Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1986-11-17
1989-04-18
Andrews, Melvyn J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 68R, C22B 2106
Patent
active
048224120
ABSTRACT:
The invention is a method of removing lithium from aluminum-lithium alloys. Aluminum-lithium alloys (64) and a metal halide flux (68) are fed into a rotary furnace (10) at a raised and cool end thereof. The temperature at the cool end is above that of the melting point of the flux (68) and below that of the melting point of the alloy (64). The flux is thus melted as it enters the furnace. It coats the solid alloy and the furnace refractory lining (46) to prevent contact between the refractories and the molten metal unitl the lithium content of the aluminum has been reduced to an acceptable level. A rotation of the furnace moves the alloy (64) and molten flux (68) toward a lower and hotter end at which the temperature is such to melt the aluminum. At this time the lithium is removed from the alloy (64) and is absorbed within the flux (68). The aluminum (70) is then drained from the furnace at its lower end.
REFERENCES:
patent: 710493 (1902-10-01), Moeser et al.
patent: 1180435 (1916-04-01), Robison
patent: 2028390 (1936-01-01), Hanson
patent: 2195217 (1940-03-01), Lindenberger et al.
patent: 2470305 (1949-05-01), Gross
patent: 2621120 (1952-12-01), Pedersen et al.
patent: 2810635 (1957-10-01), Cooper
patent: 3397056 (1968-08-01), Layne et al.
patent: 3856511 (1974-12-01), Becker et al.
patent: 4337929 (1982-07-01), Evans
Badger Douglas V.
Small Billy L.
Stanfeld Philip K.
Andrews Melvyn J.
Barnard Delbert J.
Heberer Eugene
Pauly Joan H.
The Boeing Company
LandOfFree
Method of removing lithium from aluminum-lithium alloys does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of removing lithium from aluminum-lithium alloys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of removing lithium from aluminum-lithium alloys will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2395124