EP0019288B1 - Procédé et appareil pour le mélange en continu de matériau sec et humide, particulièrement de mortier sec prêt à l'emploi - Google Patents

Procédé et appareil pour le mélange en continu de matériau sec et humide, particulièrement de mortier sec prêt à l'emploi Download PDF

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Publication number
EP0019288B1
EP0019288B1 EP80102740A EP80102740A EP0019288B1 EP 0019288 B1 EP0019288 B1 EP 0019288B1 EP 80102740 A EP80102740 A EP 80102740A EP 80102740 A EP80102740 A EP 80102740A EP 0019288 B1 EP0019288 B1 EP 0019288B1
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EP
European Patent Office
Prior art keywords
mixing chamber
wall
dry
dry material
blades
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
EP80102740A
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German (de)
English (en)
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EP0019288A1 (fr
Inventor
Karl Mathias Mayer
Rudolf Schäfer
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Wachter Kghindelang Baustoffwerk Bautechnik
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Wachter Kghindelang Baustoffwerk Bautechnik
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Publication date
Application filed by Wachter Kghindelang Baustoffwerk Bautechnik filed Critical Wachter Kghindelang Baustoffwerk Bautechnik
Priority to AT80102740T priority Critical patent/ATE12201T1/de
Publication of EP0019288A1 publication Critical patent/EP0019288A1/fr
Application granted granted Critical
Publication of EP0019288B1 publication Critical patent/EP0019288B1/fr
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/38—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means ; Producing cellular concrete
    • B28C5/381—Producing cellular concrete
    • B28C5/383—Producing cellular concrete comprising stirrers to effect the mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers

Definitions

  • the invention relates to a process for the continuous production of a mixture of coarse-grained to powdery dry material, in particular dry mortar, and wet material in a mixing chamber, which is preceded by a storage container for the dry material and a suction device for the mixed material, the dry material interspersed with air cushions and the pressurized wet material is fed to the mixing chamber and mixed by means of an agitator.
  • Such a method is already known from FR-A-2274340 and DE-U 7 046 623. known as an apparatus for performing this method.
  • DE-U-7 046 623 the dry material pressed out of a storage container by means of a screw conveyor fills into a vertical mixing tube in which a dry material scraper circles and which is followed by a feed pump. Since the conveying device for the dry material and the mixing device are driven by two separate motors, the mixing device can be completely emptied independently of the dry material to be conveyed. The mixture leaving the mixing device contains only a relatively small proportion of air pores, which leads to the disadvantages mentioned below. Lime cement plasters and cement plasters tend to form drying cracks after application to the surface to be plastered, which can occur after minutes or hours.
  • the invention has for its object to provide a method and an apparatus with which it is possible to prepare plasters or mortar that are particularly rich in air voids.
  • the object is achieved with a method of the type mentioned at the outset in that the mixing chamber is kept blocked against air leakage by guiding the dry material on the way from the storage container to the mixing chamber and the mixed material on the way to the suction device by narrowing slits causing the respective passageway.
  • the devices according to DE-A 2 117 000 or 2 437 231 have not led to tangible successes, because on the one hand the supply of water into the area of Worm drive and on the other hand the stirring device downstream of the feed pump could not prevent the dry material from being fed to the mixing device in an air-pore form.
  • the features according to the invention ensure that the air enclosed in the dry material cannot escape and, in particular, is distributed particularly homogeneously in the mixed material by the constrictions in the passageway during the mixing process.
  • the material to be mixed is processed in a plurality of spaces in the mixing chamber which are separated by partitions and which are connected to one another in each case via the slots mentioned, via gaps or holes.
  • the step-by-step treatment of the dry material while largely preventing degassing thus leads to end products with a high pore content.
  • the wet material is formed by a liquid and / or foam material and is introduced into the interior of the mixing chamber in finely divided form.
  • the invention advantageously provides that the mix is processed in the mixing chamber for at least 10 seconds. This increases the pore content of the end product.
  • the high density of the end product or the plaster is reduced, as a result of which the thermal insulation is improved; the water vapor diffusion ability is greatly increased, the drying on the wall surface takes place faster. Any condensation water in the wall can also evaporate more easily.
  • wet plaster the water retention capacity is improved because the air pores interrupt the pore channels; This means that drying cracks do not occur so quickly and the binders have the water required for setting longer available.
  • the plaster is easier to process because the air pores create a “creamier consistency”; the plaster is thus “more supple”.
  • the machinability i.e. the pumpability of the end material improves because the small pores on the wall, such as «ball bearings», reduce friction; this makes it possible to either continue to convey the end product with a pump or to reduce the wear of the pump by reducing the pressure.
  • the increased air porosity introduced improves the yield per unit weight in the end product, i. H. you can clean more square meters with the same amount of material.
  • the object of the invention is achieved in that the agitator has a turntable extending across the mixing chamber, the peripheral edge of which forms an annular slot adapted to the grain size of the dry material with the wall of the mixing chamber .
  • these features ensure very good mixing of the mix and, on the other hand, they ensure a homogeneous distribution of air pores, since any larger gas bubbles cannot escape, but are distributed because they cannot pass through the ring slots, which are always filled with mix.
  • the device according to the invention has the basic structure of a corresponding device according to DE-U 7 046 623, i.e. the mixing chamber, which is provided with an approximately vertical drive shaft and has a cylindrical feed space, is connected to an end face of the essentially horizontal storage container, the mixing chamber is advantageously expanded in a radial direction with respect to the cylindrical feed space and is essentially airtight by means of the interposition of a storage space. In this way, the introduced gaseous medium remains in the system and can be integrated into the mix.
  • a feed line for the liquid and / or the foam material can be provided in the interior of the mixing chamber, the outlet openings of which are distributed over the entire mixing chamber.
