HUP9801502A2 - Eljárás szennyezett wolfrám visszanyerésére - Google Patents

Eljárás szennyezett wolfrám visszanyerésére

Info

Publication number
HUP9801502A2
HUP9801502A2 HU9801502A HUP9801502A HUP9801502A2 HU P9801502 A2 HUP9801502 A2 HU P9801502A2 HU 9801502 A HU9801502 A HU 9801502A HU P9801502 A HUP9801502 A HU P9801502A HU P9801502 A2 HUP9801502 A2 HU P9801502A2
Authority
HU
Hungary
Prior art keywords
tungsten
recovering
atmosphere
ancient
pollutants
Prior art date
Application number
HU9801502A
Other languages
English (en)
Inventor
Alfred-Georg Gahn
Original Assignee
Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH.
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 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH. filed Critical Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH.
Publication of HU9801502D0 publication Critical patent/HU9801502D0/hu
Publication of HUP9801502A2 publication Critical patent/HUP9801502A2/hu
Publication of HUP9801502A3 publication Critical patent/HUP9801502A3/hu

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
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/36—Obtaining tungsten
    • C22B34/365—Obtaining tungsten from spent catalysts
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G41/00—Compounds of tungsten
    • C01G41/02—Oxides; Hydroxides
    • 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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Az eljárás vőlfrám visszanyerésére szőlgál vőlfrám szerkezetianyagőkból, melyek őxidős szennyező anyagőkat tartalmazhatnak. Azeljárás szerint a visszanyerést kémiai gázfázistranszpőrt segítségévelvégzik, és a következő műveleti lépésekből áll: - a vőlfrám szerkezetianyagőt 0,1 mm-1 mm közepes szemcsenagyságúra aprítják; - agranűlátűmőt 1300 řC-1450 řC hőmérsékletre hevítik, védőgáz-atmőszférában; - a védőgázt főkőzatősan vízgőzzel vagy nedveslevegővel helyettesítik; végül - az őxidős vőlfrámőthidrőgénatmőszférában redűkálják, 900řC-1100 řC hőfőkőn. ŕ
HU9801502A 1997-07-03 1998-07-02 Method for recovering polluted tungsten HUP9801502A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1997128490 DE19728490A1 (de) 1997-07-03 1997-07-03 Verfahren zur Rückgewinnung von dotiertem Wolfram

Publications (3)

Publication Number Publication Date
HU9801502D0 HU9801502D0 (en) 1998-09-28
HUP9801502A2 true HUP9801502A2 (hu) 1999-07-28
HUP9801502A3 HUP9801502A3 (en) 2002-02-28

Family

ID=7834571

Family Applications (1)

Application Number Title Priority Date Filing Date
HU9801502A HUP9801502A3 (en) 1997-07-03 1998-07-02 Method for recovering polluted tungsten

Country Status (4)

Country Link
EP (1) EP0889006B1 (hu)
AT (1) ATE210080T1 (hu)
DE (2) DE19728490A1 (hu)
HU (1) HUP9801502A3 (hu)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1193318B1 (de) * 2000-09-29 2004-03-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Verfahren zur Wiederverwertung von aus thoriertem Wolfram bestehenden Gegenständen
CN106947865B (zh) * 2016-05-25 2018-08-24 江西理工大学 一种废旧硬质合金高效节能氧化方法
CN113737027A (zh) * 2021-08-19 2021-12-03 长沙矿冶研究院有限责任公司 一种从含钨渣料中回收有价金属的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE372072C (de) * 1920-10-24 1923-03-20 Siemens & Halske Akt Ges Verfahren zur Herstellung von Wolframbronzen
US1800758A (en) * 1926-12-31 1931-04-14 Schwarzkopf Paul Process for the production of chemically-pure tungsten trioxide
FR1193521A (fr) * 1957-03-25 1959-11-03 Du Pont Perfectionnements à l'extraction du tungstène de produits en renfermant
JPS61291931A (ja) * 1985-06-05 1986-12-22 ウエスチングハウス　エレクトリック　コ−ポレ−ション 不揮発性の汚染物からモリブデンまたはタングステンを分離する方法
US5125964A (en) * 1990-09-10 1992-06-30 General Electric Company Fluidized bed process for preparing tungsten powder

Also Published As

Publication number Publication date
EP0889006B1 (de) 2001-12-05
HU9801502D0 (en) 1998-09-28
EP0889006A1 (de) 1999-01-07
ATE210080T1 (de) 2001-12-15
HUP9801502A3 (en) 2002-02-28
DE19728490A1 (de) 1999-01-07
DE59802295D1 (de) 2002-01-17

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