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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.:

US 9840755 B1

PDFFull Text
Date of Patent:
Dec. 12, 2017

Filed:

Jun. 12, 2013

Refining device and refining method for titanium scraps and sponge titanium using deoxidising gas

Applicant:

Korea Institute of Industrial Technology, Cheonan-si, KR;

Inventors:

Byung Moon Moon, Seoul, KR;

Gang June Kim, Bucheon-si, KR;

Jae Yoon Lee, Seoul, KR;

Assignee:

KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, Cheonan-si, KR;

Attorney:

Cantor Colburn LLP

Primary Examiner:

George Wyszomierski

Assistant Examiner:

Tima M McGuthry Banks

Int. Cl.
CPC ...
C22B 34/12 (2006.01); C22B 9/05 (2006.01); C22B 9/22 (2006.01); C22B 9/04 (2006.01); C22B 9/00 (2006.01); F27D 7/02 (2006.01); F27D 7/06 (2006.01); F27D 11/06 (2006.01); F27B 14/06 (2006.01); H05B 6/26 (2006.01); F27D 99/00 (2010.01);
U.S. Cl.
CPC ...
C22B 34/1268 (2013.01); C22B 9/003 (2013.01); C22B 9/04 (2013.01); C22B 9/05 (2013.01); C22B 9/226 (2013.01); C22B 34/1218 (2013.01); C22B 34/1295 (2013.01); F27B 14/061 (2013.01); F27D 7/02 (2013.01); F27D 7/06 (2013.01); F27D 11/06 (2013.01); F27D 99/0006 (2013.01); H05B 6/26 (2013.01); F27D 2007/063 (2013.01); F27D 2007/066 (2013.01); Y02P 10/23 (2015.11); Y02P 10/253 (2015.11);
Abstract

Provided are a method and apparatus for refining titanium scraps and sponge titanium, which can remove oxygen from a melt by supplying a deoxidizing gas to the surface of the melt in order to refine titanium scraps and sponge titanium. The method for refining titanium scraps and sponge titanium comprises supplying hydrogen ions and electrons in plasma to a titanium melt to remove oxygen from the titanium melt surface having an oxide layer formed thereon. In addition, the apparatus comprises: a vacuum chamber; a crucible located in the vacuum chamber and configured to perform melting by the magnetic field of an induction coil in a state in which a melt and the inner wall of the crucible; a calcium gas supply means configured to supply calcium gas from the bottom of the crucible to the space between the inner wall of the crucible and the melt.

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