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CA2222401A1 - Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases - Google Patents

Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases

Info

Publication number
CA2222401A1
CA2222401A1 CA002222401A CA2222401A CA2222401A1 CA 2222401 A1 CA2222401 A1 CA 2222401A1 CA 002222401 A CA002222401 A CA 002222401A CA 2222401 A CA2222401 A CA 2222401A CA 2222401 A1 CA2222401 A1 CA 2222401A1
Authority
CA
Canada
Prior art keywords
scrap
compartment
waste gas
charge
preheating
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.)
Granted
Application number
CA002222401A
Other languages
French (fr)
Other versions
CA2222401C (en
Inventor
Robert Roy Wunsche
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.)
Empco Canada Ltd
Original Assignee
Empco Canada Ltd
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 Empco Canada Ltd filed Critical Empco Canada Ltd
Priority to CA 2222401 priority Critical patent/CA2222401C/en
Priority to ZA9810618A priority patent/ZA9810618B/en
Priority to AU94056/98A priority patent/AU747445B2/en
Priority to US09/198,786 priority patent/US6024912A/en
Priority to ID981529A priority patent/ID21733A/en
Priority to UA98116276A priority patent/UA49016C2/en
Priority to TR1998/02446A priority patent/TR199802446A3/en
Priority to JP33629198A priority patent/JPH11223474A/en
Priority to ARP980106015 priority patent/AR014040A1/en
Priority to PL32996298A priority patent/PL329962A1/en
Priority to CN98122947A priority patent/CN1102662C/en
Priority to CZ983889A priority patent/CZ388998A3/en
Priority to EP98963516A priority patent/EP1034313B1/en
Priority to KR1019980051240A priority patent/KR19990045642A/en
Priority to AT98963516T priority patent/ATE224461T1/en
Priority to DE59805641T priority patent/DE59805641D1/en
Priority to AU18756/99A priority patent/AU1875699A/en
Priority to PCT/EP1998/007622 priority patent/WO1999028513A1/en
Priority to SK1634-98A priority patent/SK163498A3/en
Publication of CA2222401A1 publication Critical patent/CA2222401A1/en
Application granted granted Critical
Publication of CA2222401C publication Critical patent/CA2222401C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C21C5/565—Preheating of scrap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
    • F27D13/002—Preheating scrap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0025—Charging or loading melting furnaces with material in the solid state
    • F27D3/003—Charging laterally, e.g. with a charging box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/04—Ram or pusher apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0065—Lifts, e.g. containing the bucket elevators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots
    • F27D2003/105—Charging directly from hoppers or shoots using shutters
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)

Abstract

The invention provides a novel preheating apparatus and method for preheating a ferrous scrap mixture prior to feeding the scrap into a metallurgical furnance primarily using heat recovered from hot waste gases emitted from the furnace exhaust port, and simultaneously reducing contaminants from the scrap and from the waste gases, with concurrent downward flow of hot waste gases and downwardly descending scrap.
The apparatus has a chamber, including a top compartment with a cold scrap input for depositing cold scrap into the top compartment and a hot waste gas inlet in flow communication with the furnace exhaust port. The chamber also has a bottom compartment with a heated scrap discharging mechanism for force delivering the heated scrap into the furnace and a waste gas outlet in flow communication with a vacuum exhaust for evacuating spent waste gas. Gas permeable gates are disposed between each chamber compartment and sequentially operate between a closed gate position and an open gate position, for concurrently receiving a gravity fed charge of scrap from the cold scrap input in a closed gate position, and during a predetermined dwell period supporting the scrap charge while hot waste gas flows downwardly from the hot gas inlet in the top compartment, permeates through the scrap charge and through the closed gates, and flows out the waste gas outlet in the bottom compartment. The gates mix the scrap as it falls and serve to control the gravitational descent of the scrap charge from the top compartment to the bottom compartment on expiry of the dwell period.
CA 2222401 1997-11-27 1997-11-27 Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases Expired - Lifetime CA2222401C (en)

Priority Applications (19)

