EP0347271A1 - Dispositif de préparation de produits enrobés bitumineux constitué par un tambour - Google Patents

Dispositif de préparation de produits enrobés bitumineux constitué par un tambour Download PDF

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Publication number
EP0347271A1
EP0347271A1 EP89401434A EP89401434A EP0347271A1 EP 0347271 A1 EP0347271 A1 EP 0347271A1 EP 89401434 A EP89401434 A EP 89401434A EP 89401434 A EP89401434 A EP 89401434A EP 0347271 A1 EP0347271 A1 EP 0347271A1
Authority
EP
European Patent Office
Prior art keywords
drum
zone
materials
vanes
flame
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Withdrawn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
EP89401434A
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German (de)
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 EP0347271A1 publication Critical patent/EP0347271A1/fr
Withdrawn legal-status Critical Current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
    • E01C19/1027—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 and liquid bitumen and optionally recycled bituminous mixes.
  • Devices for preparing bituminous mixes for road surfaces, from new aggregates, liquid bitumen and powders in which recycled used bituminous mixes are optionally incorporated. These devices generally consist of a large cylindrical drum rotatably mounted on a platform around its axis and slightly inclined relative to the horizontal plane. New aggregates and powders are introduced into the drum at one of its ends. Asphalt recycled in granular form is introduced by a recycling ring surrounding the drum in an intermediate zone between its two ends.
  • 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 lifting 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 a 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 in 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. .
  • drum-dryer-mixers that is to say drum-dryer-mixers where the hot gases circulate inside the drum in the direction opposite to the direction of circulation of the solid materials.
  • a burner comprising a very elongated body which penetrates into the drum by its lower outlet end, so that the end of the burner from which the flame develops located relatively distant from the drum outlet.
  • the zone for mixing solid materials with liquid bitumen and possibly the introduction zone. to reheat and mix the recycled asphalts are placed between the drum area where the flame develops and the drum outlet, around the burner body.
  • Such devices make it possible to largely avoid the formation of bitumen vapor since the hot gases coming from the burner and circulating against the current with respect to the new aggregates introduced by the inlet end of the drum are directed towards this end. inlet, that is to say opposite to the area or areas receiving bituminous materials.
  • the object of the invention is therefore to propose a device for preparing bituminous coated products from new aggregates and liquid bitumen and optionally recycled bituminous coated materials
  • a device for preparing bituminous coated products from new aggregates and liquid bitumen and optionally recycled bituminous coated materials comprising a cylindrical drum mounted to rotate around its axis and slightly inclined relative to in the horizontal plane, a device for feeding cold and wet aggregates through the upper inlet end of the drum and a burner penetrating into the drum through its lower outlet end and opening into a flame zone remote from the ends of the drum , so that hot gases from the burner flame and the new aggregates circulate in opposite directions, the drum comprising, on its internal wall, in a mixing zone situated between the flame zone and the outlet end of the drum, blades for mixing solid materials circulating in the drum and liquid bitumen introduced at the entrance to the mixing zone, this device making it possible to perfectly separate the flame zone from the zones of the drum receiving bituminous materials, without complicating the structure of the drum and
  • means for lifting the solid materials in circulation integral with the internal wall of the drum, are arranged between the flame zone and the mixing zone to constitute a dense curtain of materials insulating the mixing zone from the zone of flame, by lifting followed by a fall of solid materials throughout the drum section during rotation of the drum.
  • 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 outlet end 2b of the drum opposite its inlet end 2a is engaged inside a box 10, the lower part 11 of which forms a discharge chute for bituminous coated products leaving the drum through its end 2b.
  • the box 10 is fixed to the platform 1 and comprises a rear closing plate 10a which is crossed by the elongated cylindrical body 12 of a burner 13 comprising a fan 14 carried by the platform.
  • the body of the burner 12 disposed along the axis XX ′ of the drum 2 opens at its end 12a inside the drum 2, at a certain distance from its outlet end 2b engaged in the box 10.
