Toshiba Ceramics Co., Ltd.

Nippon Steel Corporation

Sumitomo Metal Industries, Inc.

Masuo Sugie

Takashi Watanabe

Toshio Kawamura

Takumi Nishio

Kazumi Arakawa

Tsutomu Nagahata

Takashi Matsushita

Nobiru Komatsu

Yoshiro Aiba

Kaoru Nishikido

Koji Kurihara

Haruo Ootuka

A molten metal discharging device comprising:

Molten metal discharging device

A molten metal discharging device including a stationary plate of refractory material and adapted to be mounted at a bottom portion of a container for accommodating molten metal, the stationary plate having a molten metal passage bore for permitting the molten metal from the container to be discharged therethrough, and a slide plate of refractory material slidable along a lower face of the stationary plate and adapted to open or close the passage bore by being slidably displaced relative to the stationary plate, wherein the stationary plate includes a stationary plate main body having the passage bore therein, at least a major part of the main body being made of porous refractory material, the stationary plate main body having a chamber around a circumferential wall part of the passage bore and a gas introduction hole communicated with the chamber for introducing a gas from outside into the chamber, the circumferential wall part having gas supply hole elements for supplying the gas therethrough from the chamber to the passage bore enables to reduce the heat dissipation through the stationary plate and to thereby reduce the risk of clogging of the molten metal passage bore in the stationary plate due to the solidification of the molten metal or the like.

A porous ceramic structure adapted in a molten metal container in a way such that the structure pierces the wall of the container for introducing a gas thereinto. The structure comprises a main body made of a porous ceramic material and having a recession on the side adjacent to the outer surface of the container and a sub-body made of a porous ceramic material fitted in the recession of the main body. This ceramic structure enables the operator to make timely judgment for its replacement with new one before it breaks down to cause leakage of molten metal from its container.

Porous ceramic structure

Growing community of inventors

Tokoname, Japan

Masuo Sugie