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:
Dec. 23, 2003
Filed:
Dec. 14, 2001
Hideaki Kimura, Tokyo, JP;
Atsushi Ishikawa, Tokyo, JP;
Hiromi Ishii, Muroran, JP;
Masayuki Arai, Muroran, JP;
Jun Aoki, Muroran, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
The present invention provides a lade refining apparatus capable of suppressing skull deposition in a vacuum/decompression chamber and performing molten steel agitation, slag reforming and degassing efficiently, and a ladle refining method using the apparatus. The apparatus includes a vacuum/decompression chamber directly coupled to a top of a ladle, and is designed to have inert gas blown into the ladle for agitation of molten steel in the ladle. An inner diameter of a shaft of the vacuum/decompression chamber is not larger than an inner diameter of a top end of the ladle, but not smaller than a projected diameter of a bulging portion of a molten steel surface formed by the gas blown into the ladle.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile