WO2003035917A3 - Method for processing magnesium containing scrap by melting in a vacuum furnace - Google Patents

Method for processing magnesium containing scrap by melting in a vacuum furnace Download PDF

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Publication number
WO2003035917A3
WO2003035917A3 PCT/HU2002/000106 HU0200106W WO03035917A3 WO 2003035917 A3 WO2003035917 A3 WO 2003035917A3 HU 0200106 W HU0200106 W HU 0200106W WO 03035917 A3 WO03035917 A3 WO 03035917A3
Authority
WO
WIPO (PCT)
Prior art keywords
melting
vacuum
scrap
magnesium
crucible
Prior art date
Application number
PCT/HU2002/000106
Other languages
French (fr)
Other versions
WO2003035917A2 (en
Inventor
Gabor Vallo
Istvan Hegedues
Jozsef Haupt
Tibor Jonyer
Original Assignee
Gabor Vallo
Istvan Hegedues
Jozsef Haupt
Tibor Jonyer
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 Gabor Vallo, Istvan Hegedues, Jozsef Haupt, Tibor Jonyer filed Critical Gabor Vallo
Priority to AU2002341227A priority Critical patent/AU2002341227A1/en
Publication of WO2003035917A2 publication Critical patent/WO2003035917A2/en
Publication of WO2003035917A3 publication Critical patent/WO2003035917A3/en

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
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
    • 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
    • C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
    • C22B26/20—Obtaining alkaline earth metals or magnesium
    • C22B26/22—Obtaining magnesium
    • 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001—Dry processes
    • C22B7/003—Dry processes only remelting, e.g. of chips, borings, turnings; apparatus used therefor
    • 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
    • C22B9/04—Refining by applying a vacuum
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A method, that enables the processing and recycling of magnesium-containing scrap, primarily the highly flammable scrap with large surface-to-volume ratio, (clips, flashing, turnings, chips), by way of melting, whilst maintaining a suitable quality of the metal for die-casting, which method is carried out in a vacuum furnace, rated for low overpressure, vacuum, having a double-jacketed melting hearth and a vacuum-sealed crucible. Magnesium-containing scrap is charges into the crucible of the vacuum furnace and the temperature is raised until the charge reaches the melting point. The sealed melting hearth evacuated space is maintained until the melting process is completed. Then the space above the melt is filled up with protective inert gas maintained under a pressure above the atmospheric pressure, and a flux mixture is introduced onto the bath surface, and the bath of molten metal together with the introduced flux is agitated, whilst preferably continuously introducing protective inert gas into the interior of the said bath. The emerging dross is skimmed off and agitation is continued until no more dross emerges. Then a new charge of scrap is charged into the crucible maintained under inert gas pressure to reach a required melt volume. After seal closing the next gas pressure is discontinued and the vacuum system is opened for refining the magnesium melt.
PCT/HU2002/000106 2001-10-24 2002-10-18 Method for processing magnesium containing scrap by melting in a vacuum furnace WO2003035917A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002341227A AU2002341227A1 (en) 2001-10-24 2002-10-18 Method for processing magnesium containing scrap by melting in a vacuum furnace

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU0104447A HUP0104447A2 (en) 2001-10-24 2001-10-24 Process for the refining of waste materials containing magnesium
HUP0104447 2001-10-24

Publications (2)

Publication Number Publication Date
WO2003035917A2 WO2003035917A2 (en) 2003-05-01
WO2003035917A3 true WO2003035917A3 (en) 2003-07-17

Family

ID=89979826

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU2002/000106 WO2003035917A2 (en) 2001-10-24 2002-10-18 Method for processing magnesium containing scrap by melting in a vacuum furnace

Country Status (3)