  • the flame 16 of the burner develops inside the drum, starting from the end 12a of the body 12 of the burner in an area 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 internal surface of the drum in the zone considered and by the function provided by this zone, when the device is in service. From the end 2a of the drum to the outlet end 2b, the latter comprises an introduction zone 20, a drying zone 21, a flame zone 22, a zone for introducing recycled asphalt 23 , a reheating and mixing zone 24 and a kneading zone 30. As will be explained below, a dense curtain of solid materials falling in cascade in the section of the drum is formed, in the recycling zone 23, by the solid materials circulating in the drum, so that the zone 23 achieves a complete separation between the zone 22 and the zones 24 and 30.
  • 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 traversed 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 51).
  • the drum is inclined so that its inlet end 2a is at a level higher than its outlet end 2b.
  • Solid materials and in particular aggregates 7 therefore circulate in the drum in the opposite direction to the direction of circulation 51 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 52), 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 introduced into the drum, in the part of the zone 23 located downstream of the recycling ring 32 .
  • the internal surface of the wall of the drum 2 is lined with hook blades 18 which ensure the lifting and the fall in the whole section of the drum 2 of the aggregates 7 dried and heated from the flame zone 22 and transported by the vanes 26.
  • the surface in of the small drum 37 is lined with hooked vanes 18 ′ ensuring the lifting of the aggregates throughout the section of the drum 37.
  • zone 23 thus ensures complete separation between zone 22 where the flame 16 develops and zones 24 and 30 located downstream.
  • the separation is ensured on the one hand by the dense curtain of solid materials formed by the vanes 18 throughout the section of the drum 2 and on the other hand by the rotating part of the recycling ring secured to the casing of the drum 2 and the dense curtain of solid aggregates formed throughout the section of the small drum 37 by the vanes 18 ′, during the rotation of the drum.
  • Helical fins 17 are fixed on the outer surface of the drum 37 and transport the recycled asphalt 27 introduced by the hopper 34 to the zone 24.
  • the aggregates 7 arrive in zone 24 through the internal part of the drum 37 while the recycled coated products 27 arrive in this zone 24 through the external part of the drum 37.
  • the internal surface of the drum 2 is provided 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 a 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 kneading zone 30 consist partly of recycled materials covered with molten bitumen and partly with 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.
  • a bitumen injection pipe 42 passing through the rear wall 10a of the box 10 enters the drum at its end 2b and opens at the entrance to the mixing zone 30.
  • a transport device powder 40 consisting of a tube in which a conveying screw rotates also passes through the plate 10a so as to penetrate longitudinally into the drum and to lead to the entry of the mixing zone 30 slightly downstream from the end of the cane 42. In this way, solid materials in Troducts in the mixing zone are first coated with bitumen and then added with a certain quantity of pulverulent making it possible to adjust the composition of the bituminous material being produced in the drum.
  • the hot pre-coated materials leaving the reheating and mixing zone 24 are therefore sprinkled with bitumen when they enter the kneading zone 30.
  • a pulverulent material is optionally added to the pre-coated material sprayed with bitumen, the pulverulent material thus being retained by adhesion, by bitumen. This prevents any flight of fine materials into the outlet part of the drum, which avoids the outlet of dusty gases and ensures perfect dosing of the quantity of powder in the mixes produced in the mixing zone.
  • the blades 31 ensure a lifting of the materials being kneaded with the bitumen in the zone 30, to the highest point of the drum, then a fall in rain of these materials practically in all the drum section.
  • This intense agitation produces an effective mixing throughout the zone 30.
  • the pre-coated aggregates arriving at the entrance to the zone 30 are at a high temperature, the aggregates 7 having been strongly overheated in the zones 21 and 22.
  • the dense curtain of materials constituted by the aggregates falling in the section of the drum, inside the zone 23, makes it possible to considerably improve the operation and the performances of the drum-drier and kneader, in particular with regard to the points which will be shown below.
