Nippon Steel Corporation

Fuji Electric Co., Ltd.

Yujiro Ueda

Toru Yoshida

Keizi Arima

Hiroshi Narita

Shigeharu Kawai

Nobuhiro Sakanashi

Katsumi Hachiga

A converter pressure control device for use in a converter waste gas disposing device wherein a calculator determines the difference between the pressure in a converter and atmospheric pressure and sets an operating parameter according to the detected difference. A pressure controller generates a control signal in accordance with the operating parameter and the difference in converter pressure and a predetermined value. The control signal is used to operate a damper to control the flow of waste gas through the converter.

Convertor pressure control device in a convertor waste gas disposing

A method and apparatus for directly observing the slag-foaming conditions in a vessel interior. A device for observing the vessel interior light is disposed in a throughhole extending through the side wall of a top-blowing or top- and bottom-blowing converter to reach the vessel interior. The converter operation can be carried out at a high accuracy on the basis of this observation.

Method and apparatus for measuring slag-foam conditions within a

A method for operating a converter on the basis of a direct observation of the slag-forming conditions in a vessel interior. A device for observing the vessel-interior light is disposed in a throughhole extending through the side wall of a top-blowing or top- and bottom-blowing converter to reach the vessel interior. The converter operation can be carried out at a high accuracy of the slag-amount control on the basis of this observation.

Method for operating a converter used for steel refining

Growing community of inventors

Sakai, Japan

Yujiro Ueda