Process reacts alumina hydrate with HF and NaF from silicon-production process. Cryolite is produced by adding reaction step to process that makes high-purity silicon from fluorosilicic acid. New extended process has been demonstrated in laboratory and could be used in commercial plants.
Cryolite Byproduct in Silicon Production
NASA Tech Briefs ; 7 , 1
1982-03-01
Miscellaneous
No indication
English
Light Touch: The mystery of cryolite
British Library Online Contents | 2014
|Producing Cryolite From Waste Sodium Fluoride
NTRS | 1982
|European Patent Office | 2015