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 (d)

Publications (1)

Publication Number Publication Date
BE623115A true BE623115A (d)

Family

ID=195389

Family Applications (1)

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

Country Status (1)

Country Link
BE (1) BE623115A (d)

Similar Documents

Publication Publication Date Title
TWI316557B (d)
JP2022544670A (ja) 黒鉛材料を精製するためのプロセス
CN113148963A (zh) 一种碲硒分离回收的方法
US2113354A (en) Process of preparing tungsten titanium carbide
US2113353A (en) Tungsten titanium carbide, wtic
EP0008992A1 (fr) Procédé de récupération de l'indium
BE623115A (d)
JP2015533193A (ja) 銀の無溶媒合成及びそれによって製造される銀生成物
JP2003268457A (ja) セレン白金族元素含有物の溶解処理方法
CN114853018B (zh) 碳化钽粉末的制备方法
CN115716639A (zh) 一种从含金、银和铜碲渣浸出碲的工艺
CN116406429A (zh) 一种高纯金属钪的制备方法
CN118637663B (zh) 一种制备仲钨酸铵的方法
JP6908725B2 (ja) 金属回収剤、金属回収液、金属化合物回収方法および金属回収方法
JPS6021340A (ja) 銅電解殿物の浸出方法
US2913315A (en) Tungsten carbide purification
US1049193A (en) Process of obtaining pure tungstic acid.
BE524133A (d)
US707214A (en) Art of treating rebellious ores of the precious metals.
US2500912A (en) Method of making alloys
US495593A (en) Process of manufacturing zinc oxide
JP2002241866A (ja) テルルの回収方法
JPH02129321A (ja) ミッシュメタルの精製方法
US1341686A (en) Process of extracting platinum and similar metals from their sands and ores
US726884A (en) Process of treating rebellious ores of the rare metals.