EP0416086B1 - Vorrichtung und verfahren zum herausschleudern einer pulverförmigen und/oder faserförmigen materialien bestehenden beschichtung und auf diese weise erhaltene beschichtung - Google Patents

Vorrichtung und verfahren zum herausschleudern einer pulverförmigen und/oder faserförmigen materialien bestehenden beschichtung und auf diese weise erhaltene beschichtung Download PDF

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Publication number
EP0416086B1
EP0416086B1 EP90905551A EP90905551A EP0416086B1 EP 0416086 B1 EP0416086 B1 EP 0416086B1 EP 90905551 A EP90905551 A EP 90905551A EP 90905551 A EP90905551 A EP 90905551A EP 0416086 B1 EP0416086 B1 EP 0416086B1
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EP
European Patent Office
Prior art keywords
mixture
water
spraying
air
coating
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Expired - Lifetime
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EP90905551A
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English (en)
French (fr)
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EP0416086A1 (de
Inventor
Jean Daussan
Gérard Daussan
André Daussan
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Daussan SAS
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Daussan SAS
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Priority to AT90905551T priority Critical patent/ATE91928T1/de
Publication of EP0416086A1 publication Critical patent/EP0416086A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings
    • B22D41/023—Apparatus used for making or repairing linings
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining

