BR0103789A - Processo de purificação de compostos contendo tântalo - Google Patents

Processo de purificação de compostos contendo tântalo

Info

Publication number
BR0103789A
BR0103789A BR0103789-7A BR0103789A BR0103789A BR 0103789 A BR0103789 A BR 0103789A BR 0103789 A BR0103789 A BR 0103789A BR 0103789 A BR0103789 A BR 0103789A
Authority
BR
Brazil
Prior art keywords
compounds containing
purification process
containing tantalum
purification
compounds
Prior art date
Application number
BR0103789-7A
Other languages
English (en)
Inventor
Raj P Singh
Michael J Miller
Original Assignee
Osram Sylvania Inc
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 Osram Sylvania Inc filed Critical Osram Sylvania Inc
Publication of BR0103789A publication Critical patent/BR0103789A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G35/00—Compounds of tantalum
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C01P2006/82—Compositional purity water content

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

"PROCESSO DE PURIFICAçãO DE COMPOSTOS CONTENDO TâNTALO". Processo de dissolução direta para purificação de óxido de tântalo de amónio hidratado classificação técnica (HATO), (NH~ 4~)~ 2-x~H~ x~Ta~ 2~O~ 6~.nH~ 2~O), e compostos correlatos, tais como, hidróxido de tântalo e óxido de tântalo. O processo preferivelmente utiliza bifluoreto de amónio como fonte de flúor, no lugar do ácido fluorídrico usado nos processos convencionais. Outros compostos fluoreto, tais como, NaF, KF e CaF~ 2~ podem também ser usados.
BR0103789-7A 2000-08-31 2001-08-30 Processo de purificação de compostos contendo tântalo BR0103789A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/652,517 US6383459B1 (en) 2000-08-31 2000-08-31 Method for purifying a tantalum compound using a fluoride compound and sulfuric acid

Publications (1)

Publication Number Publication Date
BR0103789A true BR0103789A (pt) 2002-05-07

Family

ID=24617111

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0103789-7A BR0103789A (pt) 2000-08-31 2001-08-30 Processo de purificação de compostos contendo tântalo

Country Status (5)

Country Link
US (1) US6383459B1 (pt)
CN (1) CN1206380C (pt)
AU (1) AU780618B2 (pt)
BR (1) BR0103789A (pt)
DE (1) DE10142692B4 (pt)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7964085B1 (en) 2002-11-25 2011-06-21 Applied Materials, Inc. Electrochemical removal of tantalum-containing materials
US20060105182A1 (en) * 2004-11-16 2006-05-18 Applied Materials, Inc. Erosion resistant textured chamber surface
US7182925B2 (en) * 2003-04-24 2007-02-27 Osram Sylvania Inc. Tantalum concentrates dissolution and purification method
US7910218B2 (en) * 2003-10-22 2011-03-22 Applied Materials, Inc. Cleaning and refurbishing chamber components having metal coatings
US7579067B2 (en) * 2004-11-24 2009-08-25 Applied Materials, Inc. Process chamber component with layered coating and method
US8617672B2 (en) 2005-07-13 2013-12-31 Applied Materials, Inc. Localized surface annealing of components for substrate processing chambers
US7762114B2 (en) 2005-09-09 2010-07-27 Applied Materials, Inc. Flow-formed chamber component having a textured surface
US7981262B2 (en) * 2007-01-29 2011-07-19 Applied Materials, Inc. Process kit for substrate processing chamber
US7942969B2 (en) 2007-05-30 2011-05-17 Applied Materials, Inc. Substrate cleaning chamber and components
CN101808770A (zh) * 2007-10-15 2010-08-18 高温特殊金属公司 利用回收的废料作为源材料制备钽粉末的方法
CN102583539A (zh) * 2011-01-11 2012-07-18 辽宁石油化工大学 氟钽酸钾的热分解合成方法
CN102336438B (zh) * 2011-06-29 2014-11-12 宁夏东方钽业股份有限公司 利用回收钠还原制备钽粉的副产物制备氟钽酸钾的方法
CN103352117B (zh) * 2013-07-17 2015-01-21 内蒙古科技大学 从低品位含铌矿中提取铌的方法
CN110964928B (zh) * 2019-12-20 2021-09-10 西安瑞鑫科金属材料有限责任公司 一种从含钽物料中溶解钽的方法
CN117020215A (zh) * 2021-12-15 2023-11-10 宁夏东方钽业股份有限公司 采用碱土金属还原氧化钽生产电容器用钽粉的方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1802242A (en) * 1926-05-20 1931-04-21 Intermetal Corp Production of oxy compounds of tantalum and columbium from the ores
US2888320A (en) * 1955-12-21 1959-05-26 Andrew T Mccord Process of extracting and recovering columbium and tantalum values from their ores and products thereof
US3117833A (en) 1958-09-25 1964-01-14 Fansteel Metallurgical Corp Process of purifying and separating columbium and tantalum values from each other
US3653850A (en) * 1969-04-14 1972-04-04 Norton Co Process for purifying tantalum fluoride salts
US3712939A (en) 1971-03-29 1973-01-23 Union Carbide Corp Method for recovering tantalum and/or columbium
JPS56114831A (en) 1980-02-15 1981-09-09 Toshiba Corp Recovery of tantalum from scrap containing tantalum
SU1149572A1 (ru) * 1983-03-02 1986-11-07 Институт Химии И Технологии Редких Элементов Минерального Сырья Кольского Филиала Ан Ссср Им.С.М.Кирова Способ получени фторотанталатов щелочных мателлов
JPS61146717A (ja) 1984-12-18 1986-07-04 Sumitomo Chem Co Ltd タンタルの精製方法
US5635146A (en) 1995-11-30 1997-06-03 Osram Sylvania Inc. Method for the dissolution and purification of tantalum pentoxide
US6010676A (en) 1997-09-12 2000-01-04 Osram Sylvania Inc. Method for making a highly pure tantalum compound

