Specialized metallurgical processes – compositions for use therei – Compositions – Loose particulate mixture containing metal particles
Patent
1979-10-30
1981-04-14
Rosenberg, P. D.
Specialized metallurgical processes, compositions for use therei
Compositions
Loose particulate mixture containing metal particles
C22B 910
Patent
active
042617464
ABSTRACT:
This invention pertains to fluxes used in recovery operations for secondary aluminum. The flux herein is formulated in order to minimize the amount of chloride in the slag whereby it can be used as land fill without an adverse impact on the environment or in lieu of bauxite in the manufacture of aluminum or as source of aluminum oxide for the manufacture of aluminum or aluminum salts. The flux uses a combination of sodium chloride and aluminum chloride which form a double salt having vapor pressure sufficiently low to permit the aluminum chloride sublimation, without rapid sublimation, however, sufficiently high to permit the evaporation of chloride salts to provide low chloride slag. The improved flux also permits the heat cycle to be shortened by 10 to 20 percent thereby giving a measurable energy savings.
REFERENCES:
patent: 3754897 (1973-08-01), Derham
Bauer Carl F.
Beese Ronald E.
Langston Benny
Parikh Niranjan M.
American Can Company
Auber Robert P.
Bowie Stuart S.
Passman Aaron
Rosenberg P. D.
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