Mitsui Engineering and Shipbuilding Company Limited

Seiju Uchida

Toru Degawa

Akio Hashimoto

Gen Okuyama

Tohei Ototani

Makoto Ebata

Kozo Fujiwara

Susumu Matsui

Kouzou Fujiwara

Takashi Satou

Ti or a high-Ti alloy is melted in a container composed of high-purity CaO materials on its inner sides. The materials are composed of not less than 99% by weight of CaO, not more than 0.1% by weight of SiO.sub.2, not more than 0.02% by weight of Fe.sub.2 O.sub.3, and not more than 0.5% by weight in total of other metal oxides under a non-oxidizing atmosphere. CaO refractories for use in the melting of Ti or a high-Ti alloy contains not less than 99% by weight of CaO, not more than 0.1% by weight of SiO.sub.2, 0.02% by weight of Fe.sub.2 O.sub.3, and not more than 0.5% by weight of other metal oxides.

Method for melting Ti or a high-Ti alloy in CaO refractories

A lanthanide-containing alloy is produced by retaining the melt of this alloy by the use of a container having the inner surface formed of a calcia-based refractory possessing a CaO content of not less than 90% by weight in a non-oxidizing atmosphere.

Method for production of lanthanide-containing alloy

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Tamano, Japan

Seiju Uchida