METHOD FOR PRODUCTION OF POWDER OF HIGH-PURITY SILICON Russian patent published in 1995 - IPC

Abstract RU 2049056 C1

FIELD: nonferrous metallurgy. SUBSTANCE: ground technical silicon is treated with 4-20% solution of HCl, washed and treated at the second stage with solution of mass ratio of HCl:HF=(24-10):1. EFFECT: reduced ecological hazard of solution, improved corrosion-resistance of equipment and decreased consumption of hydrofluoric acid. 1 tbl

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RU 2 049 056 C1

Authors

Vodop'Janov A.G.

Kozhevnikov G.N.

Dates

1995-11-27—Published

1993-04-12—Filed