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EP0456641A1 - Procede permettant d'eviter la formation de gaz de fumee lors de processus metallurgiques et du transport de metaux fondus d'un recipient metallurgique a des recipients de coulee et dispositif de transport de metaux fondus d'un four metallurgique a un recipient de coulee. - Google Patents

Procede permettant d'eviter la formation de gaz de fumee lors de processus metallurgiques et du transport de metaux fondus d'un recipient metallurgique a des recipients de coulee et dispositif de transport de metaux fondus d'un four metallurgique a un recipient de coulee.

Info

Publication number
EP0456641A1
EP0456641A1 EP90900762A EP90900762A EP0456641A1 EP 0456641 A1 EP0456641 A1 EP 0456641A1 EP 90900762 A EP90900762 A EP 90900762A EP 90900762 A EP90900762 A EP 90900762A EP 0456641 A1 EP0456641 A1 EP 0456641A1
Authority
EP
European Patent Office
Prior art keywords
transport
liquid metal
inert gas
metallurgical
channel
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
EP90900762A
Other languages
German (de)
English (en)
Other versions
EP0456641B1 (fr
Inventor
Haas Hans De
Klaus Ulrich
Klaus Gruetzmacher
Erhard Krause
Horstmar Mohnkern
Manfred Loewenstein
Manfred Voss
Joachim Witt
Uwe Hammer
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.)
Kloeckner Stahl GmbH
Original Assignee
Kloeckner Stahl GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27434502&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0456641(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE3903444A external-priority patent/DE3903444C1/de
Priority claimed from DE3929328A external-priority patent/DE3929328A1/de
Priority claimed from DE3930729A external-priority patent/DE3930729A1/de
Priority claimed from DE19893933894 external-priority patent/DE3933894A1/de
Application filed by Kloeckner Stahl GmbH filed Critical Kloeckner Stahl GmbH
Priority to AT90900762T priority Critical patent/ATE89865T1/de
Publication of EP0456641A1 publication Critical patent/EP0456641A1/fr
Application granted granted Critical
Publication of EP0456641B1 publication Critical patent/EP0456641B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D45/00—Equipment for casting, not otherwise provided for
    • B22D45/005—Evacuation of fumes, dust or waste gases during manipulations in the foundry
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/30—Arrangements for extraction or collection of waste gases; Hoods therefor

