Nippon Kokan Kabushiki Kaisha

Akira Masui

Kenzo Yamada

Kenji Takahashi

Yoshio Miyashita

Katsuhiko Tachibana

Akinori Ninomiya

Yoshihiro Kato

A method of regenerating molten slag remaining in a furnace or converter or the like after tapping of steel, by adding solid carbon and flux to the slag, blowing oxygen into the slag, heating to a temperature of more than 1500.degree. C and agitating. The regenerated slag can be controlled in composition to be most suitable for such ultimate uses as lime, cement, etc.

Method of treating molten slags in steel making process

In a steel making process with an oxygen top-blown converter when a certain inclining angle (.theta.) is given within a range of 0&lt;.theta..ltoreq.15.degree. to normal axis of an oxygen blow lance being supported at an upper portion of the lance and a certain number of rotation (.nu.) is given within the range of 0&lt;.nu..ltoreq.15 rpm to the lance, the blow of oxygen is possible to be properly used as the refining reactions are advanced without any delay of slagging reaction and any stagnation of non-slagging lime during blowing.

Steel making process by oxygen top-blown converter

Growing community of inventors

Kawasaki, Japan

Akira Masui