RU2007112796A - RESTORATION OF VALVE METAL POWDERS - Google Patents

RESTORATION OF VALVE METAL POWDERS Download PDF

Info

Publication number
RU2007112796A
RU2007112796A RU2007112796/02A RU2007112796A RU2007112796A RU 2007112796 A RU2007112796 A RU 2007112796A RU 2007112796/02 A RU2007112796/02 A RU 2007112796/02A RU 2007112796 A RU2007112796 A RU 2007112796A RU 2007112796 A RU2007112796 A RU 2007112796A
Authority
RU
Russia
Prior art keywords
valve metal
powder
metal powder
lanthanum
reducing agent
Prior art date
Application number
RU2007112796/02A
Other languages
Russian (ru)
Other versions
RU2404881C2 (en
Inventor
Йосуа ЛЕФФЕЛЬХОЛЬЦ (DE)
Йосуа ЛЕФФЕЛЬХОЛЬЦ
Ульрих БАРТМАНН (DE)
Ульрих БАРТМАНН
Original Assignee
Х.К. Штарк ГмбХ унд Ко. КГ (DE)
Х.К. Штарк Гмбх унд Ко. КГ
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 Х.К. Штарк ГмбХ унд Ко. КГ (DE), Х.К. Штарк Гмбх унд Ко. КГ filed Critical Х.К. Штарк ГмбХ унд Ко. КГ (DE)
Publication of RU2007112796A publication Critical patent/RU2007112796A/en
Application granted granted Critical
Publication of RU2404881C2 publication Critical patent/RU2404881C2/en

Links

Classifications

    • 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
    • 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
    • C22B34/20—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
    • 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
    • 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
    • H01G9/15—Solid electrolytic capacitors

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (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)

Claims (10)

1. Способ восстановления порошков клапанных металлов, отличающийся тем, что в качестве восстанавливающего средства используют кальций, барий, лантан, иттрий или церий.1. A method of recovering valve metal powders, characterized in that calcium, barium, lanthanum, yttrium or cerium are used as a reducing agent. 2. Способ по п.1, отличающийся тем, что порошки клапанных металлов представляют собой порошок ниобия, порошок тантала или порошок сплава ниобия и тантала.2. The method according to claim 1, characterized in that the valve metal powders are niobium powder, tantalum powder or a powder of an alloy of niobium and tantalum. 3. Способ по п.1, отличающийся тем, что в качестве восстанавливающего средства используют кальций или лантан.3. The method according to claim 1, characterized in that as a reducing agent use calcium or lanthanum. 4. Способ по п.1, отличающийся тем, что в качестве восстанавливающего средства используют кальций и восстановление осуществляют при температуре 880-1050°С.4. The method according to claim 1, characterized in that calcium is used as the reducing agent and the reduction is carried out at a temperature of 880-1050 ° C. 5. Способ по п.1, отличающийся тем, что в качестве восстанавливающего средства используют лантан и восстановление осуществляют при температуре 940-1150°С.5. The method according to claim 1, characterized in that lanthanum is used as a reducing agent and the reduction is carried out at a temperature of 940-1150 ° C. 6. Способ по п.1, отличающийся тем, что восстановление осуществляют в две стадии.6. The method according to claim 1, characterized in that the restoration is carried out in two stages. 7. Способ по одному из пп.1-6, отличающийся тем, что восстанавливают порошок клапанного металла, который получен при восстановлении. оксида клапанного металла парообразным кальцием, барием, лантаном, иттрием или церием.7. The method according to one of claims 1 to 6, characterized in that the valve metal powder that is obtained by reduction is reduced. valve metal oxide by vaporous calcium, barium, lanthanum, yttrium or cerium. 8. Порошок клапанного металла, отличающийся тем, что отношение суммы примесей натрия, калия и магния к удельной электрической емкости порошка клапанного металла составляет менее 3 млн долей/10000 мкФВ/г.8. Valve metal powder, characterized in that the ratio of the sum of the impurities of sodium, potassium and magnesium to the specific electric capacity of the valve metal powder is less than 3 million fractions / 10000 μFV / g. 9. Порошок клапанного металла по п.8, отличающийся тем, что отношение суммы примесей натрия, калия и магния к удельной электрической емкости порошка клапанного металла составляет менее 1 млн доли/10000 мкФВ/г.9. Valve metal powder according to claim 8, characterized in that the ratio of the sum of the impurities of sodium, potassium and magnesium to the specific electric capacity of the valve metal powder is less than 1 million fractions / 10000 μFV / g. 10. Порошок клапанного металла по п.8 или 9, отличающийся тем, что представляет собой ниобиевый или танталовый порошок.10. Valve metal powder according to claim 8 or 9, characterized in that it is a niobium or tantalum powder.
RU2007112796/02A 2004-09-08 2005-08-26 Reclamation of barrier metal powders RU2404881C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004043343.7 2004-09-08
DE102004043343A DE102004043343A1 (en) 2004-09-08 2004-09-08 Deoxidation of valve metal powders

Related Child Applications (1)

Application Number Title Priority Date Filing Date
RU2010116085/02A Division RU2010116085A (en) 2004-09-08 2010-04-23 POWDER VENTAL METAL

Publications (2)

Publication Number Publication Date
RU2007112796A true RU2007112796A (en) 2008-10-20
RU2404881C2 RU2404881C2 (en) 2010-11-27

Family

ID=35445804

Family Applications (2)

Application Number Title Priority Date Filing Date
RU2007112796/02A RU2404881C2 (en) 2004-09-08 2005-08-26 Reclamation of barrier metal powders
RU2010116085/02A RU2010116085A (en) 2004-09-08 2010-04-23 POWDER VENTAL METAL

Family Applications After (1)

Application Number Title Priority Date Filing Date
RU2010116085/02A RU2010116085A (en) 2004-09-08 2010-04-23 POWDER VENTAL METAL

Country Status (15)

Country Link
US (1) US20080011124A1 (en)
EP (1) EP1793950A2 (en)
JP (1) JP2008512568A (en)
KR (1) KR20070098988A (en)
CN (1) CN101052488A (en)
AU (1) AU2005281918A1 (en)
BR (1) BRPI0515172A (en)
DE (1) DE102004043343A1 (en)
IL (1) IL181782A0 (en)
MX (1) MX2007002717A (en)
RU (2) RU2404881C2 (en)
SV (1) SV2006002222A (en)
TW (1) TW200624200A (en)
WO (1) WO2006027119A2 (en)
ZA (1) ZA200701902B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101574741B (en) * 2009-06-25 2011-05-18 宁夏东方钽业股份有限公司 Preparation method of tantalum powder for capacitor
EP3112059B1 (en) * 2014-02-27 2020-01-15 Ningxia Orient Tantalum Industry Co., Ltd. Preparation of high-purity tantalum powder
FR3038623B1 (en) * 2015-07-10 2017-06-30 Fives PROCESS FOR REMOVING OXIDES PRESENT AT THE SURFACE OF NODULES OF A METAL POWDER BEFORE USING THE SAME IN AN INDUSTRIAL PROCESS
CN107236868B (en) 2017-05-23 2019-02-26 东北大学 A kind of method of multistage drastic reduction preparation high-melting metal powder
CN112828279B (en) * 2020-12-31 2022-08-12 昆明理工大学 Metal powder gas phase deoxidation method

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL252366A (en) * 1958-06-13
US4141720A (en) * 1978-05-16 1979-02-27 Nrc, Inc. Tantalum powder reclaiming
WO1986007097A1 (en) * 1985-05-27 1986-12-04 The University Of Melbourne Metal halide reduction with molten sodium/potassium alloy
US4722756A (en) * 1987-02-27 1988-02-02 Cabot Corp Method for deoxidizing tantalum material
US5022935A (en) * 1988-09-23 1991-06-11 Rmi Titanium Company Deoxidation of a refractory metal
US4923531A (en) * 1988-09-23 1990-05-08 Rmi Company Deoxidation of titanium and similar metals using a deoxidant in a molten metal carrier
AU7979391A (en) * 1990-05-17 1991-12-10 Cabot Corporation Method of producing high surface area low metal impurity tantalum powder
US5448447A (en) * 1993-04-26 1995-09-05 Cabot Corporation Process for making an improved tantalum powder and high capacitance low leakage electrode made therefrom
US5442978A (en) * 1994-05-19 1995-08-22 H. C. Starck, Inc. Tantalum production via a reduction of K2TAF7, with diluent salt, with reducing agent provided in a fast series of slug additions
US5993513A (en) * 1996-04-05 1999-11-30 Cabot Corporation Method for controlling the oxygen content in valve metal materials
US6051326A (en) * 1997-04-26 2000-04-18 Cabot Corporation Valve metal compositions and method
DE19847012A1 (en) * 1998-10-13 2000-04-20 Starck H C Gmbh Co Kg Niobium powder and process for its manufacture
US6558447B1 (en) * 1999-05-05 2003-05-06 H.C. Starck, Inc. Metal powders produced by the reduction of the oxides with gaseous magnesium
DE19953946A1 (en) * 1999-11-09 2001-05-10 Starck H C Gmbh Co Kg Capacitor powder
DE10030387A1 (en) * 2000-06-21 2002-01-03 Starck H C Gmbh Co Kg capacitor powder
US20030104923A1 (en) * 2001-05-15 2003-06-05 Showa Denko K.K. Niobium oxide powder, niobium oxide sintered body and capacitor using the sintered body
CN1169643C (en) * 2001-09-29 2004-10-06 宁夏东方钽业股份有限公司 Preparation method of high specific surface area tantalum powder and/or niobium powder
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
DE10307716B4 (en) * 2002-03-12 2021-11-18 Taniobis Gmbh Valve metal powders and processes for their manufacture
US6802884B2 (en) * 2002-05-21 2004-10-12 H.C. Starck, Inc. Tantalum-silicon and niobium-silicon substrates for capacitor anodes
BR0204587A (en) * 2002-11-04 2004-06-29 Cbmm Sa High Surface Area Niobium and / or Tantalum Powder Production Process

