GB767038A - Improvements in or relating to extraction of niobium - Google Patents

Improvements in or relating to extraction of niobium

Info

Publication number
GB767038A
GB767038A GB1434154A GB1434154A GB767038A GB 767038 A GB767038 A GB 767038A GB 1434154 A GB1434154 A GB 1434154A GB 1434154 A GB1434154 A GB 1434154A GB 767038 A GB767038 A GB 767038A
Authority
GB
United Kingdom
Prior art keywords
acid
tributyl phosphate
niobium
solution
iom
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.)
Expired
Application number
GB1434154A
Inventor
John Molyneux Fletcher
Donald Frank Charles Morris
Arthur Gregory Wain
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB1434154A priority Critical patent/GB767038A/en
Publication of GB767038A publication Critical patent/GB767038A/en
Expired legal-status Critical Current

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

Abstract

Niobium is extracted from hydrofluoricnitric or hydrofluoric-sulphuric acid solutions of the starting material, e.g. ferroniobium, by washing the solution with tributyl phosphate, and subsequently back-washing the tributyl phosphate with water or a gaseous hydrofluoric acid. Preferred acid concentrations are IOM HF/4M HNO3 and IOM HF/6MH2SO4, the former being preferred for continuous extraction. After backwashing the tributyl phosphate the niobium may be precipitated as niobic acid by passing ammonia into the aqueous back-wash. The niobic acid may be dissolved in a mixture of potassium fluoride and hydrofluonic acid and potassium fluoniobiate; K2NbOF5.H2O crystallized out. If 0.5M HF solution is used to backwash, tantalum, which is extracted from the initial acid solution by the tributyl phosphate, is not washed out therefrom.
GB1434154A 1954-05-17 1954-05-17 Improvements in or relating to extraction of niobium Expired GB767038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1434154A GB767038A (en) 1954-05-17 1954-05-17 Improvements in or relating to extraction of niobium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1434154A GB767038A (en) 1954-05-17 1954-05-17 Improvements in or relating to extraction of niobium

Publications (1)

Publication Number Publication Date
GB767038A true GB767038A (en) 1957-01-30

Family

ID=10039442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1434154A Expired GB767038A (en) 1954-05-17 1954-05-17 Improvements in or relating to extraction of niobium

Country Status (1)

Country Link
GB (1) GB767038A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962372A (en) * 1958-01-17 1960-11-29 Union Carbide Corp Columbium and tantalum separation
DE3249354A1 (en) * 1982-11-12 1984-05-17 GfE Gesellschaft für Elektrometallurgie mbH, 4000 Düsseldorf Process for the preparation of a niobium solution for the preparation of high-purity niobium oxide
DE3249356A1 (en) * 1982-11-12 1984-05-17 GfE Gesellschaft für Elektrometallurgie mbH, 4000 Düsseldorf Process for the preparation of a tantalum solution for the preparation of high-purity tantalum oxide
DE3241832A1 (en) * 1982-11-12 1984-05-17 GfE Gesellschaft für Elektrometallurgie mbH, 4000 Düsseldorf Use of a solution of TOPO for the separation and production of tantalum and niobium oxides of high purity
WO1990002823A1 (en) * 1988-09-06 1990-03-22 Institut National De Recherche Chimique Appliquee IMPROVED PROCESS FOR OBTAINING IMPURITY-FREE COMPOUNDS OF Ta AND/OR Nb FROM MATERIALS CONTAINING THESE METALS

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962372A (en) * 1958-01-17 1960-11-29 Union Carbide Corp Columbium and tantalum separation
DE3249354A1 (en) * 1982-11-12 1984-05-17 GfE Gesellschaft für Elektrometallurgie mbH, 4000 Düsseldorf Process for the preparation of a niobium solution for the preparation of high-purity niobium oxide
DE3249356A1 (en) * 1982-11-12 1984-05-17 GfE Gesellschaft für Elektrometallurgie mbH, 4000 Düsseldorf Process for the preparation of a tantalum solution for the preparation of high-purity tantalum oxide
DE3241832A1 (en) * 1982-11-12 1984-05-17 GfE Gesellschaft für Elektrometallurgie mbH, 4000 Düsseldorf Use of a solution of TOPO for the separation and production of tantalum and niobium oxides of high purity
WO1990002823A1 (en) * 1988-09-06 1990-03-22 Institut National De Recherche Chimique Appliquee IMPROVED PROCESS FOR OBTAINING IMPURITY-FREE COMPOUNDS OF Ta AND/OR Nb FROM MATERIALS CONTAINING THESE METALS
FR2636939A1 (en) * 1988-09-06 1990-03-30 Inst Nat Rech Chimique IMPROVED PROCESS FOR OBTAINING TA AND / OR NB COMPOUNDS FREE OF IMPURITIES FROM MATERIALS CONTAINING THESE METALS

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