COLUMN TYPE FLOTATION PNEUMATIC MACHINE Russian patent published in 2006 - IPC B03D1/24 

FIELD: mineral concentration, possibly processing of mineral raw materials containing non-ferrous, ferrous, rare, noble metals, non-metallic minerals.

SUBSTANCE: machine includes cylindrical housing having enlarged upper part and lower part; feeding, aerating and discharging attachments in the form of ejectors; froth collector. Diameter of enlarged part of housing is determined from given expression where D - diameter of upper enlarged part of cylindrical housing, m; k₁ - empiric coefficient for determining diameter of upper enlarged part of cylindrical housing selected in range 1 - 1.4; h₁ = ( k₂ x h₂) - height of upper enlarged part of cylindrical housing, m; k₂ - empiric coefficient for determining diameter of upper enlarged part of cylindrical housing, selected in range 0.2 - 1.0;_{h2 -height of lower part of cylindrical housing, m; d -diameter of lower part of cylindrical housing, m, depending upon target efficiency of machine by initial product according to relation d² = k3 x Q; Q - target efficiency of machine by initial product, t/h; k3 - empiric coefficient for determining diameter of lower part of cylindrical housing, selected in range 0.015 -0.03. Froth collector is in the form of double-slope chute and it has branch pipes arranged mutually opposite and used for removing froth product.}

EFFECT: improved efficiency by froth product due to increased area of upper enlarged part of cylindrical housing, lowered material consumption for making machine due to its optimal size.

2 cl, 1 dwg, 4 tbl