WO2003095685A1 - Chargeur de dechets - Google Patents

Chargeur de dechets Download PDF

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Publication number
WO2003095685A1
WO2003095685A1 PCT/IB2002/003658 IB0203658W WO03095685A1 WO 2003095685 A1 WO2003095685 A1 WO 2003095685A1 IB 0203658 W IB0203658 W IB 0203658W WO 03095685 A1 WO03095685 A1 WO 03095685A1
Authority
WO
WIPO (PCT)
Prior art keywords
scrap
bunker
electric arc
furnace
arc furnace
Prior art date
Application number
PCT/IB2002/003658
Other languages
English (en)
Other versions
WO2003095685A9 (fr
Inventor
Michael J. Stercho
Original Assignee
Sms Demag Ag
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 Sms Demag Ag filed Critical Sms Demag Ag
Priority to PCT/IB2002/003658 priority Critical patent/WO2003095685A1/fr
Publication of WO2003095685A1 publication Critical patent/WO2003095685A1/fr
Publication of WO2003095685A9 publication Critical patent/WO2003095685A9/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • 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
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/527—Charging of the electric furnace
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/527—Charging of the electric furnace
    • C21C2005/5276—Charging of the electric furnace with liquid or solid rest, e.g. pool, "sumpf"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
    • F27B3/065—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement tiltable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/12—Working chambers or casings; Supports therefor
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D2099/0085—Accessories
    • F27D2099/0098—Means for moving the furnace
    • 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
    • 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

