The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1982
Filed:
Feb. 17, 1981
Applicant:
Inventors:
Tatsukichi Chino, Chiba, JP;
Takuo Imai, Chiba, JP;
Masaaki Tsukamoto, Chiba, JP;
Ryuichi Asaho, Chiba, JP;
Nagayasu Bessho, Chiba, JP;
Kyoji Nakanishi, Chiba, JP;
Assignee:
Kawasaki Steel Corporation, Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
266265 ; 75 59 ; 75 60 ;
Abstract
A tuyere for blowing an agitating gas into molten steel is arranged in the bottom of an oxygen top-blown converter in order to improve the refining effect of molten steel and has a ratio of blow sectional area S (cm.sup.2) to inner peripheral length L (cm) of not more than 0.17, preferably not more than 0.125.