Also Published As

Publication number Publication date
IL181782A0 (en) 2007-07-04
AU2005281918A1 (en) 2006-03-16
KR20070098988A (en) 2007-10-08
US20080011124A1 (en) 2008-01-17
MX2007002717A (en) 2008-03-11
EP1793950A2 (en) 2007-06-13
SV2006002222A (en) 2006-05-25
TW200624200A (en) 2006-07-16
ZA200701902B (en) 2008-08-27
WO2006027119A2 (en) 2006-03-16
RU2404881C2 (en) 2010-11-27
JP2008512568A (en) 2008-04-24
DE102004043343A1 (en) 2006-03-23
BRPI0515172A (en) 2008-07-08
CN101052488A (en) 2007-10-10
RU2010116085A (en) 2011-10-27
WO2006027119A3 (en) 2006-06-15

Similar Documents

Publication Publication Date Title
RU2007112796A (en) RESTORATION OF VALVE METAL POWDERS
JP2002517377A5 (en)
JP2008516082A5 (en)
WO2008124343A3 (en) Variably porous structures
RU2007115738A (en) REMOVAL OF MAGNESIUM FROM POWDERS OF METALS RESTORED BY MAGNESIUM
JP2008536535A5 (en)
JP2020500266A5 (en)
WO2004024965A3 (en) Getter compositions reactivatable at low temperature after exposure to reactive gases at higher temperature
UA89208C2 (en) Compositions for mercury dispensing and devices based thereon
Ye et al. Martensitic transformation of Ti-18Nb (at.%) alloy with zirconium
RU2006119817A (en) INTEGRATED SYNTHETIC EASY FUSION FLUX FOR BLACK METALLURGY
RU2007123870A (en) NANOCHEMICAL METHOD FOR PRODUCING COMPOSITE MATERIALS AND PROTECTIVE COATINGS ON ALUMINUM AND ITS ALLOYS
Sobolev et al. THERMODYNAMIC ESTIMATION OF MGO DISSOLUTION IN SLAGS OF STEELMAKING
RU2001110526A (en) Modifier for steel
EP1722404A3 (en) Low work function metal alloy
Wang et al. La 2 O 3-Gd 2 O 3-Mo secondary emission material.
RU2014110911A (en) HIGH STRENGTH CASTING WELDABLE ALUMINUM ALLOY
DE50302125D1 (en) STEEL ALLOY
Duan et al. Application of centrifugal extractor in non-ferrous metallurgy.
Velu et al. Calciothermic reduction of neodymium fluoride
Senboshi et al. Making of fine Nb-Ti alloy powder by use of hydriding-low temperature milling-dehydriding treatments
Dou et al. Effect of Ti/Cr ratio on Ab/De sorption performance of xTi-18 Mn-(50-x) Cr-32 V alloys.
Fray Interaction of Materials Science with Extractive Metallurgy
魏晓伟 et al. Negative creep during compressive creep of as—cast ZA27 alloy
Reznichenko Metallothermic preparation of Ti

Legal Events

Date Code Title Description
MM4A The patent is invalid due to non-payment of fees

Effective date: 20100827