TW200626261A - Process for the production of valve metal powders - Google Patents

Process for the production of valve metal powders

Info

Publication number
TW200626261A
TW200626261A TW094135039A TW94135039A TW200626261A TW 200626261 A TW200626261 A TW 200626261A TW 094135039 A TW094135039 A TW 094135039A TW 94135039 A TW94135039 A TW 94135039A TW 200626261 A TW200626261 A TW 200626261A
Authority
TW
Taiwan
Prior art keywords
production
valve metal
metal powders
powders
deoxidation
Prior art date
Application number
TW094135039A
Other languages
English (en)
Other versions
TWI408018B (zh
Inventor
Helmut Haas
Ulrich Bartmann
Christoph Schnitter
Elisabeth Droste
Original Assignee
Starck H C Gmbh
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 Starck H C Gmbh filed Critical Starck H C Gmbh
Publication of TW200626261A publication Critical patent/TW200626261A/zh
Application granted granted Critical
Publication of TWI408018B publication Critical patent/TWI408018B/zh

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
    • H01G9/052—Sintered electrodes
    • H01G9/0525—Powder therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1204—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent
    • C22B34/1209—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent by dry processes, e.g. with selective chlorination of iron or with formation of a titanium bearing slag
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/20—Obtaining niobium, tantalum or vanadium
    • C22B34/24—Obtaining niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C22B4/08—Apparatus
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
    • C22B5/14—Dry methods smelting of sulfides or formation of mattes by gases fluidised material
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/18—Reducing step-by-step
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)
TW094135039A 2004-10-08 2005-10-07 製造閥金屬粉末之方法 TWI408018B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004049039A DE102004049039B4 (de) 2004-10-08 2004-10-08 Verfahren zur Herstellung feinteiliger Ventilmetallpulver

Publications (2)

Publication Number Publication Date
TW200626261A true TW200626261A (en) 2006-08-01
TWI408018B TWI408018B (zh) 2013-09-11

Family

ID=35431357

Family Applications (2)

Application Number Title Priority Date Filing Date
TW101142130A TWI523712B (zh) 2004-10-08 2005-10-07 製造閥金屬粉末之方法
TW094135039A TWI408018B (zh) 2004-10-08 2005-10-07 製造閥金屬粉末之方法

Family Applications Before (1)

Application Number Title Priority Date Filing Date
TW101142130A TWI523712B (zh) 2004-10-08 2005-10-07 製造閥金屬粉末之方法

Country Status (16)