Definitions

  • the present invention relates to a method for continuously spraying a coating comprising large percentages of pulverulent and / or fibrous materials and intended to set after wetting with water, in particular a fire protection coating or an insulation coating thermal or phonic or acoustic, or an insulation and / or protective coating of the walls of a metallurgical container intended to receive liquid metal.
  • the invention also relates to a machine for spraying such a coating, as well as a coating obtained by using the aforementioned machine or method.
  • This process does not solve the problems associated with the presence of pulverulent materials, whether they are refractory particles having in themselves a certain hydraulic setting effect, such as for example particles of dead-burned magnesia, or particles of binder, which can be a binder with hydraulic setting, such as for example cement, or a binder with chemical setting, such as for example silicate.
  • the known technique teaches those skilled in the art to only humidify the mixture at the end of the projection tubing, for fear of setting the binder and in particular cement, and / or said refractories , or a jamming of the fibers causing a setting of the binder and in particular of the cement, at any point of the machine.
  • the projection of a coating of the aforementioned types is accompanied, if one does not take corrective measures, of a very strong release of dust which, regardless of the inconvenience and nuisance for the personnel, can cause material losses and appreciable and harmful differences between the composition of the coating applied and that intended.
  • One of the possible corrective measures consists in significantly increasing the proportion of water added before spraying. Such a measure effectively reduces the generation of dust, but the excessively wet mixture is too heavy and too fluid, and tends to flow along, or fall from, the wall on which it is applied, which considerably limits the '' thickness that can be applied at one time. On the other hand, the water used in too large quantity gives on evaporation a coating whose porosity is too important and can lead to the creation of cracks.
  • a mixture containing, for example, a small amount of dedusting oil introduced during the preparation of this mixture containing, for example, a small amount of dedusting oil introduced during the preparation of this mixture.
  • the percentage of oil added depends on the regulations in force, in particular in the case of fire protection coatings or protective coatings on the walls of metallurgical vessels, and never exceeds a few percentage points.
  • this oil burns at high temperature on contact with liquid metal or in the event of a fire, and pollutes steel or the environment, which clearly reduces the characteristics of the protection provided by the coating in question.
  • the object of the invention is to propose a method of the aforementioned kind which overcomes the drawbacks of known methods and which makes it possible to spray a coating comprising large percentages of pulverulent and / or fibrous materials and intended to set after wetting with water. , this coating not comprising or substantially no dusting oil without excessive dust generation, the amount of water corresponding substantially to the amount necessary to provide the mixing water for the materials and possibly the water of crystallization of hydraulic or chemical binders (silicate) of the coating.
  • the Applicant has in fact noticed that it was possible to pre-humidify the mixture provided that it retains the characteristics of a dry or substantially dry product, that is to say in particular that the pulverulent and / or fibrous materials can remain in suspension in the blown air and do not exhibit any segregation liable to harm the homogeneity and uniformity of the mixture.
  • water spray is injected, or air and water spray, in several places of the machine and of the mixture transport pipe and the quantity of water injected into each of these places to obtain in each of these a mixture having a predetermined moisture content depending on the nature, diameter and amount of the fibrous materials and depending on the nature, the particle size and the quantity of pulverulent materials, so that the mixture retains the characteristics of a substantially dry product.
  • the machine for spraying a coating comprising large percentages of pulverulent and / or fibrous materials and intended to set after wetting with water comprises, l upstream downstream, means for receiving the mixture of materials constituting the coating, means for conveying the mixture to the lower part of the machine, rotary means forming an airlock and distributor for distributing the mixture by gravity in a blowing, blowing means for propelling the mixture by blowing air from the blowing chamber in a transport pipe to a projection tube at the end of which is sprayed with water, or air and water spray, to make said mixture pasty to allow its projection and setting.
  • this machine is characterized in that it further comprises, between the receiving means and the projection tube, at least one sprayer of water, or air and water , to pre-humidify the mixture.
  • the method and the spraying machine in accordance with claims 1 and 3 make it possible to reduce the emission of dust and to reduce the amount of water required to carry out the spraying, the second of these making it possible to optimize the spraying conditions and the quality of the coating obtained.
  • the coating comprising large percentages of pulverulent and / or fibrous materials and intended to set after wetting with water and spraying, is characterized in that it is obtained by means of a spraying machine according to the invention and / or it is produced by a process according to the invention.
