Boron removal in silicon purification

Details Boron removal in silicon purification Boron removal in silicon purification

1980-09-09

1982-01-26

Cooper, Jack

Chemistry of inorganic compounds

Silicon or compound thereof

Elemental silicon

23295R, 23296, 156DIG64, 423297, B01D 900, C01B 3302

Patent

active

043128483

ABSTRACT:
A method of removing boron impurity in a process for purifying silicon is disclosed wherein silicon is crystallized from a solvent metal. The method comprises the steps of providing a molten body containing silicon, the remainder aluminum and impurities and providing a metal selected from the group consisting of titanium, vanadium and zirconium therein, the metal from the group forming a reaction product with boron and permitting the reaction product to settle in the body for removal purposes.

REFERENCES:
patent: 2471899 (1949-05-01), Regner
patent: 2651922 (1953-09-01), Graham
patent: 2866701 (1958-12-01), Strauss
patent: 3008887 (1961-11-01), Herglotz
patent: 3069240 (1962-12-01), Armand
patent: 3097068 (1963-07-01), Litz et al.
patent: 3933981 (1976-01-01), Wakefield et al.
patent: 4094731 (1978-06-01), Keyser et al.
patent: 4246249 (1981-01-01), Dawless
patent: 4256717 (1981-03-01), Dawless
Litz et al., "Second Joint AIChe Meeting", May 19-22, 1968, Preprint 37B.

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