  • steam for example, ie a gaseous medium, can also be introduced into the dry material.
  • the feed line is annular and consists of a tube provided with bores, slots or other openings.
  • the intensive processing of the material and the ring-shaped feed line also reduce wear in the mixing chamber.
  • the ring-shaped feed line for the liquid and / or the foam material in the mixing chamber can be separated from the dry material feed by a stationary cylindrical deflecting wall.
  • the agitator of the mixing chamber can be attached to a stub shaft which is detachably connected to the coaxial drive shaft via a coupling.
  • the cylindrical feed space provided above the storage space is expediently provided with blades and / or knives attached to the drive shaft at least at its end facing the storage space; the blades and / or knives can be provided at least directly over the openings leading to the storage space.
  • a slot surrounding a jacket of the drive shaft is preferably provided as an opening for the passage of the dry goods into the storage space;
  • a further slot is expediently provided between a stationary housing wall surrounding the stub shaft at a distance and a disk optionally provided with blades.
  • the storage space just mentioned between the storage container and the mixing chamber is formed by the fact that e.g. dry matter falling through the small calibrated openings or slits only forms a barrier above the slits due to the dry goods conveyed from the storage container, so that the dry air that essentially passes through and passes through in free fall cannot vent. Air pockets or air bubbles under low pressure are thus formed in the storage space, which cannot escape upwards and are therefore entrained by the other dry material falling at the edge of the turntable and fed to the mixing room.
  • the turntable provided in the mixing chamber can have blades pointing upwards.
  • pins or plates extending parallel to the wall of the mixing chamber are preferably mounted in an upright position.
  • the slurry that has already been soaked is conveyed to the ring slot just mentioned and transported along the mixing chamber wall in the direction of the suction opening.
  • the turntable carrying the agitator it is possible for the turntable carrying the agitator to be provided with small bores, holes or other openings for extracting air approximately at a distance of one third of the blade length from the wall of the mixing chamber.
  • plates, mandrels or knives can be arranged parallel to the axis of rotation.
  • the bottom wall adjoining the mixing chamber wall can also be frustoconical and the central section of the bottom wall can run perpendicular to the axis of rotation; the section of the base wall running perpendicular to the axis of rotation can carry a ring designed as a chicane for the mixed material, the upper edge of which protrudes beyond the lower edge of the plates, mandrels or knives.
  • the chicane just mentioned creates another mixing effect with the plates, thorns or knives; Due to the swirling or swirling effect achieved at the outlet due to the suction device, the air sucked in via the small bores or holes is also incorporated into the mixture, so that the air pore content is also increased at this point.
  • the stub shaft supporting the agitator can be provided at its lower end with an adapter for a coupling of the suction device and between the coupling and the rectilinear section of the bottom wall a further annular slot can be provided for suctioning off the mixed material.
  • the upper wall of the mixing chamber is fastened to the housing wall surrounding the cylindrical feed space and either has a hinge for folding down the mixing chamber, or the mixing chamber is detachably attached to the upper wall.
  • the blades attached to the turntable can be attached with their inner edges to a cylinder which surrounds the stub shaft at a distance and which carries the disk that closes the storage space.
  • a shaft 1 of an electric motor-driven agitator is provided with a jacket 2 and accommodated in the center of a cylindrical housing 3.
  • the cylindrical housing 3 extends to the electric motor, not shown, and has a lateral opening 4.
  • the lateral opening 4 is provided with a throttle valve 6 which can be rotated in the direction of the arrow 5 and leads to a storage container 7, the worm drive of which is not shown in detail; the storage container 7 can be provided with a lid 8.
  • Knife-shaped wings 9 are attached to the casing 2 of the shaft 1 and “close” the space in the housing 3 at the upper edge 10 of the opening 4.
  • the space 11, which is essentially almost completely filled with the dry material, is closed on its lower side by a wall 12, which may also be interchangeable.
  • the wings or blades 13 cause a “stowage” of the dry material in the direction of the lower end of the shaft 1.
  • An annular gap or slot 14 is provided around the jacket 2 at the level of the wall 12, through which the dry material is metered in the mixing device becomes.
  • Immediately above the annular gap 2 blades 15 are attached to the jacket, which can also be set so that they constantly cause a supply of dry material in the downward direction.
