METHOD OF PRODUCING METALLIC ALUMINIUM AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC C22B21/00 

FIELD: technological processes.

SUBSTANCE: method includes a preliminary two-stage continuous treatment of bentonite clay in the form of air dredge, whose fractional composition is from 0.001 to 0.05 mm, followed by its activation by an electrostatic field of strength E≈1000 V/m. Then, the air dredge is exposed to an alternating magnetic field, a strength of 1⋅10⁴-4⋅10⁴ A/m, frequency of 20-50 Hz. Stirring of air dredge is carried out in the chamber of aerostatic activation. A device is disclosed comprising a housing made of two chambers - an electrostatic chamber connected to a measuring hopper and containing electrodes of a static field generator connected to a static capacitor battery for electrostatic activation of the air dredge, and a dielectric chamber provided with a vacuum pump and a storage hopper located in its lower part, and two pairs of focusing elements electrically connected to a concentration generator of an alternating electromagnetic field for an electromagnet air dredge.

EFFECT: possibility of a significant degree of extraction of pure aluminium from its oxides.

2 cl, 2 dwg