EP0005692B1 - Installation de conversion de métal avec un convertisseur basculant - Google Patents

Installation de conversion de métal avec un convertisseur basculant Download PDF

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Publication number
EP0005692B1
EP0005692B1 EP79890006A EP79890006A EP0005692B1 EP 0005692 B1 EP0005692 B1 EP 0005692B1 EP 79890006 A EP79890006 A EP 79890006A EP 79890006 A EP79890006 A EP 79890006A EP 0005692 B1 EP0005692 B1 EP 0005692B1
Authority
EP
European Patent Office
Prior art keywords
converter
charging
casing
ceiling
crane
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.)
Expired
Application number
EP79890006A
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German (de)
English (en)
Other versions
EP0005692A1 (fr
Inventor
Friedrich Laimer
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.)
Voestalpine AG
Original Assignee
Voestalpine 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
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Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0005692A1 publication Critical patent/EP0005692A1/fr
Application granted granted Critical
Publication of EP0005692B1 publication Critical patent/EP0005692B1/fr
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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
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/38—Removal of waste gases or dust
    • C21C5/40—Offtakes or separating apparatus for converter waste gases or dust

Definitions

  • the invention relates to a converter system with at least one tiltable converter, which is surrounded by a housing, on the ceiling of which a main exhaust line for discharging fresh gases is connected, part of the housing being attached to a charging device and being movable therewith.
  • exhaust gases come out of the converter mouth during the refreshment, which mainly consist of carbon oxides and entrained FeO particles. These exhaust gases, also known as main emissions, have to be cleaned and the energy contained therein may have to be extracted before they can be released into the atmosphere. Even when charging a converter with scrap and pig iron and tapping the molten steel into the ladle, there is sometimes a lot of smoke, which exhaust gases are referred to as secondary emissions.
  • An even greater burden from smoke and smoke development is in steelworks with floor-blowing converters, e.g. given when carrying out the OBM process, since the introduction of auxiliary substances into the floor nozzles causes sparks in the form of sparks.
  • the known devices for discharging the exhaust gases comprise cover hoods which surround the converter mouth and are connected to exhaust lines which can neither reliably absorb the main emissions nor the secondary emissions.
  • a device has also become known (DE-A-22 33 443) in which a steelworks converter is installed on all sides with a small distance which allows a tilting movement. The converter is charged through a side opening into which the snout of the charging container or a charging channel can be inserted. The charging opening remains open during charging, and therefore it cannot be prevented that the pollutants of the secondary emissions also escape through the charging opening, get into the atmosphere and endanger safety. This danger is particularly present in OBM converters when the floor nozzles are applied.
  • a system is also known (AT-B-329.895) in which a stationary melting furnace, in particular an electric arc furnace, is surrounded by a housing, the furnace being able to be run over by a crane. Sheets are attached to the crane at intervals, which alternately close a housing opening when the crane is extended and retracted.
  • Conductive converter systems have two exhaust lines, u. between primary and secondary emissions.
  • the invention aims at avoiding the disadvantages described and has as its object to create a converter system in which both the gases generated during the freshening process and during charging and pouring are reliably detected and an escape of these gases from the system into the hall is reliable is avoided, where appropriate the charging crane can be used for several converters standing side by side.
  • the charging device as a in the longitudinal direction, i.e. In the direction of the tilting axis of the converter or the movable gantry crane is formed, to which a cellular housing part is fastened, which is open on the converter side and has a gas exhaust opening in the ceiling, but is otherwise closed, whereby in the charging position and possibly also in the pouring position Cellular part closes the housing and the exhaust opening in the ceiling comes to a halt below a secondary exhaust line to discharge the secondary emissions.
  • the crane is expediently a semi-portal crane and is mounted on the working platform and an intermediate crane runway girder which is arranged on the housing ceiling.
  • the cell walls can be constructed in several parts to accommodate charging containers or the like placed on the working platform with the aid of the lifting mechanism of the semi-portal crane, one wall part being movable for the lateral insertion of the charging container.
  • Another inexpensive way of receiving charging containers is that an opening for lifting charging containers or the like is provided in the work platform by means of the lifting mechanism of the gantry crane from the hallway.
  • FIG. 1 shows a side view of the converter system with the housing side walls removed in section according to I-I in FIG. 3
  • FIG. 2 shows a front view of the cellular part of the housing with the front wall removed according to FIG. 11-11 in FIG. 1 and the connection of the exhaust opening to the secondary exhaust line
  • Fig. 3 shows the plant in plan according to 111-111 in Fig. 1
  • Fig. 4 illustrates in side view a charging container on the work platform after lifting a cell wall part
  • 5 shows a side view of a charging container to be received from the hut hallway through an opening in the working platform.
  • Fig. 1 is a about a horizontal axis tiltable converter 1 surrounded by a housing 2, on the cover 3 a main exhaust line 4 is connected to discharge the main emissions arising during the freshening.
  • a cell-shaped part 6 is fastened to a semi-gantry crane 5 which can be moved in the longitudinal direction of the hall and which can have an approximately U-shaped layout and is open on the converter side 7.
  • This part 6 has an opening 9 in the ceiling 8.
  • the cell side walls 10 and 10 ' close to a wall 11, so that the housing is closed on all sides, the ceiling opening 9 of the cellular part 6 coming to rest below the secondary exhaust line 12 and the connection being closed this manufactures.
  • This secondary exhaust line 12 can open into the main exhaust line 4, wherein the exhaust gases can be fed to a common filter system.
  • the semi-portal crane 5 is mounted on the working platform 13 and an intermediate crane runway support 14, which is fastened to the housing ceiling 3, by means of rollers 15, 15 '. It can be moved between the loading stations and the charging position or several charging positions with a plurality of converters in the longitudinal direction of the hall.
  • a side wall 10 of the cellular part 6 is formed in two parts, the lower part being designed as a door 21 that can be raised and lowered.
  • the semi-portal crane 5 with the cellular part 6 attached to it can run over and pick up a charging container 16 placed on the working platform 13.
  • FIG. 5 there is an opening 22 in the work platform 13.
  • a charging container 16 placed on the hut floor 23 can be received with the lifting mechanism 18 from below and then moved into the charging position.
  • the operation of the system is such that converter 1 is first loaded with scrap.
  • the overhead crane 20 installed on the upper crane runway 19 brings a loaded scrap chute 24 to a transfer point.
  • This can be on the work platform 13 or on the hut floor 23, as shown in FIGS. 4 and 5.
  • the semi-portal crane 5 takes over the scrap chute 24 and moves it to the charging position, in which the charging takes place by tilting the scrap chute into the mouth of the likewise tilted converter.
  • This position is indicated in Fig. 1 with dash-dotted lines.
  • the exhaust gases generated during charging, the secondary emissions, flow through the cellular part 6 of the housing, sweep past the trolley 17 and reach the secondary exhaust line 12, the hall itself remaining free of smoke.
  • the converter 1 is then charged with pig iron, the pig iron pan 16 being taken over in the same way from a transfer point with the semi-portal crane 5. After the converter has been tilted into the vertical blowing position (shown in dashed lines in FIG. 1), refreshing takes place, the resulting exhaust gases being taken up by the main exhaust line 4.
  • one type of use of the device according to the invention can be to bring the semi-portal crane 5 with the cellular part 6 into the closed position even when the steel is poured, without a container is on the crane. In this type of application, the casting takes place with the housing closed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Claims (4)

1. Installation de conversion de métal, avec au moins un convertisseur basculant (1) qui est entouré d'une enveloppe (2) au plafond (3) de laquelle se raccorde un conduit d'évacuation principal (4) pour éliminer les gaz d'affinage, une partie de l'enveloppe étant fixée à une installation de chargement et pouvant être déplacée au moyen de celle-ci, caractérisée en ce que l'installation de chargement est conformée en grue à portique (5) déplaçable dans la direction longitudinale du hall, c'est-à-dire dans la direction de l'axe de basculement du ou des convertisseurs (s) (1), la grue portant, fixée à elle, une partie d'enveloppe en forme de cellule (6) ouverte du côté (7) du convertisseur, et qui présente, dans son plafond (8) une ouverture (9) d'évacuation des gaz, mais qui par ailleurs est fermée, la partie (6) en forme de cellule fermant l'enveloppe (2) dans la position de chargement et éventuellement aussi dans la position de coulée, l'ouverture d'évacuation (9) dans le plafond (8) venant se placer en dessous d'un conduit d'évacuation auxiliaire (12) pour l'élimination des émissions secondaires.
2. Installation suivant la revendication 1, caractérisée en ce que la grue (5) est une grue à demi-portique et en ce qu'elle est montée sur la plate-forme de travail (13) et sur le support pour voie de grue intermédiaire, (14) prévu sur le plafond (3) de l'enveloppe.
3. Installation suivant l'une quelconque des revendications 1 et 2, caractérisée en ce que les parois latérales (10, 10') de la cellule sont faites de plusieurs parties, l'une des parties de parois (21) étant mobile pour permettre l'introduction latérale du récipient de chargement (16).
4. Installation suivant l'une quelconque des revendications 1 à 3, caractérisée en ce qu'il existe dans la plate-forme de travail (13) une ouverture (22) pour soulever des récipients de chargement (16) ou analogues, du plancher (23) de l'usine, à l'aide de l'appareil de levage (18) de la grue à demi-portique (5).
EP79890006A 1978-05-24 1979-05-21 Installation de conversion de métal avec un convertisseur basculant Expired EP0005692B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT376978A AT355071B (de) 1978-05-24 1978-05-24 Konverteranlage mit einem metallurgischen gefaess
AT3769/78 1978-05-24

