Silicon smelting process

Details Silicon smelting process Silicon smelting process

1989-10-30

1991-03-05

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

373 22, C22B 400

Patent

active

049974742

ABSTRACT:
A silicon smelting furnace and a process for utilizing this furnace for the production of silicon is described. The process involves a process in which equilmolar proportions of silicon carbide and silicon dioxide are charged to the reaction zone of a silicon furnace. Above the furance is placed a shaft containing particulate carbon in the amount of 2 moles of carbon per mole of silicon dioxide charged to the reaction zone. As energy is applied to the reaction zone, molten silicon, gaseous silicon monoxide, and gaseous carbon monoxide are formed, the gases passing through the shaft of carbon, converting the carbon to silicon carbide. The silicon carbide, so formed, is combined with an equimolar proportion of silicon dioxide, and the cycle is repeated. Aside from an initial charge of silicon carbide, the feeds to the smelting furnace are silicon dioxide and carbon, silicon carbide being formed concurrently in a bed of carbon separated from the furnace reaction zone during the smelting cycle.

REFERENCES:
patent: 875672 (1907-12-01), Potter
patent: 3887359 (1975-06-01), Enger et al.
patent: 4213599 (1980-07-01), Dewing et al.
patent: 4269620 (1981-05-01), Johannson
patent: 4366137 (1982-12-01), Lask
patent: 4571259 (1986-02-01), Fey et al.
patent: 4865643 (1989-09-01), Goins
Muller et al., Scand. J. Metall., 1 (1972) pp. 145-155.
Chemical Abstracts, vol. 82:24, 6/16/75, p. 180, abstract no. 159017a.
Chemical Abstracts, vol. 69:12, 9/16/68, abstract no. 48877t.
Elektorwarme International, vol. 34:B2, 4/76, pp. B81-B84.
Miller et al., J. Am. Ceram. Soc., (1979) 62:3-4, pp. 147-149.
Kennedy et al., Proc. Br. Ceram. Soc., 33:Far. Sci. 3 (1983), pp. 1-15.

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