Kyushu Refractories Co., Ltd.

Kyusyu Refractories Co., Ltd.

Tetsuya Sugimoto

Akira Watanabe

Yasuo Nishikawa

Yoshio Hatayama

Yukio Kusaka

Yasutoshi Mizuta

Noboru Shinoda

Yasuhiro Makino

Takanori Shimizu

Kazuyasu Yabuki

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

Disclosed is a substance which is obtained by coating the surface of a specific iron-containing substance, through a specific procedure, with a material composed mainly of aluminum sulfate. The substance thus produced is useful as a catalyst for the removal of nitrogen oxides from an exhaust gas.

Catalyst for reduction of nitrogen oxides and method for manufacture

An excellent catalyst for the reduction of nitrogen oxides is obtained by mixing a specific aluminum-containing substance with a specific iron-containing substance in water and baking the resultant precipitate.

Method for manufacture of catalyst used for reduction of nitrogen oxides

Disclosed is a substance which is obtained by calcining an iron hydroxide or a water-containing iron oxide and coating the surface of the resultant calcined product with alumina. This substance is useful as a catalyst in the removal of nitrogen oxides from an exhaust gas containing the nitrogen oxides.

Catalyst for the reduction of nitrogen oxides and method for the

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Okayama, Japan

Tetsuya Sugimoto