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

"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 Commercial Geography A Book for High Schools, Commercial Courses, and Business Colleges by Redway, Jacques W. (Jacques Wardlaw)