Definitions

  • the present invention relates to a scrap charging apparatus for an electric furnace used in a steel making process and more
  • furnace particularly in an electric arc furnace, may be carried out by the use of
  • the conveyors require a continuous presence along a usually extensive course of travel by the scrap.
  • Conveyors must be of a heavy duty construction to rapidly transport the scrap need for a service charge and also to withstand the intense heat flowing from the top of the furnace.
  • a scrap charging apparatus for an electric arc furnace, the apparatus including the combination of a scrap holding bunker having diverging end walls extending between converging side walls, the scrap burden along boundaries formed by the diverging end walls providing an impetus in the bunker for scrap flow to an underlying scrap delivery chute, the scrap delivery chute defining an elongated scrap carrying trough having a greater width than the exit width of the scrap holding bunker for delivering scrap to a
  • a ram controlled by a drive to incrementally advance scrap along the scrap delivery chute for introducing successive preselected volumes of scrap to a charging opening for an electric arc furnace, and a conveyor for supplying scrap to the scrap holding bunker.
  • Figure 1 is a front elevational view of an electric arc furnace
  • Figure 2 is a plan view of the electric arc furnace installation shown in Figure 1;
  • Figure 3 is a side elevational view taken along lines III-III of Figure 2;
  • Figure 4 is a sectional view taken along lines IV-IN of Figure 3;
  • Figure 5 is a plan view taken along lines N-V of Figure 3;
  • Figure 6 is a sectional view taken along lines VI- VI of Figure 5;
  • Figure 7 is a sectional view taken along lines VII- VII of Figure 3 ;
  • Figure 8 is a schematic illustration of a hydraulic control circuit for the scrap charging ram.
  • Figure 9 is a elevational view taken along lines IX-IX of Figure 2.
  • the furnace facility includes an electric arc furnace 10 formed by a lower furnace shell 12, an upper furnace shell 14 and a furnace roof 16.
  • the furnace roof 16 includes roof panels formed by an array of side-by-side coolant pipes with the coolant passageways communicating with annular upper and lower water supply headers 20 and 22, respectively, interconnected by radial distributing pipes to form a water circulating system communicating with service lines 24 containing water supply and return lines.
  • the service lines 24 include flexible sections to avoid the need to disconnect the service lines when it is desired to lift the furnace roof alone or combined with the upper furnace shell a short distance, e.g., 24 inches, for servicing the lower furnace shell.
  • the upper water supply header 20 encircles a triangular array of three apertures in a roof insert 30.
  • the apertures are dimensional and arranged to accept the phase A, B and C electrodes 32, 34 and 36 carried by electrode support arms 38, 40 and 42, respectively.
  • Each of the electrode support arms is independently positioned vertically by a support post 44 restrained by horizontally spaced guides 46 in a superstructure for vertical displacement by actuator 48 typical in the form of piston and cylinder assembly.
  • the electrode support arms also support water cooled cables for transmission of electrical current from transformers in a transformer vault 50 to the respective phase A, B and C electrodes.
  • a fume duct 52 extends vertically from an annular opening in the furnace roof 16 between the upper and lower water supply headers 20 and 22 for exhausting the fume from the interior of the furnace to an enlarged and vertically spaced overlying duct 54 formed by water coolant piping cool the fume and to provide thermal protection.
  • the duct 54 supplies the exhaust fume to an evaporator chamber and filter equipment, not shown, to recover pollutants.
  • the furnace upper shell includes superimposed convolutions of coolant pipe supplied with coolant from spaced apart supply headers that are interconnected by vertical distribution pipes to form a water circulating system communicating with service lines 56 containing water supply and return lines.
  • Metal panels may be supported by the coolant pipe of the furnace roof and the coolant pipe of the furnace upper shell for confinement of the fume to the interiors of these furnace components.
  • the service lines 56 include a flexible section to avoid the need to disconnect the service lines when it is desired to lift the furnace roof combined with the upper furnace shell a short distance, e.g., 24 inches, for servicing the lower shell.
  • the convolutions of coolant pipe are arranged to form an annular shape to the upper furnace shell interrupted by a scrap charge opening 58 in one quadrant of the shell.
  • a slag discharge opening is closed by moveable door 60 supported by the upper furnace shell and extending to a slag discharge trough in the lower furnace shell 12. Slag passes from the furnace along the trough beyond a threshold formed by carbon rod insert 62 which is supported by suitable brackets on the lower furnace shell 12.
  • the scrap charge opening 58 is provided to introduce quantities of scrap at closely spaced apart time intervals throughout the major portion of the furnace operating cycle.
  • Scrap residing in a retractable chute 64 in a constant communication with the interior of the furnace of a scrap charger 66 serves as a media to prevent unwanted escape of the fume from the furnace into the scrap charger.
  • the upper furnace shell 14 includes a circular ring, not shown, forming a lower boundary to the shell except where a gap exists at the slag discharge opening. Apertures in the circular ring are provided at annular spaced locations to receive upstanding locator pins on annular segments at opposite lateral sides of the lower furnace shell 12. These annular ring segments are discontinuous at the slag discharge trough and at a bottom crescent-shaped section protruding in an eccentric fashion from the annular configuration of the overlying upper furnace shell 14.
  • the crescent- shaped bottom section is enclosed by a correspondingly shaped crescent roof section 68.
  • the crescent-shaped roof is formed by a layer of coolant pipes.
  • the crescent- shaped bottom section is used to provide eccentric furnace tapping and is combined with the construction and operation of the lower furnace shell to achieve the benefits of flat bath operation and slag free tapping.
  • the preferred form of the electric arc furnace has a configuration of the refractory face surfaces in the lower furnace shell 12 for supporting a metal charge during refining of a steel heat and providing eccentric bottom tapping of the steel heat.
  • annular side wall section 70 in an area bounded by a diameter 72 with a radius Rl struck from the center of the diameter 72.
  • annular vertical side wall section 70 is bounded by a spherically-dished floor wall section 74 defined by a radius R2 struck form a point along a line defined by intersecting vertical plane 76 containing the center of the diameter 72.
  • Plane 76 is a plane of symmetry of the configuration to the lower furnace shell.
  • a floor wall section 78 begins at a vertical plane containing diameter 72 and proceeds away from the spherically-dished floor wall section 74 by a linear downward-sloping contour along plane 76 with an ever increasing radius of curvature transverse to plane 76 forming a rolled developed plate floor wall
  • liquid metal surface commonly called a hot metal line 84 at the start of tapping a heat.
  • a hot metal line 84 At the conclusion of the tapping of the steel heat, there is a liquid heel line 86 formed by the upper surface of the steel heat and represents a reduction to the liquid
  • the vertical side wall 82 is of maximum height and merges with floor wall section 78
  • the furnace is operated in a
