BE623115A - - Google Patents

Info

Publication number
BE623115A
BE623115A BE623115DA BE623115A BE 623115 A BE623115 A BE 623115A BE 623115D A BE623115D A BE 623115DA BE 623115 A BE623115 A BE 623115A
Authority
BE
Belgium
Prior art keywords
high purity
tungsten
boric acid
reducing agent
calcium
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE623115A publication Critical patent/BE623115A/fr

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00Obtaining refractory metals
    • C22B34/30Obtaining chromium, molybdenum or tungsten
    • C22B34/36Obtaining tungsten

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)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
BE623115D BE623115A (2)

Publications (1)

Publication Number Publication Date
BE623115A true BE623115A (2)

Family

ID=195389

Family Applications (1)

Application Number Title Priority Date Filing Date
BE623115D BE623115A (2)

Country Status (1)

Country Link
BE (1) BE623115A (2)

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