Country Link
US (2) US10032564B2 (zh)
EP (2) EP1802412B1 (zh)
JP (3) JP5888830B2 (zh)
KR (1) KR101311146B1 (zh)
CN (2) CN101039769B (zh)
AP (1) AP2027A (zh)
AU (2) AU2005293876B2 (zh)
BR (2) BR122013020400B1 (zh)
DE (1) DE102004049039B4 (zh)
IL (1) IL182221A0 (zh)
MX (1) MX2007003961A (zh)
PT (1) PT1802412E (zh)
RU (1) RU2405659C2 (zh)
TW (2) TWI523712B (zh)
WO (1) WO2006039999A1 (zh)
ZA (1) ZA200702886B (zh)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2450669B (en) * 2006-05-05 2012-03-21 Cabot Corp Tantalam powder and methods of manufacturing same
JP5124578B2 (ja) * 2006-08-16 2013-01-23 ハー．ツェー．スタルク ゲゼルシャフト ミット ベシュレンクテル ハフツング 構造化した焼結活性表面を有する半製品およびその製造方法
NZ547606A (en) * 2006-11-30 2009-04-30 Waikatolink Ltd A method for purification of metal based alloy and intermetallic powders or particles comprising introducing calcium vapour
US7914846B2 (en) * 2008-04-17 2011-03-29 Toyota Motor Engineering & Manufacturing North America, Inc. Method for encapsulating reactive metal hydrides
KR101004778B1 (ko) * 2008-05-21 2011-01-04 순천대학교 산학협력단 산화철 분말의 환원방법 및 이를 적용한 순환 유동층환원장치
CN101574741B (zh) * 2009-06-25 2011-05-18 宁夏东方钽业股份有限公司 电容器用钽粉的制备方法
CN101792857B (zh) * 2010-04-13 2012-11-21 李柏荣 一种从矿物中提炼金属的工艺
JP5697940B2 (ja) * 2010-10-20 2015-04-08 グローバルアドバンストメタルジャパン株式会社 タンタル粉体、その製造方法および脱酸素方法
CN102120258B (zh) * 2011-02-14 2012-12-26 宁夏东方钽业股份有限公司 钽粉的热处理方法
KR101135160B1 (ko) * 2011-11-18 2012-04-16 한국지질자원연구원 저산소 티타늄 분말 제조용 탈산 장치
KR101135159B1 (ko) * 2011-11-18 2012-04-16 한국지질자원연구원 저산소 티타늄 분말 제조 방법
KR101259434B1 (ko) * 2012-07-27 2013-04-30 한국지질자원연구원 티타늄 합금 스크랩으로부터 저산소 합금 분말의 제조 방법
KR102009762B1 (ko) * 2012-11-30 2019-08-12 엘지이노텍 주식회사 탄화규소 분말, 탄화규소 분말의 제조 방법 및 장치
CN102965525B (zh) * 2012-12-05 2013-11-27 江门富祥电子材料有限公司 钽粉镁还原降氧装置及钽粉镁还原降氧方法
CN103084568B (zh) * 2012-12-05 2014-12-03 江门富祥电子材料有限公司 具有冷却器的钽粉镁还原降氧装置及钽粉镁还原降氧方法
WO2014165038A1 (en) * 2013-03-13 2014-10-09 Kemet Electronics Corporation Low energy milling to produce flake powders
US9994929B2 (en) * 2013-03-15 2018-06-12 Ati Properties Llc Processes for producing tantalum alloys and niobium alloys
DE102013206603A1 (de) * 2013-04-12 2014-10-16 H.C. Starck Gmbh Verfahren zur Herstellung von sauerstoffarmen Ventilmetallsinterkörpern mit hoher Oberfläche
KR101364607B1 (ko) * 2013-09-11 2014-02-20 한국지질자원연구원 금속 몰리브덴 분말의 산소 저감에 의한 소결체의 결정립 미세화 방법
CN105014089B (zh) * 2014-04-28 2017-06-06 湖南华威景程材料科技有限公司 一种真空碳还原制备金属铪粉的方法
KR101617351B1 (ko) * 2014-12-19 2016-05-03 한국생산기술연구원 액체금속을 이용한 환원장치
US10074487B2 (en) 2015-05-18 2018-09-11 Avx Corporation Solid electrolytic capacitor having a high capacitance
CN107236868B (zh) 2017-05-23 2019-02-26 东北大学 一种多级深度还原制备高熔点金属粉的方法
US11077497B2 (en) * 2017-06-07 2021-08-03 Global Titanium Inc. Deoxidation of metal powders
KR20190076733A (ko) * 2017-12-22 2019-07-02 주식회사 포스코 티타늄 합금 분말의 유동식 탈산 장치
MX2020009146A (es) 2018-03-05 2020-09-28 Global Advanced Metals Usa Inc Anodos que contienen polvo esferico y capacitores.
KR102355131B1 (ko) * 2018-03-23 2022-01-25 충남대학교산학협력단 수소화물 매개 금속 열 환원 공정에 의한 금속 나노분말 제조 방법
KR102128736B1 (ko) * 2018-07-12 2020-07-01 전북대학교산학협력단 저산소 벌크 티타늄 또는 티타늄 합금의 제조방법, 및 이에 의해 제조된 저산소 벌크 티타늄 또는 티타늄 합금
JP2022152802A (ja) * 2021-03-29 2022-10-12 パナソニックＩｐマネジメント株式会社 電解コンデンサおよびその製造方法
CN115570127B (zh) * 2022-10-11 2023-07-21 江门富祥电子材料有限公司 一种钽粉的制备方法