Application Number Priority Date Filing Date Title
CA 2222401 CA2222401C (en) 1997-11-27 1997-11-27 Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases
ZA9810618A ZA9810618B (en) 1997-11-27 1998-11-20 Preheating ferrous scrap mixture
AU94056/98A AU747445B2 (en) 1997-11-27 1998-11-23 Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases
US09/198,786 US6024912A (en) 1997-11-27 1998-11-24 Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases
ID981529A ID21733A (en) 1997-11-27 1998-11-25 PROCESSING AND PROCESSING SYSTEMS FOR EARLY HEATING OF STEEL WASTE TO BE MOLDED IN METALURGY TANK WITH METAL WASTE FLOW AND HISTORIC HEATING GAS FLOWS
TR1998/02446A TR199802446A3 (en) 1997-11-27 1998-11-26 Pre-heating mechanism of steel scrap to be melted in metallurgical furnaces
JP33629198A JPH11223474A (en) 1997-11-27 1998-11-26 Steel scrap preheater for melting metallurgical furnace employing parallel flow of scrap and high temperature waste gas and process system thereof
ARP980106015 AR014040A1 (en) 1997-11-27 1998-11-26 PRE-HEATING EQUIPMENT AND METHOD FOR PRE-HEATING A FERRICA CHATARRA BLEND TO FEED A METALLURGICAL OVEN
UA98116276A UA49016C2 (en) 1997-11-27 1998-11-26 Unit and method for heating ferrous scrap mixture before feeding it to metallurgical furnace
AU18756/99A AU1875699A (en) 1997-11-27 1998-11-27 Device and process system for preheating steel scrap
PL32996298A PL329962A1 (en) 1997-11-27 1998-11-27 Apparatus for and method of preheating scrap metal before charging it into a metallurgical furnace
EP98963516A EP1034313B1 (en) 1997-11-27 1998-11-27 Device and process system for preheating steel scrap
KR1019980051240A KR19990045642A (en) 1997-11-27 1998-11-27 Apparatus and processing system for preheating steel scrap for molten metal treatment furnace with co-flow of scrap and heating gas
AT98963516T ATE224461T1 (en) 1997-11-27 1998-11-27 DEVICE AND PROCESS SYSTEM FOR PREHEATING STEEL SCRAP
DE59805641T DE59805641D1 (en) 1997-11-27 1998-11-27 DEVICE AND PROCESS SYSTEM FOR PREHEATING STEEL SCRAP
CN98122947A CN1102662C (en) 1997-11-27 1998-11-27 Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases
PCT/EP1998/007622 WO1999028513A1 (en) 1997-11-27 1998-11-27 Device and process system for preheating steel scrap
SK1634-98A SK163498A3 (en) 1997-11-27 1998-11-27 Preheating apparatus and method for preheating a ferrous scrap mixture with concurrent downward flow of hot waste gases and downwardly descending scrap, designed for metallurgical melting furnaces
CZ983889A CZ388998A3 (en) 1997-11-27 1998-11-27 Preheating equipment and process of preheating iron scrap with parallel-flow passage of iron scrap and heating gases, intended for metallurgical melting furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2222401 CA2222401C (en) 1997-11-27 1997-11-27 Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases

Publications (2)

Publication Number Publication Date
CA2222401A1 true CA2222401A1 (en) 1999-05-27
CA2222401C CA2222401C (en) 2002-09-17

Family

ID=4161810

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2222401 Expired - Lifetime CA2222401C (en) 1997-11-27 1997-11-27 Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases

Country Status (17)

Country Link
EP (1) EP1034313B1 (en)
JP (1) JPH11223474A (en)
KR (1) KR19990045642A (en)
CN (1) CN1102662C (en)
AR (1) AR014040A1 (en)
AT (1) ATE224461T1 (en)
AU (2) AU747445B2 (en)
CA (1) CA2222401C (en)
CZ (1) CZ388998A3 (en)
DE (1) DE59805641D1 (en)
ID (1) ID21733A (en)
PL (1) PL329962A1 (en)
SK (1) SK163498A3 (en)
TR (1) TR199802446A3 (en)
UA (1) UA49016C2 (en)
WO (1) WO1999028513A1 (en)
ZA (1) ZA9810618B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010111779A2 (en) * 2009-04-02 2010-10-07 Hatch Ltd. Dust collection system for calcine transfer container
WO2013132306A1 (en) 2012-03-09 2013-09-12 Danieli & C. Officine Meccaniche Spa Apparatus and method to feed and preheat a metal charge to a melting furnace
US11971218B1 (en) 2023-09-01 2024-04-30 Zhejiang Hailiang Co., Ltd. Automatic charging apparatus for a furnace
EP4509789A1 (en) * 2023-08-17 2025-02-19 Zhejiang Hailiang Co., Ltd. Charging apparatus for a furnace

