Process for purging aluminum and aluminum alloy melts of small q

Details Process for purging aluminum and aluminum alloy melts of small q Process for purging aluminum and aluminum alloy melts of small q

1981-05-19

1982-10-19

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 68R, 75 93AC, C22B 2106

Patent

active

043548695

ABSTRACT:
Small quantities of alkali metal and alkaline earth metal impurities are removed from an aluminum melt by introducing a source of sulfur such as elemental sulfur, which combines with the impurity to form an impurity-containing slag, purging the melt with gas to remove excess sulfur, and separating the purified melt from the slag.

REFERENCES:
patent: 1092936 (1914-04-01), Mellen
patent: 4052198 (1977-10-01), Yarwood et al.
Whiting et al., "Removal of Magnesium from Aluminum by Fumeless Chlorine Treating", AFS-Transactions 82 (1974) pp. 189-192.

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