Country Link
AU (1) AU2002341227A1 (en)
HU (1) HUP0104447A2 (en)
WO (1) WO2003035917A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100417905C (en) * 2005-03-29 2008-09-10 清华大学 Mg alloy vacuum sealing smelter and method for preventing Mg alloy from oxidation burning
DE102007025602A1 (en) * 2006-12-29 2008-07-03 Hoesch Metallurgie Gmbh Solid metal bath fluxing agent for treating a metal bath comprises at least two separate solid components
CN102338561A (en) * 2011-09-09 2012-02-01 宁波国钰光伏材料有限公司 Foamed ceramic gas crucible
WO2016131174A1 (en) * 2015-02-16 2016-08-25 谭何易 Production line for producing national-standard magnesium alloy ingots on the basis of magnesium alloy waste material
IT201900013272A1 (en) * 2019-07-30 2021-01-30 Ikoi S P A PROTECTION STRUCTURE FOR THE TILTING OR TILTING CRUCIBLE TYPE FOR USE IN DISTILLATION PROCESSES, IN PARTICULAR VACUUM DISTILLATION.
CN111926190A (en) * 2020-09-07 2020-11-13 百色学院 Magnesium alloy scrap vacuum frit system
CN113441727B (en) * 2021-06-25 2023-03-14 中天上材增材制造有限公司 Vacuum melting aerosol furnace and material smashing and slag pushing device thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843355A (en) * 1972-04-04 1974-10-22 Dow Chemical Co Method for melting and purifying magnesium
EP0068901A1 (en) * 1981-06-30 1983-01-05 Morganite Carbon Kabushiki Kaisha A furnace for melting metal swarf
DE3909136A1 (en) * 1986-06-10 1989-11-02 Albert Braach Gmbh & Co Kg Mod Method and apparatus for casting shaped parts, for example motor vehicle wheels, from aluminium, magnesium and similar light metals in low-pressure casting machines
CN1088268A (en) * 1993-09-30 1994-06-22 卢建德 Process for recovering magnesium from magnesium slag
JPH06299260A (en) * 1991-08-07 1994-10-25 Japan Metals & Chem Co Ltd Regeneration treatment of magnesium swarf
JP2000273555A (en) * 1999-03-24 2000-10-03 Mitsui Mining & Smelting Co Ltd Method for regenerating coated magnesium scrap

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843355A (en) * 1972-04-04 1974-10-22 Dow Chemical Co Method for melting and purifying magnesium
EP0068901A1 (en) * 1981-06-30 1983-01-05 Morganite Carbon Kabushiki Kaisha A furnace for melting metal swarf
DE3909136A1 (en) * 1986-06-10 1989-11-02 Albert Braach Gmbh & Co Kg Mod Method and apparatus for casting shaped parts, for example motor vehicle wheels, from aluminium, magnesium and similar light metals in low-pressure casting machines
JPH06299260A (en) * 1991-08-07 1994-10-25 Japan Metals & Chem Co Ltd Regeneration treatment of magnesium swarf
CN1088268A (en) * 1993-09-30 1994-06-22 卢建德 Process for recovering magnesium from magnesium slag
JP2000273555A (en) * 1999-03-24 2000-10-03 Mitsui Mining & Smelting Co Ltd Method for regenerating coated magnesium scrap

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199502, Derwent World Patents Index; Class M25, AN 1995-012187, XP002241217 *
DATABASE WPI Section Ch Week 199531, Derwent World Patents Index; Class M25, AN 1995-232289, XP002241218 *
DITZE A: "UEBERBLICK UEBERDAS RECYCLING VON MAGNESIUMLEGIERUNGEN", ERZMETALL, RIEDERER VERLAG GMBH. STUTTGART, DE, vol. 54, no. 2, 1 February 2001 (2001-02-01), pages 69 - 70, XP001003146, ISSN: 0044-2658 *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 13 5 February 2001 (2001-02-05) *

Also Published As

Publication number Publication date
AU2002341227A1 (en) 2003-05-06
HU0104447D0 (en) 2001-12-28
HUP0104447A2 (en) 2003-05-28
WO2003035917A2 (en) 2003-05-01

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