AERATOR OF AIR-OPERATED FLOTATION MACHINE Russian patent published in 1996 - IPC

FIELD: ore benefication. SUBSTANCE: aerator has hollow support with branch pipe to feed air, plug and dispersing fixture placed between them made in the form of gummed spiral. Spiral is put inside spiral uniaxially to it. Spiral is connected with one end to plug and is anchored in branch pipe to feed air with its other end. Spiral is manufactured in the form of truncated cone. Bigger base of truncated cone is located in hollow support. Height of truncated cone is found by formula (D_m)³, where H is height of spiral, m; P is pulling effort of spring, N; is number of working turns of spring; ny is stability margin of springs; G is shear modulus of elasticity of spiral, Pa; d is diameter of wire, m; Cb is factor of ratio of height of spiral to mean radius; D_m is mean diameter of spring, m. EFFECT: improved operational efficiency.