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WO2005118890A3 - Recovery of steel from contaminated scrap - Google Patents

Recovery of steel from contaminated scrap Download PDF

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Publication number
WO2005118890A3
WO2005118890A3 PCT/GB2005/002130 GB2005002130W WO2005118890A3 WO 2005118890 A3 WO2005118890 A3 WO 2005118890A3 GB 2005002130 W GB2005002130 W GB 2005002130W WO 2005118890 A3 WO2005118890 A3 WO 2005118890A3
Authority
WO
WIPO (PCT)
Prior art keywords
scrap
steel
liquid
tin
preheated
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/GB2005/002130
Other languages
French (fr)
Other versions
WO2005118890A2 (en
Inventor
Noel Warner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US10/590,409 priority Critical patent/US20070180955A1/en
Priority to GB0623373A priority patent/GB2437374B/en
Publication of WO2005118890A2 publication Critical patent/WO2005118890A2/en
Publication of WO2005118890A3 publication Critical patent/WO2005118890A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C22B9/04—Refining by applying a vacuum
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum
    • 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
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/0056—Scrap treating
    • 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
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
    • 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)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

This invention provides a method for overcoming the adverse effects of disintegration of molten steel streams due to sub-surface growth of carbon monoxide bubbles when exposed to reduced pressures and thus permits refining of liquid scrap much the same way as if it were a quiescent liquid melt. Steel scrap contaminated with copper, tin, zinc and organics, such as PVC coating, is preheated and melted continuously using melt circulation and then continuously refined in-line to yield high quality liquid steel and separate non-ferrous metal byproducts by straightforward physical desorption under reduced pressure using an inert strip gas within a desorber and then subsequent iron vapour condensation by direct contacting with liquid steel followed by selective condensation of copper initially and then recovery of tin. Formation of dioxins from scrap containing chlorine is precluded by in­line scrubbing of pyrolysis gas formed during scrap preheating. The initial melting of preheated scrap employs melt circulation and gas combustion rather than fossil fuel generated electricity and is thus inherently energy efficient.
PCT/GB2005/002130 2004-05-29 2005-05-26 Recovery of steel from contaminated scrap Ceased WO2005118890A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/590,409 US20070180955A1 (en) 2004-05-29 2005-05-26 Recovery of steel from contaminated scrap
GB0623373A GB2437374B (en) 2004-05-29 2005-05-26 Recovery of steel from contaminated scrap

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0412105.9 2004-05-29
GB0412105A GB0412105D0 (en) 2004-05-29 2004-05-29 Recovery of steel from contaminated scrap

Publications (2)

Publication Number Publication Date
WO2005118890A2 WO2005118890A2 (en) 2005-12-15
WO2005118890A3 true WO2005118890A3 (en) 2006-04-27

Family

ID=32671333

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/002130 Ceased WO2005118890A2 (en) 2004-05-29 2005-05-26 Recovery of steel from contaminated scrap

Country Status (3)

Country Link
US (1) US20070180955A1 (en)
GB (2) GB0412105D0 (en)
WO (1) WO2005118890A2 (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040250700A1 (en) * 2000-04-19 2004-12-16 Renaud Regis Phillip Method and apparatus for treating refuse with steam
GB0504260D0 (en) * 2005-03-02 2005-04-06 Warner Noel A Process and plant for gas-based direct steelmaking
GB0615952D0 (en) * 2006-08-11 2006-09-20 Warner Noel A Radiative post combustion
US20080184589A1 (en) * 2007-02-02 2008-08-07 The Shivvers Group, Inc., An Iowa Corporation High efficiency drier with heating and drying zones
US20090221865A1 (en) * 2008-02-28 2009-09-03 Renaud Regis P Method and apparatus for injecting enriched steam
US8258364B2 (en) * 2008-06-16 2012-09-04 Renaud Regis P Method for steam biomass reactor
US8518147B2 (en) 2010-07-27 2013-08-27 Heritage Environmental Services, Llc Metal separation using a tunnel kiln furnace
CZ305001B6 (en) * 2013-08-05 2015-03-18 Vysoká Škola Báňská-Technická Univerzita Ostrava Separation process of zinc from zinc-plated iron scrap
ES2457140B1 (en) * 2013-12-11 2014-10-28 La Farga Lacambra, S.A.U. System and procedure for loading melting furnaces and refining copper scrap and associated furnace
US20160284445A1 (en) * 2015-03-28 2016-09-29 Y Generation Technologies Company Limited Energy efficient copper wire production system
JP6628078B2 (en) * 2015-08-27 2020-01-08 国立大学法人九州工業大学 Steel plating separation method
US9771824B2 (en) * 2015-09-22 2017-09-26 General Electric Company Method and system for an electric and steam supply system
WO2018083433A1 (en) * 2016-11-07 2018-05-11 Warner Noel A Steel production without plant-site carbon dioxide emission
CN108070716B (en) * 2016-11-15 2020-04-28 格林美（江苏）钴业股份有限公司 Device for removing water phase from loaded organic phase
EP3537317B1 (en) 2018-03-09 2022-11-16 Tata Consultancy Services Limited System and method for determination of air entrapment in ladles
WO2020006007A1 (en) * 2018-06-25 2020-01-02 Valerio Thomas A Method, process, and system of using a mill to separate metals from fibrous feedstock
TWI740285B (en) * 2018-12-27 2021-09-21 日商勝高股份有限公司 Method for determining pretreatment conditions of heat treatment furnace, pretreatment method of heat treatment furnace, heat treatment device, and heat-treated semiconductor wafer manufacturing method and manufacturing device
CN109628746B (en) * 2019-01-03 2021-02-26 江西铜业技术研究院有限公司 Method for extracting tin from silver separating slag
CN112359154B (en) * 2019-07-23 2022-03-18 宝山钢铁股份有限公司 Experimental device and method for simulating formation of iron layer on surface of blast furnace hearth carbon brick
JP7713462B2 (en) * 2020-02-22 2025-07-25 クララパス， インコーポレイテッド Sectioning and quality control in microtomy
CN111693559B (en) * 2020-06-22 2022-04-01 中国核动力研究设计院 Vapor droplet mass flow separation measuring device and method for gas-phase mixture
CN112111624B (en) * 2020-08-18 2021-10-26 含山县龙顺机械配件厂 Utilize recycling device of scrap iron bits scrap steel production foundry goods
CN112247302A (en) * 2020-10-14 2021-01-22 天津津航计算技术研究所 Automatic tin-coating, tin-absorbing and gold-removing process method for gold-plated electric connector
CN112375871B (en) * 2020-11-04 2022-04-29 武汉科技大学 Method for detinning in pure steel smelting process
CA3208963A1 (en) 2021-01-26 2022-08-04 Nucor Corporation Method and system of reducing non-ferrous metal content of scrap steel
CN116287717A (en) * 2023-02-16 2023-06-23 马鞍山钢铁股份有限公司 A device for dezincification and recovery of zinc-containing scrap steel and its use method
EP4495272A1 (en) * 2023-07-21 2025-01-22 Tata Steel Nederland Technology B.V. Method for producing a steel melt with a reduced carbon footprint and high-grade steel product produced thereby

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1814471A1 (en) * 1968-12-13 1970-06-25 Diehl Fa Smelting fine pieces and chips of metal - scrap or pulverulent scrap
JPS51126911A (en) * 1975-04-30 1976-11-05 Mitsubishi Heavy Ind Ltd Process for preparatory refining of steel scraps
EP0266975A1 (en) * 1986-11-06 1988-05-11 The University Of Birmingham Smelting reduction
JPH0748632A (en) * 1993-05-20 1995-02-21 Kobayashi Heinosuke Method for removing impurity from scrap iron
WO2002036834A2 (en) * 2000-11-06 2002-05-10 Voest-Alpine Industrieanlagenbau Gmbh & Co Method and apparatus for utilising recyclings containing iron and heavy metals while involving the use of a melting cyclone, a separating vessel, and a vessel for carrying out metallurgical treatment
WO2004007775A2 (en) * 2002-07-15 2004-01-22 Noel Alfred Warner Direct melting and refining of metal oxide material