Definitions

  • the invention relates to a method for avoiding the generation of the flue gases in metallurgical processes and in the transport of liquid metal from a metallurgical vessel, in particular metallurgical furnace such as a blast furnace, into casting vessels.
  • the invention further relates to a device which comprises at least one transport and drainage channel installed at a tap opening of a metallurgical furnace and a transfer station with a swivel or tilting channel in which the liquid metal runs from the drainage channel via a distributor system into outlet openings, from which it runs into a preferably mobile pouring vessel.
  • the smoke gas is already generated from the outset with every driving step or prevented in any device in which or in which the presence of oxygen is not absolutely necessary.
  • metal oxides eg "brown smoke”
  • sulfur oxidation of other substances contained in the liquid metal, such as sulfur
  • liquid metal also includes the slag which often occurs in metallurgical processes and which can occur in batches or in separate layers together with the liquid metal.
  • the covering hoods must be arranged to be movable in the region of the tap opening, ie to be pivotable or foldable away from the drainage channel.
  • the inerting gas can be introduced in such a way that it can simultaneously serve for cooling areas which are subject to high thermal stress.
  • the shielding of the liquid metal flow in the transport channels is solved in that the channels are covered by hoods, the introduction of inert gas serving to simultaneously cool the hoods.
  • Another point of concern is the transfer point of the liquid metal from the transport trough into the inlet opening of the pouring vessel.
  • the metal coming from the transport trough first encounters a swivel or tilting trough in free fall, preferably via a distribution trough and an outlet trough opening and flows through this into the pouring vessel, for example a torpedo pan or a transport vessel.
  • the transfer point is largely gas-tightly shielded from the outside by a housing, the interior in question can thus be effectively rendered inert with inert gas, in particular nitrogen.
  • the housing of the transfer point considerably minimizes the space that has to be flushed with inert gas.
  • the otherwise economically unacceptable pressure nitrogen or inert gas injection is limited to a small area, namely that from the end of the transport trough to the outlet opening into the pouring vessel, for example a pan or a torpedo car.
  • the transfer station is equipped with a preferably movable cover.
  • the swivel or tilting channel is cooled by the same inert gas during the liquid metal flow, with which the inerting in the interior formed by the shield is also ensured.
  • the inert gas is preferably blown below the shield against the wall of the swivel or tilting channel.
  • the liquid metal discharge jet is shielded from the air inlet by an inert gas jacket.
  • This inert gas jacket is created by a preferably ring-shaped spraying of inert gas under pressure, preferably 1.5 bar, so that an inert gas curtain enveloping the liquid jet is obtained.
  • mostly "bearish" deposits at the inlet openings of the pouring vessels are a hindrance, making gas-tight fitting of the tube onto such an inlet opening impossible.
  • the inert gas curtain instead of the enveloping inert gas curtain, only metallic chains, strips or the like are available, which, however, are disadvantageously displaceable against one another and there, in particular due to the thermals prevailing during the casting, provide an airtight seal. complicate in the end.
  • the inert gas additionally serves as a cooling medium for the outlet opening.
  • the interior of the pouring vessel is largely kept under inert gas by introducing inert gas, preferably through inlet openings in the vessel jacket, in order to prevent metal oxidation there as well.
  • inert gas emerging from the pouring vessel filling opening for the liquid metal supports the described shielding effect of the ring-shaped inert gas curtain for the liquid metal jet.
  • the inerting of the pouring vessel should preferably begin before the first entry of liquid metal.
  • either nitrogen or a gas whose free oxygen content has been consumed by combustion in a combustion chamber can be used as the inert gas.
  • the resulting now inert exhaust gas which e.g. can be achieved by burning natural gas, is cooled before being introduced into the rooms mentioned.
  • the above-described transfer point of the liquid detail from the transport channel still has a relatively large-volume housing in which a tilting or pivoting channel is arranged.
  • a tipping trough is a trough arrangement in which the pig iron coming from a trough is guided into various pouring vessels via a trough that can be tilted about a horizontal axis.
  • a swivel trough is a trough arrangement in which the pig iron coming from a trough is directed onto a trough which can be swiveled or rotated about a vertical axis, from which it is fed directly into the pouring vessels from a plurality of individual troughs or via an underlying distribution system becomes.
  • the tilting or swiveling trough is covered over its respective channel part lengths to form the smallest possible free interior space, ie, the liquid metal does not flow through, the tipping or swiveling trough having outlet openings of funnel-shaped design, on which annular pressure gas nozzles or pressure gas nozzle rings are arranged on the end face.
  • the channel area of the tilting or swiveling channel is thus covered as well as the transport or drainage channels.
  • the end-side funnel-shaped configurations of the tilting or swiveling channels serve to fasten the ring-shaped pressurized gas nozzles or the pressurized gas nozzle rings to form an inert gas antel ⁇ around the liquid metal jet running there. Further holders for the annular nozzle or the nozzle ring can thus preferably be dispensed with.
