Method using a single carbothermic reduction furnace with temperature control within the oven.

摘要

Method using a single carbothermic reduction furnace with temperature control within the furnace.Refers to a process of departure of aluminium production using a single furnace / carbotu00e9rmico reactor (11) having a single compartment reactor hollow with electrodes for heating the resistance of the bottom (16) (13) on the side of the reactor.It involves the addition of Oh ~ 2 ~ ~ 3 ~ and C (carbon) to initiate and fusing the mixture to provide a slag (oh ~ 2 ~ ~ 3 ~ oh ~ 4 ~ C ~ 3 ~) having a temperature from about 1875 198 C and 2000 198 C; and then the addition of Oh ~ 4 ~ C ~ 3 ~ the slag and increase the temperature of the oven (11) to form a phase A1 at the top with 6 to 8% by weight of C (21) and a phase slag at the bottom (22); and then Oh ~ 2 ~ ~ 3 ~ is addedThe AI - C / slag (21,22) to produce a slag rich in Oh ~ 2 ~ ~ 3 ~, to reduce the temperature of the reagent and produce a reaction of decarbonisation (step 30) providing a phase there at the top with less than 5% by weight of C (23) which is then removed after the step (40). The remaining slag is the starting material.