公开(公告)号：US09840755B2

公开(公告)日：2017-12-12

申请号：US14777835

申请日：2013-06-12

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Byung Moon Moon ,  Gang June Kim ,  Jae Yoon Lee

IPC: C22B34/12 ,  C22B9/05 ,  C22B9/22 ,  C22B9/04 ,  C22B9/00 ,  F27D7/02 ,  F27D7/06 ,  F27D11/06 ,  F27B14/06 ,  H05B6/26 ,  F27D99/00

CPC classification number: C22B34/1268 ,  C22B9/003 ,  C22B9/04 ,  C22B9/05 ,  C22B9/226 ,  C22B34/1218 ,  C22B34/1295 ,  F27B14/061 ,  F27D7/02 ,  F27D7/06 ,  F27D11/06 ,  F27D99/0006 ,  F27D2007/063 ,  F27D2007/066 ,  H05B6/26 ,  Y02P10/23 ,  Y02P10/253

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.