EP0063150B1 - Procede de production d'elements en laitier et dispositif pour sa mise en oeuvre - Google Patents

Procede de production d'elements en laitier et dispositif pour sa mise en oeuvre Download PDF

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Publication number
EP0063150B1
EP0063150B1 EP19810902982 EP81902982A EP0063150B1 EP 0063150 B1 EP0063150 B1 EP 0063150B1 EP 19810902982 EP19810902982 EP 19810902982 EP 81902982 A EP81902982 A EP 81902982A EP 0063150 B1 EP0063150 B1 EP 0063150B1
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EP
European Patent Office
Prior art keywords
slag
cooling
moulding
strand
cooling zone
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
EP19810902982
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German (de)
English (en)
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EP0063150A1 (fr
Inventor
Anton Hulek
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
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Filing date
Publication date
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0063150A1 publication Critical patent/EP0063150A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/54—Producing shaped prefabricated articles from the material specially adapted for producing articles from molten material, e.g. slag refractory ceramic materials

Definitions

  • the invention relates to a process for the production of moldings, in particular plate-shaped moldings from metallurgical slag, such as blast furnace slag, with the sensible heat of the slag being obtained, and to an apparatus for carrying out the process.
  • the invention aims to avoid these disadvantages and difficulties. It is based on the object of creating an economical method and an apparatus for carrying out the method, which enable continuous and economical production of, in particular, thin-walled, plate-shaped moldings from slag.
  • additives such as additives containing Si0 2 and / or A1 2 0 3 , are added to the molten slag, the additives serving to improve the mechanical properties in the production of glass-solidifying moldings and to increase residual stresses which occur during cooling reduce or avoid if possible.
  • the additives are expediently added in a mixer receiving the slag, which serves to even out the temperature and slag composition of the slag obtained with each blast furnace tapping, or in an inlet channel leading the slag to the mixer.
  • two cooling zones are provided, with a shaping zone for surface shaping of the cast strand being arranged between the first and second cooling zones.
  • the outflow gap is advantageously heatable and its size adjustable.
  • One or more of the cooling zones is expediently heatable.
  • the feed station is preferably preceded by a mixer, in particular a continuous rotary tube mixer, for the slag.
  • Fig. 1 shows a schematic side view (partially cut) of a plant for pouring the slag and Fig. 2 shows a section along the line 11-11.
  • a feed station for the slag which is designed as a slag collecting container, with 2 a circumferential forming belt with deflection rollers 3, 3 'and with 4 the individual shapes or plates of the forming belt are designated.
  • These plates 4 have laterally projecting flanges 5 and thus a U-shaped profile.
  • the plates 4 can be embossed or otherwise structured to produce ornamental effects.
  • Several circumferential plate belts can be arranged side by side. In the longitudinal direction, the ends of the plates 4 overlap. between both in the flange and in the bottom area, so that no slag can flow out.
  • the plates are supported on support rollers 6.
  • the viscous slag with 3 to 15 Pa s (30 to 150 poise) is allowed to flow out continuously from a horizontal outflow gap 7 of the container 1 onto the plates 4 of the forming belt 2.
  • the gap can be heated and its size can be adjusted.
  • the outflow gap can also be formed by a recess at the upper edge of the container 1, the container 1 being refilled accordingly during the pouring of the slag.
  • the slag is expediently kept in motion (for example by means of an agitator) in order to achieve temperature compensation or to be able to regulate the toughness of the slag to a predetermined value.
  • the shaping belt 2 moves continuously through a first cooling zone 8 and through a shaping zone 9, in which embossing presses 10 or roll stands with profiling rollers are provided, which run with the shaping belt for a short distance during the embossing process or remain on continuously, the strand 12 in the plates are pressed in, compacted and the surface embossed.
  • a further cooling zone 11 adjoins the shaping zone 9, after the passage of which the strand 12 is cut into individual pieces.
  • the cooling zone 11 is divided into several sections in the longitudinal direction, as a result of which a temperature profile is achieved which enables the plates to be cooled without tension or cracks.
  • the optimal temperature profile depends on the slag analysis.
  • heatable sections are also provided (Fig. 2).
  • 12 marking notches can be embossed in the molding zone in the shaping zone, along which the separation takes place.
  • the method according to the invention is particularly suitable for the production of roof tiles, floor and wall panels and similarly thin moldings.
  • a mixer 13 preferably a continuous rotary tube mixer, can be provided in front of the container 1 in order to equalize the temperature and slag composition (homogenization). If desired, additives can be introduced into this mixer.
  • the regulation of the size of the outflow gap 7 and the belt speed of the forming belt 2 takes place as a function of the plate thickness and the requirements of the slag to be cast, in which the toughness is a function of temperature and chemical composition.
  • the size of the outflow gap and the belt speed as well as the inflow are expediently controlled by means of appropriate sensors and possibly by means of a microprocessor.
  • a coil 14 is located, which is arranged within the cooling zone 8. This coil 14 is used to guide a coolant through the cooling zone 8, which is used to obtain the sensible heat of the poured slag.
  • the heated, vaporous coolant is preferably conducted in a thermodynamic cycle, which is illustrated schematically in FIG. 1.
  • 15 denotes a turbine, from which the expanded steam is guided into a condenser 16 and from there to a feed water tank 17.
  • a pump 18 the water from the feed water tank is in turn directed to the coil 14.
  • the turbine drives a generator 19. It is possible to use the steam generated in the coil 14 for other purposes, for example for heating purposes, etc.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Claims (7)