  • the outlet funnel is arranged at the angle of inclination or tipping of the tilting or swiveling trough, with which the inert gas jacket diameter can be minimized.
  • the arrangement is such that the annular pressure nozzle plane or the plane determined by the pressure nozzle ring is essentially horizontal in the pouring position.
  • the lid or lids preferably form a closed, largely gas-tight housing together with the tilting or swiveling channel, so that liquid metal can flow through them.
  • This interior is rendered inert by a suitable gas such as nitrogen.
  • the lid can be detached from the tilting or swiveling channel, in particular for cleaning or repair work, preferably the lid can be pivoted away, for example attached to the tipping or swivel trough via a hinge.
  • the transfer point of the liquid metal from the transport channel into the inlet opening is in a pit, the following solution is particularly suitable for retrofitting relevant transfer points.
  • the housing of the transfer station consisting of a stationary lower part and the cover is provided with a displaceable upper part, which Avoiding major disassembly work. In this way, relatively long downtimes, which are at the expense of the productivity of the entire device, are avoided.
  • the upper part of the housing preferably consists of a frame with at least three wheels and a cover.
  • the mobility of the upper part on wheels saves the otherwise required use of appropriately loadable lifting equipment and considerably minimizes the need for cranes.
  • the stationary lower part of the housing is arranged as a boundary of a pit and has side rails for two of the wheels of the frame frame of the upper part.
  • the swivel or tilting channel and the transfer funnel are located in this pit. Due to the movability of the upper part, ie the frame and the cover, it is no longer necessary to have the stationary lower part for inspection work on one of the end faces To provide swing doors or similar closable openings. The inspection can take place after opening, ie moving the lid over the limitation of the stationary lower part.
  • the frame is preferably mounted so that it can be moved horizontally on three wheels, two wheels running on the travel rails arranged on the side of the pit, the third wheel running on a parallel one and to the side ones Rails are staggered rails that lead to one end of the pit. This saves a rail track of approximately the length that the pit has.
  • the frame including the cover is moved in a corresponding manner over the face of the pit. The space required to the side of the pit and the length of the third travel rail are to be selected in accordance with the length of the frame or the pit.
  • the lid is roof-shaped, i.e. essentially triangular in cross-section and detachable from the frame.
  • the cover is preferably provided with a sealing strip which closes the gap between the cover and the lower housing part.
  • a sealing strip which closes the gap between the cover and the lower housing part.
  • the receiving device for the cover hoods is made rotatable about a vertical axis with respect to the lifting device. This can be done, in particular, in that the receiving device is connected to the lifting device via a rotary ball connection and is driven via a gear rack toothing.
  • the receiving device preferably has fastening elements which enable the cover hoods to be set down and taken up on or off uneven ground, in particular a sand bed, without torque.
  • Shackles for example, are suitable for this purpose as fastening elements.
  • the lifting device should have a torque-stable guide for absorbing unilateral moments with uneven loading, so that a "tilting" of the covering hoods can be avoided, for example, if they have bearded deposits on the Seine.
  • the lifting device can be raised and lowered via a cable pull, preferably a bottle cable pull, with the cable guide also being elastically mounted at the attachment point (fixed point) via a plate spring arrangement.
  • the rotational mobility of the vertical column is also brought about by a drive train drive.
  • Copier units are preferably used to monitor the current movement sequences or positions of the vertical column and / or the lifting device.
  • the lifting device is permanently connected to the relevant covering hood for the drainage channel at the tap hole, it is also advisable to attach an inert gas pipeline with pipe swivel joints to the lifting device, the free end of the pipe preferably being a part a quickly releasable coupling for coupling to the covering hood equipped with the corresponding part. Should they . Covers are cooled, it is advisable to provide a pipeline for the cooling medium.
  • FIG. 3 shows a top view of the housing according to FIG. 2 in the half-open position
  • FIG. 5 is a plan view of a tipping trough
  • Fig. 6 is a side view
  • FIG. 7 shows a plan view of a swivel-lifting device.
  • the blast furnace 10 shown in FIG. 1 has three tap holes 11, 12 and 13, of which drainage channels 14, 15 and 16 lead to respective transfer stations 17, 18 and .IS, below which movable pouring vessels 20 and 21 (FIG. 2 ) are arranged for taking up liquid metal.
  • An essential feature of the device according to the invention in the tapping area are the cover hoods 22, 23 and 24 which can be acted upon with inert gas and which in the area of the respective tapping hole 11 to 13 with the aid of the Swivel devices 25, 26 and 27 are pivotally arranged.
  • the pig iron is guided to the relevant transfer stations 17, 18 and 19 in the respectively covered and rendered inert drainage channels 14, 15 and 16.
  • the liquid metal preferably runs from the drainage channels to swivel channels 28, 29 and 30, which are furthermore preferably cooled laterally by the flow of the inerting gas.
  • the liquid metal is preferably conducted via distributor channels 31 and 32 (FIG. 2) to the respective outlet openings 33 and 34.
  • the entire transfer stations are encased in housings 35 and 36; the cover structure 36, which will be discussed later, can be moved horizontally.
