Nippon Kokan Kabushiki Kaisha

Osamu Terada

Kiyomi Taguchi

Teruyuki Hasegawa

Noriyuki Hiraga

Youichi Nimura

Seiji Nagai

Hiroshi Mihashi

Narito Kimura

Noriaki Morishita

Masayuki Hammyo

A gas blowing nozzle is produced by molding a non-porous substance into a molding frame under pressure and at the same time positioning a plurality of gas passageways forming members at predetermined spaces and distances from each other. The passageway holes have cross sectional shapes as desired, so that the gas blowing may be accurately controlled to perform refining of molten metal.

Gas blowing nozzle, and production and usage thereof

There is disclosed the distribution of an amorphous refractory in a case where a lining frame is positioned within a molten metal vessel preliminarily lined with a permanent lining refractory and the amorphous refractory is cast into the space between the permanent lining refractory and the lining frame thereby applying a lining to the inner surface of the vessel. A conical distributor is arranged above the lining frame and the amorphous refractory is continuously delivered from a rotary chute onto the distributor so as to describe a concentric path of moving falling points.

Method and apparatus for casting an inner lining amorphous refractory

Growing community of inventors

Fukuyama, Japan

Osamu Terada