EP0347281A1 - Vorrichtung zur Aufbereitung von bituminösem Mischgut in einem unbeweglichen Mixer - Google Patents

Vorrichtung zur Aufbereitung von bituminösem Mischgut in einem unbeweglichen Mixer Download PDF

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Publication number
EP0347281A1
EP0347281A1 EP89401546A EP89401546A EP0347281A1 EP 0347281 A1 EP0347281 A1 EP 0347281A1 EP 89401546 A EP89401546 A EP 89401546A EP 89401546 A EP89401546 A EP 89401546A EP 0347281 A1 EP0347281 A1 EP 0347281A1
Authority
EP
European Patent Office
Prior art keywords
drum
zone
mixer
casing
aggregates
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.)
Withdrawn
Application number
EP89401546A
Other languages
English (en)
French (fr)
Inventor
Guy Marconnet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ermont CM
Original Assignee
Ermont CM
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ermont CM filed Critical Ermont CM
Publication of EP0347281A1 publication Critical patent/EP0347281A1/de
Withdrawn legal-status Critical Current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
    • E01C19/104—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers
    • E01C19/1045—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers 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
    • E01C19/1004—Reconditioning or reprocessing bituminous mixtures, e.g. salvaged paving, fresh patching mixtures grown unserviceable; Recycling salvaged bituminous mixtures; Apparatus for the in-plant recycling thereof
    • 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
    • E01C2019/109—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 device for preparing bituminous coated products, from new aggregates, liquid bitumen and recycled bituminous mixes.
  • a burner penetrates into the drum at one of its ends and allows hot gases to circulate which ensure the drying and heating of the materials circulating in the drum.
  • Such a drum performs both the drying and heating of the cold and wet aggregates entering the drum, the reheating of recycled asphalt and the mixing of new aggregates and recycled asphalt, in contact with liquid bitumen brought into the drum by a injection rod.
  • the internal wall of the drum is lined with blades of different shapes depending on the zones of the drum to ensure, thanks to the rotation of the drum, transport, mixing and / or revelation of the materials circulating in the drum.
  • drum-dryers-mixers have the disadvantage of bringing together in a single enclosure, a flame, very hot gases and liquid bitumen. This results in entrainment of bitumen vapor by the hot gases circulating in the drum, which results in a rapid clogging of the bag filters used for the dedusting of the gases leaving the drum and by a rejection of harmful vapors to the atmosphere.
  • These drawbacks are particularly marked in the case of drum-dryer-mixers with parallel currents, that is to say drum-dryer-mixers where the hot gases circulate inside the drum in the same direction as the solid materials. .
  • the recycling ring used for the introduction of used asphalt in granular form into the drum does not constitute an adequate means for introducing pulverulent or fibers at the entrance to the mixing zone.
  • Installations using a dryer and a separate fixed jacket mixer therefore have the advantage of reducing the formation and release of bitumen vapor and of facilitating the incorporation of additives into the coated products, during their mixing.
  • the total motive power required for the dryer and the mixer of an installation according to the old design is significantly higher than the motive power required for a drum-dryer-mixer of the same capacity.
  • US-A-2,421,345 discloses a drying drum in which the hot gases from the burner and the aggregates circulate in opposite directions; in addition, the end of the drum opposite to the inlet end of the aggregates communicates with a mixer having a fixed casing into which the aggregates are poured out of the drum.
  • the drum is extended by supports of longitudinal direction carrying stirring blades which move inside the mixer with a fixed casing during the rotation of the drum.
  • Liquid bitumen is incorporated into the aggregates in the mixer.
  • the burner flame develops in the mixing zone, which leads to the formation of bitumen vapors, even if a cylindrical chamber is provided in the center of the mixer casing to prevent direct contact between the bitumen and the flame.
  • the device according to US-A-2,421,345 does not allow used asphalt to be incorporated into the materials circulating in the drum.
  • the object of the invention is therefore to propose a device for preparing bituminous coated products from new aggregates, liquid bitumen and recycled bituminous mixes
  • a cylindrical drum mounted to rotate around its axis and slightly inclined relative to the horizontal plane
