| 摘要 |
<p>1,136,608. Producing aluminium by fused electrolyte process. CONZINC RIOTINTO OF AUSTRALIA Ltd. and COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANIZATION. Dec.30, 1965 [Dec. 30, 1964], No. 55306/ 65. Heading C7B. Aluminium metal or alloy is produced by (1) electrolyzing a fused salt electrolyte containing at least one alkali, alkaline earth and/or rare earth metal halide e.g. LiCl and NaCl, and a chloride of a metallic reductant e. g. MgCl 2 , CaCl 2 and/or LiCl, using a molten alloy cathode of the metallic reductant, e. g. Mg, Ca and/or Li, and Al metal or alloy, the metallic reductant, being electro-deposited from the electrolyte to enter into solution in the molten alloy, and (2) contacting the molten alloy with AlCl 3 , preferably in a separate reactor compartment. AlCl 3 vapour under pressure may be bubbled through the molten alloy, e.g. via two concentric tubes projecting downwardly with the inner tube supplying AlCl 3 vapour to a lower level than the outer tube; or the molten alloy may be made to flow over a cascade to react with the AlCl 3 vapour in the reactor compartment. Molten Al metal or alloy containing a diminished concentration of reductant may be recycled from the reactor compartment back to the electrolysis compartment and a portion discharged. For producing alloys, the chloride of the alloying element is introduced with the AlCl 3</p> |
