Process for the preparation of rare-earth-silicon alloys

Details Process for the preparation of rare-earth-silicon alloys Process for the preparation of rare-earth-silicon alloys

1978-03-07

1979-01-23

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75134S, 75152, C21C 700, C22C 3304, C22C 3800

Patent

active

041359216

ABSTRACT:
A method for the production of a rare-earth-silicon alloy useful as an additive in the production of various ferrous metals. The process comprises the bringing together and reaction of one or more rare-earth metal compounds, an elemental silicon source and an elemental aluminum source in the presence of calcium oxide. High recoveries of the rare-earth metals are found, little rare-earth metal being lost to the slag produced from the reaction.

REFERENCES:
patent: 2926080 (1960-02-01), Motz et al.
patent: 3264093 (1966-08-01), Sump
patent: 3537844 (1970-11-01), Hirschhorn et al.
patent: 3802865 (1974-04-01), Ohrubo et al.
patent: 3953579 (1976-04-01), Herchenroeder
patent: 4018597 (1977-04-01), Staggers
Perri et al., "Rare Earth Metal Disilicides" J. Phys. Chem. 63 (1959) 616.

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