  • Such a coating contains only a reduced amount, or does not contain, oil, has a predetermined porosity because it can be applied without using an excessive amount of water, does not flow along, or does not fall de, the wall on which it is projected, and can therefore be projected, in most cases, in one go with the necessary thickness. Due to the reduced dust emission rate, this coating has exactly the intended composition once in place.
  • the spraying machine according to the invention is suitable for spraying coatings comprising large percentages of pulverulent and / or fibrous materials and intended to be sprayed after wetting with water, in particular coatings of fire protection or of thermal or sound or acoustic protective coatings, or of protective coatings of the walls of a metallurgical receptacle intended to receive liquid metal.
  • It can for example spray coatings composed of a hydraulic binder such as for example cement, or chemical, such as for example a silicate and / or a resin, and / or refractory particles having a hydraulic effect and acting as a binder, and mineral and / or organic fibers whose nature is adapted to the function of the coating; the composition thereof can vary from 0.5% of binder and 99.5% of fibers, up to 0% of fibers and 100% of binder and other pulverulent and granular materials.
  • the machine can in particular spray coatings composed of a binder and / or cement, fibers and pulverulent or granular materials such as perlite or vermiculite in the expanded or unexpanded state, the fibers being for example wool for insulating coatings.
  • the amount of water can be adjusted to the strict amount necessary to supply the mixing water for the materials and in certain cases, the water of crystallization from the binders or from the hydraulic and / or chemical setting materials. .
  • the spraying machine comprises a hopper 1 of substantially rectangular horizontal section inside which are mounted two parallel lumpers 2 rotating for example in opposite directions one of the other under the action of a motor not shown.
  • Each of the lump breakers 2 has several blades 3 distributed over the along its axis and having, for example, each a different orientation on this axis.
  • an Archimedes screw 4 is installed which can be driven by the same motor as the lump breakers 2.
  • the screw 4 pushes the materials towards one of its ends up to a card 6 which, in the example shown, is mounted directly on the shaft 5 of the screw 4.
  • the card 6 carries combs and / or fingers 7 diametrically opposite two by two, which give the materials a downward movement.
  • a pallet distributor 8 with a horizontal axis comprising for example from eight to twelve pallets 9 regularly distributed around its shaft and which are flush with the inner wall of the casing 10 of the distributor.
  • the distributor 8 can also be driven by the same motor as the lump breakers 2 and the screw 4.
  • a blowing chamber 11 into which is introduced the blowing air produced by a blower 12 driven by a motor not shown.
  • the spraying machine comprises a set of pipes 15, rigid in the example shown, equipped with injectors 16 of any known type arranged in various locations of the hopper 1, above the card 6 and into the distributor 8.
  • injectors 16 of any known type arranged in various locations of the hopper 1, above the card 6 and into the distributor 8.
  • These pipes 15 and sprayers 16 make it possible to inject water or, preferably, a mixture of air and water in order to prehumidify the mixture.
  • flexible piping 15a accompanies the flexible pipe 13 for transporting the mixture, and supplies water, or a mixture of air and water, one or more spray nozzles 17 of known type arranged substantially in the axis of the pipe 13.
  • the nozzles can be of the type whose walls are cut in the shape of a corkscrew.
  • a nozzle 18 of known type placed at the end of the spray tube 14.
  • a nozzle 18 can comprise in known manner, at the periphery of the tubing, radially directed openings or openings directed along certain generators of a cone converging downstream of the nozzle, or, in the axis of the tubing, a simple injector or a nozzle, the walls of which are cut in the form of a corkscrew.
  • the upper part of the hopper 1 can be closed by a sealed cover 19 which pivots about an axis 20.
  • the cover 19 is, in its closed position, locked to the hopper 1 by any known means not shown which allow operation of the pressurized machine.
  • a spreader plate 21 is fixed to the projection nozzle 18 of the projection tube 14.
  • Figures 3 and 5 show a spreader plate 21 according to the invention in service on the side walls 22 and 23 and on the bottom 24 of a continuous casting distributor 25, the spreader plate 21 used to produce above the coating permanent 26 of this distributor 25 a wear coating 27.
  • the spreader plate 21 has a trapezoidal shape, particularly suitable for the execution of the wear coating 27 on the inclined side walls 22 and 23 of the distributor 25.
  • the spreader plate 21 has on two of its adjacent sides a flexible flap 28 which retains the bouncing materials and the dust.
  • the flexible flaps 28 are for example made of rubber or plastic, are fixed in any known manner on the plate 21 and protrude perpendicularly to the latter in the direction of the surface to be coated.
  • the flaps 28 have, of course, a height substantially equal to or greater than the thickness of the coating 27 to be applied.
  • the spreader plate 21 is traversed substantially at its center by the projection nozzle 18. It can also be crossed by one or more vents 29, two in number in the example shown, comprising for example a valve 30 returned to its seat in the direction of the surface to be coated with a spring 31 (see FIG. 6), which facilitates the evacuation of the air for transporting and projecting the mixture.
