NL9101535A - Werkwijze voor het bereiden van wolfraam in poedervorm met behulp van een gefluidiseerd bed. - Google Patents

Werkwijze voor het bereiden van wolfraam in poedervorm met behulp van een gefluidiseerd bed. Download PDF

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Publication number
NL9101535A
NL9101535A NL9101535A NL9101535A NL9101535A NL 9101535 A NL9101535 A NL 9101535A NL 9101535 A NL9101535 A NL 9101535A NL 9101535 A NL9101535 A NL 9101535A NL 9101535 A NL9101535 A NL 9101535A
Authority
NL
Netherlands
Prior art keywords
temperature
tungsten
particles
fluidized bed
particle size
Prior art date
Application number
NL9101535A
Other languages
English (en)
Dutch (nl)
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of NL9101535A publication Critical patent/NL9101535A/nl

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G41/00—Compounds of tungsten
    • C01G41/02—Oxides; Hydroxides
    • 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
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/36—Obtaining tungsten
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
NL9101535A 1990-09-10 1991-09-10 Werkwijze voor het bereiden van wolfraam in poedervorm met behulp van een gefluidiseerd bed. NL9101535A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57950890 1990-09-10
US07/579,508 US5125964A (en) 1990-09-10 1990-09-10 Fluidized bed process for preparing tungsten powder

Publications (1)

Publication Number Publication Date
NL9101535A true NL9101535A (nl) 1992-04-01

Family

ID=24317177

Family Applications (1)

Application Number Title Priority Date Filing Date
NL9101535A NL9101535A (nl) 1990-09-10 1991-09-10 Werkwijze voor het bereiden van wolfraam in poedervorm met behulp van een gefluidiseerd bed.

Country Status (5)

Country Link
US (1) US5125964A (ja)
JP (1) JPH04308011A (ja)
CN (1) CN1059856A (ja)
DE (1) DE4127567A1 (ja)
NL (1) NL9101535A (ja)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT405057B (de) * 1994-09-27 1999-05-25 Voest Alpine Ind Anlagen Verfahren zum reduzieren von oxidhältigem material und anlage zur durchführung des verfahrens
AT403775B (de) * 1995-10-31 1998-05-25 Plansee Ag Verfahren zur reduktion von metallverbindungen
AT404002B (de) * 1996-07-15 1998-07-27 Thule Ind Ab Zusammenklappbarer exzenterspannhebel
AT404912B (de) * 1996-11-04 1999-03-25 Plansee Ag Verfahren zur herstellung von pulver-pressansätzen für feinkörniges hartmetall
CN1057802C (zh) * 1997-04-11 2000-10-25 冯乃祥 熔盐电解制取细钨粉的方法
DE19728490A1 (de) * 1997-07-03 1999-01-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur Rückgewinnung von dotiertem Wolfram
JP4817486B2 (ja) * 2000-09-29 2011-11-16 株式会社東芝 タングステン粉末およびその製造方法ならびにスパッタ・ターゲットおよび切削工具
ATE260995T1 (de) 2000-09-29 2004-03-15 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur wiederverwertung von aus thoriertem wolfram bestehenden gegenständen
KR100468215B1 (ko) * 2002-05-06 2005-01-26 국방과학연구소 산화텅스텐 분말을 이용한 텅스텐 박막 코팅 방법
CN1942999B (zh) * 2004-04-21 2012-04-25 皇家飞利浦电子股份有限公司 一种用于对高压放电灯的不含氧化钍的钨电极的热处理方法
CN100357050C (zh) * 2005-09-12 2007-12-26 北京科技大学 一种工业用透气强排水式纳米钨粉还原炉
US7722722B2 (en) * 2007-11-16 2010-05-25 Brunob Ii B.V. Continuous fluid bed reactor
KR20100131524A (ko) * 2008-04-09 2010-12-15 어플라이드 머티어리얼스, 인코포레이티드 태양전지용의 니트라이드화된 배리어 층
TWI496895B (zh) * 2011-09-20 2015-08-21 Jx Nippon Mining & Metals Corp Recycling method and device for indium or indium alloy
EP3033191A4 (en) * 2013-08-12 2017-05-24 United Technologies Corporation High temperature fluidized bed for powder treatment
CN103526052B (zh) * 2013-10-23 2014-12-03 北京矿冶研究总院 一种从含钨萤石矿中回收钨的方法
CN104944472B (zh) * 2015-06-18 2016-12-07 江西稀有金属钨业控股集团有限公司 一种高流动性氧化钨的制备方法
CN108746657B (zh) * 2018-06-20 2021-07-23 广东翔鹭钨业股份有限公司 一种高圧坯强度钨粉的制备方法
CN110129566A (zh) * 2019-06-27 2019-08-16 赵立夫 一种氢气还原炉蒸汽加湿方法
IL294011A (en) * 2019-12-30 2022-08-01 H C Starck Tungsten Gmbh Process for the production of tungsten metal powders
CN112846210B (zh) * 2020-12-31 2023-08-22 崇义章源钨业股份有限公司 高压坯强度钨粉及其制备方法
CN112846211A (zh) * 2020-12-31 2021-05-28 崇义章源钨业股份有限公司 高压坯强度钨粉及其制备方法
CN113816429B (zh) * 2021-11-12 2023-04-18 江西钨业股份有限公司 仲钨酸铵的颗粒粗化方法
CN114273664A (zh) * 2021-12-28 2022-04-05 株洲硬质合金集团有限公司 一种粒度可控的均质化钨粉的制备方法及氢气露点自动控制系统
CN114850486A (zh) * 2022-04-11 2022-08-05 厦门金鹭特种合金有限公司 一种粒度分布集中的低氧含量亚微细钨粉的制备方法
CN116282172A (zh) * 2023-03-21 2023-06-23 河北师范大学 一种wo2材料及其制备方法和应用

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA547039A (en) * 1957-10-01 John D. Mettler, Jr. Vacuum carbon reduction of tungstic oxide
US2993755A (en) * 1958-08-13 1961-07-25 Union Carbide Corp Preparation of tungstic oxide
US3236634A (en) * 1962-02-12 1966-02-22 Jr Foraker Lambdin Process for production of high surface area tungsten and tungsten trioxide powders
BE644277A (ja) * 1963-02-27
US4402737A (en) * 1982-09-01 1983-09-06 Gte Products Corporation Method of producing tungsten and tungsten carbide powder

Also Published As

Publication number Publication date
CN1059856A (zh) 1992-04-01
JPH04308011A (ja) 1992-10-30
DE4127567A1 (de) 1992-03-12
US5125964A (en) 1992-06-30

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