[go: up one dir, main page]

BR9501781A - Processo para a preparação de concentração de tântalo - Google Patents

Processo para a preparação de concentração de tântalo

Info

Publication number
BR9501781A
BR9501781A BR9501781A BR9501781A BR9501781A BR 9501781 A BR9501781 A BR 9501781A BR 9501781 A BR9501781 A BR 9501781A BR 9501781 A BR9501781 A BR 9501781A BR 9501781 A BR9501781 A BR 9501781A
Authority
BR
Brazil
Prior art keywords
tantalum concentration
preparing tantalum
preparing
concentration
tantalum
Prior art date
Application number
BR9501781A
Other languages
English (en)
Inventor
Joachim Dr Eckert
Kurt Tolle
Jochen Weber
Klaus Dr Rieger
Original Assignee
Starck H C Gmbh Co Kg
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 Co Kg filed Critical Starck H C Gmbh Co Kg
Publication of BR9501781A publication Critical patent/BR9501781A/pt

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
    • C22B34/00—Obtaining refractory metals
    • C22B34/20—Obtaining niobium, tantalum or vanadium
    • C22B34/24—Obtaining niobium or tantalum

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
BR9501781A 1994-04-27 1995-04-25 Processo para a preparação de concentração de tântalo BR9501781A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4414571A DE4414571C1 (de) 1994-04-27 1994-04-27 Verfahren zur Herstellung von Tantal-Niob-Konzentraten

Publications (1)

Publication Number Publication Date
BR9501781A true BR9501781A (pt) 1995-11-21

Family

ID=6516492

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9501781A BR9501781A (pt) 1994-04-27 1995-04-25 Processo para a preparação de concentração de tântalo

Country Status (3)

Country Link
US (1) US5573572A (pt)
BR (1) BR9501781A (pt)
DE (1) DE4414571C1 (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6348113B1 (en) 1998-11-25 2002-02-19 Cabot Corporation High purity tantalum, products containing the same, and methods of making the same
ATE412782T1 (de) 2000-05-22 2008-11-15 Cabot Corp Hochreines niobmetall und erzeugnisse daraus und verfahren zu dessen herstellung
US8333923B2 (en) * 2007-02-28 2012-12-18 Caterpillar Inc. High strength gray cast iron
CN116334415B (zh) * 2023-05-25 2023-08-15 北京科技大学 一种提高贫铌渣品位的方法与设备
CN117802330B (zh) * 2023-12-08 2024-08-16 湖北联球科技有限公司 一种钽铌合金及其冶炼方法与应用

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209427A (en) * 1939-08-03 1940-07-30 Swanson Ziegner Musical instrument for playing bugle calls
US2909427A (en) * 1958-07-22 1959-10-20 Vanadium Corp Of America Process of making ferrocolumbium from columbite ore
US3721727A (en) * 1971-09-09 1973-03-20 Kawecki Berylco Ind Electric furnace method of beneficiating tantalum-and noibium-containing tin slags and the like
DE2733193C2 (de) * 1977-07-22 1986-10-23 Hermann C. Starck Berlin, 1000 Berlin Verfahren zur Gewinnung von Tantal-Niob-Eisenlegierungen aus hochtitanhaltigen Niob-Tantalerzen, -schlacken oder -rückständen mit üblichen Zinngehalten
LU78341A1 (pt) * 1977-10-19 1979-02-02
US5322548A (en) * 1991-06-27 1994-06-21 Teledyne Industries, Inc. Recovery of niobium metal

Also Published As

Publication number Publication date
DE4414571C1 (de) 1996-01-18
US5573572A (en) 1996-11-12

Similar Documents

Publication Publication Date Title
BR9510034A (pt) Processo para preparação de polietileno
BR9607721A (pt) Processo para preparar compostos ciclo-hexapeptídeo
BR9610129A (pt) Processo para preparação de compostos alifáticos fluorados
BR9306629A (pt) Processo para preparar derivados de triaza-ciclo-nonano
BR9509505A (pt) Processo para formar derivados de aluminio-silicato
BR9606782A (pt) Processo para preparar ciclopilacetileno
PT858440E (pt) Processo para a preparacao de 1,1,1,3,3-pentafluoropropano
BR9610583A (pt) Composição detergente líquida concentrada e processo para preparar a mesma
ITMI932443A0 (it) Processo per preparare perfluoropolietri
BR9710099A (pt) Processo para produzir compostos
BR9504782A (pt) Processo para fabricação de filtros
BR9510081A (pt) Processo para preparar um complexo metálicao
BR9500668A (pt) Processo para a preparaçao de compostos polialquil-1-oxa- diazaspirodecano
BR9500613A (pt) Processo para a preparação contínua de mononitrotoluenos
BR9707811A (pt) Processo para preparação de um composto e composto
BR9402855A (pt) Processo para a purificação epsílon-caprolactama
BR9401681A (pt) Processo para preparar um catalisador
BR9611666A (pt) Processo para preparar compostos de 2-clorotiazol
BR9508371A (pt) Processo para preparação de uma cloridrina
PT721453E (pt) Processo para a preparacao den-metil-3-(1-metil-4-piperidinil)-1h-indole-5-etanossulfonamida
PT880498E (pt) Processo para a preparacao de compostos dicetonicos
BR9602619A (pt) Processo para preparação de um composto
PT842930E (pt) Processo para a sintese de benzotiofenos
BR9711131A (pt) Processo para preparar um composto e compostos
BR9501781A (pt) Processo para a preparação de concentração de tântalo

Legal Events

Date Code Title Description
EG Technical examination (opinion): publication of technical examination (opinion)
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 25/04/2015