  • FIG. 5 shows, on the one hand a spreader plate 21 at rest, placed on a coating 27 applied to the bottom 24 of a continuous casting distributor 25, the flap 28 being easily raised, on the other hand a spreader plate 21 during the execution of the coating 27 on the wall 22 of this distributor, the projected materials being, in the plane of the section, retained between the wall 22, the spreader plate 21, the coating 27 already in place and the flap 28 .
  • the spreader plate 21 has a rectangular shape, and carries flaps 28 on its four sides.
  • the spreader plate 21 has a rectangular shape. It is equipped on two of its opposite sides with rollers 32 which rotate freely around their respective axes, which are parallel to said sides.
  • the axes of the two rollers 32a, 32b are fixed but are located at different distances from the surface 21a of the spreader plate 21 facing the wall to be coated 33.
  • the roller 32a called front roller, is intended to roll on the wall 33 and maintains the surface 21a at a distance from the latter constant and substantially equal to or slightly greater than the thickness of the coating which it is desired to apply to this wall.
  • the rear roller 32b has the function of spreading and leveling the projected materials, and is intended to roll over the coating in place.
  • a flap 28 is fixed to the plate 21 beyond the rear roller 32b.
  • the axes of the two rollers 32c are movable in the direction perpendicular to the plate 21.
  • Each of the ends of these axes is carried by a rod 34 perpendicular to the plate 21 and which can slide in its longitudinal direction between the two branches of a U-shaped support 35.
  • a stop 36 integral with the rod 34 limits the movement in each direction thereof.
  • a spring 37 recalls the rod 34 and the roller 32c towards the wall to be coated 33.
  • roller 32c indicated on the left in FIG. 9 is, for example, intended to roll on the wall to be coated 33, the other roller 32c being intended to roll on the coating applied for the spread and equalize.
  • a flap 28 is provided behind this second roller 32c acting as a rear roller.
  • the mixture to be sprayed into the hopper 1 is returned by the blades 3 of the lump breakers 2, then conveyed by the screw 4 to the card 6 whose fingers 7 roughly separate the fibers and give the mixture a downward movement.
  • the vane distributor 8 brings into the blowing chamber 11 a substantially constant flow of mixture which is carried in the transport pipe 13 by the blowing air coming from the blower 12.
  • the machine shown in FIGS. 1 and 2 can in particular, with its card 6 and its vane distributor 8, spray coatings comprising extremely large percentages of fibrous materials: these percentages can greatly exceed 50% by weight and reach the above-mentioned upper limit of 99.5%.
  • a spreader plate 21 fixed to the end of the projection tube 14 is used beyond the projection nozzle 18, there is a considerable limitation of the material rebounds, and possibly of the emission of dust.
  • the avidity for water of fibers in particular wool, rock wool or slag, paper, and certain granular or powdered materials such as vermiculite and / or perlite, partly explains that l 'One can moisten the mixture of fibers and binder and / or cement (and possibly other materials) without having to fear the setting of the binder or cement in the machine.
  • the spraying machine can have a conical hopper, not a parallelepiped, a scraper arm provided with fingers moving along a conical path along the inner wall of the hopper, the latter being able to be provided at its base with a vertical axis comb forming a card, or other suitable agitating mechanism.
  • a vane distributor with a barrel distributor, also known as rotor distributor, known per se: a rotor with vertical axis, arranged at the lower part of the hopper, comprises several rotor chambers which pass successively, when the rotor rotates, under an inlet orifice through which the mixture to be sprayed arrives in the rotor chamber, then above an outlet orifice opening into the blowing chamber from which the material is propelled into the transport pipe by the blowing air.
  • barrel or rotor distributors are not suitable for the projection of mixtures containing very high quantities of fibers. These amounts of fiber naturally depend very much on the nature and dimensions of the fibers, but can hardly exceed percentages of the order of about 50% by weight.
  • injectors 16 and spray nozzles 17 can be modified, these can be individually adjustable or not.
  • a prehumidifier comprising means for receiving the mixture to be sprayed, means for conveying this mixture, such as one or more Archimedes screws or blades, and one or more sprayers water, or air and water.
  • a prehumidifier can naturally supply the spraying machine, either directly by pouring the prehumidified mixture into the hopper of the machine, or indirectly with load break and resumption of the prehumidified mixture, the prehumidifier can then operate to supply several spraying machines.
  • the spreader tray can be equipped with rollers and / or flaps in variable number, have any shape, be handled by a worker, by hand, or by a robot equipped with any means allowing to maintain said tray at a constant distance from the wall to be coated.
  • the flaps can also be made of a metal sheet, flexible or not.
  • the spreader plate may not include vents, or may include vents of a type other than that described.
  • the end of the projection tubing can be provided with a flexible pipe section with a length for example of a few tens of centimeters, preferably around thirty, to which one could communicate, by properly shaking the tubing, gyratory and / or pendulum movements facilitating the projection of the coating.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (13)

