PNEUMATIC FLOATATION COLUMN MACHINE Russian patent published in 1998 - IPC

FIELD: floatation of mineral resources, applicable at processing of mineral raw materials containing non-ferrous, ferrous, rare-earth, noble metals, as well as non-metallic resources of a wide range of grain size. SUBSTANCE: machine has a body consisting of the upper and lower parts (the upper part is an expanded one), feed and discharge appliances, aerators, foam collector. The feed appliances are located on the external side of the body expanded part and connected to it through branch-pipes. The body expanded part accommodates the check floatation chamber in the form of a hollow movable appliance, whose diameter is determined from relation d=[D+(0.1-0.15)], where: d - diameter of the check floatation chamber, m; D - diameter of the interior of machine lower part, m. A flow stabilizer is positioned between the body upper and lower parts, in vertical section it represents two truncated cones connected at angle β = 360^°-α, where α=60-90 deg. The area of the flow stabilizer narrow part is in the following relation with its base: S₁= 1/3S₂,, where: S₁ - area of flow stabilizer narrow part, sq.m; S₂ - area of flow stabilizer lower base, sq.m. EFFECT: simplified design, enhanced efficiency of floating process, enhanced extraction of floated minerals, expanded range of their grain size. 1 dwg, 1 tbl