  • Knife-like blades 16 can be provided above the blades 15, which can also be attached in an inclined position, such as the blades 13 on the casing 2, and stow the dry material in the direction of the mixing device.
  • the jacket 2 closes at the level of the lower edge 17 of the wall 12 and is z.
  • B rotatably connected by means of a connector 18 with a stub shaft 20.
  • the cylindrical housing wall 3 has a radially extending upper wall 22 above its lower edge 21, which e.g. welded to the wall 3 or otherwise firmly connected.
  • a storage space 23 the lower end of which is formed by a disk or a plate 24, on which blades 25 are fastened, which can be set so that they press the dry material towards the blades 15.
  • the disc 24 opens a further slot 26, which is provided between the housing wall 3 and the disc just mentioned.
  • the blades 25 can also be set so that the If dry goods are pressed into the storage space 23, air cushions or air bubbles arise above the dry goods in the room 23 and are under a slight excess pressure; due to the drainage of the dry material in the direction of the mixing chamber 30, these air bubbles or air cushions ensure that a particularly strong ventilation of the dry material can be carried out in the mixing room.
  • the disk 24 is fastened on a cylindrical tube piece 31, on the lower edge 32 of which a turntable 33 is fastened. On the turntable 33, as can be seen from FIG.
  • blades 34 are fastened, with which the mixture of the dripping dry material is mixed with a liquid, for example water 28.
  • the liquid is supplied via a feed line 29 (pipe ring), namely under pressure via an inlet connection 30 '.
  • a cylindrical deflecting wall 35 is provided in the mixing chamber, which is welded to the feed line, ie the pipe ring 29. In this way it is achieved that the dry material falls into the mixing chamber provided with blades 34 while still dry.
  • the blades 34 can be set to cause the material to be conveyed radially outwards and at the same time upwards.
  • wipers 36 are attached to the end of two blades 34, which expose the annular slot 37 to the cylindrical outer wall 38 of the mixing device.
  • These wipers can also have the shape shown in Fig. be bent so that it presses the mix - in this case it is already completely soaked - again in the direction of the stirring blades 34.
  • the agitator blades 34 are set in rotation in the same way as the blades 25.
  • the tubular baffle 35 is stationary and prevents the soaked mix from being pushed up.
  • the mix pressed down laterally in the ring slot 37 runs on a conical wall 40 in the direction of the agitator shaft 1 or the shaft stub 20.
  • the section 41 of the wall 40 which extends at right angles to the agitator shaft axis is provided with a further ring slot 42 through which the ready-prepared mix is in a suction device 43 or is sucked off from it by means of a pipeline provided with a feed pump.
  • a ring 45 (cylindrical shielding wall) is provided; at a distance from it, mandrels, plates or knives 46 rotate during operation of the agitator, so that a further mixing effect is achieved even in this area.
  • bores 50 are provided in the turntable 33, through which air present in the agitator area can be sucked off in the direction of the suction device 43. Since in the area of the further annular slot 42, whirling or swirling arises from the rotation of the agitator and through the movement with the feed pump or from the mixing device, the air sucked off via the bores 50 is brought into the mixture, so that its pore content is increased still further becomes.
  • the residence time of the dry material passing through the slot 14 in the mixing device until the material to be left through the further annular slot 42 is approximately 20 to 30 seconds, which not only increases the mixing effect significantly, but also the pore content, which, for. B. can be increased to 25%.
  • the mixing blades 34 primarily convey the mixture upwards due to its inclination and that the mixture can only flow out "in a mushy state" via the ring slot 37, not only in the mixing chamber but also over the further slot 26, 23 stowages of the dry goods, especially in the storage space. Accordingly, in addition to the dry goods, there are also air bubbles or air cushions in the storage space 23, which, as already noted, are under a low air pressure of a few tenths of a bar. This air is then fed to the dry material in the mixing room and mixed into the mixed material.
  • a hinge 51 is provided to secure the mixing device, e.g. to be able to fold down for cleaning purposes.
  • the air pore content in all ready-to-dry mortars can be increased, the air pore content of which can also be increased with batch mixers with a correspondingly long residence time.
  • decisive improvements can be achieved compared to the use of mixing tubes, that is to say continuous mixing devices.
  • So z. B. in a lime-gypsum plaster with an ordinary mixing tube an air pore content of only 7-10% compared to 15-20% can be achieved with the device according to the invention; the corresponding values for a lime-cement plaster are 7-12% compared to 20-25%. In the case of a known thermal insulation plaster, the values are 25-30% compared to 45-50%.
  • the frost resistance of the plaster is also improved by the increased air pore content.
  • the longer mixing time also means that all of the dry mortar additives have a longer dissolving time and are therefore more effective.

