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:
Jun. 15, 2021
Filed:
May. 11, 2017
Jfe Steel Corporation, Tokyo, JP;
Satoshi Kinoshiro, Kawasaki, JP;
Toshiyuki Ito, Kawasaki, JP;
Ryo Kawabata, Oota, JP;
Toshiro Ishige, Yokohama, JP;
Kyoko Fujimoto, Chiba, JP;
Masao Inose, Chiba, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A method for desulfurizing molten steel comprising taking a sample out from molten steel after tapping from a converter or during secondary refining and analyzing the sample rapidly with high accuracy by a method comprising a high frequency induction heating step wherein the sample is combusted and oxidized under the high frequency induction heating in an oxygen atmosphere having an oxygen purity of 99.5 vol % or more to convert S in the sample into SOand an analyzing step wherein SO-containing gas produced in the high frequency induction heating step is analyzed through an ultraviolet fluorescence method to quantify S concentration of the sample.