GB2409466A - A process for the production of niobium and/or tantalum powder with large surface area - Google Patents

A process for the production of niobium and/or tantalum powder with large surface area Download PDF

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Publication number
GB2409466A
GB2409466A GB0508844A GB0508844A GB2409466A GB 2409466 A GB2409466 A GB 2409466A GB 0508844 A GB0508844 A GB 0508844A GB 0508844 A GB0508844 A GB 0508844A GB 2409466 A GB2409466 A GB 2409466A
Authority
GB
United Kingdom
Prior art keywords
niobium
tantalum
surface area
production
adequate
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.)
Granted
Application number
GB0508844A
Other versions
GB2409466B (en
GB0508844D0 (en
Inventor
Solon Yasuhiko Tagusagawa
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.)
CBMM SA
Companhia Brasileira de Metalurgia e Mineracao
Original Assignee
CBMM SA
Companhia Brasileira de Metalurgia e Mineracao
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 CBMM SA, Companhia Brasileira de Metalurgia e Mineracao filed Critical CBMM SA
Publication of GB0508844D0 publication Critical patent/GB0508844D0/en
Publication of GB2409466A publication Critical patent/GB2409466A/en
Application granted granted Critical
Publication of GB2409466B publication Critical patent/GB2409466B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
    • 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
    • C22B34/1263—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 obtaining metallic titanium from titanium compounds, e.g. by reduction
    • C22B34/1268—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 obtaining metallic titanium from titanium compounds, e.g. by reduction using alkali or alkaline-earth metals or amalgams
    • 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
    • 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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
    • 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
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Powder Metallurgy (AREA)

Abstract

The present invention refers to a process for production of a powder of niobium and/or tantalum having high purity, large specific surface area, controlled contents of oxygen and nitrogen, and a morphology that is adequate for use in the manufacture of capacitors, characterized by including one sole step of reduction of a controlled layer of niobium and/or tantalum oxide (NbxOy, and/or TaxOy, where x =1 to 2 and y = 1 to 5) deliberately formed over particles of metallic niobium and/or tantalum and/or hydrides thereof of adequate purity, by alkali metals or earth alkali metals and/or hydrides thereof in a bath of molten salts followed by a step of dissolution of the salt in an aqueous solution for recovery of the niobium and/or tantalum powder. These particles produced using the said process have a small size, large surface area and a sponge-like morphology, being thereby adequate for the production of capacitors.

Description

GB 2409466 A continuation (74) Agent and/or Address for Service: Page
White & Farrer 54 Doughty Street, LONDON, WC1N 2LS, United Kingdom
GB0508844A 2002-11-04 2003-08-27 A process for the production of niobium and/or tantalum powder with large surface area Expired - Lifetime GB2409466B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR0204587-7A BR0204587A (en) 2002-11-04 2002-11-04 High Surface Area Niobium and / or Tantalum Powder Production Process
PCT/BR2003/000122 WO2004042095A1 (en) 2002-11-04 2003-08-27 A process for the production of niobium and/or tantalum powder with large surface area

Publications (3)

Publication Number Publication Date
GB0508844D0 GB0508844D0 (en) 2005-06-08
GB2409466A true GB2409466A (en) 2005-06-29
GB2409466B GB2409466B (en) 2006-06-21

Family

ID=32303987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0508844A Expired - Lifetime GB2409466B (en) 2002-11-04 2003-08-27 A process for the production of niobium and/or tantalum powder with large surface area

Country Status (8)

Country Link
US (1) US20060096418A1 (en)
JP (1) JP2006516039A (en)
CN (1) CN1694973A (en)
AU (1) AU2003254646A1 (en)
BR (1) BR0204587A (en)
DE (1) DE10393407T5 (en)
GB (1) GB2409466B (en)
WO (1) WO2004042095A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108217596A (en) * 2018-01-29 2018-06-29 吉林大学 Niobium hydride and the method for tantalum hydride are prepared using non-hydrogen source solwution method

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3610942B2 (en) * 2001-10-12 2005-01-19 住友金属鉱山株式会社 Method for producing niobium and / or tantalum powder
BR0304252B1 (en) * 2003-09-25 2013-05-14 production process of niobium monoxide powder, niobium monoxide, and capacitor.
US20080011124A1 (en) * 2004-09-08 2008-01-17 H.C. Starck Gmbh & Co. Kg Deoxidation of Valve Metal Powders
US7399335B2 (en) 2005-03-22 2008-07-15 H.C. Starck Inc. Method of preparing primary refractory metal
DK2054901T3 (en) * 2006-08-16 2020-01-20 H C Starck Tantalum And Niobium Gmbh SEMI-FINISHED PRODUCTS WITH A STRUCTURED SINTERACTIVE SURFACE AND PROCEDURE FOR MANUFACTURING THESE
GB0902486D0 (en) * 2009-02-13 2009-04-01 Metalysis Ltd A method for producing metal powders
WO2012158592A2 (en) * 2011-05-16 2012-11-22 Boston Electronic Materials, Llc Manufacturing and applications of metal powders and alloys
GB201218675D0 (en) * 2012-10-17 2012-11-28 Univ Bradford Improved method for metal production
KR101911871B1 (en) * 2016-12-23 2018-10-29 한국기초과학지원연구원 Method for Manufacturing Tantalum powder
KR102359159B1 (en) * 2019-12-30 2022-02-08 충남대학교산학협력단 Method for producing metal nanoparticles by combustion process
CN113500204A (en) * 2021-07-08 2021-10-15 安徽理工大学 Method for preparing fine niobium powder by thermal reduction of niobium chloride through calcium in calcium chloride molten salt