  • a mixer constituted by an enve fixed loppe into which opens the outlet end of the drum, provided with a means for injecting liquid bitumen and a device for removing mixes and mixing means fixed on the drum and extending the drum in its axial direction on the side of its outlet, so as to penetrate into the casing of the kneader, kneading being ensured by the rotation of the kneading means, during the rotation of the drum, this device, of simple shape and relatively compact , allowing the development of coated products containing any
  • the burner has an elongated body opening into a flame zone distant from the ends of the drum
  • the drum also comprises, in a region remote from its ends and located in the vicinity of the end of the burner body from which develops the flame, a recycling ring surrounding the casing of the drum and allowing the introduction of recycled mixes inside the drum and the casing of the mixer delimits, around the body of the burner, a separate mixing zone from the flame zone through the zone for introducing recycled materials.
  • FIG 1 we see the installation which includes a platform 1 for supporting the cylindrical drum 2 which is rotatably mounted on the platform about its axis XX ′.
  • the platform 1 comprises support devices on the ground of the site not shown and means for adjusting its inclination relative to the horizontal plane making it possible to adjust the inclination of the axis XX ′ of the drum 2.
  • the platform 1 can be constituted by the platform of a road trailer comprising extensible and retractable support crutches for the installation of the device on the site.
  • the cylindrical envelope of the drum 2 is rotatably mounted on the platform 1 around its axis XX ′, by means of four rolling rollers 4 and two rolling rings 5.
  • the drum 2 has a first end 2a or inlet end through which the outlet end of a belt conveyor 6 penetrates, enabling cold and wet aggregates 7 to be supplied to the drum.
  • the inlet end 2a of the drum is engaged inside a suction box 8 for the gases circulating in the drum.
  • the casing 9 is fixed to the platform 1 and comprises a chute 11 for output of the coated bituminous materials produced by the installation.
  • the fixed casing 9 of cylindrical shape is fixed on the platform 1, in the axial extension of the drum 2.
  • This casing 9 comprises a rear closing plate 9a which is crossed by the elongated cylindrical body 12 of a burner 13 comprising a fan 14 carried by platform 1.
  • the body of the burner 12 disposed along the axis XX ′ common to the drum 2 and to the fixed casing 9 of the mixer passes through the whole of the mixer in its central part and opens at its end 12a, inside the drum 2, at a certain distance from its outlet end 2b engaged in the casing 9 of the mixer.
  • the flame 16 of the burner develops inside the drum, from the end 12a of the body 12 of the burner, in a zone remote from both the inlet end 2a and the outlet end 2b of the drum.
  • the drum 2 comprises, along its length, several successive zones which are differentiated by the shape of the elements lining the inner surface of the drum in the zone considered and by the function provided by this zone, when the device is in service.
  • the latter From the inlet end 2a of the drum to the outlet end, the latter comprises an introduction zone 20, a drying zone 21, a flame zone 22, an asphalt introduction zone recycled 23 and a reheating and mixing zone 24.
  • the zone for introducing recycled asphalt 23 separates and insulates the reheating and mixing zone 24 and the kneading zone 36 located at the inside the envelope 9, with respect to the flame zone 22.
  • Zone 20 ensures rapid introduction of the aggregates 7 brought to the drum by the conveyor 6 into the drying zone 21.
  • the internal wall of the drum 2 is lined with fins 19 projecting radially from the internal surface of the drum and arranged along helices having as axis the axis XX ′ of the drum.
  • the interior surface of the drum is provided with lifting vanes 25, the cross section of which can be, for example, in the form of a hook, makes it possible to raise the aggregates 7 up to the upper part of the drum and constitute a continuous curtain of aggregates falling in cascade in the section of the drum during its rotation.
  • the continuous curtain of aggregates is crossed by the hot gases coming from the flame 16 of the burner located in the zone 22 and circulating in the axial direction of the drum (arrow 30).
  • the drum is inclined so that its inlet end 2a is at a level higher than its outlet end 2b.
  • the solid materials and in particular the aggregates 7 therefore circulate in the drum in the opposite direction to the direction of circulation of the hot gases.
  • the cold and wet aggregates 7, on entering the drum are dried and heated by a circulation of hot gases against the current. When they exit through the suction box 8 (arrows 31), the gases are loaded with dust released by the aggregates 7 during their drying.
  • the internal wall of the drum 2 is furnished with blades 26 making it possible to retain the aggregates 7 dried and heated in the zone 21 against the internal wall of the drum 2.
