Process for treating molten aluminum to remove hydrogen gas and

Details Process for treating molten aluminum to remove hydrogen gas and Process for treating molten aluminum to remove hydrogen gas and

1984-10-19

1985-12-03

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 93E, C22B 2106

Patent

active

045564191

ABSTRACT:
Hydrogen gas and non-metallic inclusions are removed from molten aluminum by a process comprising the steps of maintaining an atmosphere containing BF.sub.3 gas in a treating vessel above the surface of molten aluminum placed therein, introducing a treating gas into the molten aluminum, and removing floating non-metallic inclusions and treating gas containing hydrogen gas from the surface of the molten aluminum.

REFERENCES:
patent: 2654670 (1953-10-01), Davis et al.
patent: 3955970 (1976-05-01), Claxton et al.
patent: 4392888 (1983-07-01), Eckert et al.

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