Kyushu Refractories Co., Ltd.

Kyusyu Refractories Co., Ltd.

Noboru Shinoda

Akira Watanabe

Yoshimitsu Takeuchi

Tetsuya Sugimoto

Yukio Kusaka

Takanori Shimizu

Tetsusaburo Isono

Kenji Fujiwara

The present invention relates to silicon nitride composite refractories having silicon nitride bonds therein and having an increased thermal shock-resistance, an improved molten steel-resistance and an improved mechanical strength, which consists of silicon nitride at 20 to 60 wt %, refractory materials at 10 to 50 wt % and boron nitirde at 1 to 30 wt %, or additionally carbon fibers of 0.5 to 10 wt %. The above described characteristics can be realized because the silicon nitride bonds are bonding structures.

Silicon nitride composite refractories

The invention relates to carbonaceous bricks having resistance to fire and corrosion, capable of withstanding mechanical impact to which the conventional carbonaceous bricks were vulnerable, and usable in an oxidizing atmosphere, and the method as producing the same. The invention has for an object to obtain carbonaceous bricks having said high properties by mixing less than 60 weight % of inorganic material with 40.about.100 weight % of pellets consisting of carbonaceous material containing substantially more than 70 weight % of carbon and a bonding agent comprising pulverized phenol resin, liquid thermosetting resin and/or setting accelerator, bricks formed therefrom containing more than 40 weight % of carbon.

Carbonaceous bricks and the method for producing the same

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Bizen, Japan

Noboru Shinoda