Improvements in or relating to the Recovery of Aluminium from Composite Materials containing Aluminium and Silicon, such as Clay, Bauxite or the like.

摘要

103,716. Pollak, J. E., (Weaver Co.). March 1, 1916. Silicon.-In a process for extracting aluminium from materials containing aluminium and silicon, such as clay, bauxite, &c., comprising the treatment of the material with chlorine to form aluminium chloride and silicon tetrachloride, separating the chlorides, and treating them to obtain aluminium and silicon, the silicon tetrachloride; obtained in a condenser 35 is collected in a vessel 57 and fed to a bath of molten aluminium, or in some cases, molten zinc, in a furnace 73, whereby aluminium chloride is formed, which is passed to the condenser 34 or 2, while the silicon that is liberated is withdrawn through the spout 127.