Also Published As

Publication number Publication date
DE10142692B4 (de) 2008-12-18
AU780618B2 (en) 2005-04-07
AU6558301A (en) 2002-03-07
US6383459B1 (en) 2002-05-07
CN1340631A (zh) 2002-03-20
DE10142692A1 (de) 2002-03-14
CN1206380C (zh) 2005-06-15

Similar Documents

Publication Publication Date Title
BR0103789A (pt) Processo de purificação de compostos contendo tântalo
IN2001KO01049A (pt)
EP1176633A3 (en) Surface treatment solution for polysilicon film and method of treating the surface of polysilicon film using the same
CA2203210A1 (en) Manufacture of precipitated calcium carbonate
ATE345375T1 (de) Fluorhaltige tenside für gepufferte säureätzlösungen
MY154434A (en) Polishing composition and polishing method
SE9803659D0 (sv) Treating niobium- and/or tantalum containing raw materials
BR0009038A (pt) Processo para melhorar a qualidade de um óxidode propileno contaminado com poli(õxido depropileno)
BR0112380A (pt) Composições de vidro de lìtio
IT1265089B1 (it) Processo per la produzione di fluoruro di perfluorobutilsolfonile
WO2002075803A3 (en) Ruthenium silicide processing methods
ES2132389T3 (es) Procedimiento para la recuperacion de fluoruro de hidrogeno.
BR9900794A (pt) Processo para recuperação de dióxido de carbbono em uma fermentação de ácido l-glutâmico.
BR0009387A (pt) Processo para produção de soluções de alta pureza sob uso de fluoreto de hidrogênio gasoso
CN1063883A (zh) 发泡聚苯乙烯回收制备涂料的方法
ITMI20012010A0 (it) Sistemi per la conversione di acqua in idrogeno e l'assorbimemnto di idrogeno in dispositivi elettronici e processo di produzione
BR9909974A (pt) Processo para a fluoração de dentes
DE69901036T2 (de) Verfahren zur aufkonzentrierung von verdünnten schwefelsäurelösungen
AU7511300A (en) Regeneration of onium fluoride-hf adducts
ES2167998T3 (es) Procedimiento para la obtencion o recuperacion de acido fluorhidrico y acido nitrico.
BG51716A1 (en) Method for glass ware polishing
HUT74016A (en) Process for producing propargyl-ammonium-chloride derivatives
WO2002055487A3 (fr) Procede d'utilisation de fluorure de carbamoyle comme agent fluorant
RU2000105528A (ru) Способ утилизации и обезвреживания отходов травления титанового производства
CA2208150A1 (en) Manufacture of precipitated calcium carbonate of improved colour

Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements