Steel making process by oxygen top-blown converter
AssigneeNippon Kokan Kabushiki Kaisha
InventorsAkira Masui, Kenzo Yamada, Akinori Ninomiya, Katsuhiko Tachibana, Yoshihiro Kato
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Abstract
In a steel making process with an oxygen top-blown converter when a certain inclining angle (.theta.) is given within a range of 0<.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<.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.
Claims2
In a steel making process with an oxygen top blown converter wherein oxygen is blown in through a lance and wherein the hot spot formed by blowing is moved during blowing, the improvement which comprises maintaining the inclination angle (.theta.) of the lance from the supporting point of its upper portion within the range of 0 <
- .theta. .ltoreq. 15.degree. to the normal vertical axis, and maintaining the number of rotations of the lance (.nu.) within the range of 0 <
- .nu. .ltoreq. 15 rpm.
Dependencies are inferred from the claim text.