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Publication number Priority date Publication date Assignee Title
DE19902438A1 (en) * 1999-01-22 2000-07-27 Sms Demag Ag Scrap preheating equipment, especially for the cold iron or steel scrap charge of an electric arc furnace, comprises a charging chamber positioned above a preheating chamber and has inlet and outlet openings operated as locks
DE19926059A1 (en) * 1999-06-08 2000-12-14 Sms Demag Ag Preheater
DE19956578A1 (en) * 1999-11-25 2001-05-31 Sms Demag Ag Process for preheating the charge of an electric arc furnace comprises preheating the charge, preferably, hot briquetted iron or direct reduced iron, by flue gas
US6696013B2 (en) * 2000-11-10 2004-02-24 Empco (Canada) Ltd. Metallurgical furnace with scrap metal preheater and dispenser
DE102008020449A1 (en) * 2008-04-01 2009-10-15 Manfred Husslein Industrial furnace and method for operating an industrial furnace
KR100907956B1 (en) * 2008-04-30 2009-07-16 윤수현 Material preheating device for metal melting equipment
DE102008060774B4 (en) * 2008-12-05 2013-03-28 Wiktor Raile Scrap heating process and devices in steelmaking plants
WO2011020092A1 (en) * 2009-08-14 2011-02-17 Pyrotek, Inc. Waste heat system
JP2011042851A (en) * 2009-08-24 2011-03-03 Tokushu Denkyoku Kk Dezincification apparatus
IT1401116B1 (en) * 2010-07-14 2013-07-12 Tenova Spa LOADING SYSTEM CONTINUES TO A FUSION OVEN OF PRE-HEATED METALLIC MATERIAL IN CONTINUOUS FORM, ENHANCED AND COMBINED.
IT1401529B1 (en) * 2010-08-18 2013-07-26 Tenova Spa METHOD AND SYSTEM OF CONTROL AND TRACKING OF THE CHARGE OF MATERIAL CARRIED BY A CONTINUOUS POWER SUPPLY CONVEYOR OF A METALLURGICAL OVEN, PARTICULARLY AN ELECTRIC OVEN FOR THE PRODUCTION OF STEEL
DE102010040879A1 (en) * 2010-09-16 2012-03-22 Siemens Aktiengesellschaft Melt metallurgical plant
DE102010041209A1 (en) 2010-09-22 2012-03-22 Siemens Aktiengesellschaft Preheating device for steel scrap and metallurgical melting vessel equipped therewith
IT1401968B1 (en) * 2010-09-24 2013-08-28 Properzi MELTING AND REFINING PLANT FOR NON-FERROUS METALS IMPURES, PARTICULARLY COPPER AND / OR IMPURO COPPER SCRAP FROM MINERAL PROCESSING.
EP2546592B1 (en) 2011-07-12 2015-03-11 SMS Concast Italia S.p.A. Device for transferring a metallurgical material
DE102013214775B3 (en) * 2013-07-29 2014-11-20 Siemens Vai Metals Technologies Gmbh Device for loading a metallurgical melting vessel with scrap
CN103697710B (en) * 2013-12-25 2015-12-16 江苏盛凯环保工程有限公司 Vehicular waste material preheating device
CN103954133B (en) * 2014-02-11 2016-05-25 河南太行全利重工股份有限公司 A kind of middle frequency furnace reinforced device of fluxing continuously
EP2982922A1 (en) * 2014-08-08 2016-02-10 Primetals Technologies Austria GmbH Device and method for controlling a retention unit of a shaft arrangement of a smelting furnace
CN104792171A (en) * 2015-04-30 2015-07-22 黄荣泉 Automatic door feeding device for aluminum melting furnace
CN106052385A (en) * 2016-05-30 2016-10-26 合肥雄川机械销售有限公司 Furnace inlet tank of aluminum melting furnace for aluminum agricultural machines
DE102017124108A1 (en) * 2017-10-17 2019-04-18 Inteco Melting And Casting Technologies Gmbh Scrap preheating device for a melting furnace and method for scrap preheating
CN108639589A (en) * 2018-06-15 2018-10-12 衡东县中湖包装有限公司 A kind of hot melt hopper
CN109355066A (en) * 2018-12-04 2019-02-19 中冶焦耐(大连)工程技术有限公司 Single-bucket trolley for residual coal single-bucket elevator
US20240035102A1 (en) * 2019-09-10 2024-02-01 Jfe Steel Corporation Method for producing molten iron using electric furnace
CN112680563B (en) * 2020-12-30 2022-05-24 辽宁科大科信电力电子有限公司 High-efficiency preheating system for metallization furnace material and dynamic control method
CN115261547B (en) * 2021-04-30 2024-05-14 宝山钢铁股份有限公司 Method, device, system and storage medium for determining optimal scrap preheating temperature
DE102021121472A1 (en) 2021-08-18 2023-02-23 Sms Group Gmbh Electric arc furnace, method of operating an electric arc furnace and use of an electric arc furnace
CN114054435B (en) * 2021-10-20 2023-04-11 浙江弘汇钢管制造有限公司 Steel pipe preheating device with dewatering and dedusting functions
CN114264160B (en) * 2021-12-17 2024-07-30 湖南中科电气股份有限公司 Scrap steel preheating system and preheating method by utilizing hot waste gas
CN114774625B (en) * 2022-05-10 2024-04-09 湖南华菱涟源钢铁有限公司 Method for preheating and melting scrap steel step by step
CN118773398B (en) * 2024-09-12 2024-12-24 河南威猛振动设备股份有限公司 Process for quickly adding scrap steel after furnace, scrap steel feeding equipment and feeding method