  • the blades 26 formed by folded sheet metal strips have a concave section directed towards the wall of the drum and a substantially planar external surface directed towards the flame 16.
  • vanes 26, of a form known in the art of drying drums and wrappers, make it possible to provide a free zone at the central part of the drum in which the flame 16 can develop.
  • the drum 2 is surrounded by the recycling ring 32 which comprises an annular fixed part 33 constituting at its upper part a hopper 34 for introducing recycled materials 27 and an annular movable part 35 secured to the external wall drum comprising chutes and passage openings towards the interior of the drum, so as to pass the recycled materials poured into the hopper 34 inside the zone 23 of the drum.
  • the recycling ring 32 which comprises an annular fixed part 33 constituting at its upper part a hopper 34 for introducing recycled materials 27 and an annular movable part 35 secured to the external wall drum comprising chutes and passage openings towards the interior of the drum, so as to pass the recycled materials poured into the hopper 34 inside the zone 23 of the drum.
  • a small internal drum 37 is fixed inside the drum 2 coaxially and ensures the passage of the recycled materials. keys introduced into the drum, in the zone 23 located downstream of the recycling ring 32.
  • Helical fins 17 are fixed on the external surface of the drum 37 and transport recycled asphalt 27 to the zone 24.
  • Hook vanes 18 are fixed on the internal surface of the drum 37 and ensure lifting and falling, throughout the section of the drum 37, aggregates 7 dried and heated in the zone 21. In this way, the zone 24 and of course the zone 36 are completely isolated from the flame 16 of the burner by the recycling device and by the curtain of aggregates raised by the drum 37.
  • the aggregates 7 are then introduced at the entrance to the zone 24 by the internal part of the drum 37 and the recycled coated materials, by the external part.
  • the internal surface of the drum 2 is lined with flat vanes 28.
  • the recycled materials 27 introduced into the drum are mixed, by the action of the vanes 28, during the rotation of the drum, with the aggregates 7 coming from the drying zone 21, via the flame zone 22 and the drum 37.
  • the vanes 28 perform a mixing of the bed of granular materials constituted by the aggregates 7 and the bituminous mixes 27.
  • the mixing is carried out without significant lifting of the bed of materials which remains in contact with the wall of the drum.
  • the aggregates entering zone 24 have been dried and heated in zone 21 and in zone 22 and are therefore at a high temperature when they come into contact with the recycled coated materials 27.
  • the recycled coated materials are therefore heated by contact with the aggregates, which produces a softening and fusion of the bitumen layer covering the recycled asphalt.
  • the molten bitumen at least partially covers the aggregates during mixing, so that at the outlet 2b of the drum, the products pouring into the fixed chamber 9 of the mixer 10 consist partly of recycled materials covered with molten bitumen and partly by pre-coated aggregates.
  • the recycled asphalt is heated and mixed with the aggregates are carried out in a calm zone which is not subjected to the circulation of hot gases originating in zone 22, at the outlet 12a of the burner 13.
  • the cylindrical casing of the drum carries, at its outlet end 2b, a plurality of longitudinal members 40 extending the drum 2 in its axial direction, inside the fixed casing 9 of the mixer 10, as it can be seen in particular on Figures 1 and 7.
  • Each of the side members 40 carries a plurality of mixing paddles 41 arranged one after the other, along the length of the side member.
  • the longitudinal members 40 carrying the mixing paddles 41 constitute mixing means integral with the drum 2 and therefore movable in rotation about the axis XX ′ inside the fixed casing 9 of the mixer 10, during the rotation of the drum 2 .
  • the kneading means are constituted by eight longitudinal members 40 arranged at 45 ° from one another along the periphery of the drum and each carrying a plurality of pallets 41 consisting of steel plates fixed on the lanyards rons 40, removably, for example by means of screws. It is thus possible to replace worn or broken pallets, after a certain time of operation of the mixer.
  • the kneading assembly can be rotated without using other motor means than that allowing the rotation of the drum around its axis XX ′.
  • the mixer 10 is also equipped with a bitumen injection rod 42 which passes through the rear closure plate 9a of the mixer and opens at the inlet of the mixer, just downstream from the outlet 2b of the drum 2.
  • the hot pre-coated materials exiting through the end 2b of the drum 2 and pouring into the fixed casing 9 of the mixer 10 are therefore sprinkled with bitumen and then kneaded with this bitumen until they exit through the outlet chute 11 of the mixer 10.
  • the coated products 50 pouring by gravity into the chute 11 can then be taken up and possibly stored and then transported to a road construction site.
  • the outlet and discharge section of the mixes from the mixer 10 is shown in FIG. 9.
  • the device according to the invention also makes it possible to introduce additives into the materials being coated at any location of the mixer 10 whose envelope is fixed.
  • a device 45 for introducing pulverulent materials 46 into the mixing zone 36 In the entry zone of the mixer (see FIG. 6), is placed a device 45 for introducing pulverulent materials 46 into the mixing zone 36.
  • This device 45 consists of a hopper 47 in which a wheel is rotatably mounted. distribution pallets 48.
  • Such a powder introduction device can be used to introduce filler into the materials, at the entrance to the kneading zone 36.
  • This filler or pulverulent filler is necessary, in certain proportions, to ensure good quality for the coated. It may consist of all or part of the fines recovered in the gases leaving through the suction box 8 or by a powdery material with fine particle size such as cement.
  • the filler can be introduced in very good conditions at the entrance to the mixing zone by placing a distributor as described on the fixed casing of the mixer in the desired position.
  • the incorporation of the filler will thus be obtained satisfactorily and without the use of complex devices.
  • FIG. 8 shows a second device for introducing addition materials 51 which can be preferably, but not necessarily, placed slightly downstream of the filler introduction device 45, on the casing 9 of the mixer 10 .
  • the introduction device 51 makes it possible to introduce, into the kneading zone 36, predetermined doses of additives contained in bags or sachets 52.
  • the device 51 comprises a hopper 53 and a hatch 54 pivotally mounted about an axis 55 and which can be moved between the closed position shown in FIG. 8 and an open position in abutment on the lower wall of the hopper 53 (displacement shown by the double arrow 56).
  • Such additives can consist, for example, of products in the form of powders or fibers capable of modifying the mechanical or physical properties or even the color of the coated materials.
  • Such products can consist, for example, of asbestos, iron oxide or plastics.
  • the coated materials 50 poured through the chute 11 of the mixer 10 have a perfectly homogeneous composition.
  • the mixing zone 36 is perfectly isolated from the flame zone 22 and constitutes a calm zone in which hot gases do not circulate.
  • the gases produced by the flame 16 in the flame zone 22 are directed towards the outlet of the drum 2a and the suction box 8.
  • the recycled coated materials 27 introduced into the reheating and mixing zone 23 are not subjected to heat and to contact with the hot gases produced by the flame 16 or to the radiation of this flame, the zone for introducing the recycled coated materials 23 separating flame zone 22 of zone 24 completely.
  • the kneading zone 36 is not subjected to hot gases coming from the flame zone nor to the radiation of this flame.
  • bitumen vapors occur in zone 36 or in zone 24, these bitumen vapors would be drawn into flame zone 22 and forced to pass through the flame where they would be burned.
  • the device according to the invention has the advantage of allowing very flexible production of bituminous mixes incorporating any proportion of recycled mixtures and containing various additives, without rejection of bitumen vapor and by using a single device mounted on a platform.
  • the device requires, for the actuation of its moving parts, the use of a relatively low motive power.
  • the kneading assembly fixed to the outlet end of the drum and penetrating inside the fixed casing of the kneader can be constituted in a different manner from that which has been described.
  • the shape of the fixed casing of the mixer can be different from the cylindrical shape, this casing being able to have, for example, an octagonal cross section or one of any polygonal shape.
  • the fixed casing of the mixer can be perfectly coaxial with the drum or, on the contrary, slightly offset.
  • the devices for introducing bitumen and additives may have a different form from those which have been described.
  • the device according to the invention can be used for the manufacture of any bituminous coated product incorporating a certain amount of recycled used asphalt.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
EP89401546A 1988-06-13 1989-06-05 Vorrichtung zur Aufbereitung von bituminösem Mischgut in einem unbeweglichen Mixer Withdrawn EP0347281A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8807857 1988-06-13
FR8807857A FR2632670A1 (fr) 1988-06-13 1988-06-13 Dispositif de preparation de produits enrobes bitumineux a malaxeur fixe

Publications (1)

Publication Number Publication Date
EP0347281A1 true EP0347281A1 (de) 1989-12-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401546A Withdrawn EP0347281A1 (de) 1988-06-13 1989-06-05 Vorrichtung zur Aufbereitung von bituminösem Mischgut in einem unbeweglichen Mixer

Country Status (5)

Country Link
US (1) US4955722A (de)
EP (1) EP0347281A1 (de)
JP (1) JPH02112506A (de)
DK (1) DK286589A (de)
FR (1) FR2632670A1 (de)

Cited By (4)

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FR2657097A1 (fr) * 1990-01-18 1991-07-19 Ermont Cm Dispositif de preparation de produits enrobes bitumineux comportant un tambour a courants paralleles et un tambour a contre-courant et procede correspondant.
FR2658213A1 (fr) * 1990-02-12 1991-08-16 Ermont Cm Procede et dispositif de fabrication de produits enrobes bitumineux en continu ou en discontinu, a partir d'agregats et de bitume.
EP0562234A1 (de) * 1992-02-04 1993-09-29 MATRA S.r.l. Misch-Trocken-Trommel für die kontinuierliche Aufbereitung von bituminösem Mischgut unter Wiederverwendung von rückgewonnenem Material
CN105951561A (zh) * 2016-06-30 2016-09-21 湖南三路面机械有限公司 回收沥青加热装置

