Method and apparatus for the production of aluminium
AssigneeCorus Aluminium Walzprodukte GmbH
InventorsHeiko Sportel, Cornelis Wilhelmus Franciscus Verstraten
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Abstract
Method for the production of primary aluminium from alumina comprising the step of converting alumina into aluminium sulfide (Al2S3) and subsequently the separation of aluminium from aluminium sulfide wherein the conversion of alumina into aluminium sulfide is performed by reacting alumina with CS2 containing gas at a temperature Tal whereby the alumina is mainly γ-alumina.
Claims31
A method for the production of primary aluminium from technically pure alumina comprising the step of converting alumina into aluminium sulfide (Al2S3) and subsequently the separation of aluminium from aluminium sulfide, wherein the conversion of alumina into aluminium sulfide is performed by reacting alumina with an essentially gaseous CS2 gas containing reactant at a temperature Tal wherein the alumina is mainly γ-alumina.
An apparatus for producing primary aluminium from alumina, comprising:
- a first reactor for manufacturing CS2;
- a second reactor for manufacturing Al2S3 from CS2 and Al2O3 by reacting Al2O3 with an essentially gaseous CS2 gas containing reactant at a temperature Tal wherein the alumina is mainly γ-alumina;
- and
- a third reactor for manufacturing Al from Al2S3.
Dependencies are inferred from the claim text.