Shinagawa Refractories Co., Ltd.

Yoshihisa Hamazaki

Kenji Ichikawa

Hiroshi Kyoden

Takashi Yamamura

Shingo Nonaka

Masashi Mori

Yukitoshi Kubota

Masumi Toda

Makoto Nanba

Alumina-spinel type monolithic refractories

The present invention relates to a two-part gunning refractory composition wherein fine powders of a refractory aggregate and superfine refractory powders are previously made into the form of a slurry containing therein a deflocculant, thereby reducing the amount of aluminous cement and also reducing the amount of water to achieve a deposit applied by gunning having a quality comparable to one produced by casting.

Two-part gunning refractory composition

A low cement refractory gun mix is disclosed. The gun mix comprises a coarse refractory portion having a particle diameter of at least 74 microns and a fine powder portion having a particle diameter of at most 74 microns. The gun mix is prepared by forming the fine powder portion into a slurry and deflocculating it prior to mixing it with the coarse refractory portion rather than deflocculating it when it is introduced into a spray gun. The gun mix has an extremely low cement and water content. Accordingly, a sprayed deposit of high packing density can be obtained which is equal in quality with deposits produced by vibration molding or casting. The gun mix is appropriate for use in forming the entire work lining of containers for molten metal.

Refractory gun mix

Growing community of inventors

Okayama, Japan

Yoshihisa Hamazaki