EP0391768B1 - Trommeltrockner und -mischer mit Brenner für die Aufbereitung von bitumenumhüllten Stoffen - Google Patents

Trommeltrockner und -mischer mit Brenner für die Aufbereitung von bitumenumhüllten Stoffen Download PDF

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Publication number
EP0391768B1
EP0391768B1 EP90400821A EP90400821A EP0391768B1 EP 0391768 B1 EP0391768 B1 EP 0391768B1 EP 90400821 A EP90400821 A EP 90400821A EP 90400821 A EP90400821 A EP 90400821A EP 0391768 B1 EP0391768 B1 EP 0391768B1
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EP
European Patent Office
Prior art keywords
drum
burner
flame
blades
casing
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 - Lifetime
Application number
EP90400821A
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English (en)
French (fr)
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EP0391768A1 (de
Inventor
Guy Marconnet
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Ermont CM
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Ermont CM
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Filing date
Publication date
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Priority to AT90400821T priority Critical patent/ATE79141T1/de
Publication of EP0391768A1 publication Critical patent/EP0391768A1/de
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Publication of EP0391768B1 publication Critical patent/EP0391768B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
    • E01C19/1027—Mixing in a rotary receptacle
    • E01C19/1031—Mixing in a rotary receptacle the mixture being discharged continuously
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
    • E01C19/1027—Mixing in a rotary receptacle
    • E01C19/1036—Mixing in a rotary receptacle for in-plant recycling or for reprocessing, e.g. adapted to receive and reprocess an addition of salvaged material, adapted to reheat and remix cooled-down batches
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C2019/1081—Details not otherwise provided for
    • E01C2019/1086—Mixing containers having concentric drums
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C2019/1081—Details not otherwise provided for
    • E01C2019/109—Mixing containers having a counter flow drum, i.e. the flow of material is opposite to the gas flow

Definitions

  • the invention relates to a drying and coating drum for the preparation of bituminous coated products comprising an improved burner.
  • Devices for the preparation of bituminous coated products from aggregates and bitumen which are constituted by a drum comprising a cylindrical envelope in which the drying and heating of the aggregates introduced by one end of the drum and the coating are carried out. aggregates dried and heated with bitumen generally introduced in liquid form.
  • drum-dryers-wrappers are internally lined with lifting or agitating fins for the materials and the drum whose axis is slightly inclined in the direction going from its inlet end to its outlet end ensures the transport of solid materials, when it is rotated about its longitudinal axis.
  • the solid materials mainly constituted by the aggregates are therefore circulated in the longitudinal direction of the drum and are successively dried and heated then coated with bitumen.
  • the heat necessary to carry out the drying and heating of the aggregates and / or the reflow of the recycled coated materials is supplied to the drum by a burner penetrating axially through one of the ends of the envelope.
  • the burner can be introduced into the casing by its end receiving the virgin aggregates, generally designated as the inlet end.
  • the hot gases from the burner and the aggregates circulate in the same direction inside the drum.
  • the drum is thus generally separated into two zones, namely a first zone located between the inlet end of the drum and the end of the burner, in which the burner flame develops and in which the hot gases circulate and a second area around the burner body between the end of the burner and the outlet end of the drum, this second area not being subject to the circulation of hot gases from the burner.
  • This arrangement makes it possible to carry out the drying and heating of the aggregates in the first zone and the coating of the dried and heated aggregates in the second zone, by reducing the risks of degradation and ignition of the bitumen.
  • bitumen vapor and pellets constituted by a mixture of pulverulent and bitumen are thus favored, which is very harmful for the quality of the mixes produced.
  • the mixing is carried out in contact with the bottom of the drum, which affects the quality of the coated product.
  • the extraction fan ensures the transport of all the water vapor contained in the recycled material and passes it over the new bitumen, which promotes the distillation and vaporization of the bitumen by the "steam cracking" phenomenon. .
  • the object of the invention is therefore to propose a drying and coating drum for the preparation of bituminous coated products, from aggregates and bitumen, the drum having a cylindrical casing having a first end, or inlet end. by which at least part of the aggregates are introduced and a second end, or outlet end, through which the body of a burner enters the drum in its axial direction to an area remote from the outlet end, so as to develop a flame and ensure the circulation of hot gases along the length of the drum, in the direction opposite to the direction of circulation of the aggregates, from the end of the body of the burner, a means for injecting bitumen disposed in a drum coating zone situated around the body of the burner and means for rotating the drum around its axis, this drying and coating drum eur having a mixing zone around the burner body perfectly isolated from the flame zone when the drum is in service and ensuring the elimination of volatile products released by the bitumen in the mixing zone.
  • the part of the burner body located inside the drum is arranged coaxially inside a peripheral external sheath, free to rotate around the burner body and connected to the casing of the drum, one end corresponding to the end of the burner from which the flame develops carries a plurality of blades of radial direction with respect to the casing of the drum having faces inclined with respect to the longitudinal direction of the drum and constituting a gas suction turbine in the direction going from the second to the first end, during the rotation of the drum , and a screen against the radiation from the burner flame.
  • Figure 1 is an axial sectional view of the entire coating dryer drum.
  • FIG. 2 is a partial cross-sectional view along 2-2 of FIG. 1.
  • Figure 3 is a partial cross-sectional view along 3-3 of Figure 1.
  • FIG. 4 is a partial cross-sectional view along 4-4 of FIG. 1.
  • FIG. 5 is a partial cross-sectional view along 5-5 of FIG. 1.
  • Figure 6 is a cross-sectional view along 6-6 of Figure 1.
  • Figure 7 is a cross-sectional view along 7-7 of Figure 1.
  • Figure 8 is a cross-sectional view along 8-8 of Figure 1.
  • the coating dryer drum shown in FIG. 1 comprises a casing 1 of generally cylindrical shape comprising a first end 2 constituting its inlet end and a second end 3 constituting its outlet end.
  • the casing 1, in the operating position of the drum, is mounted on a platform so that its longitudinal axis 5 is inclined relative to the horizontal, the inlet end 2 being at a level higher than the level of the outlet end 3.
  • the casing 1 is also rotatably mounted on the platform, around its longitudinal axis 5.
  • vanes 7 ′ arranged along helices make it possible to very quickly introduce the aggregates into the second zone 8 of the drum.
  • the envelope 1 carries on its internal surface flat vanes 10 making it possible to ensure a certain agitation of the aggregates, without lifting these aggregates inside the drum.
  • the drum-dryer-coater comprises a zone 9 in which the internal surface of the casing 1 is filled with vanes 11 in shape of hooks to ensure a certain lifting of the aggregates inside the drum during its rotation.
  • This zone 9 constitutes a drying and heating zone, the aggregates being exposed to radiation of the flame and brought into contact with the hot gases circulating in the drum.
  • the drying and heating zone 9 occupies a substantial length of the drum and ends at an annular diaphragm 17 delimiting the zone in which the flame 14 of the burner develops. Downstream of the diaphragm 17, in the first part of the flame zone, a recycling ring 12 is arranged around the drum so as to allow the introduction of recycled materials into the drum.
  • the internal surface of the casing 1 of the drum comprises, in the zone situated between the diaphragm 17 and the recycling ring 12, anti-radiation vanes 13 whose shape makes it possible to protect the materials introduced into the drum against the radiation of the flame.
  • the blades 13 delimit, with the inner surface of the casing 1, successive pockets, the wall of which faces towards the interior of the drum, that is to say towards the flame 14 of the burner, avoids direct exposure of the materials.
  • Part 1a of the envelope 1 disposed in the vicinity of the outlet end 3 has a diameter greater than the diameter of the other parts of the envelope.
  • This part 1a is engaged by its end close to the outlet section 3 in a facade element 15 comprising an outlet opening 16 of the mixes produced in the drum.
  • the body 19 of the burner 20 which is fixed in rotation relative to the casing 1 of the drum penetrates inside the casing 1 in its axial direction.
  • the part of the body 19 located inside the drum is disposed axially inside a peripheral external sheath 22, free to rotate around the body 19.
  • the sheath 22 is rotatably mounted inside the support 18 by means of rollers 23 and around the body 19 of the burner, by means of rollers 24.
  • the fuel and the combustion air are supplied to the burner through the interior of the body 19 which has an outlet end 19a from which the flame 14 develops.
  • blades such as the blades 25 and 26 are fixed, in positions close to the end of the sleeve 22 corresponding to the end 19a of the body of the burner.
  • the sheath 22 is on the other hand fixed on the casing 1 of the drum-dryer-coater, by means of lugs 27 welded to the end of the blades such as 25 and to the interior surface of the casing 1.
  • the blades 25 and 26 are inclined with respect to the longitudinal axis 5 of the drum, at an angle other than 90 °, so that these blades, during the rotation of the drum, constitute a turbine allowing the gases to be sucked out. located in the part of the drum situated between the outlet end 3 of this drum and the end of the burner around which the blades 25, 26 are fixed.
  • the projected surfaces of the blades 25, 26 cover the whole of the straight section of the drum in its central zone corresponding to the flame development zone.
  • the blades 25, 26 thus constitute an anti-radiation screen separating the flame zone from the zone located downstream, around the advanced body 19 of the burner 20.
  • Propeller-shaped vanes 28 are fixed on the internal surface of the casing 1 of the drum, immediately upstream of the blades 25, 26 secured to the sheath 22. These helical vanes 28 ensure the passage of materials from upstream to the downstream side of the turbine constituted by the blades 25, 26.
  • the body 21 of the burner 20 has a relatively large length, so that the end of the burner from which the flame 14 develops is in a position remote from the outlet end 3 of the drum.
  • the zone of the drum into which the burner body penetrates constitutes, in its peripheral part, that is to say between the external sheath 22 and the casing 1, 1a of the drum, the coating zone 30 of the drum in which opens the head 31 of the bitumen injection device.
  • This injection head 31 is located downstream of the end part 19a of the body of the burner 19, that is to say downstream of the blades 25 and 26.
  • the internal surface of the casing 1 of the drum-dryer-coater carries hook blades 32 ensuring a lifting of the materials throughout the section of the drum to produce a efficient mixing of aggregates and bitumen and the production of homogeneous and malleable mixes.
  • a curtain of materials falling over the entire section of the drum is formed immediately downstream of the blades 25, 26 and upstream of the nozzle 31.
  • a nozzle 33 for injecting pulverulent material constituted by an endless screw is also disposed inside the zone 30 and opens into this zone, downstream of the nozzle 31 for injecting bitumen.
  • the pulverulent materials thus come into contact with solid materials covered with bitumen.
  • the pulverulent materials are thus retained by bonding on the aggregates and cannot fly inside the drum. There is therefore a double coating; firstly, the aggregates with a large particle size are coated with bitumen by the nozzle 31. These aggregates contain very few fines since these have been separated and entrained by the gases circulating in the drum, in the drying zone ( 8, 9).
  • the aggregates with a large particle size are coated effectively and the addition of bitumen is carried out in an area which is perfectly isolated from the flame area and in which neither air stream nor water value stream circulates. This prevents oxidation and "steam-cracking" of the bitumen.
  • the fine-grained elements are introduced by the nozzle 33 constituted by an endless screw. These fine elements are poured onto the elements with a large particle size which have been coated in the first part of the zone 30. This prevents any formation of pellets formed by fine elements and bitumen. In addition, the aggregates with large particle sizes coated with bitumen which rain in the first part of the zone 30 make it possible to retain by bonding the fines which would tend to propagate upstream in the drum.
  • an atomizer 35 performing a fractionation of the fuel introduced into the central part of the burner body and an intimate mixture with the combustion air.
  • the casing 1 When the drum-dryer-coater is in service, the casing 1 is rotated about its longitudinal axis 5, which also causes the outer sheath 22 to rotate around the burner 20 and the blades 25 and 26 fixed to the sheath external.
  • These blades constitute blades of a turbine ensuring a certain suction of the gases located in the zone 30 in the direction of the flame zone (arrow 37).
  • the hot gases passing through the drum exit through the inlet end 2 of the casing 1 of the drum and are evacuated by a recovery device 38.
  • the aggregates are raised inside the drum and fall in rain over a large part of the internal cross section of the envelope 1.
  • the cold and wet aggregates are thus exposed to hot gases circulating in the drum, in the extension of the flame 14. This produces an intense drying and heating of the aggregates which is further increased, when the aggregates reach the flame zone 14.
  • the aggregates are taken care of, in this zone , by the anti-radiation vanes 13. (see figure 4).
  • the recycling ring 12 is placed around the casing 1 of the drum which includes chutes 41 for introducing the recycled materials poured into the hopper 42 of the recycling ring 12, in openings passing through the casing 1 of the drum.
  • a second smaller diameter drum 40 is disposed inside the casing 1 of the drum, in the recycling zone.
  • Helical blades 43 are fixed on the second drum 40 for the introduction of recycled materials downstream of the recycling ring behind the anti-radiation vanes 13.
  • the virgin aggregates are also transported downstream of the recycling ring and mixed with recycled asphalt.
  • the flame 14 of the burner is pear-shaped, its diameter gradually increasing from the atomizer 35 to the vicinity of its terminal part. At the recycling ring, the flame therefore occupies only a central part of the drum section. Recycled materials are therefore not exposed directly to the flame when they enter the drum.
  • the coated materials recycled at the recycling ring 12 are incorporated into virgin aggregates which are perfectly dry and brought to a high temperature. A rapid reflow of the bitumen of the recycled materials is thus obtained in the last part of the flame zone 14.
  • the vapors released possibly by the recycled materials are incinerated by means of the annular diaphragm 17 which concentrates the hot gases at the outlet of the combustion zone.
  • the heating of the aggregates is accompanied by intensive drying and the water vapor formed escapes through the openings of the anti-radiation vanes 13. This water vapor is evacuated by the gas stream without coming into contact with the bitumen. new. The mixture is therefore practically dry when it enters zone 30.
  • the virgin aggregates mixed with the reclaimed recycled asphalt are introduced into the zone 30 where liquid bitumen is incorporated into them by the injection nozzle 31.
  • the fins 32 lining the casing of the drum in the zone 30 make it possible to lift the aggregates throughout the section of the drum and to carry out effective kneading and coating of the aggregates brought into contact with the bitumen.
  • the blades 25 and 26 secured to the outer casing movable in rotation around the burner provide effective protection of the materials containing bitumen.
  • the screen effect of the blades 25 and 26 of the burner is increased by the presence of a curtain of materials falling throughout the section of the drum, inside the zone 30.
  • Pulverulent material is incorporated by the nozzle 33 into the aggregates covered with bitumen. This pulverulent material is thus retained by the aggregates thanks to the adhesive power of the bitumen.
  • the coated materials are recovered at the outlet of the drum, at the opening 16.
  • the drying and coating drum according to the invention therefore makes it possible to ensure a good quality coating in a zone perfectly separated from the flame zone of the drum, thanks to a burner of improved design.
  • blades having a shape other than the blades 25, 26 which have been described and that these blades can be arranged in any number around the external sleeve surrounding the burner 20.
  • the blades fixed on the internal surface of the drum may have a shape different from that which has been described and shown.
  • the device according to the invention can be used both for the preparation of bituminous mixes from virgin materials and recycled materials as for the preparation of mixes from virgin materials only.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Road Paving Machines (AREA)
  • Processing Of Solid Wastes (AREA)

Claims (9)

1. Trommeltrockner und -mischer für die Herstellung von bitumenumhüllten Stoffen aus Zuschlagstoffen und Bitumen, bei dem die Trommel versehen ist mit einem zylindrischen Mantel (1), der ein erstes oder Eingangs-Ende (2), durch das wenigstens ein Teil der Zuschlagstoffe eingeführt wird, und ein zweites oder Ausgangs-Ende (3) aufweist, durch das das Gehäuse (19) eines Brenners (20) bis zu einer von dem Ausgangs-Ende (3) entfernten Zone axial in die Trommel hineinragt, so daß eine Flamme (14) gebildet und die Umwälzung von heißem Gas von dem Ende (19a) des Brennergehäuses (19) aus längs der Trommel, gegensinnig zum Umlauf der Zuschlagstoffe, sichergestellt wird, mit einem Mittel (31) zur Injektion von Bitumen, das so angeordnet ist, daß es in eine das Gehäuse (19) des Brenners (20) umgebende Mischzone (30) der Trommel mündet, und mit Mitteln zum Drehen der Trommel um ihre Achse (5), dadurch gekennzeichnet, daß der Teil des Gehäuses (19) des Brenners (20), der sich im Inneren der Trommel befindet, koaxial in einer umgebenden äußeren Hülse (22) angeordnet ist, die frei um das Gehäuse (19) des Brenners drehbar und mit dem Mantel (1) der Trommel verbunden ist und deren dem Ende (19a) des Brenners (20) entsprechendes Ende, von dem aus sich die Flamme ( 14) ausbreitet, mehrere radial in bezug auf den Mantel (1) der Trommel angeordnete Flügel (25,26) mit in bezug auf die Längsnchtung (5) der Trommel geneigten Flächen trägt, die eine Turbine zum Ansaugen von Gas in der Richtung vom zweiten Ende zum ersten Ende der Trommel während der Drehung der Trommel sowie eine Abschirmung gegen die Strahlung der Flamme (14) des Brenners (20) bilden
2. Trommeltrockner und -mischer nach Anspruch 1, dadurch gekennzeichnet, daß die auf eine senkrechte Schnittebene der Trommel projizierte Oberfläche der Flügel (25,26) im wesentlichen mit dem senkrechten Schnitt der Flamme (14) des Brenners in ihrer Zone größten Querschnitts übereinstimmt.
3. Trommeltrockner und -mischer nach Anspruch 1, dadurch gekennzeichnet, daß die den Brenner (20) umgebende äußere Hülle (22) durch wenigstens einen Flügel (25) an dem Mantel (1) der Trommel befestigt ist.
4. Trommeltrockner und -mischer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der äußere Mantel (22) des Brenners (20) im Inneren eines festen Elements (15) unter Zwischenfügung von Rollen (23) und auf dem Umfang des Brennergehäuses (19) unter Zwischenfügung von Rollen (24) drehbar montiert ist.
5. Trommeltrockner und -mischer nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß er in der den Brenner umgebenden Mischzone (30) mit an der Innenfläche (1a) des Trommelmantels befestigten Schaufeln (32) versehen ist, die das Anheben der umgewälzten Feststoffe im gesamten Querschnitt der Trommel gewährleisten.
6. Trommeltrockner und -mischer nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß er zwischen seinem Eingangs-Ende (2) und der Zone, in der sich die Flamme (14) ausbreitet, eine Trocknungszone (8,9) aufweist, die von der Flammzone durch eine ringförmige Membran (17) getrennt ist.
7. Trommeltrockner und -mischer nach Anspruch 6, dadurch gekennzeichnet, daß er zwischen der Trocknungszone (8,9) und dem Ende (19a) des Brenners (20), von dem aus sich die Flamme ( 14) bildet, einen Ring (12) zum Eingeben von rezirkulierten Materialien aufweist.
8. Trommeltrockner und -mischer nach Anspruch 7, dadurch gekennzeichnet, daß er in der Flammzone zwischen der Membran (17) und dem Ende des Brenners (20), um das herum die Flügel (25,26) der Turbine angeordnet sind, mit an der Innenfläche des Mantels (1) befestigten strahlungshemmenden Schaufeln versehen ist, die den Transport der umgewälzten Feststoffe in der Trommel und den Schutz dieser Feststoffe gegen die Strahlung der Flamme gewährleisten.
9. Trommeltrockner und -mischer nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß er eine Einrichtung (33) zum Einführen von pulverförmigen Materialien aufweist, die stromabwärts der Einrichtung (31) zur Injektion von Bitumen in das Innere der das Gehäuse (19) des Brenners (20) umgebenden Zone mündet.
EP90400821A 1989-04-05 1990-03-26 Trommeltrockner und -mischer mit Brenner für die Aufbereitung von bitumenumhüllten Stoffen Expired - Lifetime EP0391768B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90400821T ATE79141T1 (de) 1989-04-05 1990-03-26 Trommeltrockner und -mischer mit brenner fuer die aufbereitung von bitumenumhuellten stoffen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8904475 1989-04-05
FR8904475A FR2645556B1 (fr) 1989-04-05 1989-04-05 Tambour secheur et enrobeur pour la preparation de produits enrobes bitumineux comportant un bruleur perfectionne