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140248C2 (de) * 1981-10-09 1986-06-19 Hermann C. Starck Berlin, 1000 Berlin Verwendung von dotiertem Ventilmetallpulver für die Herstellung von Elektrolytkondensatoranoden
DE3330455A1 (de) * 1983-08-24 1985-03-14 GfE Gesellschaft für Elektrometallurgie mbH, 4000 Düsseldorf Verfahren zur herstellung von ventilmetallpulver fuer elektrolytkondensatoren und dergleichen
US4722756A (en) * 1987-02-27 1988-02-02 Cabot Corp Method for deoxidizing tantalum material
US5242481A (en) * 1989-06-26 1993-09-07 Cabot Corporation Method of making powders and products of tantalum and niobium
CN1023548C (zh) * 1989-11-20 1994-01-19 宁夏有色金属冶炼厂 电容器级钽粉的生产方法
JPH0897096A (ja) * 1994-09-28 1996-04-12 Sutaruku Buitetsuku Kk タンタル粉末及びそれを用いた電解コンデンサ
US6051326A (en) * 1997-04-26 2000-04-18 Cabot Corporation Valve metal compositions and method
WO2000067936A1 (en) 1998-05-06 2000-11-16 H.C. Starck, Inc. Metal powders produced by the reduction of the oxides with gaseous magnesium
RU2230629C2 (ru) * 1998-05-06 2004-06-20 Х.Ц. Штарк, Инк. Металлические порошки, полученные восстановлением оксидов газообразным магнием
US6171363B1 (en) * 1998-05-06 2001-01-09 H. C. Starck, Inc. Method for producing tantallum/niobium metal powders by the reduction of their oxides with gaseous magnesium
DE69940030D1 (de) * 1998-05-06 2009-01-15 Starck H C Inc VERFAHREN ZUR HERSTELLUNG VON METALLPULVERN DURCH REDUKTION VON OXIDEN, Nb UND Nb-Ta PULVER UND DAMIT HERGESTELLTE KONDENSATORANODE
US6322912B1 (en) * 1998-09-16 2001-11-27 Cabot Corporation Electrolytic capacitor anode of valve metal oxide
DE19847012A1 (de) * 1998-10-13 2000-04-20 Starck H C Gmbh Co Kg Niobpulver und Verfahren zu dessen Herstellung
JP3871824B2 (ja) * 1999-02-03 2007-01-24 キャボットスーパーメタル株式会社 高容量コンデンサー用タンタル粉末
US6558447B1 (en) * 1999-05-05 2003-05-06 H.C. Starck, Inc. Metal powders produced by the reduction of the oxides with gaseous magnesium
JP3641190B2 (ja) * 2000-05-18 2005-04-20 三井金属鉱業株式会社 タンタル／ニオブ含有原料の処理方法
JP4828016B2 (ja) 2000-08-09 2011-11-30 キャボットスーパーメタル株式会社 タンタル粉末の製法、タンタル粉末およびタンタル電解コンデンサ
JP2002060803A (ja) * 2000-08-10 2002-02-28 Showa Kyabotto Super Metal Kk 電解コンデンサ用タンタル焼結体の製造方法
JP2002134360A (ja) * 2000-10-24 2002-05-10 Matsushita Electric Ind Co Ltd 固体電解コンデンサおよびその製造方法
MXPA03010043A (es) * 2001-05-04 2004-12-06 Starck H C Inc Reduccion metalotermica de oxidos metalicos refractarios.
JP2003013115A (ja) 2001-06-28 2003-01-15 Sumitomo Metal Mining Co Ltd ニオブ及び／又はタンタル粉末の製造方法
US6478845B1 (en) * 2001-07-09 2002-11-12 Osram Sylvania Inc. Boron addition for making potassium-doped tungsten
CN1169643C (zh) * 2001-09-29 2004-10-06 宁夏东方钽业股份有限公司 高比表面积钽粉和/或铌粉的制备方法
JP3610942B2 (ja) * 2001-10-12 2005-01-19 住友金属鉱山株式会社 ニオブおよび／またはタンタルの粉末の製造法
JP2003213309A (ja) * 2002-01-18 2003-07-30 Japan Metals & Chem Co Ltd 多孔質金属ニオブ粉末の製造方法及び多孔質金属ニオブ粉末
DE10307716B4 (de) * 2002-03-12 2021-11-18 Taniobis Gmbh Ventilmetall-Pulver und Verfahren zu deren Herstellung
JP2007511667A (ja) * 2003-06-10 2007-05-10 キャボット　コーポレイション タンタル粉末およびその製造方法
DE102004020052B4 (de) * 2004-04-23 2008-03-06 H.C. Starck Gmbh Verfahren zur Herstellung von Niob- und Tantalpulver

Also Published As

Publication number Publication date
BRPI0518166A (pt) 2008-11-04
RU2405659C2 (ru) 2010-12-10
WO2006039999A1 (de) 2006-04-20
AU2010219327B2 (en) 2013-03-28
CN102294472B (zh) 2015-09-30
KR20070051957A (ko) 2007-05-18
PT1802412E (pt) 2014-02-11
JP2017150081A (ja) 2017-08-31
EP1802412B1 (de) 2013-11-13
RU2007116852A (ru) 2008-11-20
AP2027A (en) 2009-08-13
BRPI0518166B1 (pt) 2013-11-26
US20090214378A1 (en) 2009-08-27
AU2005293876B2 (en) 2010-09-30
BR122013020400B1 (pt) 2018-04-03
CN101039769B (zh) 2013-04-17
DE102004049039B4 (de) 2009-05-07
TWI408018B (zh) 2013-09-11
AU2010219327C1 (en) 2013-09-19
EP1802412A1 (de) 2007-07-04
TW201306972A (zh) 2013-02-16
JP2008516082A (ja) 2008-05-15
JP2014111840A (ja) 2014-06-19
AU2005293876A1 (en) 2006-04-20
EP2292355B1 (de) 2018-08-22
ZA200702886B (en) 2008-09-25
DE102004049039A1 (de) 2006-04-20
IL182221A0 (en) 2007-09-20
JP6147200B2 (ja) 2017-06-14
CN102294472A (zh) 2011-12-28
AU2010219327A1 (en) 2010-09-30
EP2292355A1 (de) 2011-03-09
US20180308641A1 (en) 2018-10-25
MX2007003961A (es) 2008-03-13
US10032564B2 (en) 2018-07-24
TWI523712B (zh) 2016-03-01
JP5888830B2 (ja) 2016-03-22
CN101039769A (zh) 2007-09-19
AP2007003964A0 (en) 2007-04-30
KR101311146B1 (ko) 2013-09-24

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