EP0063150A1 - 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.

Info

Publication number
EP0063150A1
EP0063150A1 EP19810902982 EP81902982A EP0063150A1 EP 0063150 A1 EP0063150 A1 EP 0063150A1 EP 19810902982 EP19810902982 EP 19810902982 EP 81902982 A EP81902982 A EP 81902982A EP 0063150 A1 EP0063150 A1 EP 0063150A1
Authority
EP
European Patent Office
Prior art keywords
slag
feed station
forming belt
belt
cooling
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
EP19810902982
Other languages
German (de)
English (en)
Other versions
EP0063150B1 (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
Individual
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 Individual filed Critical Individual
Publication of EP0063150A1 publication Critical patent/EP0063150A1/fr
Application granted granted Critical
Publication of EP0063150B1 publication Critical patent/EP0063150B1/fr
Expired legal-status Critical Current

Links

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, in particular blast furnace slag, the slag being poured, shaped and solidified continuously.
  • a method of this type is known from GB-PS 153.082.
  • the slag is continuously introduced into individual, separate forms by means of a filling funnel, so that despite the continuous pouring, only relatively small slag stones are formed in their dimensions, which have to be ejected individually from the forms.
  • this method is not suitable because it does not take into account the solidification conditions specific to the slag (due to its very low thermal conductivity).
  • the slag is first brought to a temperature range in which it is viscous or dough-shaped and is poured into a continuous strand in this state to form a coherent strand, the slag preferably being poured onto one Is brought temperature range in which it has a viscosity between 100 and 150 poise.
  • the slag is only poured into the viscous state after cooling. In this state, the residual solidification takes place quickly enough, despite the poor thermal conductivity of the slag, so that a continuous strand can be cast.
  • additives such as additives containing SiO 2 and / or Al 2 O 3 , are added to the molten slag, the additives serving to improve the mechanical properties in the production of glass-solidifying moldings and to reduce residual stresses which arise during cooling reduce or avoid if possible.
  • the additives are expediently added in a mixer which receives the slag and 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.
  • a device for carrying out the method with an endless belt formed from molds, guided over two deflecting wheels and a feed station for the liquid slag is characterized in that the belt is designed as a forming belt with a U-shaped profile and has an uninterrupted mold cavity in the longitudinal direction of the forming belt and that the feed station has an outflow gap for the slag which is adapted to the cross-sectional shape of the mold cavity of the molding belt.
  • the outflow gap can be heated and its size can be adjusted.
  • At least one cooling zone is advantageously arranged downstream of the feed station for the liquid slag, one or more of the cooling zones being heatable.
  • the feed station is preferably preceded by a mixer, in particular a continuous rotary tube mixer, for the slag.
  • cooling medium is supplied in the feed station and / or in at least one of the cooling zones, the heated cooling medium preferably being used as the circulating medium in a thermodynamic cycle.
  • the cooling medium is guided in a closed circuit, with pipe coils carrying coolant being arranged within the feed station or the cooling zone.
  • Fig. 1 is a schematic side view (partially cut) a plant for casting the slag and Fig. 2 shows a section along the line II-II.
  • 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 30 to 150 poise is allowed to flow continuously out of 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 forming 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 along with the forming belt for a short distance during the embossing process or remain constantly on, the strand 12 in the plates are pressed in, compacted and the surfaces are 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, whereby a temperature profile is achieved that a voltage or. allows crack-free cooling of the plates. The optimal temperature profile depends on the slag analysis. In order to enable a brief increase and a maintenance of the temperature, heatable sections are also provided (Fig. 2). In order to facilitate the cutting to length, 12 marking notches can be embossed into the molding strand 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
  • 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 measuring sensors and possibly via a microprocessor.
  • a coil 14 is located, which is arranged within the cooling zone 8.
  • This coil of pipes serves to guide a coolant through the cooling zone 8, which is used to obtain the tangible goods me the spilled 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 By means of a pump 18, the water is in turn directed from the feed water tank 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.

Landscapes

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

Abstract

Pour la fabrication d'elements en laitier, notamment en laitier de hauts fourneaux, le laitier est verse, forme et solidifie. Pour pouvoir couler egalement d'une maniere continue des elements en forme de plaque en laitier, le laitier est d'abord porte a une temperature a laquelle il est visqueux ou pateux puis verse dans cet etat sous forme d'une bande (12) sur un ruban de moulage (2).
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 true EP0063150A1 (fr) 1982-10-27
EP0063150B1 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8201505A1 *

Also Published As

Publication number Publication date
WO1982001505A1 (fr) 1982-05-13
AT379984B (de) 1986-03-25
ATA528180A (de) 1985-08-15
EP0063150B1 (fr) 1985-06-19

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