GB358531A - Process for removing carbon impurities from refractory rare metals, particularly tantalum - Google Patents

Process for removing carbon impurities from refractory rare metals, particularly tantalum

Info

Publication number
GB358531A
GB358531A GB1116630A GB1116630A GB358531A GB 358531 A GB358531 A GB 358531A GB 1116630 A GB1116630 A GB 1116630A GB 1116630 A GB1116630 A GB 1116630A GB 358531 A GB358531 A GB 358531A
Authority
GB
United Kingdom
Prior art keywords
metal
oxide
temperature
removing carbon
rare
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
GB1116630A
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.)
FANSTEEL PROD CO Inc
Original Assignee
FANSTEEL PROD CO 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 FANSTEEL PROD CO Inc filed Critical FANSTEEL PROD CO Inc
Priority to GB1116630A priority Critical patent/GB358531A/en
Publication of GB358531A publication Critical patent/GB358531A/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
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/14—Refining in the solid state

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)

Abstract

A process for removing carbon impurities from refractory rare metals for example tungsten, molybdenum, niobium, and particularly tantalum consists of mixing the metal with a suitable proportion of an oxide of a volatilizable metal which volatilizes at a temperature below the meltingpoint of the rare metal and heating in vacuo to a temperature at which the carbon will be oxidized and the volatile metal volatilized, the temperature of the mixture being maintained below the melting point of the rare metal. The powdered mixture of oxide, for example magnesium, lithium, or beryllium oxide, and the metal is pressed into bars and heated for example by passing through the charge an electric current inside a sintering furnace. The carbon monoxide is pumped away and the volatile metal deposits on the cooler parts of the furnace. The oxides employed should preferably have a high proportion of oxygen.
GB1116630A 1930-04-08 1930-04-08 Process for removing carbon impurities from refractory rare metals, particularly tantalum Expired GB358531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1116630A GB358531A (en) 1930-04-08 1930-04-08 Process for removing carbon impurities from refractory rare metals, particularly tantalum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1116630A GB358531A (en) 1930-04-08 1930-04-08 Process for removing carbon impurities from refractory rare metals, particularly tantalum

Publications (1)

Publication Number Publication Date
GB358531A true GB358531A (en) 1931-10-08

Family

ID=9981221

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1116630A Expired GB358531A (en) 1930-04-08 1930-04-08 Process for removing carbon impurities from refractory rare metals, particularly tantalum

Country Status (1)

Country Link
GB (1) GB358531A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901594C (en) * 1949-08-20 1954-01-14 Monsanto Chemicals Process for the production of polymers of acrylonitrile
US2707679A (en) * 1951-01-04 1955-05-03 Westinghouse Electric Corp Methods of producing zirconium and titanium
WO1986005475A1 (en) * 1985-03-13 1986-09-25 Sri International Process for purification of solid material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901594C (en) * 1949-08-20 1954-01-14 Monsanto Chemicals Process for the production of polymers of acrylonitrile
US2707679A (en) * 1951-01-04 1955-05-03 Westinghouse Electric Corp Methods of producing zirconium and titanium
WO1986005475A1 (en) * 1985-03-13 1986-09-25 Sri International Process for purification of solid material
GB2179644A (en) * 1985-03-13 1987-03-11 Stanford Res Inst Int Process for purification of solid material
US4828814A (en) * 1985-03-13 1989-05-09 Sri International Process for purification of solid material
GB2179644B (en) * 1985-03-13 1989-12-20 Stanford Res Inst Int Process for purification of solid material

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