METHOD OF CONCENTRATION OF THE IRON ORES Russian patent published in 2007 - IPC B03C1/00 B03B7/00 

FIELD: mining industry; methods of concentration of the magnetite ores.

SUBSTANCE: the invention is pertaining to the method of concentration of the minerals, in particular, the magnetite ores. The method allows to reduce the share of the ballast (not requiring crushing) material. The method includes the feeding of the pulp-shaped material intended for the wet magnetic separation into the apparatus, where using the gravitational method the pulp-shaped material is separated for two fractions: the light fraction and the heavy fraction. The heavy fraction is sent directly for crushing (uniting it with the magnetic product of separation), or using the magnetic field divide it into the nonmagnetic part and the magnetic part. At that the nonmagnetic part is dumped in the refuse tailings, while the magnetic part is directed to the mill or subjected to the gravitational separation with production of the heavy and light products. The heavy product consisting of the particles of the opened useful mineral is withdrawn avoiding the crushing as the rough iron concentrate. The light product consisting of the accreted particles is routed into the drum-type mill.

EFFECT: the invention allows to reduce the share of the ballast (not requiring crushing) material.

5 cl, 6 dwg