FIELD: metallurgy.
SUBSTANCE: invention relates to a system for carbothermic production of aluminium. System comprises carbothermic reactor and power supply. Reactor comprises a plurality of side-entering electrodes and a top-entering electrode. Power supply is configured to feed multiphase current to side-entering electrodes and/or top-entering electrode. Electrodes are connected with molten bath of reactor, and multiphase current fed thereto is passed through bath, thereby heating reactor. Value of current supplied to different sets of electrodes can be adjusted so as to facilitate selected heating of molten bath. Exhaust gas from carbothermic reactor is fed into a channel for charge supply, thereby pre-heating charge from aluminium and carbon reducing agent.
EFFECT: higher efficiency of aluminium production due to use of alternating current.
19 cl, 8 dwg
