Title:
METHOD FOR PRODUCING TANTALUM (TA) POWDER USING EUTECTIC ALLOYS
Document Type and Number:
WIPO Patent Application WO/2011/129565
Kind Code:
A2
Abstract:
The present invention relates to a method for producing tantalum (Ta) powder from a waste tantalum (Ta) target using eutectic alloys. The method comprises the following steps: removing contaminants from the surface of a waste tantalum (Ta) target by means of a chemical or physical method; weighing the waste tantalum (Ta) target from which contaminants are removed and a eutectic reaction element, and feeding the waste tantalum target and the eutectic reaction element at a desirable ratio into the interior of plasma equipment; reducing the pressure inside the plasma equipment, and injecting reaction gas and applying electric power to the interior of the plasma equipment so as to form a low-power plasma and produce tantalum (Ta) eutectic alloys; applying a high-power plasma to the tantalum (Ta) eutectic alloys to produce an ultra-fine tantalum (Ta) eutectic alloy powder; heat-treating the thus-produced tantalum (Ta) eutectic alloy powder; and removing the eutectic reaction element from the heat-treated tantalum (Ta) eutectic alloy powder using a chemical method to produce high-purity ultra-fine tantalum (Ta) powder.
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 Metropolitan City 405-310, 405-310, KR)
양승호 (인천광역시 남동구 고잔동 693-1 남동공단 2단지 123블럭 2롯트 희성금속 주식회사내, 405-310 Incheon, 405-310, KR)
HONG, Gil-Su (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 Metropolitan City 405-310, 405-310, KR)
양승호 (인천광역시 남동구 고잔동 693-1 남동공단 2단지 123블럭 2롯트 희성금속 주식회사내, 405-310 Incheon, 405-310, KR)
HONG, Gil-Su (123-Block 2-Lot Namdong Industrial Estate 2-complex,693-1, Gojan-dong, Namdong-gu, Incheon 405-310, 405-310, KR)
Application Number:
KR2011/002530
Publication Date:
October 20, 2011
Filing Date:
April 11, 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)
YANG, Seung-Ho (123-Block 2-Lot Namdong Industrial Estate 2-complex,693-1, Gojan-dong, Namdong-gu, Incheon Metropolitan City 405-310, 405-310, KR)
양승호 (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)
YANG, Seung-Ho (123-Block 2-Lot Namdong Industrial Estate 2-complex,693-1, Gojan-dong, Namdong-gu, Incheon Metropolitan City 405-310, 405-310, KR)
양승호 (인천광역시 남동구 고잔동 693-1 남동공단 2단지 123블럭 2롯트 희성금속 주식회사내, 405-310 Incheon, 405-310, KR)
International Classes:
B22F9/14; B22F1/00; C22B34/24; C22C27/02
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)
Download PDF:
Claims: