EP0031559A2 - Apparatus for heating sand, gravel or similar granular materials - Google Patents

Apparatus for heating sand, gravel or similar granular materials Download PDF

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Publication number
EP0031559A2
EP0031559A2 EP80108049A EP80108049A EP0031559A2 EP 0031559 A2 EP0031559 A2 EP 0031559A2 EP 80108049 A EP80108049 A EP 80108049A EP 80108049 A EP80108049 A EP 80108049A EP 0031559 A2 EP0031559 A2 EP 0031559A2
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EP
European Patent Office
Prior art keywords
heating gas
heating
batteries
channels
profile
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
EP80108049A
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German (de)
French (fr)
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EP0031559A3 (en
EP0031559B1 (en
Inventor
Kai Juhani Lainio
Antti Juhani Koivupalo
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Partek Oy AB
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Partek Oy AB
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Priority to AT80108049T priority Critical patent/ATE7671T1/en
Publication of EP0031559A2 publication Critical patent/EP0031559A2/en
Publication of EP0031559A3 publication Critical patent/EP0031559A3/en
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Publication of EP0031559B1 publication Critical patent/EP0031559B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
    • F28C3/12—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid
    • F28C3/14—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid the particulate material moving by gravity, e.g. down a tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
    • B28C7/0023—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust by heating or cooling
    • B28C7/003—Heating, e.g. using steam

Definitions

  • This invention relates to a device for heating sand, gravel or similar granular material, which comprises arched troughs arranged in the silo of the material to be heated for introducing the heating gas into the material and for discharging the same.
  • a device for heating concrete aggregates is already known, in which a warm air blower is connected to the lower part of the silo and in the silo vault channels, which have the shape of an inverted V in cross section, are arranged one above the other, via which the air is introduced into the silo, and either run crosswise or parallel to one another, in the former case lying directly on top of one another, while in the latter case short spacers are arranged between them.
  • the parallel arched troughs are arranged so that their ends located in the middle of the silo form a zigzag line, while in the crossed arched troughs every second ends near an intersection.
  • the disadvantage of these devices is that the arched profile channels make the flow of the filling material difficult and do not ensure a sufficiently effective uniform distribution of the heating gas over the filling material.
  • Grain dryers are also known, in which the vaulted profile channels with a V cross-section are arranged so as to overlap in the manner set out above that every second channel is connected to the supply air duct and every second channel is connected to the exhaust air channel.
  • every second channel is connected to the supply air duct and every second channel is connected to the exhaust air channel.
  • the present invention is therefore based on the object to provide a device for heating sand, gravel or similar granular material device of the aforementioned type, in which the heating extends only to a precisely limited spatial area, even if it is in a storage or Intermediate silo takes place, the volume of which considerably exceeds the required heating space, so that the heating takes place so intensively that it may be in a continuous process, i. H. can be done continuously.
  • the device according to the invention is characterized in that the vaulted profile troughs serving for supplying the heating gas on the one hand and the vaulted profile troughs serving for discharging the heating gas on the other hand are combined to form alternately arranged batteries comprising vertical vaulted troughs located one above the other, between which there are relatively thin batteries Layers of the goods to be warmed.
  • the heating can be carried out by blowing heating gas, for example hot air or flue gas, through the layers within such a period of time that the desired average temperature of the layer is reached before the temperature of the layer on the heating gas discharge side is significantly higher their initial value has risen.
  • heating gas for example hot air or flue gas
  • the flow of the material to be heated is designed so that no mixing takes place, and the flow of the heating gas is such that the end face is very large over the entire flow length and the flow path is short. Because of this and because of the small heating zone volume, the device operates at high speed, and the need for thermal insulation between the environment and the heating system is completely insignificant, not least because the heating zone is more or less completely in the middle of the material to be heated, depending on the size of the silo.
  • each vaulted profile gutter battery used for introducing heating gas is connected to a heating gas distribution chamber, which in turn is connected to the heating gas supply line.
  • a heating gas distribution chamber which in turn is connected to the heating gas supply line.
  • the vault profile channel batteries used to discharge the heating gas one end is either connected to a collecting chamber, which in turn opens into the discharge duct, or the individual vault profile channel battery is connected to its own fume cupboard, which in turn is in its own, with a Throttle valve for regulating the heating gas flow provided discharge shaft.
  • the ilölbprofilrinnen batteries are loosely attached to stationary guide pairs arranges, which have openings leading from the distribution chamber to the vault profile channel batteries serving for the introduction of heating gas and from the vault profile channel batteries serving to discharge the heating gas to the collecting chamber or to the discharge channels.
  • the arch profile channel batteries are preferably formed by two or more arch profile cassettes located one above the other, which in turn consist of several arch profile channels located one above the other. In this way, these parts that are subject to wear can be easily replaced. All you have to do is lift out the worn cassette and insert a new one.
  • each of the arch profile channel batteries used for introducing heating gas can be provided with its own throttle valve for regulating the gas flow, or between the arch profile channel batteries there can be limiting plates for reducing the heating gas flow in the areas in which the flow of the material to be heated is restricted or prevented, or obstacles which slow down the flow of material can be arranged between the arch profile channel batteries and serve to compensate for the flow rate of the material to be heated in the individual material layers.
  • the heating device according to the invention shown in FIGS. 1 to 3 comprises several arched profile cassettes 2, 3 arranged in the aggregate silo 1 or in a corresponding container, which are inserted at short intervals parallel to one another between guide pairs 4, by means of which they are supported at both ends.
  • Vertical layers 5 of the aggregate to be heated are formed between the arch profile channel batteries 2, 3 and can flow freely down to the removal hatch 6 of the silo.
  • the guides 4 are fastened on one side of the arch profile channel batteries 2, 3 to the heating medium injection duct 7, which has an inlet opening 8 in every second arch profile channel battery 2.
  • a supply pipe 14 connected to the heating gas source is connected to the blowing channel 7, via which the heating gas is passed to the blowing channel 7 and from there via the arch profile channel batteries 2 into the additive to be heated.
  • the guides 4 are fastened to the exhaust ducts 11, which in the case of the arch profile channel batteries 3, which do not have inlet openings 8 on the inlet channel 7 are connected, each have a vent 1 0 .
  • the heating gas for example hot air or a flue gas / air mixture, is introduced into the additive layers 5 via the pipe 14 and the injection duct 7 and also via the arch profile channel batteries 2 connected to it.
  • the heating gas flows through the aggregate layers 5 into the vault profile channel batteries 3 connected to the extraction channels 11 and via these into the extraction channels 11.
  • the extraction channels are each connected to their own extraction duct 12, and each of these extraction ducts 12 is equipped with one Flow control valve 13 provided. With these control flaps 13, when using a continuously operating heating device, the heating gas flow through the individual material layers 5 can be regulated in such a way that it corresponds to the average flow rate of the additive in the individual additive layers 5.
  • the aggregate is heated in batches and especially in a special container that is smaller than the actual silo and corresponds to the volume of the aggregate batch to be heated, the control flaps 13 are unnecessary, since the aggregate is then in the rooms 5 all the time remains between the arch profile channel batteries 2, 3.
  • FIGS. 4 and 5 show the arch profile cassette 2, 3 used in the heating device according to the invention on a larger scale.
  • a cassette consists of arched troughs 22, which are arranged at appropriate intervals and are attached to vertical brackets 21 and which have the shape of an upside down V in cross section.
  • the arched profile channels can be attached to the brackets 21, for example by welding.
  • the individual cassette comprises four superimposed arch profile channels 22, and in the embodiment shown in FIGS. 1 and 2, the individual arch profile channel battery 2, 3 comprises three superimposed arch profile cassettes.
  • the heating device according to the invention can be used either as a continuous or as a batch device.
  • continuous operation the heater is placed inside the silo near the floor. With each removal, the amount of heating gas required to heat the amount of substance to be removed from the silo is blown into the heating device each time it is removed.
  • batch operation on the other hand, the net capacity of the heating container corresponds to the maximum batch.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Secondary Cells (AREA)
  • Road Paving Structures (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Grinding (AREA)
  • Baking, Grill, Roasting (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Processing Of Solid Wastes (AREA)
  • Furnace Details (AREA)

Abstract

1. Apparatus for heating sand, gravel or similar granular material, comprising arcuately profiled channels (22) arranged in a receptacle (1) containing the material to be heated for feeding a heating gas into the material, and further arcuately profiled channels (22) for discharging the heating gas from the material, characterized in that the arcuately profiled channels (22) which serve to feed the gas into the material as well as the arcuately profiled channels (22) which serve to evacuate the gas from the material are grouped in alternately laterally adjacent batteries (2, 3) each comprising several vertically superposed arcuately profiled channels and forming vertical partition walls between which the material to be heated is arranged in relatively thin layers (5).

Description

Diese Erfindung betrifft eine zum Anwärmen von Sand, Kies oder ähnlichem körnigem Gut dienende Vorrichtung, die im Silo des anzuwärmenden Materials angeordnete Wölbprofilrinnen zum Eintragen des Aufheizgases in das Material und zum Ableiten aus demselben umfaßt.This invention relates to a device for heating sand, gravel or similar granular material, which comprises arched troughs arranged in the silo of the material to be heated for introducing the heating gas into the material and for discharging the same.

Man kennt bereits eine zum Anwärmen von Betonzuschlagstoffen dienende Vorrichtung, bei der ans Silounterteil ein Warmluftgebläse angeschlossen ist und im Silo Wölbprofilrinnen, die im Querschnitt die Form eines umgekehrten V haben, übereinander angeordnet sind, über die der Lufteintrag in den Silo erfolgt, und die entweder über Kreuz oder parallel zueinander verlaufen, wobei sie im erstgenannten Falle unmittelbar aufeinander liegen, während im letztgenannten Falle zwischen ihnen kurze Abstandhalter angeordnet sind. Die parallelen Wölbprofilrinnen sind so gestuft angeordnet, daß ihre im Silomittelteil befindlichen Enden eine Zickzacklinie bilden, während bei den gekreuzten Wölbprofilrinnen jede zweite in der Nähe einer Kreuzung endet. Der Nachteil dieser Vorrichtungen liegt darin, daß die Wölbprofilrinnen das Fließen des Füllgutes erschweren und kein ausreichend effektives gleichmäßiges Verteilen des Aufheizgases auf das Füllgut gewährleisten.A device for heating concrete aggregates is already known, in which a warm air blower is connected to the lower part of the silo and in the silo vault channels, which have the shape of an inverted V in cross section, are arranged one above the other, via which the air is introduced into the silo, and either run crosswise or parallel to one another, in the former case lying directly on top of one another, while in the latter case short spacers are arranged between them. The parallel arched troughs are arranged so that their ends located in the middle of the silo form a zigzag line, while in the crossed arched troughs every second ends near an intersection. The disadvantage of these devices is that the arched profile channels make the flow of the filling material difficult and do not ensure a sufficiently effective uniform distribution of the heating gas over the filling material.

Es sind auch Getreidetrockner bekannt, bei denen die Wölbprofilrinnen mit V-Querschnitt in der oben dargelegten Weise so übereinandergreifend angeordnet sind, daß jede zweite Rinne an den Zuluftkanal und jede zweite Rinne an den Abluftkanal angeschlossen ist. Infolge des gegenseitigen überstandes der Rinnen erfolgt im Trockner ein kräftiges Mischen, so daß das Getreide beim Trocknen Verdampfungswärme verbraucht und eine starke Staubbildung zu verzeichnen ist. Dies ist ein Nachteil wenn es sich beim Trocknungsgut um Sand oder Kies handelt und die Aufgabe in bloßem Anwärmen besteht.Grain dryers are also known, in which the vaulted profile channels with a V cross-section are arranged so as to overlap in the manner set out above that every second channel is connected to the supply air duct and every second channel is connected to the exhaust air channel. As a result of the mutual overhang of the channels, vigorous mixing takes place in the dryer, so that the grain consumes heat of evaporation during drying and there is a lot of dust formation. This is a disadvantage if the material to be dried is sand or gravel and the task is to simply warm it up.

Der vorliegenden Erfindung liegt somit die Aufgabe zugrunde, eine zum Anwärmen von Sand, Kies oder ähnlichem körnigem Material dienende Vorrichtung des vorgenannten Typs zu schaffen, bei der sich das Anwärmen nur auf einen genau begrenzten räumlichen Bereich erstreckt, selbst wenn es in einem Lager- oder Zwischensilo erfolgt, dessen Volumen den erforderlichen Aufheizraum beträchtlich übersteigt, so daß das Anwärmen derart intensiv erfolgt, daß es gegebenenfalls im Durchlaufverfahren, d. h. kontinuierlich erfolgen kann.The present invention is therefore based on the object to provide a device for heating sand, gravel or similar granular material device of the aforementioned type, in which the heating extends only to a precisely limited spatial area, even if it is in a storage or Intermediate silo takes place, the volume of which considerably exceeds the required heating space, so that the heating takes place so intensively that it may be in a continuous process, i. H. can be done continuously.

Die erfindungsgemäße Vorrichtung ist dadurch gekennzeichnet, daß die zum Zuführen des Aufheizgases dienenden Wölbprofilrinnen zum einen und die zum Ableiten des Aufheizgases dienenden Wölbprofilrinnen zum anderen zu nebeneinander abwechselnd angeordneten, mehrere übereinander befindliche Wölbprofilrinnen umfassenden, vertikale Trennwände bildenden Batterien zusammengefaßt sind, zwischen denen sich verhältnismäßig dünne Schichten des zu wärmenden Guts befinden.The device according to the invention is characterized in that the vaulted profile troughs serving for supplying the heating gas on the one hand and the vaulted profile troughs serving for discharging the heating gas on the other hand are combined to form alternately arranged batteries comprising vertical vaulted troughs located one above the other, between which there are relatively thin batteries Layers of the goods to be warmed.

Infolge dieser relativ dünnen Gutschichten kann das Anwärmen durch Durchblasen von Aufheizgas, zum Beispiel von Heißluft oder Rauchgas, durch die Schichten innerhalb einer solchen Zeitperiode erfolgen, daß die angestrebte durchschnittliche Temperatur der Schicht erreicht wird bevor die Temperatur der Schicht auf der Aufheizungsgas-Abführungsseite wesentlich über ihren Anfangswert hinaus gestiegen ist. Dies bietet den Vorteil, daß zum einen die im anzuwärmenden Gut enthaltene Feuchte, zum Beispiel die in Betonzuschlägen enthaltene Feuchte, keine Energieverluste in Form von Verdampfungswärmeabgang mit dem Abgas verursachen kann, da die einblasseitig verdampfende Feuchte in den kalten Schichten der Ausblasseite kondensiert, und daß zum anderen der einblasseitig freigesetzte, vom Aufheizgas mitgerissene Staub ausblasseitig in den feuchten Schichten wieder gebunden wird, so daß trotz hoher Strömungsgeschwindigkeit des Aufheizgases keine Staubabscheidungsvorrichtungen erforderlich sind.As a result of these relatively thin layers of material, the heating can be carried out by blowing heating gas, for example hot air or flue gas, through the layers within such a period of time that the desired average temperature of the layer is reached before the temperature of the layer on the heating gas discharge side is significantly higher their initial value has risen. This has the advantage that, on the one hand, the moisture contained in the material to be heated, for example the moisture contained in concrete aggregates, cannot cause energy losses in the form of heat of vaporization with the exhaust gas, since the moisture evaporating on the inlet side condenses in the cold layers of the outlet side, and that on the other hand, the dust released on the blow-in side, entrained by the heating gas, is bound again in the moist layers on the blow-out side, so that, despite the high flow rate of the heating gas, no dust separation devices are required.

Bei der erfindungsgemäßen Vorrichtung ist der Fluß des anzuwärmenden Guts so angelegt, daß kein Mischen erfolgt, und die Strömung des Aufheizgases so, daß die Stirnfläche über die gesamte Strömungslänge sehr groß und der Strömungsweg kurz ist. Dadurch und infolge des geringen Heizzonenvolumens arbeitet die Vorrichtung mit hoher Geschwindigkeit, und der Bedarf an Wärmedämmung zwischen Umgebung und Heizungssystem ist völlig unbedeutend, nicht zuletzt auch durch den Umstand, daß sich die Heizzone je nach Silogröße mehr oder weniger vollständig inmitten des anzuwärmenden Guts befindet.In the device according to the invention, the flow of the material to be heated is designed so that no mixing takes place, and the flow of the heating gas is such that the end face is very large over the entire flow length and the flow path is short. Because of this and because of the small heating zone volume, the device operates at high speed, and the need for thermal insulation between the environment and the heating system is completely insignificant, not least because the heating zone is more or less completely in the middle of the material to be heated, depending on the size of the silo.

Nach einer vorteilhaften Ausführungform der erfindungsgemäßen Vorrichtung ist das eine Ende jeder zum Eintragen von Aufheizgas dienenden Wölbprofilrinnen-Batterie an eine Aufheizgas-Verteilerkammer angeschlossen, die wiederum an die Aufheizgas-Zuführungsleitung angeschlossen ist. Auch bei den zum Austragen des Aufheizgases dienenden Wölbprofilrinnen-Batterien ist jeweils das eine Ende entweder an eine Sammelkammer angeschlossen, die wiederum in den Abzugsschacht mündet, oder die einzelne Wölbprofilrinnen-Batterie ist an einen eigenen Abzugskanal angeschlossen, der wiederum in einen eigenen, mit einer Drosselklappe zum Regulieren des Aufheizgasstromes versehenen Abzugsschacht mündet.According to an advantageous embodiment of the device according to the invention, one end of each vaulted profile gutter battery used for introducing heating gas is connected to a heating gas distribution chamber, which in turn is connected to the heating gas supply line. Also in the case of the vault profile channel batteries used to discharge the heating gas, one end is either connected to a collecting chamber, which in turn opens into the discharge duct, or the individual vault profile channel battery is connected to its own fume cupboard, which in turn is in its own, with a Throttle valve for regulating the heating gas flow provided discharge shaft.

Nach einer vorteilhaften Ausführungsform der erfindungsgemäßen Vorrichtung sind die ilölbprofilrinnen-Batterien lose an stationären Führungspaaren angeordnet, die von der Verteilerkammer zu den zum Eintragen von Aufheizgas dienenden Wölbprofilrinnen-Batterien hin führende Öffnungen sowie von den zum Austragen des Aufheizgases dienenden Wölbprofilrinnen-Batterien zur Sammelkammer oder zu den Abzugskanälen hin führende Öffnungen aufweisen.According to an advantageous embodiment of the device according to the invention, the ilölbprofilrinnen batteries are loosely attached to stationary guide pairs arranges, which have openings leading from the distribution chamber to the vault profile channel batteries serving for the introduction of heating gas and from the vault profile channel batteries serving to discharge the heating gas to the collecting chamber or to the discharge channels.

Die Wölbprofilrinnen-Batterien werden vorzugsweise von zwei oder mehr übereinander befindlichen Wölbprofilkassetten gebildet, die wiederum aus mehreren übereinander befindlichen Wölbprofilrinnen bestehen. Auf diese Weise können diese dem Verschleiß ausgesetzten Teile leicht ausgewechselt werden. Man braucht hierzu die abgenutzte Kassette nur herauszuheben und eine neue einzusetzen.The arch profile channel batteries are preferably formed by two or more arch profile cassettes located one above the other, which in turn consist of several arch profile channels located one above the other. In this way, these parts that are subject to wear can be easily replaced. All you have to do is lift out the worn cassette and insert a new one.

Zum Ausgleichen der Aufheizgas-Strömung und des Flusses des anzuwärmenden Guts kann jede der zum Eintragen von Aufheizgas dienenden Wölbprofilrinnen-Batterien mit einer eigenen Drosselklappe zum Regulieren des Gasstromes versehen werden, oder zwischen die Wölbprofilrinnen-Batterien können Begrenzungsbleche zur Verringerung des Aufheizgasstromes in den Bereichen, in denen der Fluß des anzuwärmenden Guts eingeschränkt oder verhindert ist, eingesetzt werden, oder zwischen den Wölbprofilrinnen-Batterien können den Materialfluß bremsende Hindernisse angeordnet werden, die dazu dienen, die Fließgeschwindigkeit des anzuwärmenden Guts in den einzelnen Gutschichten auszugleichen.In order to balance the heating gas flow and the flow of the material to be heated, each of the arch profile channel batteries used for introducing heating gas can be provided with its own throttle valve for regulating the gas flow, or between the arch profile channel batteries there can be limiting plates for reducing the heating gas flow in the areas in which the flow of the material to be heated is restricted or prevented, or obstacles which slow down the flow of material can be arranged between the arch profile channel batteries and serve to compensate for the flow rate of the material to be heated in the individual material layers.

Im folgenden soll die Erfindung unter Bezugnahme auf das in den beigefügten Zeichnungen dargestellte Ausführungsbeispiel der erfindungsgemäßen Vorrichtung näher beschrieben werden. Es zeigen:

  • Fig. 1 einen Zuschlagstoff-Silo mit eingebauter erfindungsgemäßer Aufheizvorrichtung im Vertikalschnitt;
  • Fig. 2 den gleichen Silo im Vertikalschnitt, der rechtwinklig zum Schnitt von Fig. 1 geführt ist;
  • Fig. 3 die Vorrichtung nach Fig. 1 und 2 im Horizontalschnitt längs der in Fig. 1 angedeuteten Geraden III-III;
  • Fig. 4 eine einzelne Wölbprofilkassette seitlich betrachtet;
  • Fig. 5 die gleiche Kassette stirnseitig betrachtet, wobei in letzterer Figur punktgestrichelt die zur gleichen Wölbprofilrinnen-Batterie gehörende obere und untere Kassette dargestellt sind;
  • Fig. 6 einen Teil der Aufheizgas-Verteilerkammer mit Montageführungen und Einblasöffnungen für die Wölbprofilrinnen-Batterien;
  • Fig. 7 einen Schnitt längs der in Fig. 6 angedeuteten Geraden VII-VII;
  • Fig. 8 eine modifizierte Ausführungsform und 9 der erfindungsgemäßen Vorrichtung in entsprechender Darstellung wie in Fig. 1 und 2.
The invention will be described in more detail below with reference to the exemplary embodiment of the device according to the invention shown in the accompanying drawings. Show it:
  • Figure 1 shows an aggregate silo with built-in heating device according to the invention in vertical section.
  • Figure 2 shows the same silo in vertical section, which is guided at right angles to the section of Figure 1;
  • 3 shows the device according to FIGS. 1 and 2 in horizontal section along the straight line III-III indicated in FIG. 1;
  • 4 shows a single arch profile cassette viewed from the side;
  • 5 shows the same cassette viewed on the end face, the upper and lower cassette belonging to the same arch profile channel battery being shown in broken lines in the latter figure;
  • 6 shows a part of the heating gas distribution chamber with mounting guides and injection openings for the arch profile channel batteries;
  • 7 shows a section along the line VII-VII indicated in FIG. 6;
  • 8 shows a modified embodiment and 9 of the device according to the invention in a corresponding representation as in FIGS. 1 and 2.

Die in Fig. 1 bis 3 gezeigte erfindungsgemäße Heizvorrichtung umfaßt mehrere im Zuschlagstoff-Silo 1 oder in einem entsprechenden Behälter angeordneten Wölbprofilkassetten 2, 3, die in geringen Abständen parallel zueinander zwischen Führungspaare 4 eingesetzt sind, durch die sie an beiden Enden abgestützt werden. Zwischen den Wölbprofilrinnen-Batterien 2, 3 bilden sich vertikale Schichten 5 des aufzuheizenden Zuschlagstoffes, die ungehindert nach unten zur Entnahmeluke 6 des Silos hin fließen können. Die Führungen 4 sind auf der einen Seite der Wölbprofilrinnen-Batterien 2, 3 an dem Heizmedium-Einblaskanal 7 befestigt, der bei jeder zweiten Wölbprofilrinnen-Batterie 2 eine Eintrittsöffnung 8 aufweist. An den Einblaskanal 7 ist ein mit der Aufheizgasquelle verbundenes Zuführungsrohr 14 angeschlossen, über welches das Aufheizgas zum Einblaskanal 7 und von dort weiter über die Wölbprofilrinnen-Batterien 2 in den anzuwärmenden Zuschlagstoff geleitet wird. Auf der entgegengesetzten Seite sind die Führungen 4 an den Abzugskanälen 11 befestigt, die bei den Wölbprofilrinnen-Batterien 3, die nicht über Eintrittsöffnungen 8 an den Einblaskanal 7 angeschlossen sind, je eine Abzugsöffnung 10 haben.The heating device according to the invention shown in FIGS. 1 to 3 comprises several arched profile cassettes 2, 3 arranged in the aggregate silo 1 or in a corresponding container, which are inserted at short intervals parallel to one another between guide pairs 4, by means of which they are supported at both ends. Vertical layers 5 of the aggregate to be heated are formed between the arch profile channel batteries 2, 3 and can flow freely down to the removal hatch 6 of the silo. The guides 4 are fastened on one side of the arch profile channel batteries 2, 3 to the heating medium injection duct 7, which has an inlet opening 8 in every second arch profile channel battery 2. A supply pipe 14 connected to the heating gas source is connected to the blowing channel 7, via which the heating gas is passed to the blowing channel 7 and from there via the arch profile channel batteries 2 into the additive to be heated. On the opposite side, the guides 4 are fastened to the exhaust ducts 11, which in the case of the arch profile channel batteries 3, which do not have inlet openings 8 on the inlet channel 7 are connected, each have a vent 1 0 .

Das Aufheizgas, zum Beispiel Heißluft oder ein Rauchgas-Luft-Gemisch, wird über das Rohr 14 und den Einblaskanal 7 sowie über die daran angeschlossenen Wölbprofilrinnen-Batterien 2 in die Zuschlagstoff-Schichten 5 eingetragen. Das Aufheizgas strömt durch die Zuschlagstoff-Schichten 5 in die an die Abzugskanäle 11 angeschlossenen Wölbprofilrinnen-Batterien 3 und über diese in die Abzugskanäle 11. Die Abzugskanäle sind beim dargestellten Ausführungsbeispiel an je einen eigenen Abzugsschacht 12 angeschlossen, und jeder dieser Abzugsschächte 12 ist mit einer Strömungsregelklappe 13 versehen. Mit diesen Regelklappen 13 kann bei Verwendung einer kontinuierlich arbeitenden Anwärmvorrichtung der Aufheizgas-Strom durch die einzelnen Materialschichten 5 so reguliert werden, daß er der durchschnittlichen Fließgeschwindigkeit des Zuschlagstoffes in den einzelnen Zuschlagstoff-Schichten 5 entspricht. Erfolgt hingegen das Anwärmen des Zuschlagstoffes chargenweise und zumal in einem besonderen Behälter, der kleiner als der eigentliche Silo ist und dem Volumen der anzuwärmenden Zuschlagstoff-Charge entspricht, erübrigen sich die Regelklappen 13, da ja dann der Zuschlagstoff die ganze Zeit über in den Räumen 5 zwischen den Wölbprofilrinnen-Batterien 2, 3 verharrt.The heating gas, for example hot air or a flue gas / air mixture, is introduced into the additive layers 5 via the pipe 14 and the injection duct 7 and also via the arch profile channel batteries 2 connected to it. The heating gas flows through the aggregate layers 5 into the vault profile channel batteries 3 connected to the extraction channels 11 and via these into the extraction channels 11. In the exemplary embodiment shown, the extraction channels are each connected to their own extraction duct 12, and each of these extraction ducts 12 is equipped with one Flow control valve 13 provided. With these control flaps 13, when using a continuously operating heating device, the heating gas flow through the individual material layers 5 can be regulated in such a way that it corresponds to the average flow rate of the additive in the individual additive layers 5. If, on the other hand, the aggregate is heated in batches and especially in a special container that is smaller than the actual silo and corresponds to the volume of the aggregate batch to be heated, the control flaps 13 are unnecessary, since the aggregate is then in the rooms 5 all the time remains between the arch profile channel batteries 2, 3.

Fig. 4 und 5 zeigen die in der erfindungsgemäßen Heizvorrichtung verwendete Wölbprofilkassette 2, 3 in einem größeren Maßstab. Eine solche Kassette besteht aus in passenden Abständen angeordneten, an vertikalen Halterungen 21 befestigten Wölbprofilrinnen 22, welche im Querschnitt die Form eines auf dem Kopf stehenden V haben. Die Wölbprofilrinnen können beispielsweise durch Anschweißen an den Halterungen 21 befestigt werden. Bei der in Fig. 4 und 5 gezeigten Ausführungsform umfaßt die einzelne Kassette vier übereinander angeordnete Wölbprofilrinnen 22, und bei der in Fig. 1 und 2 dargestellten Ausführungsform umfaßt die einzelne Wölbprofilrinnen-Batterie 2, 3 drei übereinander angeordnete Wölbprofilkassetten.4 and 5 show the arch profile cassette 2, 3 used in the heating device according to the invention on a larger scale. Such a cassette consists of arched troughs 22, which are arranged at appropriate intervals and are attached to vertical brackets 21 and which have the shape of an upside down V in cross section. The arched profile channels can be attached to the brackets 21, for example by welding. In the embodiment shown in FIGS. 4 and 5, the individual cassette comprises four superimposed arch profile channels 22, and in the embodiment shown in FIGS. 1 and 2, the individual arch profile channel battery 2, 3 comprises three superimposed arch profile cassettes.

In Fig. 7 und 8 ist der Aufheizgas-Einblaskanal 7 dargestellt, der auf geeignete, nicht dargestellte Weise an der Silokonstruktion 1 abgestützt ist. Am Einblaskanal 7 sind U-förmige Führungen 4 für die Wölbprofilrinnen-Batterien 2, 3 befestigt. An jeder zweiten Führung 4 befindet sich eine Öffnung 8,7 and 8 show the heating gas injection duct 7, which is supported on the silo construction 1 in a suitable manner, not shown. U-shaped guides 4 for the arch profile channel batteries 2, 3 are fastened to the blowing channel 7. There is an opening 8 on every second guide 4,

über welche das Aufheizgas unter die Wölbprofilrinnen 22 der Wölbprofilrinnen-Batterie 2 strömen kann. An den Abzugskanälen 11, die gleichfalls an der Silokonstruktion abgestützt sind, sind an entsprechenden Stellen die Führungen 4 für die Wölbprofilrinnen-Batterien 2, 3 befestigt, und in der Abzugskanalwand ist auf entsprechende Weise bei jeder zweiten Führung 4 eine Öffnung 1o vorhanden, wobei jedoch die öffnungen 1o gegenüber den Einblaskanalöffnungen 8 versetzt sind.via which the heating gas can flow under the arched channel 22 of the channel battery 2. On the trigger channels 11, which are also supported on the silo structure, the guides 4 for the arch profile channel batteries 2, 3 are fastened at corresponding locations, and in the trigger channel wall there is an opening 10 in a corresponding manner in every second guide 4, but the openings 10 are offset from the injection duct openings 8.

Das Aufheizgas wird über das Rohr 14 in den Einblaskanal 7 geleitet, von wo es über die öffnungen 8 unter die Wölbprofilrinnen der Wölbprofilrinnen-Batterien 2 strömt. Wie aus Fig. 5 ersichtlich, bilden sich unter den Wölbprofilrinnen die Hohlräume 9, in denen das Aufheizmedium nahezu ungehindert über die gesamte Länge der Wölbprofilrinnen strömen und sich somit mit großer Stirnfläche auf die Zuschlagstoff-Schicht 5 verteilen und gleichfalls mit großer Stirnfläche diese durchströmen und zu den Wölbprofilrinnen-Batterien 3 gelangen und weiter über deren Hohlräume 9 durch die Öffnungen 1o in die Abzugskanäle 11 strömen kann.The heating gas is passed via the pipe 14 into the injection duct 7, from where it flows through the openings 8 under the arched channels of the curved batteries 2. As can be seen from FIG. 5, the cavities 9 are formed under the arched channels, in which the heating medium flows almost unhindered over the entire length of the curved channels and is thus distributed over the aggregate layer 5 with a large end face and likewise flows through it with a large end face and get to the Völbprofilrinnen batteries 3 and can continue to flow through the cavities 9 through the openings 10 in the discharge channels 11.

Die erfindungsgemäße Heizvorrichtung kann entweder als kontinuierliche oder als Chargenvorrichtung eingesetzt werden. Bei kontinuierlichem Betrieb wird die Heizvorrichtung im Siloinneren in der Nähe des Bodens angeordnet. In die Heizvorrichtung wird hierbei bei jeder Entnahme eine wärmemengenmäßig der zum Aufheizen der dem Silo postenweise zu entnehmenden Stoffmenge erforderliche Aufheizgasmenge eingeblasen. Bei Chargenbetrieb wiederum entspricht das Nettofassungsvermögen des Aufheizbehälters der maximalen Charge.The heating device according to the invention can be used either as a continuous or as a batch device. In continuous operation, the heater is placed inside the silo near the floor. With each removal, the amount of heating gas required to heat the amount of substance to be removed from the silo is blown into the heating device each time it is removed. With batch operation, on the other hand, the net capacity of the heating container corresponds to the maximum batch.

Beim Arbeiten mit kontinuierlicher Heizvorrichtung besteht der Nachteil, daß das aufzuheizende Gut in den zwischen den Wölbprofilrinnen-Batterien 2, 3 vorhandenen Zwischenräumen, d. h. in den Schichten 5 unter Umständen ungleichmäßig strömt, mit der Folge, daß an Stellen geringer Fließgeschwindigkeit eventuell eine Überhitzung des Guts eintritt, was wiederum bedeutet, daß die Austrittstemperatur des Aufheizgases steigt und der Wirkungsgrad des Heizens sinkt.When working with a continuous heating device, there is the disadvantage that the material to be heated flows in the gaps between the arch profile channel batteries 2, 3, that is to say unevenly in the layers 5, with the As a result, the material may overheat at points of low flow velocity, which in turn means that the outlet temperature of the heating gas rises and the efficiency of the heating decreases.

Ein solches ungleichmäßiges Fließen des Gutes läßt sich zum Beispiel dadurch verhindern, daß man auf den obersten Wölbprofilkassetten der randseitigen Wölbprofilrinnen-Batterien 3 verschleißfest verkapselte Motorvibratoren 19 anbringt, die den gleichmäßigen Fluß des aufzuheizenden Gutes fördern. Alternativ oder zusätzlich zur vorgenannten Maßnahme können auf in Fig. 9 gezeigte Weise auf den obersten Kassetten oder unterhalb der untersten Kassetten in den Bereichen des schnellsten Fließens Balken 17 angeordnet werden, die sich experimentell leicht an die richtige Stelle rücken lassen. Die Schienen 17 werden vorzugsweise frei an an den obersten Wölbprofilkassetten in relativ dichter Folge befindlichen Zapfen 18 angeordnet.Such an uneven flow of the material can be prevented, for example, by attaching motor-vibrators 19, which are wear-resistant and encapsulated, to the uppermost arch profile cassettes of the edge-side arch channel batteries, which promote the uniform flow of the material to be heated. As an alternative or in addition to the aforementioned measure, bars 17 can be arranged in the manner shown in FIG. 9 on the uppermost cassettes or below the lowermost cassettes in the areas of the fastest flow, which can be easily moved to the correct position experimentally. The rails 17 are preferably arranged freely on pins 18 located on the uppermost arch profile cassettes in relatively close succession.

Weiter kann der Aufheizgasstrom auf die in Fig. 8 und 9 gezeigte Weise durch Begrenzungsbleche 16 begrenzt werden, deren Aufgabe darin besteht, je nachdem, ob es sich bei der betreffenden Stelle um einen völlig an der Stelle verharrenden Passivvorrat des aufzuheizenden Guts oder nur um unterdurchschnittlich schwachen Materialfluß handelt, das Durchströmen von Aufheizgas durch die Schicht 5 entweder über die gesamte Länge, d. h. die gesamte Höhe der Wölbprofilrinnen-Batterien 2, 3, oder nur über einen Teil dieser Länge zu verhindern. In Fig. 1 bis 3 sowie 8 und 9 bezeichnet die Bezugszahl 2o den zwischen Silowand 1 und erfindungsgemäßer Heizvorrichtung verbleibenden, an der Stelle verharrenden Passivvorrat, der als Wärmedämmschicht zwischen Heizvorrichtung und Umgebung fungiert.Furthermore, the heating gas flow can be limited in the manner shown in FIGS. 8 and 9 by limiting plates 16, the function of which is, depending on whether the point in question is a passive supply of the material to be heated that remains completely in place or only below average weak material flow is the flow of heating gas through the layer 5 either over the entire length, ie the entire To prevent the height of the arch profile channel batteries 2, 3, or only over part of this length. 1 to 3 as well as 8 and 9, the reference numeral 20 denotes the passive supply remaining between the silo wall 1 and the heating device according to the invention, which remains at the point and which acts as a heat insulation layer between the heating device and the surroundings.

Im Hinblick auf die Intensität des Wärmeüberganges ist es von Vorteil, wenn die erfindungsgemäße Heizvorrichtung mit genügend heißem Aufheizgas betrieben wird. Zum Beispiel in der Betonstation eines Fertigteilwerkes kann beim Aufheizen kalter Betonzuschläge auf eine Temperatur von 7o bis 90°C das Aufheizgas eine Temperatur von 2oo bis 5oo°C haben, wobei dann die Aufheizzeit und damit auch die Anfahrzeit des kalten Heizungssystems nur einige Minuten beträgt.With regard to the intensity of the heat transfer, it is advantageous if the heating device according to the invention is operated with sufficiently hot heating gas. For example, in the concrete station of a precast plant, when heating up cold concrete aggregates to a temperature of 7o to 90 ° C, the heating gas can have a temperature of 2oo to 5oo ° C, whereby the heating up time and thus the start-up time of the cold heating system is only a few minutes.

Das Umwälzen des Aufheizgases in der erfindungsgemäßen Heizvorrichtung kann entweder in Form eines geschlossenen oder eines offenen Systems erfolgen. Beim geschlossenen System werden die Gase aus dem Abzugsschacht 12 erneut der Wärmequelle zugeführt und dann ins Rohr 14 gespeist. Werden die Rauchgase der Wärmequelle unter das Aufheizgas gemischt, so ist aus dem geschlossenen Kreislauf lediglich eine der Rauchgasmenge entsprechende Gasmenge abzuführen. Beim offenen System wiederum werden die Aufheizgase in ihrer Gesamtheit aus dem Abzugsschacht ins Freie geleitet.The heating gas can be circulated in the heating device according to the invention either in the form of a closed or an open system. In the closed system, the gases from the discharge shaft 12 are again fed to the heat source and then fed into the pipe 14. If the flue gases of the heat source are mixed with the heating gas, only a quantity of gas corresponding to the quantity of flue gas has to be removed from the closed circuit. In the case of the open system, the heating gases in their entirety are conducted out of the exhaust duct.

Claims (10)

1. Vorrichtung zum Anwärmen von Sand, Kies oder ähnlichem körnigem Gut, die in einem Behälter des anzuwärmenden Guts angeordnete Wölbprofilrinnen (2) zum Eintragen eines Aufheizgases in das Gut und Wölbprofilrinnen (3) zum Ableiten des Aufheizgases aus dem Gut umfaßt, dadurch gekennzeichnet, daß die zum Eintragen des Aufheizgases vorgesehenen Wölbprofilrinnen (2) zum einen und die zum Austragen des Aufheizgases vorgesehenen Wölbprofilrinnen (3) zum anderen zu abwechselnd nebeneinander anzuordnenden, mehrere übereinander befindliche Wölbprofilrinnen umfassenden, vertikale Trennwände bildenden Batterien zusammengefaßt sind, zwischen denen relativ dünne Schichten (5) des aufzuheizenden Guts liegen.1. A device for heating sand, gravel or similar granular material, which comprises vaulted profile channels (2) arranged in a container of the material to be heated for introducing a heating gas into the material and vaulted profile channels (3) for removing the heating gas from the material, characterized in that that the vault profile channels (2) provided for introducing the heating gas on the one hand and the vault profile channels (3) provided for discharging the heating gas on the other hand are combined to form batteries which form vertical partitions and which are arranged one above the other and which comprise a plurality of vault profile channels located one above the other, between which relatively thin layers ( 5) of the goods to be heated. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das eine Ende jeder der zum Eintragen von Aufheizgas dienenden Wölbprofilrinnen-Batterien (2) mit der Aufheizgas-Verteilerkammer (7) in Verbindung steht, welche wiederum an die Aufheizgas-Zuführungsleitung (14) angeschlossen ist.2. Apparatus according to claim 1, characterized in that the one end of each of the heating gas inlet vault profile channel batteries (2) with the heating gas distribution chamber (7) is connected, which in turn is connected to the heating gas supply line (14) is. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das eine Ende jeder der zum Austragen von Aufheizgas dienenden Wölbprofilrinnen-Batterien (3) mit einer Sammelkammer in Verbindung steht, die wiederum an den Abzugsschacht angeschlossen ist.3. Apparatus according to claim 1 or 2, characterized in that the one end of each of the serving for discharging heating gas arch profile channel batteries (3) is connected to a collecting chamber, which in turn is connected to the exhaust duct. 4. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das eine Ende jeder der zum Austragen von Aufheizgas dienenden Wölbprofilrinnen-Batterien (3) mit einem eigenen Abzugskanal (11) in Verbindung steht, der wiederum an einen eigenen Abzugsschacht (12) angeschlossen ist, welcher eine Drosselklappe (13) zur Regulierung der Aufheizgas-Strömung hat.4. Apparatus according to claim 1 or 2, characterized in that the one end of each of the serving for discharging heating gas arch profile channel batteries (3) is connected to its own discharge channel (11), which in turn is connected to its own discharge shaft (12) which has a throttle valve (13) for regulating the heating gas flow. 5. Vorrichtung nach irgendeinem der obigen Ansprüche, dadurch gekennzeichnet, daß die Wölbprofilrinnen-Batterien (2,3) lose an festen Führungspaaren (4) angeordnet sind, welche von der Verteilungskammer (7) zu den zum Eintragen von Aufheizgas dienenden Wölbprofilrinnen-Batterien (2) führende Öffnungen (8) und aus den zum Austragen von Aufheizgas dienenden Wölbprofilrinnen-Batterien (3) zur Sammelkammer oder zu den Abzugskanälen (11) führende öffnungen aufweisen.5. The device according to any one of the above claims, characterized in that the arch profile channel batteries (2, 3) are arranged loosely on fixed guide pairs (4), which extend from the distribution chamber (7) to the arch profile channel batteries used for introducing heating gas ( 2) have leading openings (8) and openings leading from the arch profile channel batteries (3) for discharging heating gas to the collecting chamber or to the discharge channels (11). 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß jede einzelne Wölbprofilrinnen-Batterie (2,3) von zwei oder mehr übereinander befindlichen Wölbprofilkassetten gebildet wird, wobei die einzelne Kassette wiederum von mehreren übereinander angeordneten Wölbprofilrinnen gebildet wird.6. The device according to claim 5, characterized in that each individual Völbprofilrinne battery (2,3) of two or more one above the other located arch profile cassettes is formed, the individual cassette in turn being formed by a plurality of arch profile channels arranged one above the other. 7. Vorrichtung nach irgendeinem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß jede der zum Eintragen von Aufheizgas dienenden Wölbprofilrinnen-Batterien (2) mit einer eigenen Drosselklappe zum Regulieren des Aufheizgas-Stromes versehen ist.7. The device according to any one of claims 2 to 6, characterized in that each of the serving for the introduction of heating gas arch profile channel batteries (2) is provided with its own throttle valve for regulating the heating gas flow. 8. Vorrichtung nach irgendeinem der obigen Ansprüche, gekennzeichnet durch zwischen den Wölbprofilrinnen-Batterien (2,3) angeordnete Aufheizgas-Begrenzungsbleche (16) zur Verringerung der Aufheizgas-Strömung in den Bereichen der Materialschichten (5), in denen nur beschränkter oder kein Materialfluß erfolgt.8. Device according to any one of the above claims, characterized by heating gas limiting plates (16) arranged between the arch profile channel batteries (2, 3) for reducing the heating gas flow in the regions of the material layers (5) in which only limited or no material flow he follows. 9. Vorrichtung nach irgendeinem der obigen Ansprüche, gekennzeichnet durch zwischen den Wölbprofilrinnen-Batterien (2,3) angeordnete, den Materialfluß bremsende Hindernisse (17), die dazu dienen, die Fließgeschwindigkeit des aufzuheizenden Guts in den einzelnen Schichten (5) auszugleichen.9. Device according to any one of the above claims, characterized by obstacles (17) arranged between the arch profile channel batteries (2, 3) and which serve to compensate for the flow rate of the material to be heated in the individual layers (5). 10. Vorrichtung nach irgendeinem der obigen Ansprüche, dadurch gekennzeichnet, daß sie mit Ausnahme des Aufheizgas-Zuführungsrohres (14) und des Aufheizgas-Abzugsschachtes bzw. der -Abzugsschächte (12) in ihrer Gesamtheit dergestalt im Behälter (1) des aufzuheizenden Guts angeordnet ist, daß zwischen der Umwand des Behälters (1) und der Heizvorrichtung eine an der Stelle verharrende, als Wärmedämmschicht fungierende Schicht des Guts verbleibt.1 0 . Device according to any one of the above claims, characterized in that, with the exception of the heating gas supply pipe (14) and the heating gas extraction shaft or the extraction shafts (12) in their entirety is arranged in the container (1) of the material to be heated in such a way that between the conversion of the container (1) and the heating device there remains a layer which acts as a thermal insulation layer of the estate remains.
EP80108049A 1979-12-28 1980-12-19 Apparatus for heating sand, gravel or similar granular materials Expired EP0031559B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80108049T ATE7671T1 (en) 1979-12-28 1980-12-19 DEVICE FOR HEATING SAND, GRAVEL OR SIMILAR GRANULAR GOODS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI794084 1979-12-28
FI794084A FI58758B (en) 1979-12-28 1979-12-28 ANORDINATION FOR UPDATING OF SUS GRUS ELLER LIKNANDE KORNFORMIGT MATERIAL

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EP0031559A2 true EP0031559A2 (en) 1981-07-08
EP0031559A3 EP0031559A3 (en) 1982-01-13
EP0031559B1 EP0031559B1 (en) 1984-05-30

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EP (1) EP0031559B1 (en)
AT (1) ATE7671T1 (en)
DE (1) DE3068080D1 (en)
DK (1) DK553480A (en)
FI (1) FI58758B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570639A1 (en) * 1984-09-24 1986-03-28 Tuyaux Bonna Methods and devices for accelerating the setting of concrete
US6424153B1 (en) * 1999-11-23 2002-07-23 Koninklijke Philips Electronics, N.V. On-the-fly removal of data inconsistency with k-space oversampling and demodulation in MRI acquisitions
WO2007128931A2 (en) * 2006-05-04 2007-11-15 Christian Naas Fluid floor screed preparation and mixing vehicle
CN116750359A (en) * 2023-08-21 2023-09-15 山东淼珠生物科技有限公司 Storage device for explosive bead production

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB202524A (en) * 1922-09-01 1923-08-23 Simon Ltd Henry Improvements in drying and conditioning machines for cereals
DE1032698B (en) * 1953-06-30 1958-06-19 Svenska Flaektfabriken Ab Chute dryer for pourable goods
DE1948099A1 (en) * 1968-09-24 1970-04-09 Svenska Flaektfabriken Ab Drying shaft for grain and similar grainy material
DE2009098A1 (en) * 1969-02-26 1970-09-24 Väänänen, Olavi, Helsinki Silo for heating concrete mineral
DE2355253A1 (en) * 1973-03-20 1974-10-03 Olavi Vaeaenaenen APPARATUS FOR TAPPING AND HEATING STONE MATERIAL FOR CONCRETE PRODUCTION
FR2346964A1 (en) * 1976-04-05 1977-11-04 Baudot Hubert Gravity fed dry air grain dryer - has central drying chamber contg. alternate pairs of horizontal rows of air admission members and air extraction members

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB202524A (en) * 1922-09-01 1923-08-23 Simon Ltd Henry Improvements in drying and conditioning machines for cereals
DE1032698B (en) * 1953-06-30 1958-06-19 Svenska Flaektfabriken Ab Chute dryer for pourable goods
DE1948099A1 (en) * 1968-09-24 1970-04-09 Svenska Flaektfabriken Ab Drying shaft for grain and similar grainy material
DE2009098A1 (en) * 1969-02-26 1970-09-24 Väänänen, Olavi, Helsinki Silo for heating concrete mineral
DE2355253A1 (en) * 1973-03-20 1974-10-03 Olavi Vaeaenaenen APPARATUS FOR TAPPING AND HEATING STONE MATERIAL FOR CONCRETE PRODUCTION
FR2346964A1 (en) * 1976-04-05 1977-11-04 Baudot Hubert Gravity fed dry air grain dryer - has central drying chamber contg. alternate pairs of horizontal rows of air admission members and air extraction members

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570639A1 (en) * 1984-09-24 1986-03-28 Tuyaux Bonna Methods and devices for accelerating the setting of concrete
US6424153B1 (en) * 1999-11-23 2002-07-23 Koninklijke Philips Electronics, N.V. On-the-fly removal of data inconsistency with k-space oversampling and demodulation in MRI acquisitions
WO2007128931A2 (en) * 2006-05-04 2007-11-15 Christian Naas Fluid floor screed preparation and mixing vehicle
WO2007128931A3 (en) * 2006-05-04 2007-12-27 Christian Naas Fluid floor screed preparation and mixing vehicle
CN116750359A (en) * 2023-08-21 2023-09-15 山东淼珠生物科技有限公司 Storage device for explosive bead production
CN116750359B (en) * 2023-08-21 2023-11-10 山东淼珠生物科技有限公司 Storage device for explosive bead production

Also Published As

Publication number Publication date
DE3068080D1 (en) 1984-07-05
EP0031559A3 (en) 1982-01-13
DK553480A (en) 1981-06-29
ATE7671T1 (en) 1984-06-15
FI58758B (en) 1980-12-31
EP0031559B1 (en) 1984-05-30

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