Method and apparatus for the production of aluminum

Details Method and apparatus for the production of aluminum Method and apparatus for the production of aluminum

2011-01-11

2011-01-11

Phasge, Arun S (Department: 1795)

Electrolysis: processes, compositions used therein, and methods

Electrolytic synthesis

Utilizing fused bath

C205S376000, C205S392000, C205S393000, C205S396000, C204S243100

Reexamination Certificate

active

07867373

ABSTRACT:
Disclosed is a method for the continuous production of aluminum from alumina including a first step of converting alumina (Al2O3) into aluminum sulfide (Al2S3) and a second step of separation of aluminum from aluminum sulfide in a separating reactor. Wherein in the first step in a conversion reactor alumina is dissolved in a molten salt to form a melt and a sulfur containing gas is fed through the melt whereby the sulfur containing gas acts as a reagent to convert at least part of the alumina into aluminum sulfide and at least part of the melt is used in the second step. Further the invention relates to an apparatus for operating the method.

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Nguyen Q. Minh et al., “The Electrochemical Behavior of Al2S3in Molten MgCl2+NaCl+KCl Eutectic”,J. Electroana. Chem.,131 (1982) pp. 229-242.
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R.O. Loutfy et al., “Potential for Energy Savings in the Production of Aluminum: Aluminum Sulfide Route”, Chemical Metallurgy—A Tribute to Carl Wagner, Proc. Of Symp. On Metallurgical Thermodynamics and Electrochemistry at the 110th AIME annual meeting, N.A. Gokcen, Ed., Feb. 1981, The Metallurgical Society of AIME, New York (1981).
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