Process for obtaining silicon from fluosilicic acid

Details Process for obtaining silicon from fluosilicic acid Process for obtaining silicon from fluosilicic acid

1982-12-27

1984-04-10

Meros, Edward J.

Chemistry of inorganic compounds

Silicon or compound thereof

Elemental silicon

156DIG64, 156616R, 422199, 422187, C01B 3302

Patent

active

044420820

ABSTRACT:
Process for producing low cost, high purity solar grade Si wherein a reduction reaction, preferably the reduction of SiF.sub.4, by an alkali metal (Na preferred) is carried out by jetting a spray of reactants into a reaction chamber at a rate and temperature which causes the reaction to take place far enough away from the entry region to avoid plugging of reactants at the entry region and wherein separation in the melt is carried out continuously from the reaction and the Si can be cast directly from the melt.

REFERENCES:
patent: 4188368 (1980-02-01), Wolf et al.
J. Electrochemical Soc., vol. 128, No. 1, pp. 179-184 (Jan. 1981).
ERDA/JPL 954471-77/3, Quarterly Progress Report #11, "Novel Duplex Vapor-Electrochemical Method for Silicon Solar Cells", (1978).

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