  1. Verfahren zum kontinuierlichen Spritzen einer Beschichtung, die beträchtliche Anteile von feinpulvrigen und/oder faserigen Stoffen enthalt und nach Anfeuchten mit Wasser abbinden soll, wobei das diese Beschichtung bildende Stoffgemisch nicht vor dem Spritzen mit dem Wasser gemischt werden kann, das für das Spritzen und Abbinden des Gemischs nötig ist, welches Verfahren die folgenden Schritte umfaßt:
    - Aufnehmen des Gemischs aus trockenen Stoffen, die die Beschichtung bilden, in einer Aufnahmevorrichtung,
    - Fördern des Gemischs in einem Transportkanal bis zu einem Spritzstutzen durch Einblasen von Luft in den unteren Teil der Aufnahmevorrichtung,
    - Einspritzen von Wasser in den Spritzstutzen, um das Gemisch pastös zu machen,
    - Spritzen des pastösen Gemischs,
    - Einstellen der eingespritzten Wassermenge auf die Menge, die nötig ist, um das Spritzen und das Abbinden des Gemischs zu ermöglichen,
    dadurch gekennzeichnet, daß dieses verfahren des weiteren die folgenden Schritte umfaßt:
    - die Stoffe werden derart zum unteren Teil der Aufnahmevorrichtung gefördert, daß die Entmischung dieser feinpulvrigen und/oder faserigen Stoffe verhindert wird,
    - das Gemisch wird von einer eine Schleuse bildenden volumetrischen Einrichtung in einer Blaskammer verteilt, in die die Förderluft des Gemischs eingeblasen wird,
    - zu einem ersten Zeitpunkt wird zerstäubtes Wasser oder Luft mit zerstäubtem Wasser an mindestens einem Punkt des Weges des Gemisches eingespritzt, um das Stoffgemisch vorzubefeuchten, wobei die so eingespritzte Wassermenge kleiner als die Menge ist, die notwendig ist, um das Spritzen und das Abbinden des Gemischs zu gewährleisten,
    - am Ende des Spritzstutzens (14) wird zerstäubtes Wasser oder Luft mit zerstäubtem Wasser in einem derartigen Verhältnis eingespeist, daß die Wassermenge gleich dem Unterschied zwischen der notwendigen Wassermenge und der bereits eingespeisten Wassermenge ist.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zeretäubtes Wasser oder Luft mit zerstäubtem Wasser an mehreren Stellen der Maschine und des Transportkanals des Gemischs eingespritzt wird, und daß die an jeder dieser Stellen eingespritzte Wassermenge optimiert wird, um an jeder dieser Stellen in Abhängigkeit von der Art, dem Durchmessers und der Menge der faserigen Stoffe und in Abhängigkeit von der Art, der Kornklassierung und der Menge der feinpulvrigen Stoffe einen festgelegten Feuchtigkeitsgrad derart zu erhalten, daß das Gemisch die Merkmale eines im wesentlichen trockenen Produktes behält.
  3. Maschine zum kontinuierlichen Spritzen einer Beschichtung, die beträchtliche Anteile von feinpulvrigen und/oder fasrigen Stoffen enthält und nach Anfeuchten mit Wasser abbinden soll, zur Durchführung des Verfahrens nach einem der Ansprüche 1 oder 2, wobei die Maschine von stromauf nach stromab enthält: eine Aufnahmevorrichtung (1) für das die Beschichtung bildende Stoffgemisch, eine Einrichtung zum Fördern des Gemischs zum unteren Teil der Maschine, eine sich drehende Einrichtung (8), die eine Schleuse und einen Verteiler bilden, zum Verteilen des Gemischs durch die Schwerkraft in eine Blaskammer (11), ein Gebläse (12), um durch Einblasen von Luft in die Blaskammer (11) das Gemisch in einem Transportkanal (13) bis zu einem Spritzstutzen (14) zu fördern, an dessen Ende zerstäubtes Wasser oder Luft mit zerstäubtem Wasser eingespritzt werden, um das Gemisch pastös zu machen, damit dieses aufgetragen werden und abbinden kann, wobei die Maschine dadurch gekennzeichnet ist, daß sie des weiteren zwischen der Aufnahmevorrichtung und dem Spritzstutzen (14) mindestens einen Zerstäuber (16, 17) für Wasser oder Luft mit Wasser aufweist, um das Gemisch vorzubefeuchten.
  4. Spritzvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Aufnahmevorrichtung einen Vorbefeuchter aufweist, der eine Einrichtung zum Fördern des Gemischs, wie eine oder mehrere Schrauben und/oder Flügel, und mindestens einen Zerstäuber für Wasser oder für Luft mit Wasser umfaßt.
  5. Spritzvorrichtung nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, daß sie mehrere Zerstäuber (16) für Wasser oder Luft mit Wasser, die in der Aufnahmevorrichtung und/oder um die Einrichtung zum Fördern des Gemischs zum unteren Teil der Maschine herum und/oder um die Verteilvorrichtung herum verteilt sind, sowie einen oder mehrere Zerstäuber (17) für Wasser oder Luft mit Wasser im Transportkanal aufweist.
  6. Spritzmaschine nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß die Einrichtung zum Fördern des Gemischs zum unteren Teil der Maschine eine Kratze (6), Finger, Kammblätter, eine Schraube oder einen Rührer aufweist.
  7. Spritzmaschine nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß die eine Schleuse und einen Verteiler bildende Einrichtung zum Verteilen des Gemischs einen Verteiler (8) mit Leitschaufeln, tonnenförmigen Schaufeln oder einem Zellenrad umfaßt.
  8. Spritzmaschine nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, daß das Ende des Spritzstutzens (14) mit einer Aufstreichplatte (21) versehen ist, die die Stoffe nach dem Abprallen zurückhält und die Emission von Staub verhindert.
  9. Spritzmaschine nach Anspruch 8, dadurch gekennzeichnet, daß die Aufsteichplatte (21) an mindestens einem ihrer Ränder einen Spritzlatz (28) aufweist.
  10. Spritzmaschine nach Anspruch 8, dadurch gekennzeichnet, daß die Aufstreichplatte (21) an mindestens einem ihrer Ränder eine Walze (32, 32a, 32b, 32c) aufweist, deren Achse parallel zu diesem Rand ist und deren Länge im wesentlichen gleich der Länge dieses Randes ist, wobei sich diese Walze (32, 32a, 32b, 32c) frei um ihre Achse drehen kann.
  11. Spritzmaschine nach Anspruch 10, dadurch gekennzeichnet, daß sich die Achse der Walze (32c) in einer Richtung verschieben kann, die senkrecht zur Ebene der Platte (21) ist, wobei eine Feder (37) die Walze (32c) in ihre am weitesten von der Platte (21) entfernte Stellung zurückholt.
  12. Spritzmaschine nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, daß die Platte an mindestens einem ihrer Ränder, die dem eine Walze (32b, 32c) aufweisenden Rand benachbart sind, einen Spritzlatz (28) besitzt.
  13. Spritzmaschine nach einem der Ansprüche 8 bis 12, dadurch gekennzeichnet, daß die Platte (21) mindestens ein Entlüftungsloch (29) aufweist, das das Entweichen der Spritzluft gestattet.
EP90905551A 1989-03-24 1990-03-21 Vorrichtung und verfahren zum herausschleudern einer pulverförmigen und/oder faserförmigen materialien bestehenden beschichtung und auf diese weise erhaltene beschichtung Expired - Lifetime EP0416086B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90905551T ATE91928T1 (de) 1989-03-24 1990-03-21 Vorrichtung und verfahren zum herausschleudern einer pulverfoermigen und/oder faserfoermigen materialien bestehenden beschichtung und auf diese weise erhaltene beschichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903899A FR2644712B1 (fr) 1989-03-24 1989-03-24 Machine a projeter un revetement comportant des matieres pulverulentes et/ou fibreuses, procede pour projeter un tel revetement et revetement ainsi obtenu
FR8903899 1989-03-24

