METHOD OF PROCESSING RED MUD Russian patent published in 2017 - IPC C22B7/00 B03C1/00 

FIELD: technological processes.

SUBSTANCE: red mud is ground and separated by magnetic separation into magnetic and non-magnetic fractions. Before grinding, red muds are mixed with water activated by the magnetic field to the state of the pulp. To grind the mud, a pulp flow is formed and passed through a "boiling bed" of ferromagnets, which is acted upon by a rotating magnetic field. The frequency of the rotation of the magnetic field is changed until cavitation in the pulp flow occurs at the resonance of the ferromagnets oscillations with the self-oscillations of the pulp particles in the frequency range 14-25 khz with the destruction of the solid pulp fractions into the constituent finely divided elements. After that, they are sent to a magnetic separation to separate into types, and water is removed for a subsequent cycle.

EFFECT: reduces power consumption.

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