GB791121A - Improvements in or relating to the production of niobium - Google Patents
Improvements in or relating to the production of niobiumInfo
- Publication number
- GB791121A GB791121A GB3338654A GB3338654A GB791121A GB 791121 A GB791121 A GB 791121A GB 3338654 A GB3338654 A GB 3338654A GB 3338654 A GB3338654 A GB 3338654A GB 791121 A GB791121 A GB 791121A
- Authority
- GB
- United Kingdom
- Prior art keywords
- niobium
- sodium
- reaction
- crucible
- temperature
- 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
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)
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
791,121. Producing niobium. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Dec. 9, 1955 [Nov. 18, 1954], No. 33386/54. Class 82(1) Niobium is produced by reduction of potassium niobium fluoride by means of sodium which is used in a small excess, e.g. 10 per cent, of that stoichiometrically required. The reactants are heated in an inert atmosphere such as argon to bring about initiation of the reaction and the reaction products are maintained at a temperature above the boiling point of sodium to distil any excess of sodium and any potassium which has been formed. As shown, the reactants are contained in crucible 2 in which they are placed in alternate layers, each being rammed down before addition of the next layer. The crucible is contained in reactor vessel 5 which is surmounted by a cooled condenser 6 for collection of any distilled sodium and is connected through pipe 7, valves 10 and 11 to expansion chamber 13 and to tube 14 through which evacuation and charging with argon is effected. Electric furnace 1 is energized to heat the crucible to 420‹C. at which temperature the reaction commences. At the conclusion of reaction the temperature is raised to 1100‹C. to distil off any sodium remaining. The reactor is allowed to cool to 600-700‹C., valves 10 and 11 are closed and the connection between them broken and the reactor is removed and cooled to room temperature in air. The products of reaction are removed, crushed and leached two or more times in water, the first leaching being carried out in a short period, e.g. 3 minutes, to minimize loss of niobium as niobate. The niobium may be then washed with de-mineralized water and dried.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3338654A GB791121A (en) | 1954-11-18 | 1954-11-18 | Improvements in or relating to the production of niobium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3338654A GB791121A (en) | 1954-11-18 | 1954-11-18 | Improvements in or relating to the production of niobium |
Publications (1)
Publication Number | Publication Date |
---|---|
GB791121A true GB791121A (en) | 1958-02-26 |
Family
ID=10352265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3338654A Expired GB791121A (en) | 1954-11-18 | 1954-11-18 | Improvements in or relating to the production of niobium |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB791121A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2950185A (en) * | 1958-06-13 | 1960-08-23 | Nat Res Corp | Production of tantalum powder |
US2994603A (en) * | 1958-06-20 | 1961-08-01 | Nat Distillers Chem Corp | Process of preparing columbium and tantalum |
US3012877A (en) * | 1958-06-20 | 1961-12-12 | Nat Distillers Chem Corp | Method of producing columbium and tantalum |
US3110585A (en) * | 1959-10-21 | 1963-11-12 | Ciba Ltd | Process for the manufacture of metallic niobium or tantalum or alloys thereof |
US3186834A (en) * | 1961-03-02 | 1965-06-01 | Dow Chemical Co | Preparation of rare earth metal sponge |
US3519258A (en) * | 1966-07-23 | 1970-07-07 | Hiroshi Ishizuka | Device for reducing chlorides |
-
1954
- 1954-11-18 GB GB3338654A patent/GB791121A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2950185A (en) * | 1958-06-13 | 1960-08-23 | Nat Res Corp | Production of tantalum powder |
US2994603A (en) * | 1958-06-20 | 1961-08-01 | Nat Distillers Chem Corp | Process of preparing columbium and tantalum |
US3012877A (en) * | 1958-06-20 | 1961-12-12 | Nat Distillers Chem Corp | Method of producing columbium and tantalum |
US3110585A (en) * | 1959-10-21 | 1963-11-12 | Ciba Ltd | Process for the manufacture of metallic niobium or tantalum or alloys thereof |
US3186834A (en) * | 1961-03-02 | 1965-06-01 | Dow Chemical Co | Preparation of rare earth metal sponge |
US3519258A (en) * | 1966-07-23 | 1970-07-07 | Hiroshi Ishizuka | Device for reducing chlorides |
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