  • the liquid metal jet 37 emerges below the casting platform from the outlet opening 33, which is enclosed by the annular nozzle 38. This envelops the liquid metal jet with the inert gas curtain 39 until it enters the upper opening 40 of the pouring vessels 20 or 21.
  • the interior of the pouring vessel is charged with inert gas before and during the filling through preferably one or more inlet openings 41 and 42 located in the vessel jacket.
  • All gas nozzles are connected to gas supply systems 43, 44, 45 and are supplied with nitrogen via pressure valves 46, 47 and 48.
  • the inventive principle can also be used in so-called tipping troughs, in which it is necessary to preferably house or cover the tipping trough, which will be discussed later, and to keep the interior of the housing under a largely inert atmosphere with a slight overpressure.
  • the inventive principle can be applied to slag transport channels.
  • the swivel channel 29 and the distributor channels 31 and 32 are located within a pit 52 which is delimited on both sides by rails 53 and 54.
  • a third rail 55 is arranged parallel to the above-mentioned rails 53 and 54 from the end face 52 'of the pit.
  • the upper part consisting of a frame 35 and a cover 36 is movably supported on the above-mentioned rails 53 to 55 via wheels 49 to 51.
  • the rail 55 is embedded in the casting hall floor 56.
  • the rails 53 and 54 are arranged on the lower part of the housing of the pit 52.
  • the cover 36 is also provided with a sealing strip 57 which closes the gap 58 between the cover 36 and the stationary lower part 59.
  • a tilting channel 60 shown in FIGS. 4 and 5 is used, then the aforementioned housing can be dispensed with.
  • the tipping channel 60 has discharge funnels 61 and 62 at the end, on the end face of which a compressed gas nozzle ring 63, 64 is arranged.
  • the outlet channel 65 with the channel longitudinal axis 655 is also arranged at the same angle ⁇ with respect to the Kipprinnen ⁇ vertical. This means that the compressed gas nozzle ring 63 or 64 is horizontal in the outlet position (see FIG. 4, left side).
  • the tipping channel 60 is covered by one or more covers 67 to form the smallest possible interior 68.
  • the covers 67 are detachable, preferably pivotally attached to the tipping channel 60.
  • One or more inert gas nozzles 69 are provided on the underside of the lid for inerting the interior 68 above the liquid metal level (not shown) in the tilting channel.
  • the inert gas nozzles 69 like the compressed gas supply 66, can be supplied by a central control.
  • the swivel-lifting device shown in FIGS. 6 and 7 essentially consists of a vertically arranged column 80 which can be rotated about its longitudinal axis 81.
  • This column is located to the side of the tap opening of a blast furnace, not shown.
  • This column has a cantilever arm 82, at the free end 82a of which a lifting device 73 is arranged, which in the present case consists of a block and tackle.
  • the lifting device serves for lifting and lowering a receiving device 74 for a cover hood 75.
  • This receiving device 74 is connected to the lifting device 73 via a ball-and-socket connection 74a and is driven via a gear rack toothing.
  • Shackles 77 are provided as fastening elements for the cover hood 75 in order to enable the cover hoods 75 to be set down and received on the floor, for example made of sand, without torque. Otherwise, the lifting device 73 is torque-stable, so that, in the event that the cover has bearish extensions on its side, which considerably increase its weight there, there is no tilting of the cover hood.
  • the cover can be brought into any angular position in a horizontal plane (rotation about the vertical axis 76) by means of the rotary ball joint 74a and the drive train drive. A further possibility of rotation about the longitudinal axis 81 of the column exists by means of the drive shaft drive 78 for the vertical column 80. Since a pivoting-lifting device is provided for each tap hole, it is finally recommended to include the inert gas / coolant line as a combined pipeline 79 to connect the device. This pipe 79 has pipe drain joints 79a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Blast Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Une rigole de transport et d'écoulement (14) est installée dans au moins un trou de coulée (11) d'un four métallurgique (10) et une station de transfert (17, 18, 19) comprend une rigole pivotante ou basculante (28, 29, 30) dans laquelle le métal fondu conduit dans la rigole d'écoulement (14) s'écoule à travers un système de distribution dans des orifices de sortie (33, 34) par lesquels il atteint un récipient de coulée (20, 21) de préférence mobile. Le rigoles d'écoulement (14) du métal sont recouvertes par des couvercles (22, 23, 24) depuis le trou de coulée (11) du four métallurgique (10), la station de transfert (17, 18, 19) est blindée de manière étanche aux gaz, les cavités intérieures correspondantes sont rincées avec un gaz inerte et le jet d'écoulement de métal fondu (11, 12, 13) est blindé par une enveloppe supplémentaire, essentiellement annulaire, de gaz inerte sous pression qui empêche l'entrée d'air entre l'orifice de sortie (11, 12, 13) et le récipient de coulée. On évite ainsi de manière efficace la formation de gaz de fumée.
EP90900762A 1989-02-06 1989-12-20 Procede permettant d'eviter la formation de gaz de fumee lors de processus metallurgiques et du transport de metaux fondus d'un recipient metallurgique a des recipients de coulee et dispositif de transport de metaux fondus d'un four metallurgique a un recipient de coulee Expired - Lifetime EP0456641B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90900762T ATE89865T1 (de) 1989-02-06 1989-12-20 Verfahren zur vermeidung der entstehung der rauchgase in metallurgischen prozessen und beim fluessigmetall-transport von einem metallurgischen gefaess in abgiessgefaesse und vorrichtung zum fluessigmetall-transport von einem metallurgischen ofen in ein abgiessgefaess.