  • the size of the heel at the end of tapping is at least 70% of the tapped heat preferably 100% so that the introduction of scrap into the furnace may be accomplished in an incremental fashion using the thermal energy of the heel and the continuous operation of the electrodes for maintaining flat bath operation.
  • a tap hole gate not shown, is positioned to close off the bottom of the tap hole assembly.
  • An emergency tap hole closure assembly 96 is shown in Figure 6 in the event the tap hole gate malfunctions.
  • rails 98 extend along opposite sides for the rails of the transfer car for the ladle 90.
  • the rails 98 support a furnace transfer car 100 used to support the lower furnace shell and the
  • the furnace transfer car is
  • the furnace remains statically positioned throughout repetitive furnace operating cycles at the furnace operating position 102.
  • the charging of scrap therefor is preferably accomplished by the introduction of scrap through the side wall of the upper furnace shell although the scrap charger of the
  • present invention is equally useful to charge scrap into an electric arc furnace that tilts
  • charging maybe accomplished through the top of the furnace exposed by removal of the furnace roof.
  • charger 66 according to the preferred form of the present invention includes a scrap
  • each scrap box is mounted by pivot shaft 112 to the scrap charging car and a piston and cylinder assembly 114 mounted on the car and joined with the respective scrap boxes by a clevis mounting for tilting a scrap box to
  • a winch 120 is provided drum portion cables connected to the skip hoist car 116 draws the car laden
  • bunker 126 The bunker is supported by a super structure 127 to extend to an elevation laterally spaced from the scrap charging opening 58 in the electric furnace.
  • the volume of scrap in scrap holding bunker is contained by diverging end walls 128 and 130 extending between opposed side walls that 132 and 134 converge in the direction toward a bunker discharge opening 136.
  • the bunker side wall 128, 130, 132 and 134 support an overlying scrap guide section 138.
  • the converging side wall 132 and 134 each have pairs of upper and lower scrap shover rams 140 and 142, respectively.
  • Each scrap shover ram is guided by a guide trough 144 angularly positioned in the respective side walls of the bunker and advanced from a start position to a scrap engaging position where the ram juts from the guide trough in response to operation of a piston and cylinder assembly 148.
  • the lower pairs of rams 142 in each side wall are interconnected by a plate 146 to increase the working area of the scrap shover rams.
  • the flow of scrap in the bunker is monitored by a video camera 150.
  • the diverging end wall provides an impetus for scrap flow in the bunker to an underlying scrap delivery chute 152 which as shown in Figures 4, 5 and 7 have side walls 154 spaced apart at a distance which is greater than the width of the bunker discharge opening 136 of the bunker to promote scrap flow into the delivery chute.
  • the chute is closed by an upwardly diverging top wall section 155 extending between diverging end wall 130 of the bunker and retractable chute 64.
  • the delivery chute further includes a downward diverging continuous floor wall 156 supported by spaced apart cradle supports 157.
  • the cradle support includes a transverse carrier beam 158 joined with post members 160 extending from the floor upwardly along the side walls 154 to a point where a cross beam 162 interconnects the post members 160 and provides a stable cradle support structure.
  • the elevations of the transverse carrier beams 158 change at each support site along the length of the chute 152 thereby positioning the chute in a downwardly angled fashion so that gravity contributes to scrap flow along the chute.
  • a top wall section 164 closes off the top of the chute between the diverging end wall 128 of the scrap holding bunker 128 to the remote end of the chute where an upstanding anchor 166 is provided with a clevis mounting for supporting the cylinder member of a piston and cylinder assembly 168.
  • the rod end of the piston and cylinder assembly 168 is mounted to a pusher block 170 and forming an end wall to a pusher ram 172 made up of side walls, top walls and floor walls surrounding the entire length of the piston and cylinder assembly 168.
  • the pusher ram is incrementally advanced along the scrap delivery chute 152 to advance a predetermined volume of scrap into the furnace. Scrap is charged into the furnace at closely space intervals commencing with the end of the tapping of a heat and extending to a short period, e.g., three minutes, before tapping of the next heat.
  • the static placement of the furnace throughout consecutive operating cycles allows the retractable chute 64 to extend through the charging open 58.
  • the rod ends of piston and cylinder assemblies 174 are mounted on the retractable chute.
  • the cylinder members of the piston and cylinder assemblies 174 are mounted on the top wall 155 and floor wall 156 of the chute.
  • the piston and cylinder assemblies 174 are operated when it is desired to withdraw the chute 164 from the charging opening such as for moving the lower or upper and lower furnace shells to the furnace exchange position 104.
  • the piston and cylinder assemblies 174 position the retractable chute to project into the furnace by a distance sufficient so that the chute traverses the refractory forming the vertical wall in the lower furnace shell.
  • the retractable chute is constructed from convolutions of coolant pipes joined together in an edge-to-edge relation. Coolant water is continually circulated through the pipes to prevent destruction while residing in the highly heated environment in the furnace.
  • the extent to which the chute projects into the furnace is selected to assure scrap will fall directly into the liquid metal bath and not impact with the refractory of the side wall. Further, the volume of scrap introduced during each push cycle by the ram is predetermined to prevent damaging impact with electrodes 32, 34 and 36 and maintain flat bath operation by the furnace.
  • Figure 8 schematically illustrates a control for the piston and cylinder assembly 168 and includes limit switches LSI, LS2, LS3 . . . LSN placed at equally spaced intervals along the side wall 154 of the underlying scrap delivery chute 152 within boundaries formed by the diverging end wall 128 and 130 of the scrap storage bunker.
  • a signal provided by the limit switches is delivered to an actuator 176 for a hydraulic control valve 178 supplied with pressurized hydraulic fluid from a reservoir 180 by a motor driven pump 182. The distance separating the limit switches forms the incremental length "L" of an individual scrap charge.
  • the length "L” is always less than the distance "X" corresponding to the linear length of the fall space between the end of the moveable chute in the furnace and the vertical wall of an electrode most adjacent the chute as shown in Figure 3. While the limit switches LSI, LS2, LS3 . . . . LSN have been selected for the purpose of detecting the advanced positions of the rams, other devices maybe used for this purpose without departing from the present invention.
  • One such form of another device is a detector responsive to displacement of a linear scale by movement of the ram 170.
  • the ram has an elongated length sufficient to traverse the distance between the end walls 128 and 130 of the scrap holding bunker 126.
  • the ram When the pusher block 170 passes beyond wall 130, the ram is retracted to a start position residing below roof 157 to allow scrap to flow into the chute from the overlying bunker. In the unlikely event of a blockage to the downward migration of the scrap, one axis more of the piston and cylinder assemblies 148 are operated to cause the associated scrap shover rams to supply forces to the mass of the scrap and restart flow due to gravity.

