Apparatus for obtaining silicon from fluosilicic acid

Details Apparatus for obtaining silicon from fluosilicic acid Apparatus for obtaining silicon from fluosilicic acid

1984-01-09

1986-07-01

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including heat exchanger for reaction chamber or reactants...

75844, 422241, 423350, B01J 1000, B01J 1926, C01B 3302, C22B 6100

Patent

active

045979480

ABSTRACT:
Apparatus 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. The melt separation is provided by openings in the reaction chamber wall between about 2 and 3.5 millimeters in width. The Si is retained within the reaction chamber due to its surface tension.

REFERENCES:
patent: 2374511 (1945-04-01), Upham
patent: 2708156 (1955-05-01), Paoloni
patent: 2816828 (1957-12-01), Benedict et al.
patent: 2826491 (1958-03-01), Findlay
patent: 3025144 (1962-03-01), Schallis
patent: 3336431 (1967-08-01), Buddulph
patent: 3393054 (1968-07-01), Ruprecht et al.
patent: 3692294 (1972-09-01), Ishimatsu et al.
patent: 3847596 (1974-11-01), Holland et al.
patent: 4059416 (1977-11-01), Matovich
patent: 4102765 (1978-07-01), Fey et al.
patent: 4158695 (1979-06-01), Ishizuka et al.
patent: 4172708 (1979-10-01), Wu et al.
patent: 4188368 (1980-02-01), Wolf et al.
patent: 4312700 (1982-01-01), Helmreich et al.
patent: 4314525 (1982-02-01), Hsu et al.
patent: 4356152 (1982-10-01), Berkman et al.
patent: 4366024 (1982-12-01), Ast et al.
patent: 4401440 (1983-08-01), Alink
patent: 4401467 (1983-08-01), Jordan
Quarterly Progress Report No. 11, "Novel Duplex Vapor-Electrochemical Method for Silicon Solar Cells", V. Kapur et al., Oct. 31, 1978.
"Silicon by Sodium Reduction of Silicon Tetrallouride", A. Sanjurjo et al., Journal of Electrochem. Soc., vol. 128, No. 1, pp. 179-183, Jan. 1981.

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