Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1974-07-01
1976-05-04
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 68A, C22B 108, C22B 2102
Patent
active
039544435
ABSTRACT:
A process for producing aluminum from raw aluminum silicate ore, especially kyanite, including comminuting a natural or raw mined kyanite ore to a desired particle size, beneficiating the ore to form a kyanite concentrate, compacting the concentrate along with a carbon reductant into agglomerates such as briquettes, pellets or other suitable form and to a desired size, carbothermically reducing the compacts in an electric arc furnace into an aluminum-silicon alloy, comminuting the aluminum-silicon alloy into a desired particle size, reacting the aluminum-silicon alloy particles with hydrogen and propylene to form tripropylaluminum and dipropylaluminum hydride, pyrolyzing or decomposing the tripropylaluminum and dipropylaluminum hydride in an oil medium or bath to form an aluminum powder, filtering, washing and drying the aluminum powder, and fluxing and casting the aluminum powder into pigs or other suitable form, thereby forming a substantially pure aluminum product.
REFERENCES:
patent: 3116997 (1964-01-01), Kohlmeyer
patent: 3228763 (1966-01-01), Herkenhoff
patent: 3337328 (1967-08-01), Lawver
patent: 3418107 (1968-12-01), Carr
patent: 3578436 (1971-05-01), Becker
patent: 3770789 (1973-11-01), Ichiki
patent: 3784372 (1974-01-01), Scull
patent: 3788834 (1974-01-01), Hildreth
Foster Walter E.
Frey Frederick W.
Gautreaux Marcelian F.
Hutchinson Donald O.
McCarthy John H.
Ethyl Corporation
Johnson Donald L.
Leonard Paul H.
Rosenberg Peter D.
Sieberth John F.
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