Claims (24)

1. Procédé pour la fabrication en continu d'un mélange d'un matériau sec allant du gros grain à la poudre fine, en particulier d'un mortier sec prêt à l'emploi, avec un matériau à l'état humide, dans une chambre de mélange (30) en amont de laquelle est disposé un réservoir de stockage (7) pour le matériau sec et en aval de laquelle est disposé un dispositif d'aspiration (43) pour le produit mélangé, dans lequel le matériau sec parsemé de matelas d'air ainsi que le matériau à l'état humide sont amenés à la chambre de mélange (30) et intimement mélangés au moyen d'un dispositif agitateur (33, 34), caractérisé en ce que la chambre de mélange (30) est maintenue fermée contre toute sortie d'air grâce au fait que le matériau sec, sur le trajet du réservoir d'approvisionnement (7) à la chambre de mélange, et le produit mélangé sur le trajet aboutissant au dispositif d'aspiration (43) sont guidés par des fentes (14, 26, 37) formant rétrécissements du parcous intéressé.
2. Procédé selon la revendication 1, caractérisé en ce que le produit de mélange est traité dans la chambre de mélange (30) à l'intérieur de plusieurs espaces séparés par des cloisons de séparation (33, 35, 45) qui sont en liaison les uns avec les autres par l'intermédiaire des fentes (37) susdites, par des intervalles ou par des trous.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le matériau à l'état humide est formé par un liquide et/ou par un matériau mousse et est introduit sous un état de fine division à l'intérieur de la chambre de mélange (30).
4. Procédé selon une quelconque des revendications 1 à 3, caractérisé en ce que le produit de mélange est traité pendant au moins 10 secondes dans la chambre de mélange (30).
5. Dispositif destiné à la mise en oeuvre du procédé selon une quelconque des revendications 1 à 4, comportant une chambre de mélange (30) pourvue d'un dispositif mélangeur en amont duquel est disposé un réservoir d'approvisionnement (7) pour le matériau sec et en aval duquel est disposé un dispositif d'aspiration (43) pour le produit mélangé, caractérisé en ce que le dispositif agitateur (33, 43) comporte un disque tournant (33), s'étendant par dessus la chambre de mélange (30), dont le bord circonférentiel forme avec la paroi (38) de la chambre de mélange (30) une fente (37) annulaire adaptée à la dimension des grains du matériau sec.
6. Dispositif selon la revendication 5, dans lequel la chambre de mélange (30) pourvue d'un arbre d'entraînement (1, 20) sensiblement vertical comporte un espace d'amenée (11) cylindrique, caractérisé en ce que la chambre de mélange (30) est élargie dans le sens radial par rapport à l'espace d'amenée (11) cylindrique et, par l'intermédiaire d'un espace de retenue (23) est obturée de façon sensiblement étanche à l'air.
7. Dispositif selon la revendication 5 ou 6, caractérisé en ce qu'à l'intérieur de la chambre de mélange (30) il est prévu une conduite d'arrivée (29) pour le liquide et/ou pour le matériau mousse, dont les ouvertures de sortie (28) sont réparties sur la totalité de la chambre de mélange (30).
8. Dispositif selon la revendication 7, caractérisé en ce que la conduite d'arrivée (29) est de forme annulaire et est constituée par un élément tubulaire pourvu de trous, de fentes ou autres ouvertures.
9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que la conduite d'arrivée (29) pour le liquide et/ou le matériau mousse prévue dans la chambre de mélange (30) est séparée de l'arrivée de matériau sec par une paroi déflectrice cylindrique (35) disposée à poste fixe.
10. Dispositif selon une quelconque des revendications 5 à 9, caractérisé en ce que le dispositif agitateur (33, 34) de la chambre de mélange (30) est fixé sur un bout d'arbre (20) qui est relié de façon séparable à l'arbre d'entraînement (1) coaxial par l'intermédiaire d'un élément d'accouplement (18).
11. Dispositif selon une quelconque des revendications 6 à 10, comportant une arrivée de matériau sec réalisée essentiellement par pesanteur, caractérisé en ce que l'espace d'amenée (11) cylindrique prévu au dessus de l'espace de retenue (23) est pourvu au moins à son extrémité dirigée vers l'espace de retenue (23) de palettes (15) et ou de couteaux (16) fixés sur l'arbre d'entraînement (11).
12. Dispositif selon la revendication 11, caractérisé en ce que les palettes (15) et/ou les couteaux sont prévus au moins immédiatement au dessus des ouvertures (14) conduisant à l'espace de retenue (23).
13. Dispositif selon la revendication 12, caractérisé en ce qu'il est prévu comme ouverture pour laisser passer le matériau sec pénétrant dans l'espace de retenue (23) une fente (14) entourant une chemise (2) de l'arbre d'entraînement (1).
14. Dispositif selon une quelconque des revendications 6 à 13, caractérisé en ce que pour laisser passer le matériau sec sortant de l'espace de retenue (23) et pénétrant dans la chambre de mélange (30), il est prévu une autre fente (26) ménagée entre une paroi de carter (3) fixe entourant à une certaine distance le bout d'arbre (20) et un disque (24) pourvue éventuellement de palettes (25).
15. Dispositif selon une quelconque des revendications 5 à 14, caractérisé en ce que, sur le disque tournant (33), sont disposées des palettes (34) dirigées vers le haut.
16. Dispositif selon la revendication 15, caractérisé en ce que des broches ou plaques (36) dirigées parallèlement à la paroi (38) de la chambre de mélange (30) sont montées dressées verticalement vers le haut au bord du disque tournant (33).
17. Dispositif selon la revendication 15 ou 16, caractérisé en ce que le disque tournant (33) est muni de petits percements, trous ou autres ouvertures (50) destinés à aspirer l'air, disposés à une distance de la paroi (38) de la chambre de mélange (30) sensiblement égale au 1/3 de la longueur des palettes.
18. Dispositif selon une quelconque des revendications 15 à 17, caractérisé en ce que des plaques, broches ou couteaux (46) sont disposés parallèlement à l'axe de rotation sur la face inférieure du disque tournant (33).
19. Dispositif selon une quelconque des revendications 5 à 18, caractérisé en ce que la paroi de fond (40) qui se raccorde à la paroi de la chambre de mélange (38) est en forme de tronc de cône, et que la partie médiane (41) de la paroi de fond est dirigée perpendiculairement à l'axe de rotation.
20. Dispositif selon la revendication 19, caractérisé en ce que la partie (41) de la paroi de fond (40) dirigée perpendiculairement à l'axe de rotation porte un anneau (45) jouant le rôle de chicane pour le produit mélangé, dont le bord supérieur fait saillie au delà de l'arête inférieure des plaques, broches ou couteaux (46).
21. Dispositif selon une quelconque des revendications 10 à 20, caractérisé en ce que le bout d'arbre (20) portant le dispositif agitateur (33, 34) est pourvu à son extrémité inférieure d'un raccord adaptateur pour un élément d'accouplement du dispositif d'aspiration (43) et qu'il est prévu entre l'élément d'accouplement et la partie (41) rectiligne de la paroi de fond (40) une autre fente annulaire (42) destinée à aspirer le produit de mélange.
22. Dispositif selon une quelconque des revendications 5 à 21, caractérisé en ce que la paroi supérieure (22) de la chambre de mélange (30) est fixée à la paroi de carter (3) entourant l'espace d'amenée (11) cylindrique et comporte une charnière permettant le rabattement de la chambre de mélange (30).
23. Dispositif selon une quelconque des revendications 5 à 21, caractérisé en ce que la paroi supérieure (22) de la chambre de mélange (30) est fixée à la paroi de carter (3) entourant l'espace d'amenée (11) cylindrique et que la chambre de mélange (30) est montée de façon séparable sur la paroi supérieure (22).
24. Dispositif selon une quelconque des revendications 6 à 23, caractérisé en ce que les palettes (34) fixées sur le disque tournant (33) sont fixées par leurs bords intérieurs à un cylindre (31) entourant à une certaine distance le bout d'arbre (20) qui porte le disque (24) fermant l'espace de retenue (23).
EP80102740A 1979-05-17 1980-05-16 Procédé et appareil pour le mélange en continu de matériau sec et humide, particulièrement de mortier sec prêt à l'emploi Expired EP0019288B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80102740T ATE12201T1 (de) 1979-05-17 1980-05-16 Verfahren und vorrichtung zum kontinuierlichen mischen von trocken- und nassgut, insbesondere von trockenfertigmoertel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2920025A DE2920025C2 (de) 1979-05-17 1979-05-17 Vorrichtung zum kontinuierlichen Herstellen und Fördern von Putzmörtel oder dergleichen
DE2920025 1979-05-17

Publications (2)

Publication Number Publication Date
EP0019288A1 EP0019288A1 (fr) 1980-11-26
EP0019288B1 true EP0019288B1 (fr) 1985-03-20

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EP80102740A Expired EP0019288B1 (fr) 1979-05-17 1980-05-16 Procédé et appareil pour le mélange en continu de matériau sec et humide, particulièrement de mortier sec prêt à l'emploi

Country Status (5)

Country Link
US (1) US4436430A (fr)
EP (1) EP0019288B1 (fr)
AT (1) ATE12201T1 (fr)
DE (1) DE2920025C2 (fr)
ES (1) ES8101458A1 (fr)

Families Citing this family (39)

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Publication number Priority date Publication date Assignee Title
DE2935007C2 (de) * 1979-08-30 1985-02-21 Wachter Kg Hindelang Baustoffwerk Bautechnik, 8973 Hindelang Vorrichtung zum kontinuierlichen Herstellen und Fördern von Putzmörtel o.dgl.
AT389911B (de) * 1981-08-07 1990-02-26 Bug Betriebs & Grundbesitz Vorrichtung zum herstellen verarbeitungsbereiten nassestrichs
GB2139517B (en) * 1983-05-05 1986-07-09 Coal Ind Method of and apparatus for producing aerated cementitious compositions
DE3335852A1 (de) * 1983-10-03 1985-04-11 Steven Stockport Cheshire Jodrell Maschine zum anmachen von moertel
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DE2920025A1 (de) 1980-11-20
DE2920025C2 (de) 1982-11-11
ATE12201T1 (de) 1985-04-15
ES492072A0 (es) 1980-12-16
US4436430A (en) 1984-03-13
ES8101458A1 (es) 1980-12-16
EP0019288A1 (fr) 1980-11-26

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