1. Procédé de fabrication de pièces moulées, en particulier, de pièces moulées présentant la forme de plaques, en laitier sidérurgique, notamment en laitier de haut-fourneau, avec récupération de la chaleur sensible du laitier, caractérisé par la combinaison des phases de procédé suivantes: on ramène le laitier, par refroidissement, à un intervalle de température dans lequel il est visqueux ou pâteux et présente une viscosité comprise entre 3 et 15 Pa - s (entre 30 et 150 poises); ensuite, on coule le laitier en continu dans une cavité de moulage ininterrompue formée dans une bande de moulage (2) possédant un profil en U, en formant ainsi une barre cohérente (12), on refroidit la barre (12) coulée dans au moins une zone de refroidissement (8, 11) prévue le long de la bande de moulage (2), avec solidification vitreuse; et on achemine un fluide de refroidissement à au moins l'une des zones de refroidissement (8) pour refroidir la barre et récupérer la chaleur sensible du laitier, le fluide de refroidissement chauffé dans la zone de refroidissement étant utilisé comme fluide caloporteur dans un cycle thermodynamique.
2. Procédé selon la revendication 1, caractérisé en ce qu'on ajoute des additifs, notamment des additifs contenant Si02 et/ou A1203, au laitier avant la coulée.
3. Installation pour la mise en oeuvre du procédé selon l'une des revendications 1 et 2, caractérisée par la combinaison des caractéristiques suivantes: l'installation comprend un réservoir de laitier (1) présentant une fente de coulée (7); en aval de la fente de culée (7) est agencée une bande de moulage (2) à profil en U, cette bande de moulage (2) présentant une cavité ou empreinte de moulage ininterrompue dans sa direction longitudinale; il est prévu le long de la bande de moulage (2) au moins une zone de refroidissement (8) dans laquelle est prévu un échangeur de chaleur (14) destiné à récupérer la chaleur du laitier à refroidir; et le fluide de refroidissement qui traverse l'échangeur de chaleur (14) parcourt un cycle thermodynamique.
4. Installation selon la revendication 3, caractérisée en ce qu'elle comprend deux zones de refroidissement (8, 11), tandis qu'une zone de moulage (9) est interposée entre la première et la deuxième des zones de refroidissement pour mettre en forme la surface de la barre coulée (12).
5. Installation selon l'une des revendications 3 et 4, caractérisée en ce que la fente de coulée (7) peut être chauffée et que ses dimensions sont réglables.
6. Installation selon les revendications 3 à 5, caractérisée en ce que l'une ou plusieurs des zones de refroidissement (8) peut on peuvent être chauffée(s).
7. Installation selon les revendications 3 à 6, caractérisée en ce qu'un mélangeur à laitier (13), en particulier un mélangeur à tube rotatif à passage continu, est placé en amont du réservoir de laitier (1).
EP19810902982 1980-10-27 1981-10-27 Procede de production d'elements en laitier et dispositif pour sa mise en oeuvre Expired EP0063150B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0528180A AT379984B (de) 1980-10-27 1980-10-27 Verfahren zur herstellung von formkoerpern aus huettenschlacke und vorrichtung zur durchfuehrung des verfahrens
AT5281/80 1980-10-27

Publications (2)

Publication Number Publication Date
EP0063150A1 EP0063150A1 (fr) 1982-10-27
EP0063150B1 true EP0063150B1 (fr) 1985-06-19

Family

ID=3574039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810902982 Expired EP0063150B1 (fr) 1980-10-27 1981-10-27 Procede de production d'elements en laitier et dispositif pour sa mise en oeuvre

Country Status (3)

Country Link
EP (1) EP0063150B1 (fr)
AT (1) AT379984B (fr)
WO (1) WO1982001505A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT382389B (de) * 1985-06-13 1987-02-25 Voest Alpine Ag Verfahren und anlage zur verwertung von huettenschlacke
AT516472A1 (de) * 2014-10-27 2016-05-15 Hulek Anton Vorrichtung zum Herstellen von Hüttenbims
CN107699646B (zh) * 2017-11-16 2023-02-21 中冶沈勘秦皇岛工程设计研究总院有限公司 不锈钢渣粒化装置及方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE17313C (de) * A. D. ELBERS in Hoboken, New-Jersey (V. St. A.) Verfahren zum Giefsen von Hochofenschlacke
GB153082A (en) * 1919-07-29 1920-10-29 Samuel Williams Improvements in apparatus for moulding slag or other material whilst in a molten condition
US2067312A (en) * 1933-06-29 1937-01-12 William C Coryell Process of treating slag
US2067313A (en) * 1933-06-29 1937-01-12 William C Coryell Process of forming slag blocks
DE815922C (de) * 1949-03-24 1951-10-04 Karl Hermann Frhr V Gemmingen Verfahren zum stetigen Giessen von Gussstuecken aus metallurgischen Schlacken
DE912554C (de) * 1949-06-14 1954-05-31 Thyssen Huette Ag Herstellung von Formstuecken aus fluessiger Schlacke, insbesondere aus Hochofenschlacke
DE1076014B (de) * 1956-05-19 1960-02-18 En Versorgung Schwaben A G Verfahren und Vorrichtung zur Herstellung von poroeser Schlacke als Zuschlagstoff fuer Beton aus Kesselschlacke
DE2113005A1 (de) * 1971-03-18 1972-11-09 Ernst Brinker Verwendung von in Schwelkammerfeuerungen von Kesseln anfallender Schlacke

Also Published As

Publication number Publication date
WO1982001505A1 (fr) 1982-05-13
EP0063150A1 (fr) 1982-10-27
AT379984B (de) 1986-03-25
ATA528180A (de) 1985-08-15

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