FIELD: metallurgy.
SUBSTANCE: according to method exhaust gas is directed into closed reactor which is charged with charcoal of approximate porosity from 50 vol % to 85 vol % and average diameter of porous approximately from 0.05 micrometers to 2.0; at that charcoal contacting with exhaust gas thus at least Al4C3, is produced which is returned to melting furnace.
EFFECT: reduction of power consumption and aluminium losses.
12 cl, 4 dwg, 2 tbl, 1 ex
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