Abstract

La présente invention concerne un appareil de chargement de déchets conçu pour un four à arc électrique et doté d'un skip permettant d'alimenter en déchets une trémie de retenue ayant des parois terminales divergentes s'étendant entres des parois latérales convergentes. L'espace de confinement pour les déchets est augmenté par cet agencement de parois et il génère une impulsion dans la trémie permettant ainsi aux déchets de s'écouler vers une goulotte de transfert des déchets sous-jacente. Cette goulotte de transfert des déchets est formée par une auge allongée de transport des déchets possédant une largeur supérieure à la largeur de l'orifice de sortie de la trémie de retenue des déchets de manière à transférer les déchets vers une ouverture de chargement d'un four à arc électrique. Une superstructure supporte la trémie de retenue des déchets en un emplacement élevé et latéralement à une certaine distance du four à arc électrique. Un piston-poussoir commandé par une unité d'entraînement fait avancer de manière incrémentale les déchets le long de la goulotte de transfert des déchets aux fins de l'introduction de volumes présélectionnés successifs de déchets dans une ouverture de chargement associée à un four à arc électrique.
PCT/IB2002/003658 2002-05-10 2002-05-10 Chargeur de dechets WO2003095685A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2002/003658 WO2003095685A1 (fr) 2002-05-10 2002-05-10 Chargeur de dechets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2002/003658 WO2003095685A1 (fr) 2002-05-10 2002-05-10 Chargeur de dechets

Publications (2)

Publication Number Publication Date
WO2003095685A1 true WO2003095685A1 (fr) 2003-11-20
WO2003095685A9 WO2003095685A9 (fr) 2011-12-29

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ID=29415744

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/003658 WO2003095685A1 (fr) 2002-05-10 2002-05-10 Chargeur de dechets

Country Status (1)

