Nippon Crucible Co., Ltd.

Norio Honda

Tadao Sasaki

Kunihiko Shiraishi

Hideaki Ohashi

Kenzo Takeda

Fumiyuki Inoue

Hiroyuki Suzuki

Akio Ueda

Disclosed is a taphole plugging composition for metal melting apparatus, the composition comprising (a) a refractory aggregate having a maximum particle size of 5 mm or less, (b) graphite and silicon nitride each having a maximum particle size of 0.2 mm or less, (c) a refractory clay, (d) a compatibilized binder mixture comprising a phenolic resin, a ketone compound and a pitch, and (e) an organic fine fiber.

Tap hole blocking material for metal melting apparatus

A colored refractory material for lining an instrument/apparatus used at a high temperature is formed by mixing a powder of a raw material containing ceramics with a coloring agent and kneading with a liquid using a binder. The refractory material is put in lining for a portion being in contact with a high temperature molten substance or being exposed to a high temperature atmosphere, and is dried by heating while adjusting a temperature and a heating time on the basis of color change on the surface of the refractory material.

Method of drying lining refractory material for instrument/apparatus

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Toyota, Japan

Norio Honda