0.6 height of compartment. Lower parts of said troughs are connected by means of their branch pipes with lower part of additionally installed pipe whose upper part protrudes above foam layer. Pipe has slots located at height equaling 0.3 height of compartment. In this case, area of slots is regulated by circular gate. Pipe upper part may be made in form of guide appliance. EFFECT: higher efficiency of flotation of coarse particles. 2 cl, 2 dwg