Hall process

American  

noun

1. a process in which aluminum is refined by electrolytic reduction of alumina fused with cryolite.

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Etymology

Origin of Hall process

After Charles Martin Hall

Example Sentences

The music world has been closely watching the results of the secretive Rock Hall process, after the organization this year dismissed a large contingent of its influential nominating committee and, according to reports, made an effort to expand its membership with younger voters and more women.

From New York Times

"This is the greatest contribution to aluminum metallurgy since the Hall process of 1886�if it is cheap as the inventor says."

From Time Magazine Archive

The process has been repeatedly improved, and under the patents covered by the Hall process the crude metal is now produced at a market price of about eighteen cents per pound.

From Project Gutenberg