Production of a purified aluminum monochloride from alumina, bauxites and clays and the subsequent production of aluminum metal

摘要

In the production of aluminum monochloride from alumina, bauxites, bauxitic clays and clays wherein the produced aluminum monochloride gas stream contains at least CO.sub.2 and Cl.sub.2 radical and this gas stream is initially passed through at least one bed of reducing agent selected from the group consisting of charcoal and devolatilized coke to convert the CO.sub.2 to CO; subsequently the gas stream now containing at least AlCl, CO and Cl.sub.2 radical is contacted with molten aluminum metal to convert the Cl.sub.2 radical to AlCl to produce a gas stream of which the major components are AlCl and CO substantially free of CO.sub.2 and Cl.sub.2 radical.