Method of refining aluminum-silicon alloys

Details Method of refining aluminum-silicon alloys Method of refining aluminum-silicon alloys

1976-03-22

1977-05-10

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 68A, 75 93AC, 75135, C22B 2106

Patent

active

040226140

ABSTRACT:
Molten aluminum-silicon alloys or aluminum base alloys containing substantial amounts of silicon which contain deleterious amounts of titanium are refined by treatment with a fluoride flux less dense than the alloy and having a boiling point above the liquidus temperature of the alloy. The alloy is first prepared or formed in a suitable furnace. The molten alloy formed therein is transferred to a ladle via a tap hole in the furnace. While the molten alloy is in the ladle at the tap hole area, solid granular flux is added thereto in a sufficient amount to reduce but not entirely eliminate the titanium content of the alloy. Subsequently, the alloy and flux are separated. A second fluxing treatment may be performed after the ladle has been removed from the tapping area.

REFERENCES:
patent: 1550192 (1925-08-01), Wild
patent: 3436212 (1969-04-01), Hess
patent: 3775092 (1973-11-01), Brusakor et al.
patent: 3958979 (1976-05-01), Valdo

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