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE3903444 1989-02-06
DE3903444A DE3903444C1 (en) 1989-02-06 1989-02-06 Method and apparatus for transporting liquid metal from a metallurgical furnace to a casting vessel
DE3929328 1989-09-04
DE3929328A DE3929328A1 (de) 1989-09-04 1989-09-04 Vorrichtung zum fluessigmetall-transport von einem metallurgischen ofen in ein abgiessgefaess
DE3930729A DE3930729A1 (de) 1989-02-06 1989-09-14 Vorrichtung zum fluessigmetall-transport von einem metallurgischen ofen in ein abgiessgefaess
DE3930729 1989-09-14
DE3933894 1989-10-11
DE19893933894 DE3933894A1 (de) 1989-02-06 1989-10-11 Schwenk-hub-vorrichtung fuer abdeckhauben

Publications (2)

Publication Number Publication Date
EP0456641A1 true EP0456641A1 (fr) 1991-11-21
EP0456641B1 EP0456641B1 (fr) 1993-05-26

Family

ID=27434502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90900762A Expired - Lifetime EP0456641B1 (fr) 1989-02-06 1989-12-20 Procede permettant d'eviter la formation de gaz de fumee lors de processus metallurgiques et du transport de metaux fondus d'un recipient metallurgique a des recipients de coulee et dispositif de transport de metaux fondus d'un four metallurgique a un recipient de coulee

Country Status (15)

