Kyushu Refractories Co., Ltd.

Sumitomo Metal Industries, Inc.

Yasutoshi Mizuta

Akira Watanabe

Yasuo Nishikawa

Tetsuya Sugimoto

Takeo Okamura

Shigeyuki Takanaga

Hirokuni Takahashi

Yoshio Hatayama

Junji Kariya

Satomi Kawahara

Masaaki Koba

Takeshi Iba

Yoshichika Yanagibashi

Monolithic refractory and gunning material using the refractory

The present invention relates to an injection material for the hot repairing of a blast furnace and an injection method of applying the same. An injection material comprising a refractory material, which was previously adjusted in particle size, a binder, a hardening agent and a hardening-accelerator is fed to a pressure pump having a mixing function and applied to a portion to be repaired of a blast furnace with mixing in said pump. Thus, since the hardening ingredient is not added until the pump portion, the workability of the repair material can be secured in of a blast furnace to be repaired, said injection material being mixed in said pump. Thus, the injection repairing of the blast furnace can be achieved without being influenced by an atmosphere within the furnace.

Injection material for use in blast furnace

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

Growing community of inventors

Okayama, Japan

Yasutoshi Mizuta