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US5080581A (en) * 1991-04-10 1992-01-14 Combustion Design Corporation Method and apparatus for drying waste materials
US6185842B1 (en) * 1990-10-17 2001-02-13 Gencor Industries, Inc. Apparatus and methods for controlling the temperature of exhaust gases in a drum mixer
US5259756A (en) * 1992-06-17 1993-11-09 Siemens Power Corporation Rotary kiln off-gas vent system
US5372458A (en) * 1993-07-15 1994-12-13 Flemmer; Henry System for treating drilling mud containing potassium chloride (KCl) for disposal
US5664882A (en) * 1996-04-04 1997-09-09 Cedarapids, Inc. System for concurrently remediating contaminated soil and producing hot mix asphalt
US6672751B2 (en) * 2001-01-18 2004-01-06 Michael R. Hawkins Counter-flow asphalt plant with combustion zone feed and exhaust gas heater
GB2371999A (en) * 2001-02-13 2002-08-14 James Mcintosh Drum apparatus for mixing and dispensing road repair material with variable inclination
US7357562B2 (en) * 2003-03-11 2008-04-15 Hawkins Michael R Counter-flow drum mixer asphalt plant with two stage mixing zone
US20070070801A1 (en) * 2005-09-23 2007-03-29 Cedarapids, Inc. Pre-combustion mix drum
US8220982B2 (en) 2008-07-22 2012-07-17 Terex Usa, Llc Energy efficient asphalt plant
FR2989393B1 (fr) * 2012-04-13 2014-06-06 Argumat Dispositif de fabrication de produits enrobes a chaud a sortie derivee et malaxeur externe et procede de fabrication d'enrobes a chaud correspondants
US10076854B2 (en) * 2015-03-24 2018-09-18 Qatar University Aggregate cooling for hot weather concreting
US20180142428A1 (en) * 2016-11-22 2018-05-24 Green Asphalt Co. Llc Recycled asphalt production apparatus

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EP0025186A1 (de) * 1979-09-08 1981-03-18 Alfelder Eisenwerke Carl Heise Kom.-Ges. vorm. Otto Wesselmann & Cie Verfahren und Vorrichtung zum Aufbereiten von bituminösem Mischgut in einer befeuerten Drehtrommel
US4427376A (en) * 1982-07-16 1984-01-24 Wylie Manufacturing Company Apparatus for heating aggregate, recycled asphalt and the like
DE3423521A1 (de) * 1984-06-26 1986-01-02 ATS Asphalttechnik und Straßenbaugeräte GmbH & Co KG, 6236 Eschborn Verfahren zur aufbereitung und herstellung von asphaltmischgut unter wiederverwendung alten asphaltmaterials sowie eine vorrichtung zur durchfuehrung des verfahrens
DE3616995A1 (de) * 1986-05-21 1987-11-26 Riede Hermann Strassen Tiefbau Trockentrommel als teil einer trocken- und mischanlage zur herstellung von asphaltheissmischgut fuer fahrbahndecken od. dgl.
WO1988008052A1 (en) * 1987-04-16 1988-10-20 Marini S.P.A. Asphaltic concrete production apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657097A1 (fr) * 1990-01-18 1991-07-19 Ermont Cm Dispositif de preparation de produits enrobes bitumineux comportant un tambour a courants paralleles et un tambour a contre-courant et procede correspondant.
EP0437990A1 (de) * 1990-01-18 1991-07-24 Ermont. C.M. Vorrichtung zur Aufbereitung von bituminösem Mischgut mit einer Gleichstrom- und einer Gegenstromtrommel und entsprechendes Verfahren
US5178456A (en) * 1990-01-18 1993-01-12 Ermont C. M. Device for the preparation of bituminous coated products comprising a drum with parallel streams and a countercurrent drum and corresponding process
FR2658213A1 (fr) * 1990-02-12 1991-08-16 Ermont Cm Procede et dispositif de fabrication de produits enrobes bitumineux en continu ou en discontinu, a partir d'agregats et de bitume.
EP0442790A1 (de) * 1990-02-12 1991-08-21 Ermont. C.M. Vorrichtung zur kontinuierlichen oder diskontinuierlichen Herstellung von bitumenumhüllten Stoffen, mit Aggregaten und Bitumen
EP0562234A1 (de) * 1992-02-04 1993-09-29 MATRA S.r.l. Misch-Trocken-Trommel für die kontinuierliche Aufbereitung von bituminösem Mischgut unter Wiederverwendung von rückgewonnenem Material
CN105951561A (zh) * 2016-06-30 2016-09-21 湖南三路面机械有限公司 回收沥青加热装置

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DK286589D0 (da) 1989-06-12
US4955722A (en) 1990-09-11
FR2632670A1 (fr) 1989-12-15
JPH02112506A (ja) 1990-04-25
DK286589A (da) 1989-12-14

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