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US2760770A (en) * 1949-03-11 1956-08-28 Metallurg Processes Ltd And Th Condenser used in zinc production
US3529067A (en) * 1968-08-21 1970-09-15 Gerald J Grott Method and apparatus for reclaiming low-density contaminated scrap steel
US4456476A (en) * 1982-02-24 1984-06-26 Sherwood William L Continuous steelmaking and casting
US4853148A (en) * 1987-03-24 1989-08-01 Advanced Technology Materials, Inc. Process and composition for drying of gaseous hydrogen halides

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1814471A1 (en) * 1968-12-13 1970-06-25 Diehl Fa Smelting fine pieces and chips of metal - scrap or pulverulent scrap
JPS51126911A (en) * 1975-04-30 1976-11-05 Mitsubishi Heavy Ind Ltd Process for preparatory refining of steel scraps
EP0266975A1 (en) * 1986-11-06 1988-05-11 The University Of Birmingham Smelting reduction
EP0427710A1 (en) * 1986-11-06 1991-05-15 The University Of Birmingham Smelting reduction
JPH0748632A (en) * 1993-05-20 1995-02-21 Kobayashi Heinosuke Method for removing impurity from scrap iron
WO2002036834A2 (en) * 2000-11-06 2002-05-10 Voest-Alpine Industrieanlagenbau Gmbh & Co Method and apparatus for utilising recyclings containing iron and heavy metals while involving the use of a melting cyclone, a separating vessel, and a vessel for carrying out metallurgical treatment
WO2004007775A2 (en) * 2002-07-15 2004-01-22 Noel Alfred Warner Direct melting and refining of metal oxide material

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 197651, Derwent World Patents Index; Class M25, AN 1976-95291X, XP002364669 *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 05 30 June 1995 (1995-06-30) *
WARNER N A: "Conductive heating and melt circulation in pyrometallurgy", TRANS INST MIN METALL SECT C MINER PROCESS EXTR METALL; TRANSACTIONS OF THE INSTITUTION OF MINING AND METALLURGY, SECTION C: MINERAL PROCESSING AND EXTRACTIVE METALLURGY DECEMBER 2003, vol. 112, no. 3 DEC., December 2003 (2003-12-01), pages 141 - 154, XP008058918 *
WARNER N A: "CONTINUOUS OXYGEN STEELMAKING WITH COPPER-, TIN-, AND ZINC-CONTAMINATED SCRAP", METALLURGICAL AND MATERIALS TRANSACTIONS B: PROCESS METALLURGY & MATERIALS PROCESSING SCIENCE, TMS, WARRENDALE, PA, US, vol. 35B, no. 4, August 2004 (2004-08-01), pages 663 - 674, XP001200943, ISSN: 1073-5623 *
WARNER NOEL A: "Continuous steelmaking based on natural gas", AISTECH IRON STEEL TECHNOL. CONF. PROC.; AISTECH 2004 - IRON AND STEEL TECHNOLOGY CONFERENCE PROCEEDINGS; AISTECH 2004 - IRON AND STEEL TECHNOLOGY CONFERENCE PROCEEDINGS 2004, vol. 2, 2004, pages 419 - 431, XP008058919 *

Also Published As

Publication number Publication date
GB0623373D0 (en) 2007-01-03
GB0412105D0 (en) 2004-06-30
WO2005118890A2 (en) 2005-12-15
US20070180955A1 (en) 2007-08-09
GB2437374B (en) 2010-03-24
GB2437374A (en) 2007-10-24

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