GRAVITATIONAL-CENTRIFUGAL METHOD OF DRESSING OF MINERALS

摘要

FIELD: construction industry, metallurgy industry, chemical industry and minerals industry; methods of dressing of minerals.;SUBSTANCE: the invention is pertaining to the field of construction industry, metallurgy industry, chemical industry and minerals industry, to the methods of dressing of minerals by size and density, in particular, to an aerodynamic separation of sand by sizing and density. The gravitational-centrifugal method of dressing of minerals includes a batching, delivery of the material onto the inner surface of a slantly mounted rotating drum, unloading of the products of separation. Regulate the drum rotation frequency and set the rate of its rotation below the critical rate. The bulk or heavy particles are separated by settling on the inner surface of the drum at an angle of its inclination equal to the angle the natural bank of the settling material. Transport it into the dram upper part to the unloading openings. The small or light particles are separated by their displacement on the inner surface of the drum upward till the critical point of their disconnection and an unloading from the drum under the action of the gravity in a cascade mode along a parabolic trajectory. The technical result of the invention is an increased efficiency of dressing of minerals, simplification of the method and a decreased power input.;EFFECT: the invention ensures an increased efficiency of dressing of minerals, simplification of the method and a decreased power input.;1 ex