Publications (2)

Publication Number Publication Date
EP0391768A1 EP0391768A1 (de) 1990-10-10
EP0391768B1 true EP0391768B1 (de) 1992-08-05

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EP90400821A Expired - Lifetime EP0391768B1 (de) 1989-04-05 1990-03-26 Trommeltrockner und -mischer mit Brenner für die Aufbereitung von bitumenumhüllten Stoffen

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US (1) US4988207A (de)
EP (1) EP0391768B1 (de)
JP (1) JPH0363302A (de)
AT (1) ATE79141T1 (de)
CA (1) CA2013267A1 (de)
DE (1) DE69000242T2 (de)
ES (1) ES2034827T3 (de)
FR (1) FR2645556B1 (de)

Cited By (1)

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US5538340A (en) 1993-12-14 1996-07-23 Gencor Industries, Inc. Counterflow drum mixer for making asphaltic concrete and methods of operation

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US5203693A (en) * 1991-10-01 1993-04-20 Astec Industries, Inc. Rotary drum dryer having internal flights
US5364182A (en) * 1993-11-16 1994-11-15 Michael Hawkins Counter-flow asphalt plant with multi-stage combustion zone overlapping the mixing zone
US5664881A (en) * 1993-11-16 1997-09-09 Maxam Equipment, Inc. Counter-flow asphalt plant with multi-stage combustion zone overlapping the mixing zone
ATE159308T1 (de) * 1993-11-17 1997-11-15 Giorgio Ghirardelli Anlage zur bereitung eines bitumenkonglomerats im kontinuverfahren
US5772317A (en) * 1996-08-27 1998-06-30 Gencor Industries, Inc. Counterflow drum mixer for making asphaltic concrete and methods of operation
US6267493B1 (en) 1999-06-02 2001-07-31 Cmi Corporation Drum mixer having a plurality of isolated aggregate transport channels
US6672751B2 (en) 2001-01-18 2004-01-06 Michael R. Hawkins Counter-flow asphalt plant with combustion zone feed and exhaust gas heater
US7357562B2 (en) * 2003-03-11 2008-04-15 Hawkins Michael R Counter-flow drum mixer asphalt plant with two stage mixing zone
KR100624345B1 (ko) * 2004-07-20 2006-09-19 태성개발(주) 폐 아스팔트 콘크리트 재생방법과 그 장치
JP4859475B2 (ja) * 2006-02-15 2012-01-25 株式会社安田製作所 アスファルト廃材再生装置
FR2956125B1 (fr) * 2010-02-11 2012-03-16 Famaro Installation de production de produits enrobes bitumineux.
IT1399864B1 (it) * 2010-05-07 2013-05-09 Visani Cilindro essiccatore per abbattimento fumi incombusti
WO2013064851A1 (en) * 2011-11-03 2013-05-10 Visani Roberto Drying cylinder for blasting of the unburnt smokes

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US3329131A (en) * 1964-12-14 1967-07-04 Space Conditioning Inc Fuel burner and combination thereof with a fire tube boiler
FR2327048A1 (fr) * 1975-10-08 1977-05-06 Creusot Loire Dispositif pour la preparation de produits principalement utilises pour la construction et l'entretien des routes
US4787938B3 (en) * 1986-06-30 1999-11-30 Standard Havens Countercurrent drum mixer asphalt plant
EP0362199B2 (de) * 1987-04-16 1995-03-08 Marini S.P.A. Herstellungsvorrichtung für asphaltbeton

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Also Published As

Publication number Publication date
DE69000242D1 (de) 1992-09-10
EP0391768A1 (de) 1990-10-10
FR2645556A1 (fr) 1990-10-12
FR2645556B1 (fr) 1991-07-19
CA2013267A1 (fr) 1990-10-05
JPH0363302A (ja) 1991-03-19
ES2034827T3 (es) 1993-04-01
DE69000242T2 (de) 1993-04-01
ATE79141T1 (de) 1992-08-15
US4988207A (en) 1991-01-29

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