JPS6473028A - Recovering method for high purity tantalum from scrap tantalum - Google Patents

Recovering method for high purity tantalum from scrap tantalum

Info

Publication number
JPS6473028A
JPS6473028A JP22973087A JP22973087A JPS6473028A JP S6473028 A JPS6473028 A JP S6473028A JP 22973087 A JP22973087 A JP 22973087A JP 22973087 A JP22973087 A JP 22973087A JP S6473028 A JPS6473028 A JP S6473028A
Authority
JP
Japan
Prior art keywords
scrap
high purity
away
tantalum
melting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP22973087A
Other languages
Japanese (ja)
Inventor
Michio Nanjo
Koji Mimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tosoh Corp
Original Assignee
Tosoh Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tosoh Corp filed Critical Tosoh Corp
Priority to JP22973087A priority Critical patent/JPS6473028A/en
Publication of JPS6473028A publication Critical patent/JPS6473028A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

PURPOSE:To recover high purity Ta in a single process by melting scrap Ta by a hydrogen plasma arc or hydrogen atmosphere arc and removing Mn, oxygen and extremely small quantities of impurities away. CONSTITUTION:Scrap Ta of a used Ta condenser, etc., is heated and melted by a hydrogen plasma arc or hydrogen atmosphere arc, where MnO and Mn are evaporated to remove away from Ta. Oxygen in molten Ta is brought into contact with reactive hydrogen and is removed away in the form of H2O. Extremely small quantities of metallic impurities such as Fa and Al are partially evaporated away at the time of heating and melting and furthermore form hydride to promote its evaporation, by which the concentration of scrap Ta is reduced to the low one. The velocity of oxidation is furthermore improved by adding carbonaceous material or Al powder to scrap Ta at the time of melting the same. In this case, high purity Ta can be recovered from scrap Ta in a short time.
JP22973087A 1987-09-16 1987-09-16 Recovering method for high purity tantalum from scrap tantalum Pending JPS6473028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22973087A JPS6473028A (en) 1987-09-16 1987-09-16 Recovering method for high purity tantalum from scrap tantalum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22973087A JPS6473028A (en) 1987-09-16 1987-09-16 Recovering method for high purity tantalum from scrap tantalum

Publications (1)

Publication Number Publication Date
JPS6473028A true JPS6473028A (en) 1989-03-17

Family

ID=16896793

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22973087A Pending JPS6473028A (en) 1987-09-16 1987-09-16 Recovering method for high purity tantalum from scrap tantalum

Country Status (1)

Country Link
JP (1) JPS6473028A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049188A1 (en) * 1999-02-17 2000-08-24 H.C. Starck, Inc. Refining of tantalum and tantalum scrap with carbon
KR20030003974A (en) * 2001-07-04 2003-01-14 한국지질자원연구원 Method for recovering tantalum from condenser scrap
KR100370269B1 (en) * 2000-09-08 2003-01-30 김영웅 A method for collecting tantalum form waste scraps containing tantalum
US6863750B2 (en) 2000-05-22 2005-03-08 Cabot Corporation High purity niobium and products containing the same, and methods of making the same
US7981191B2 (en) 2007-10-15 2011-07-19 Hi-Temp Specialty Metals, Inc. Method for the production of tantalum powder using reclaimed scrap as source material
JP2012021218A (en) * 2010-07-16 2012-02-02 Dowa Eco-System Co Ltd Method for recovering tantalum
JP2013528700A (en) * 2010-04-12 2013-07-11 ヒ スング メタル リミテッド Method for producing tantalum (Ta) powder using eutectic alloy

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55149770A (en) * 1979-05-11 1980-11-21 Shinku Yakin Kk Molding method for crude ingot of active metal or high- melting-point metal or alloy of these metals
JPS5611295A (en) * 1979-07-11 1981-02-04 Suzuki Sogyo Kk Printing method
JPS57120629A (en) * 1981-01-20 1982-07-27 Sumitomo Metal Ind Ltd Refining method
JPS60155627A (en) * 1983-11-29 1985-08-15 ザ　ユニオン　スチ−ル　コ−ポレイシヨン（オブ　サウスアフリカ）リミテツド Metal compound reduction and apparatus therefor
JPS6173845A (en) * 1984-09-19 1986-04-16 Toyo Soda Mfg Co Ltd Refining method of niobium
JPS61106731A (en) * 1984-10-30 1986-05-24 Shinku Yakin Kk Production of ingot of high melting active metallic alloy
JPS6280235A (en) * 1985-09-23 1987-04-13 メタルルジ　ホボケン−オ−バ−ペルト Production of refined tantalum or niobium

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55149770A (en) * 1979-05-11 1980-11-21 Shinku Yakin Kk Molding method for crude ingot of active metal or high- melting-point metal or alloy of these metals
JPS5611295A (en) * 1979-07-11 1981-02-04 Suzuki Sogyo Kk Printing method
JPS57120629A (en) * 1981-01-20 1982-07-27 Sumitomo Metal Ind Ltd Refining method
JPS60155627A (en) * 1983-11-29 1985-08-15 ザ　ユニオン　スチ−ル　コ−ポレイシヨン（オブ　サウスアフリカ）リミテツド Metal compound reduction and apparatus therefor
JPS6173845A (en) * 1984-09-19 1986-04-16 Toyo Soda Mfg Co Ltd Refining method of niobium
JPS61106731A (en) * 1984-10-30 1986-05-24 Shinku Yakin Kk Production of ingot of high melting active metallic alloy
JPS6280235A (en) * 1985-09-23 1987-04-13 メタルルジ　ホボケン−オ−バ−ペルト Production of refined tantalum or niobium

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049188A1 (en) * 1999-02-17 2000-08-24 H.C. Starck, Inc. Refining of tantalum and tantalum scrap with carbon
US6197082B1 (en) * 1999-02-17 2001-03-06 H.C. Starck, Inc. Refining of tantalum and tantalum scrap with carbon
US6863750B2 (en) 2000-05-22 2005-03-08 Cabot Corporation High purity niobium and products containing the same, and methods of making the same
KR100370269B1 (en) * 2000-09-08 2003-01-30 김영웅 A method for collecting tantalum form waste scraps containing tantalum
KR20030003974A (en) * 2001-07-04 2003-01-14 한국지질자원연구원 Method for recovering tantalum from condenser scrap
US7981191B2 (en) 2007-10-15 2011-07-19 Hi-Temp Specialty Metals, Inc. Method for the production of tantalum powder using reclaimed scrap as source material
JP2013528700A (en) * 2010-04-12 2013-07-11 ヒ スング メタル リミテッド Method for producing tantalum (Ta) powder using eutectic alloy
JP2012021218A (en) * 2010-07-16 2012-02-02 Dowa Eco-System Co Ltd Method for recovering tantalum

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