Title:
METHOD FOR PREPARING FINE RUTHENIUM POWDER HAVING HIGHER PURITY USING WASTE RUTHENIUM TARGET
Document Type and Number:
WIPO Patent Application WO/2011/118931
Kind Code:
A2
Abstract:
The present invention relates to a method for preparing fine ruthenium powder having higher purity from a waste ruthenium target, wherein the object of the method is to overcome the disadvantages of using conventional wet preparation methods for preparing powder, including high costs and long preparation time due to a complicated preparation process, and environmental problems for treating waste water with acids. In order to address the problems, the present invention provides a method comprising the following steps: chemically or physically removing contaminant sources on the surface of a waste ruthenium target; mounting the surface-treated waste ruthenium target on the interior of a plasma chamber and controlling a plasma torch; reducing pressure using a vacuum device and forming a plasma; preparing a powder having higher purity; and fine-grinding the powder to obtain fine ruthenium powder having higher purity.
Inventors:
YOON, Won-Kyu (123-Block 2-Lot Namdong Industrial Estate 2-complex,693-1, Gojan-dong, Namdong-gu, Incheon 405-310, 405-310, KR)
윤원규 (인천광역시 남동구 고잔동 693-1 남동공단 2단지 123블럭 2롯트 희성금속 주식회사내, 405-310 Incheon, 405-310, KR)
YANG, Seung-Ho (123-Block 2-Lot Namdong Industrial Estate 2-complex,693-1, Gojan-dong, Namdong-gu, Incheon 405-310, 405-310, KR)
윤원규 (인천광역시 남동구 고잔동 693-1 남동공단 2단지 123블럭 2롯트 희성금속 주식회사내, 405-310 Incheon, 405-310, KR)
YANG, Seung-Ho (123-Block 2-Lot Namdong Industrial Estate 2-complex,693-1, Gojan-dong, Namdong-gu, Incheon 405-310, 405-310, KR)
Application Number:
KR2011/001780
Publication Date:
September 29, 2011
Filing Date:
March 15, 2011
Export Citation:
Assignee:
HEE SUNG METAL LTD. (548-1, Gajwa 3-dong Seo-gu, Incheon 404-253, 404-253, KR)
희성금속 주식회사 (인천광역시 서구 가좌 3동 548-1번지, 404-253 Incheon, 404-253, KR)
YOON, Won-Kyu (123-Block 2-Lot Namdong Industrial Estate 2-complex,693-1, Gojan-dong, Namdong-gu, Incheon 405-310, 405-310, KR)
윤원규 (인천광역시 남동구 고잔동 693-1 남동공단 2단지 123블럭 2롯트 희성금속 주식회사내, 405-310 Incheon, 405-310, KR)
희성금속 주식회사 (인천광역시 서구 가좌 3동 548-1번지, 404-253 Incheon, 404-253, KR)
YOON, Won-Kyu (123-Block 2-Lot Namdong Industrial Estate 2-complex,693-1, Gojan-dong, Namdong-gu, Incheon 405-310, 405-310, KR)
윤원규 (인천광역시 남동구 고잔동 693-1 남동공단 2단지 123블럭 2롯트 희성금속 주식회사내, 405-310 Incheon, 405-310, KR)
International Classes:
C23C14/00; B22F9/14; C23C14/34
Attorney, Agent or Firm:
SHINN, Kwan Ho (Rm.1209 Seocho World Officetel, 1355-3 Seocho 2-dong, Seocho-ku, Seoul 137-862, 137-862, KR)
Claims:
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