WO2002042502A3 - Method and equipment for handling dross and recovering the non-ferrous metals contained therein - Google Patents

Method and equipment for handling dross and recovering the non-ferrous metals contained therein Download PDF

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Publication number
WO2002042502A3
WO2002042502A3 PCT/BR2001/000142 BR0100142W WO0242502A3 WO 2002042502 A3 WO2002042502 A3 WO 2002042502A3 BR 0100142 W BR0100142 W BR 0100142W WO 0242502 A3 WO0242502 A3 WO 0242502A3
Authority
WO
WIPO (PCT)
Prior art keywords
dross
equipment
present
recipient
ferrous metals
Prior art date
Application number
PCT/BR2001/000142
Other languages
French (fr)
Other versions
WO2002042502B1 (en
WO2002042502A8 (en
WO2002042502A2 (en
Inventor
Cruz Antonio Carlos Da
Original Assignee
Inst Pesquisas Tech
Cruz Antonio Carlos Da
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 Inst Pesquisas Tech, Cruz Antonio Carlos Da filed Critical Inst Pesquisas Tech
Priority to AU2002223314A priority Critical patent/AU2002223314A1/en
Publication of WO2002042502A2 publication Critical patent/WO2002042502A2/en
Publication of WO2002042502A3 publication Critical patent/WO2002042502A3/en
Publication of WO2002042502B1 publication Critical patent/WO2002042502B1/en
Publication of WO2002042502A8 publication Critical patent/WO2002042502A8/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
    • 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
    • C22B7/004—Dry processes separating two or more metals by melting out (liquation), i.e. heating above the temperature of the lower melting metal component(s); by fractional crystallisation (controlled freezing)
    • 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
    • C22B21/00—Obtaining aluminium
    • C22B21/0038—Obtaining aluminium by other processes
    • C22B21/0069—Obtaining aluminium by other processes from scrap, skimmings or any secondary source aluminium, e.g. recovery of alloy constituents
    • 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
    • C22B7/04—Working-up slag
    • 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)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

The present invention refers to a method and respective apparatus for the recovery of the free metal present in hot dross which is produced when non-ferrous metals are processed at temperatures above their melting point. The method consists of charging the hot dross collected from the liquid bath surface of holding or melting furnaces, directly into an equipment provided with thermal insulation and means for control of its internal atmosphere. This operation is followed by the transportation of such an equipment to a processing unit located not far from the site were the dross has been generated. The processing unit being provided with transfer devices and one or more sealed rotary furnaces provided with controlled atmosphere, which work in the accumulation and agitation of the dross, and the subsequent separation of the free metal contained therein. The equipment used in the recovery of non-ferrous metals present in dross, object of the present invention, consists of a recipient provided with thermally insulated walls, and a cover also thermally insulated that is well adjusted to the body of the recipient, and is provided with an inert gas injection port, a lifting and transfer device for removing the dross from the recipient into a feeding device well adjusted to the door of a sealed furnace that acts both as a dross accumulator and in the free metal separation from dross.
PCT/BR2001/000142 2000-11-21 2001-11-21 Method and equipment for handling dross and recovering the non-ferrous metals contained therein WO2002042502A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002223314A AU2002223314A1 (en) 2000-11-21 2001-11-21 Method and equipment for handling dross and recovering the non-ferrous metals contained therein

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0013444-9 2000-11-21
BR0013444A BR0013444A (en) 2000-11-21 2000-11-21 Process and equipment for the recovery of non-ferrous metals carried in lees and slag

Publications (4)

Publication Number Publication Date
WO2002042502A2 WO2002042502A2 (en) 2002-05-30
WO2002042502A3 true WO2002042502A3 (en) 2002-10-03
WO2002042502B1 WO2002042502B1 (en) 2002-12-27
WO2002042502A8 WO2002042502A8 (en) 2003-02-20

Family

ID=3946444

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2001/000142 WO2002042502A2 (en) 2000-11-21 2001-11-21 Method and equipment for handling dross and recovering the non-ferrous metals contained therein

Country Status (3)

Country Link
AU (1) AU2002223314A1 (en)
BR (1) BR0013444A (en)
WO (1) WO2002042502A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2768991A4 (en) * 2011-10-18 2015-06-17 Pyrogenesis Canada Inc Energy efficient salt-free recovery of metal from dross
CN108085241B (en) * 2018-01-25 2024-02-06 吉林冠界生物技术有限公司 Powder material adding device and tank containing same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481591A (en) * 1947-09-05 1949-09-13 Aluminum Co Of America Treatment of aluminous dross
US3043678A (en) * 1959-08-12 1962-07-10 Kaiser Aluminium Chem Corp Reclamation of metallic values from aluminous dross
JPS59190305A (en) * 1983-03-31 1984-10-29 Nippon Steel Chem Co Ltd Pot car for carrying melt
WO1997039155A1 (en) * 1996-04-15 1997-10-23 Pyrogenesis Inc. Recovery of metal from dross
US5996677A (en) * 1996-02-02 1999-12-07 Connell Limited Partnership Method and apparatus for supplying molten metal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481591A (en) * 1947-09-05 1949-09-13 Aluminum Co Of America Treatment of aluminous dross
US3043678A (en) * 1959-08-12 1962-07-10 Kaiser Aluminium Chem Corp Reclamation of metallic values from aluminous dross
JPS59190305A (en) * 1983-03-31 1984-10-29 Nippon Steel Chem Co Ltd Pot car for carrying melt
US5996677A (en) * 1996-02-02 1999-12-07 Connell Limited Partnership Method and apparatus for supplying molten metal
WO1997039155A1 (en) * 1996-04-15 1997-10-23 Pyrogenesis Inc. Recovery of metal from dross

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 045 (C - 268) 26 February 1985 (1985-02-26) *

Also Published As

Publication number Publication date
BR0013444A (en) 2002-06-25
WO2002042502B1 (en) 2002-12-27
WO2002042502A8 (en) 2003-02-20
WO2002042502A2 (en) 2002-05-30
AU2002223314A1 (en) 2002-06-03

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