Country Link
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20110216A1 (it) * 2011-12-29 2013-06-30 Danieli Automation Spa Dispositivo e procedimento per il controllo della carica in forni elettrici ad arco
WO2013102490A1 (fr) * 2012-01-03 2013-07-11 Abb Research Ltd Procédé de fonte d'acier
ITUD20130052A1 (it) * 2013-04-23 2014-10-24 Danieli Off Mecc Procedimento per la fusione di materiale metallico in un impianto di fusione e relativo impianto di fusione
US10234204B2 (en) 2012-01-23 2019-03-19 Danieli Automation Spa Method for managing the charge in a melting furnace and corresponding loading apparatus
CN112501381A (zh) * 2020-11-10 2021-03-16 黄涛 一种炼钢用原料连续持续周期性定时加料机构
CN112665385A (zh) * 2020-12-29 2021-04-16 湖北新金洋资源股份公司 一种便于投料的加料平台

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225745A (en) * 1978-09-05 1980-09-30 Harwell Earnest W Method for charging small particles of iron or steel directly into molten metal in an arc furnace
DE3212700A1 (de) * 1981-04-15 1982-11-04 Hylsa S.A., Monterrey, N.L. Apparat zum trennen eines agglomerierten partikulierten materials
US6024912A (en) * 1997-11-27 2000-02-15 Empco (Canada) Ltd. Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases
DE19902438A1 (de) * 1999-01-22 2000-07-27 Sms Demag Ag Vorrichtung zum Vorwärmen von Schrott
DE19956578A1 (de) * 1999-11-25 2001-05-31 Sms Demag Ag Verfahren und Vorrichtung zum Vorwärmen und zum kontinuierlichen Einbringen einer Charge in einen Elektrolichtbogenofen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225745A (en) * 1978-09-05 1980-09-30 Harwell Earnest W Method for charging small particles of iron or steel directly into molten metal in an arc furnace
DE3212700A1 (de) * 1981-04-15 1982-11-04 Hylsa S.A., Monterrey, N.L. Apparat zum trennen eines agglomerierten partikulierten materials
US6024912A (en) * 1997-11-27 2000-02-15 Empco (Canada) Ltd. Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases
DE19902438A1 (de) * 1999-01-22 2000-07-27 Sms Demag Ag Vorrichtung zum Vorwärmen von Schrott
DE19956578A1 (de) * 1999-11-25 2001-05-31 Sms Demag Ag Verfahren und Vorrichtung zum Vorwärmen und zum kontinuierlichen Einbringen einer Charge in einen Elektrolichtbogenofen

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104204702B (zh) * 2011-12-29 2016-06-08 达涅利自动化有限公司 用于控制电弧炉中的炉料的装置和方法
WO2013098636A1 (fr) * 2011-12-29 2013-07-04 Danieli Automation Spa Dispositif et procédé pour la commande de la charge dans des fours à arc électrique
ITUD20110216A1 (it) * 2011-12-29 2013-06-30 Danieli Automation Spa Dispositivo e procedimento per il controllo della carica in forni elettrici ad arco
CN104204702A (zh) * 2011-12-29 2014-12-10 达涅利自动化有限公司 用于控制电弧炉中的炉料的装置和方法
WO2013102490A1 (fr) * 2012-01-03 2013-07-11 Abb Research Ltd Procédé de fonte d'acier
US9045810B2 (en) 2012-01-03 2015-06-02 Abb Research Ltd. Method for melting steel
US10234204B2 (en) 2012-01-23 2019-03-19 Danieli Automation Spa Method for managing the charge in a melting furnace and corresponding loading apparatus
ITUD20130052A1 (it) * 2013-04-23 2014-10-24 Danieli Off Mecc Procedimento per la fusione di materiale metallico in un impianto di fusione e relativo impianto di fusione
CN105612398A (zh) * 2013-04-23 2016-05-25 达涅利机械设备股份公司 在熔化设备中熔化金属材料的方法以及相关的熔化设备
CN105612398B (zh) * 2013-04-23 2018-01-19 达涅利机械设备股份公司 在熔化设备中熔化金属材料的方法以及相关的熔化设备
WO2014174463A3 (fr) * 2013-04-23 2015-02-26 Danieli & C. Officine Meccaniche Spa Procédé de fusion de matière métallique dans une installation de fusion, et installation de fusion correspondante
US10801083B2 (en) 2013-04-23 2020-10-13 Danieli & C. Officine Meccaniche Spa Method for melting metal material in a melting plant and relative melting plant
CN112501381A (zh) * 2020-11-10 2021-03-16 黄涛 一种炼钢用原料连续持续周期性定时加料机构
CN112665385A (zh) * 2020-12-29 2021-04-16 湖北新金洋资源股份公司 一种便于投料的加料平台

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