Publications (2)

Publication Number Publication Date
EP0416086A1 EP0416086A1 (de) 1991-03-13
EP0416086B1 true EP0416086B1 (de) 1993-07-28

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EP90905551A Expired - Lifetime EP0416086B1 (de) 1989-03-24 1990-03-21 Vorrichtung und verfahren zum herausschleudern einer pulverförmigen und/oder faserförmigen materialien bestehenden beschichtung und auf diese weise erhaltene beschichtung

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EP (1) EP0416086B1 (de)
KR (1) KR920700080A (de)
AU (1) AU616114B2 (de)
BR (1) BR9005966A (de)
CA (1) CA2029904A1 (de)
DE (1) DE69002423T2 (de)
FR (1) FR2644712B1 (de)
HU (1) HUT58574A (de)
WO (1) WO1990011153A1 (de)

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DE4240287C1 (de) * 1992-12-01 1994-02-17 Veitsch Radex Ag Vorrichtung und Verfahren zum Aufbringen einer feuerfesten Isoliermasse auf die Wand eines metallurgischen Gefäßes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB844467A (en) * 1957-10-03 1960-08-10 Internat Meehanite Metal Compa Improvements relating to apparatus for applying repair material to furnace linings
US3229970A (en) * 1964-03-02 1966-01-18 Harbison Walker Refractories Metallurgical furnace lining
DE2617459C3 (de) * 1976-04-21 1981-02-19 Kurosaki Refractories Co., Ltd., Kitakyushu, Fukuoka (Japan) Vorrichtung zum Aufbringen einer feuerfesten Auskleidung auf die Innenfläche eines Ofens
AT361150B (de) * 1979-02-20 1981-02-25 Frings Hermann H Vorrichtung zum auskleiden von gefaessen der metallurgie mit stampfmassen
FR2619323B2 (fr) * 1987-04-03 1989-12-29 Daussan & Co Procede et installation pour projeter un revetement isolant et refractaire multicouche et revetement ainsi obtenu

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FR2644712B1 (fr) 1993-05-07
WO1990011153A1 (fr) 1990-10-04
AU5346490A (en) 1990-10-22
KR920700080A (ko) 1992-02-19
HUT58574A (en) 1992-03-30
CA2029904A1 (en) 1990-09-25
HU902948D0 (en) 1991-07-29
BR9005966A (pt) 1991-08-06
DE69002423T2 (de) 1994-02-03
EP0416086A1 (de) 1991-03-13
DE69002423D1 (de) 1993-09-02
FR2644712A1 (fr) 1990-09-28
AU616114B2 (en) 1991-10-17

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