  • the curtain of materials constitutes a screen protecting the reheating and mixing zone 24 and a fortiori the kneading zone 30 of the flame 16 of the burner.
  • the bitumen or bituminous products introduced into these zones 24 and 30 therefore do not undergo excessive heating and its vaporization rate is very low.
  • the small amount of bitumen vapor formed in zones 24 and 30 is sucked through the curtain of materials in zone 23 which makes it possible to condense and retain part of the bitumen vapors.
  • the curtain plays the role of an active filter.
  • the very small amount of steam reaching zone 22 is burned by flame 16 of the burner.
  • the gas flow 51 circulating in the zone 21 in the direction of the suction box 8 therefore no longer contains bitumen vapor.
  • the vapor flow passing through the curtain of zone 23 is finely divided, which facilitates its combustion in zone 22.
  • the dense curtain of materials in zone 23 also has the advantage of allowing efficient recovery of the thermal energy released by the burner flame towards the outlet of the drum. This thermal energy is transmitted to the aggregates, mainly by radiation. We increase thus the thermal efficiency of the drum-dryer-mixer.
  • the device according to the invention Compared to the prior art installations comprising a drum dryer and a separate fixed-jacket mixer, the device according to the invention has the advantage of greater simplicity and lower cost since it consists of a simple rotating drum with continuous operation.
  • the presence of the curtain of materials also makes it possible to virtually eliminate the discharges of bitumen vapor.
  • these discharges were very small but not zero; this was achieved with a more complex installation in terms of its structure and operation.
  • the device according to the invention Compared to the counter-current gas circulation dryer-mixer-mixer comprising a metal screen separating the flame zone from the zones receiving bituminous products, the device according to the invention has the advantage of using a screen consisting of a curtain of materials, that is to say an indestructible element and whose filtration and gas distribution functions cannot be obtained using a metal screen. In addition, the circulation of aggregates in the drum is absolutely not disturbed.
  • the superheated aggregates 7 are brought into intimate contact with the recycled asphalt 27 thanks to the flat vanes 28 which ensure gentle mixing of the mixture and which slow down the speed of advance in the drum 2.
  • the solid materials remain in mass against the wall of the drum and the possible release of bitumen vapors in this area is very reduced.
  • the pulverulent or filler product which is introduced by the device 40 is immediately picked up by the pre-coated products or the liquid bitumen at the entrance to the zone 30. This therefore prevents a flight of filler and if this flight occurs despite everything in a limited way, the filler is captured by the coated materials which rain in the drum and which constitute a filter for the very weak gas current circulating in the terminal part of the drum.
  • the filler introduced into the mixes can 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 invention can be applied very advantageously to a drum-drier-mixer in which there is no recycling of mixtures.
  • the dense curtain of material is formed in an area located downstream of the flame area and upstream of the terminal kneading area of the drum.
  • the drum has lifting vanes, for example of the hook vane type having a high capacity for retaining materials.
  • Several sets of successive offset blades can be used to make the curtain more dense. This zone where the curtain is made up can replace both zone 23 and zone 24 of the drum described in the exemplary embodiment.
  • this small drum can be arranged over the entire length of the recycled introduction zone or, on the contrary, only over a part of the length of this zone as in the case of the device which has been described.
  • This second arrangement is advantageous since it facilitates the passage of the dry aggregates from the large diameter part to the small diameter part of the zone for introducing the recycled material.
  • this arrangement makes it possible to create a dense curtain in the entire section of the drum immediately after the flame zone.
  • the device according to the invention can be used for the manufacture of any bituminous coated product, as well from new aggregates and liquid bitumen only as from new aggregates, liquid bitumen and coated materials bituminous recycled.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
EP89401434A 1988-06-13 1989-05-25 Dispositif de préparation de produits enrobés bitumineux constitué par un tambour Withdrawn EP0347271A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8807856 1988-06-13
FR8807856A FR2632669B1 (fr) 1988-06-13 1988-06-13 Dispositif de preparation de produits enrobes bitumineux constitue par un tambour

