Low oxygen-content metallurgical silicon and ferrosilicon

Details Low oxygen-content metallurgical silicon and ferrosilicon Low oxygen-content metallurgical silicon and ferrosilicon

1996-01-11

1998-07-21

Wyszomierski, George

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

75252, 420578, C22C 2918

Patent

active

057829551

ABSTRACT:
A metallurgical silicon or ferrosilicon in the form of granulates having an average size of less than 10 mm and in which the total oxygen concentration is less than 0.05% by weight, and a process for manufacture of this silicon or ferrosilicon consisting of a carbothermal reduction of silica in an electric oven, chlorine-based refining of the liquid metal, and granulation of the refined liquid metal in water under an inert atmosphere. The silicon may be used for silicone manufacture or as a constituent of an aluminum alloy, and the ferrosilicon, as a steel additive used to obtain magnetic sheet metals for electrical construction.

REFERENCES:
patent: 4532090 (1985-07-01), Dietze et al.
patent: 5094832 (1992-03-01), Forwald et al.
patent: 5532063 (1996-07-01), Shindoh et al.
patent: 5605583 (1997-02-01), Margaria et al.
ASM Handbook, vol. 2, Properties and Selection, pp. 1154-1155, ASM, 1990.
Filipovich et al., "Proceedings of International Symposium on Ferro-Alloys and Silicon Metal", Sep. 17-21, 1975.

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