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4487677A (en) * 1983-04-11 1984-12-11 Metals Production Research, Inc. Electrolytic recovery system for obtaining titanium metal from its ore
US4923531A (en) * 1988-09-23 1990-05-08 Rmi Company Deoxidation of titanium and similar metals using a deoxidant in a molten metal carrier
GB2233349A (en) * 1989-06-26 1991-01-09 Cabot Corp Powders and products of tantalum, niobium and their alloys
US5234491A (en) * 1990-05-17 1993-08-10 Cabot Corporation Method of producing high surface area, low metal impurity
US6136062A (en) * 1998-10-13 2000-10-24 H. C. Starck Gmbh & Co. Kg Niobium powder and a process for the production of niobium and/or tantalum powders
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
WO2001059166A1 (en) * 2000-02-08 2001-08-16 Cabot Super Metals K.K. Production of nitrogen-containing tantalum or niobium powder and solid electrolytic capacitor

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1728941A (en) 1927-02-19 1929-09-24 Westinghouse Lamp Co Production of rare metals
US2516863A (en) 1946-07-15 1950-08-01 Gardner Daniel Process of producing tantalum, columbium, and compounds thereof
US4687632A (en) 1984-05-11 1987-08-18 Hurd Frank W Metal or alloy forming reduction process and apparatus
FR2595101A1 (en) 1986-02-28 1987-09-04 Rhone Poulenc Chimie PROCESS FOR THE PREPARATION BY LITHIOTHERMIA OF METAL POWDERS
US4684399A (en) 1986-03-04 1987-08-04 Cabot Corporation Tantalum powder process
DE19831280A1 (en) 1998-07-13 2000-01-20 Starck H C Gmbh Co Kg Acidic earth metal, specifically tantalum or niobium, powder for use, e.g., in capacitor production is produced by two-stage reduction of the pentoxide using hydrogen as the first stage reducing agent for initial suboxide formation
US6416730B1 (en) 1998-09-16 2002-07-09 Cabot Corporation Methods to partially reduce a niobium metal oxide oxygen reduced niobium oxides
JP2001143970A (en) * 1999-11-16 2001-05-25 Showa Kyabotto Super Metal Kk Tantalum powder, manufacturing method thereof, porous sintered body, and solid electrolytic capacitor
US6563695B1 (en) * 1999-11-16 2003-05-13 Cabot Supermetals K.K. Powdered tantalum, niobium, production process thereof, and porous sintered body and solid electrolytic capacitor using the powdered tantalum or niobium
US6835225B2 (en) 2000-04-21 2004-12-28 Showa Denko K.K. Niobium sintered body, production method therefor, and capacitor using the same
JP2004052003A (en) * 2002-07-16 2004-02-19 Cabot Supermetal Kk Method and apparatus for producing niobium powder or tantalum powder

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4487677A (en) * 1983-04-11 1984-12-11 Metals Production Research, Inc. Electrolytic recovery system for obtaining titanium metal from its ore
US4923531A (en) * 1988-09-23 1990-05-08 Rmi Company Deoxidation of titanium and similar metals using a deoxidant in a molten metal carrier
GB2233349A (en) * 1989-06-26 1991-01-09 Cabot Corp Powders and products of tantalum, niobium and their alloys
US5234491A (en) * 1990-05-17 1993-08-10 Cabot Corporation Method of producing high surface area, low metal impurity
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
US6136062A (en) * 1998-10-13 2000-10-24 H. C. Starck Gmbh & Co. Kg Niobium powder and a process for the production of niobium and/or tantalum powders
WO2001059166A1 (en) * 2000-02-08 2001-08-16 Cabot Super Metals K.K. Production of nitrogen-containing tantalum or niobium powder and solid electrolytic capacitor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108217596A (en) * 2018-01-29 2018-06-29 吉林大学 Niobium hydride and the method for tantalum hydride are prepared using non-hydrogen source solwution method

Also Published As

Publication number Publication date
GB2409466B (en) 2006-06-21
GB0508844D0 (en) 2005-06-08
US20060096418A1 (en) 2006-05-11
DE10393407T5 (en) 2005-10-06
JP2006516039A (en) 2006-06-15
BR0204587A (en) 2004-06-29
WO2004042095A1 (en) 2004-05-21
AU2003254646A1 (en) 2004-06-07
CN1694973A (en) 2005-11-09

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20230826