Publications (1)

Publication Number Publication Date
EP0347271A1 true EP0347271A1 (fr) 1989-12-20

Family

ID=9367213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401434A Withdrawn EP0347271A1 (fr) 1988-06-13 1989-05-25 Dispositif de préparation de produits enrobés bitumineux constitué par un tambour

Country Status (5)

Country Link
US (1) US4948261A (da)
EP (1) EP0347271A1 (da)
JP (1) JPH02236303A (da)
DK (1) DK286489A (da)
FR (1) FR2632669B1 (da)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0653517A1 (en) * 1993-11-17 1995-05-17 Giorgio Ghirardelli Plant for producing bituminous conglomerate in continuous work cycle
US5556197A (en) * 1994-11-04 1996-09-17 Gentec Equipment Company Asphalt plant for both continuous and batch operation
CN105386387A (zh) * 2015-12-16 2016-03-09 郝志付 一种再生沥青混合料加热烘干筒
CN105970771A (zh) * 2016-07-08 2016-09-28 山东省路桥集团有限公司 沥青厂拌热再生干燥滚筒
CN117026727A (zh) * 2023-10-10 2023-11-10 福建省铁拓机械股份有限公司 一种用于沥青混合料厂拌热再生设备的自清洁烘干滚筒

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5664881A (en) * 1993-11-16 1997-09-09 Maxam Equipment, Inc. Counter-flow asphalt plant with multi-stage combustion zone overlapping the mixing zone
US5364182A (en) * 1993-11-16 1994-11-15 Michael Hawkins Counter-flow asphalt plant with multi-stage combustion zone overlapping the mixing zone
US5664882A (en) * 1996-04-04 1997-09-09 Cedarapids, Inc. System for concurrently remediating contaminated soil and producing hot mix asphalt
FR2752254B1 (fr) * 1996-08-09 1998-10-30 Argumat Dispositif de malaxage de granulats et de bitume liquide en vue de la realisation d'enrobes bitumineux
US5772317A (en) * 1996-08-27 1998-06-30 Gencor Industries, Inc. Counterflow drum mixer for making asphaltic concrete and methods of operation
SE509095C2 (sv) * 1997-04-25 1998-12-07 Asfaltsteknik I Gaelloe Ab Sätt och anordning för beredning av asfalt
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
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421345A (en) * 1944-11-04 1947-05-27 Kenneth E Mcconnaughay Mixer
EP0032468A2 (fr) * 1980-01-11 1981-07-22 Creusot-Loire Dispositif pour la fabrication de produits enrobés bitumineux à partir d'agrégats, de bitume et de matières solides susceptibles de se dégrader à haute température
US4332478A (en) * 1979-05-16 1982-06-01 Barber-Greene Company Method and apparatus for reducing smoke emissions in an asphalt drum mixer
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215941A (en) * 1976-08-26 1980-08-05 Mendenhall Robert Lamar Method and apparatus for recycling asphalt-aggregate compositions
US4787938B3 (en) * 1986-06-30 1999-11-30 Standard Havens Countercurrent drum mixer asphalt plant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421345A (en) * 1944-11-04 1947-05-27 Kenneth E Mcconnaughay Mixer
US4332478A (en) * 1979-05-16 1982-06-01 Barber-Greene Company Method and apparatus for reducing smoke emissions in an asphalt drum mixer
EP0032468A2 (fr) * 1980-01-11 1981-07-22 Creusot-Loire Dispositif pour la fabrication de produits enrobés bitumineux à partir d'agrégats, de bitume et de matières solides susceptibles de se dégrader à haute température
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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0653517A1 (en) * 1993-11-17 1995-05-17 Giorgio Ghirardelli Plant for producing bituminous conglomerate in continuous work cycle
US5556197A (en) * 1994-11-04 1996-09-17 Gentec Equipment Company Asphalt plant for both continuous and batch operation
CN105386387A (zh) * 2015-12-16 2016-03-09 郝志付 一种再生沥青混合料加热烘干筒
CN105970771A (zh) * 2016-07-08 2016-09-28 山东省路桥集团有限公司 沥青厂拌热再生干燥滚筒
CN105970771B (zh) * 2016-07-08 2018-08-21 山东省路桥集团有限公司 沥青厂拌热再生干燥滚筒
CN117026727A (zh) * 2023-10-10 2023-11-10 福建省铁拓机械股份有限公司 一种用于沥青混合料厂拌热再生设备的自清洁烘干滚筒
CN117026727B (zh) * 2023-10-10 2024-01-02 福建省铁拓机械股份有限公司 一种用于沥青混合料厂拌热再生设备的自清洁烘干滚筒

Also Published As

Publication number Publication date
JPH02236303A (ja) 1990-09-19
DK286489A (da) 1989-12-14
FR2632669A1 (fr) 1989-12-15
FR2632669B1 (fr) 1990-10-05
DK286489D0 (da) 1989-06-12
US4948261A (en) 1990-08-14

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