GB645832A - Improvements in and relating to the separation of niobium from tantalum - Google Patents

Improvements in and relating to the separation of niobium from tantalum

Info

Publication number
GB645832A
GB645832A GB463547A GB463547A GB645832A GB 645832 A GB645832 A GB 645832A GB 463547 A GB463547 A GB 463547A GB 463547 A GB463547 A GB 463547A GB 645832 A GB645832 A GB 645832A
Authority
GB
United Kingdom
Prior art keywords
niobium
tantalum
nitriding
nitrogen
relating
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
GB463547A
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.)
Societe Generale Metallurgique de Hoboken SA
Original Assignee
Societe Generale Metallurgique de Hoboken SA
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 Societe Generale Metallurgique de Hoboken SA filed Critical Societe Generale Metallurgique de Hoboken SA
Priority to GB463547A priority Critical patent/GB645832A/en
Publication of GB645832A publication Critical patent/GB645832A/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

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)

Abstract

Material containing the pentoxides of niobium and tantalum is treated with a nitriding agent, thereby selectively nitriding the niobium, and the product is treated with chlorine, bromine or iodine or a dissociation compound thereof, converting the niobium nitride into a volatile halide which distils and is condensed, the tantalum remaining as oxide. The nitriding may be effected with ammonia at 500-900 DEG C. or with a nitrogen-hydrogen mixture at 900 DEG C. Overheating in the chlorination stage should be avoided by diluting the halogen with an inert gas such as nitrogen.
GB463547A 1947-02-18 1947-02-18 Improvements in and relating to the separation of niobium from tantalum Expired GB645832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB463547A GB645832A (en) 1947-02-18 1947-02-18 Improvements in and relating to the separation of niobium from tantalum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB463547A GB645832A (en) 1947-02-18 1947-02-18 Improvements in and relating to the separation of niobium from tantalum

Publications (1)

Publication Number Publication Date
GB645832A true GB645832A (en) 1950-11-08

Family

ID=9780877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB463547A Expired GB645832A (en) 1947-02-18 1947-02-18 Improvements in and relating to the separation of niobium from tantalum

Country Status (1)

Country Link
GB (1) GB645832A (en)

Similar Documents

Publication Publication Date Title
GB645832A (en) Improvements in and relating to the separation of niobium from tantalum
GB809732A (en) Improvements in manufacture of n-alkyl-and n-cycloalkylbis-(2-benzothiazolesulphen)amides
GB639962A (en) Process for the production of melamine
GB646375A (en) Improvements in and relating to the separation of tantalum and niobium in mixtures of their oxides
GB617896A (en) Improved process of recovering tungsten from tungsten carbide
GB637412A (en) Process of preparing benzene hexachloride
GB168576A (en) Improvements relating to the manufacture of trichlorhydrin
GB992435A (en) Iron carbonitride powder and process for the production thereof
GB638117A (en) A process for the production of vinylidene chloride
GB677253A (en) New diazabutadiene sulphonic acids
GB623160A (en) Improved method of manufacturing thorium
GB610166A (en) Improvements in and relating to the production of gamma-butyrolactone
GB591857A (en) Improvements in and relating to azeotropic mixtures of chlorosilanes
GB612607A (en) Aluminothermic and like exothermic processes
GB620134A (en) Improvements in and relating to the production of di-(ú­-chlorophenyl)-trichlorethane
GB635645A (en) Production of organohalosilanes
GB858650A (en) Improvements in or relating to the production of cyanuric chloride
GB633097A (en) Improvements in and relating to the production of side-chain chlorinated methyl naphthalenes
GB621962A (en) Method of preparing hexachlorobenzene
GB627280A (en) Improvements in and relating to the preparation of a new ketone having analgesic properties
GB963634A (en) Fluorovinyl-oxazetidines
GB1012930A (en) 4-methyl-6-[2-formyl-propene-1-yl]-pyrone-(2) and a process for its manufacture
CA439334A (en) Chlorine recovery from chlorine-containing gas mixtures
CA439333A (en) Chlorine recovery from chlorine-containing gas mixtures
GB601511A (en) Improvements in or relating to the production of chloronitriles