Publications (2)

Publication Number Publication Date
EP0005692A1 EP0005692A1 (fr) 1979-11-28
EP0005692B1 true EP0005692B1 (fr) 1981-07-08

Family

ID=3555178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79890006A Expired EP0005692B1 (fr) 1978-05-24 1979-05-21 Installation de conversion de métal avec un convertisseur basculant

Country Status (6)

Country Link
US (1) US4243208A (fr)
EP (1) EP0005692B1 (fr)
JP (1) JPS54153708A (fr)
AT (1) AT355071B (fr)
CS (1) CS212701B2 (fr)
DE (1) DE2960455D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT394396B (de) * 1990-07-03 1992-03-25 Voest Alpine Stahl Donawitz Verfahren zur wiederverwendung von huettenstaeuben sowie vorrichtung zur durchfuehrung dieses verfahrens
DE4409178A1 (de) * 1994-03-17 1995-09-21 Siemens Ag Verfahren und Anordnung zum Ermitteln der Position von Mobilstationen in einem Mobilfunksystem

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4714010A (en) * 1985-04-12 1987-12-22 Cm & E/California, Inc. Industrial exhaust ventilation system
AT387925B (de) * 1987-06-22 1989-04-10 Voest Alpine Ag Pfannenabschlackstand
US6071467A (en) * 1997-12-12 2000-06-06 Uss/Kobe Steel Company Technique and apparatus for ladle cleanout
US6017486A (en) * 1997-12-12 2000-01-25 Uss/Kobe Steel Company Comprehensive fume collection system for production of leaded steel
US6036914A (en) * 1997-12-12 2000-03-14 Uss/Kobe Steel Company Dumping bay with fume collecting provisions
US6077473A (en) * 1997-12-12 2000-06-20 Uss/Kobe Steel Company Torch cutting enclosure having fume collection provisions
JP2019183250A (ja) * 2018-04-17 2019-10-24 日本製鉄株式会社 転炉へのスクラップの投入方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743264A (en) * 1971-07-26 1973-07-03 Pennsylvania Engineering Corp Steel conversion apparatus
NL165502C (nl) * 1971-11-17 1981-04-15 Hoogovens Ijmuiden Bv Staalfabriek met kantelbare staalconverters.
LU71254A1 (fr) * 1974-02-02 1975-05-21
AT357580B (de) * 1977-02-04 1980-07-25 Voest Alpine Ag Abzugshaube an einem einen kippbaren konverter aufweisenden blasstand
AT357581B (de) * 1977-05-10 1980-07-25 Voest Alpine Ag Abzugshaube zum ableiten des beim chargieren eines metallurgischen gefaesses aufsteigenden rauches bzw. abgases

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT394396B (de) * 1990-07-03 1992-03-25 Voest Alpine Stahl Donawitz Verfahren zur wiederverwendung von huettenstaeuben sowie vorrichtung zur durchfuehrung dieses verfahrens
DE4409178A1 (de) * 1994-03-17 1995-09-21 Siemens Ag Verfahren und Anordnung zum Ermitteln der Position von Mobilstationen in einem Mobilfunksystem

Also Published As

Publication number Publication date
ATA376978A (de) 1979-07-15
US4243208A (en) 1981-01-06
DE2960455D1 (en) 1981-10-15
JPS54153708A (en) 1979-12-04
CS212701B2 (en) 1982-03-26
EP0005692A1 (fr) 1979-11-28
AT355071B (de) 1980-02-11

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