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EP0167915B2 (en) * 1984-06-29 1991-11-13 Daido Tokushuko Kabushiki Kaisha Reactor iron making
JPS62174315A (en) * 1986-01-27 1987-07-31 Daido Steel Co Ltd Production of steel ingot
DE3713369A1 (en) * 1987-04-21 1988-11-10 Kortec Ag CHARGING MATERIAL PREHEATER FOR PREHEATING CHARGING MATERIAL FROM A METALLURGICAL MELTING UNIT
JPH07190629A (en) * 1993-04-15 1995-07-28 Ishikawajima Harima Heavy Ind Co Ltd Scrap material preheating charging device
CN2177925Y (en) * 1993-12-09 1994-09-21 石家庄市阀门一厂 High-temp. pot-string type waste steel preheating device
JP3826454B2 (en) * 1996-09-17 2006-09-27 大同特殊鋼株式会社 Electric furnace scrap furnace top preheater

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010111779A2 (en) * 2009-04-02 2010-10-07 Hatch Ltd. Dust collection system for calcine transfer container
WO2010111779A3 (en) * 2009-04-02 2011-01-27 Hatch Ltd. Dust collection system for calcine transfer container
US8298476B2 (en) 2009-04-02 2012-10-30 Hatch Ltd. Dust collection system for calcine transfer container
WO2013132306A1 (en) 2012-03-09 2013-09-12 Danieli & C. Officine Meccaniche Spa Apparatus and method to feed and preheat a metal charge to a melting furnace
EP4509789A1 (en) * 2023-08-17 2025-02-19 Zhejiang Hailiang Co., Ltd. Charging apparatus for a furnace
US11971218B1 (en) 2023-09-01 2024-04-30 Zhejiang Hailiang Co., Ltd. Automatic charging apparatus for a furnace

Also Published As

Publication number Publication date
AR014040A1 (en) 2001-01-31
KR19990045642A (en) 1999-06-25
WO1999028513A1 (en) 1999-06-10
JPH11223474A (en) 1999-08-17
AU1875699A (en) 1999-06-16
SK163498A3 (en) 1999-06-11
CN1102662C (en) 2003-03-05
TR199802446A2 (en) 1999-06-21
CN1224064A (en) 1999-07-28
ID21733A (en) 1999-07-15
CZ388998A3 (en) 1999-11-17
ATE224461T1 (en) 2002-10-15
AU9405698A (en) 1999-06-17
EP1034313A1 (en) 2000-09-13
PL329962A1 (en) 1999-06-07
ZA9810618B (en) 1999-06-24
CA2222401C (en) 2002-09-17
UA49016C2 (en) 2002-09-16
TR199802446A3 (en) 1999-06-21
AU747445B2 (en) 2002-05-16
DE59805641D1 (en) 2002-10-24
EP1034313B1 (en) 2002-09-18

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Effective date: 20171127