Country Link
US (1) US5246485A (fr)
EP (1) EP0456641B1 (fr)
JP (1) JPH04504443A (fr)
KR (1) KR950003158B1 (fr)
AT (1) ATE89865T1 (fr)
AU (1) AU642636B2 (fr)
BR (1) BR8907878A (fr)
CA (1) CA2009309A1 (fr)
CS (1) CS30390A3 (fr)
DE (1) DE58904532D1 (fr)
ES (1) ES2049020T3 (fr)
FI (1) FI96324C (fr)
HU (2) HUT58004A (fr)
MX (1) MX173367B (fr)
WO (1) WO1990008842A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU644694B2 (en) * 1990-10-20 1993-12-16 Klockner Stahl Gmbh Apparatus and method for delivering inert gas into a molten metal transportation vessel
DE4033482C1 (fr) * 1990-10-20 1992-02-20 Kloeckner Stahl Gmbh, 4100 Duisburg, De
FR2691163B1 (fr) * 1992-05-15 1994-08-05 Lorraine Laminage Procede et dispositif d'elimination des fumees produites par oxydation d'un metal en fusion au cours de son deversement dans un recipient metallurgique.
DE19532040C2 (de) * 1995-08-31 1999-05-27 Schloemann Siemag Ag Vorrichtung zum Flüssigmetall-Transport in der Gießhalle eines Schachtofens und Verfahren zum Betrieb dieser Vorrichtung
EP3081658A1 (fr) * 2015-04-17 2016-10-19 Oetinger Aluminium WH GmbH Récipient de transport pour métal liquide et procédé de remplissage d'un récipient de transport de métal liquide
CN110756791A (zh) * 2019-10-30 2020-02-07 首钢水城钢铁（集团）有限责任公司 铁水罐翻盖驱动全自动控制系统
CN116079021B (zh) * 2023-01-17 2025-03-04 中冶赛迪工程技术股份有限公司 一种连铸浇铸区域除尘系统

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1004268A (fr) * 1947-03-27 1952-03-27 Procédé d'affinage, de dégazage et de coulée des métaux et alliages par une atmosphère contrôlée et produits obtenus
US3439735A (en) * 1965-11-19 1969-04-22 Union Carbide Corp Continuous casting apparatus with inert gas protector
SU747613A1 (ru) * 1976-08-23 1980-07-15 Магнитогорский государственный институт по проектированию металлургических заводов Устройство дл защиты струи металла газом
GB1603119A (en) * 1977-11-21 1981-11-18 Lodge Cottrell Ltd Fume containment
US4300753A (en) * 1980-02-21 1981-11-17 Bate Micheal D Hot metal runner system with air pollution controls
US4355788A (en) * 1980-03-24 1982-10-26 Bate Micheal D Hot metal runner system with air pollution controls
US4357003A (en) * 1980-09-24 1982-11-02 Jones & Laughlin Steel Corporation Blast furnace cast house pollutant suppression
GB2095805B (en) * 1981-03-27 1984-09-26 Boswell Alexander Bruce Ducting for drying grain
EP0071359A1 (fr) * 1981-07-23 1983-02-09 Uss Engineers And Consultants, Inc. Procédé et appareil éliminant des émanations gazeuses d'un bain métallique
US4486230A (en) * 1981-07-23 1984-12-04 United States Steel Corporation Method for suppressing fume from a metal pouring operation
LU86648A1 (de) * 1986-11-06 1988-06-13 Wurth Paul Sa Evakuierungsanlage fuer die emanationen im abstichlochbereich von schachtoefen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9008842A1 *

Also Published As

Publication number Publication date
US5246485A (en) 1993-09-21
BR8907878A (pt) 1992-04-14
ATE89865T1 (de) 1993-06-15
AU4815190A (en) 1990-08-24
KR910700356A (ko) 1991-03-14
FI96324C (fi) 1996-06-10
HUT58004A (en) 1992-01-28
EP0456641B1 (fr) 1993-05-26
FI96324B (fi) 1996-02-29
ES2049020T3 (es) 1994-04-01
CS30390A3 (en) 1992-02-19
JPH04504443A (ja) 1992-08-06
MX173367B (es) 1994-02-23
WO1990008842A1 (fr) 1990-08-09
KR950003158B1 (ko) 1995-04-01
DE58904532D1 (de) 1993-07-01
FI913720A0 (fi) 1991-08-05
CA2009309A1 (fr) 1990-08-06
AU642636B2 (en) 1993-10-28
HU210769B (en) 1995-07-28

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