EP4141170A1 - Mischgutproduktionsanlage und verfahren zur herstellung von mischgut in einer solchen mischgutproduktionsanlage - Google Patents

Mischgutproduktionsanlage und verfahren zur herstellung von mischgut in einer solchen mischgutproduktionsanlage Download PDF

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Publication number
EP4141170A1
EP4141170A1 EP22191744.6A EP22191744A EP4141170A1 EP 4141170 A1 EP4141170 A1 EP 4141170A1 EP 22191744 A EP22191744 A EP 22191744A EP 4141170 A1 EP4141170 A1 EP 4141170A1
Authority
EP
European Patent Office
Prior art keywords
drum
aggregates
combustion chamber
recycled
asphalt
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
EP22191744.6A
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English (en)
French (fr)
Other versions
EP4141170C0 (de
EP4141170B1 (de
Inventor
Antoine Carrasco
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.)
Argumat SAS
Original Assignee
Argumat SAS
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Filing date
Publication date
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Publication of EP4141170A1 publication Critical patent/EP4141170A1/de
Application granted granted Critical
Publication of EP4141170C0 publication Critical patent/EP4141170C0/de
Publication of EP4141170B1 publication Critical patent/EP4141170B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E01C19/1004—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
    • E01C19/1054—Preparing mixtures of which at least part of the solid ingredients has previously been deposited on the surface, excluding penetrating or surface dressing, e.g. in situ mixing, mixing involving lifting of spread or windrowed aggregate
    • 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
    • E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
    • E01C19/1068—Supplying or proportioning the ingredients
    • E01C19/1072—Supplying or proportioning the ingredients the solid ingredients
    • 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
    • E01C2019/1095—Mixing containers having a parallel flow drum, i.e. the flow of material is parallel to the gas flow

Definitions

  • the present invention relates to the general technical field of the production of asphalt mixes, in particular asphalt mixes for road surfacing, with recycling of asphalt mix aggregates.
  • the present invention relates more specifically to an asphalt production installation, as well as to a method for manufacturing asphalt in such an asphalt production installation.
  • a rotary dryer drum is generally used for this, for example with parallel currents, comprising a first end through which fresh aggregates are introduced, a combustion chamber in which is generated a stream of hot air capable of drying and heating the fresh aggregates, and at least one drying zone.
  • the drum may optionally include a kneading zone with a binder (we then speak of a “dryer-mixer drum”).
  • a dryer drum comprising a device for introducing asphalt aggregates to be recycled, located along the drum between the combustion chamber and the drying zone.
  • the recycling rate is defined as the ratio between, on the one hand, the quantity of asphalt aggregate, and, on the other hand, the sum of the quantity of aggregate of asphalt and the quantity of fresh aggregate used in the composition of the final asphalt.
  • the use of asphalt mixes requires controlling the temperature of the hot gas used for heating and drying the fresh aggregates, to prevent the heating of the asphalt mixes to be recycled from emitting toxic volatile organic compounds and/or or causes premature aging of the bitumen.
  • the quantity of fresh aggregates entering into the composition of the final asphalt has an influence on the temperature of the hot gas: the greater the quantity of fresh aggregate entering the drum (and therefore the lower the recycling rate), the more the hot gas stream is cooled on its arrival in the recycling zone.
  • the objects assigned to the invention therefore aim to remedy the drawbacks set out above and to propose new installation and process for the production of asphalt mixes, the design of which makes it possible to produce asphalt mixes with a high recycling rate of asphalt mix aggregates while by limiting the emission of pollutants.
  • Another object of the invention aims to propose new installation and process for producing asphalt mixes making it possible to effectively and quickly lower the temperature of the enclosure of the drum at the level of the combustion chamber.
  • Another object of the invention aims to provide a new installation for the production of compact construction asphalt.
  • Another object of the invention aims to provide a new plant for producing asphalt with excellent energy efficiency.
  • the invention relates to an installation 1 for producing asphalt, intended for example for the production of road surfacings.
  • fresh aggregate refers to new aggregate, generally wet and cold and which has not yet been used in the production of asphalt mixes, and therefore which has never been dried, heated or mixed. to a binder.
  • the installation 1 comprises a dryer drum 3, which comprises an elongated enclosure 30 extending along a central axis X3, this dryer drum 3 being rotatably mounted around the central axis X3.
  • the dryer drum 3 has a first end 5 for the introduction of fresh aggregates and a second end 7 opposite along the central axis X3 forming an outlet from the dryer drum 3.
  • the central axis X3 is shown horizontal in the figures. In practice, it is common for the central axis X3 to be slightly inclined with respect to the horizontal, so that the aggregates are driven by gravity from the first end 5, which then forms a raised end, to the second end 7, which then forms a low end.
  • the direction of progression of the aggregates from the first end 5 towards the second end 7 defines the direction of advancement of the aggregates.
  • upstream and downstream are respectively used to qualify elements oriented respectively in the direction of the first end 5 and the second end 7.
  • the installation 1 also comprises a combustion chamber 9 linked in rotation to the dryer drum 3.
  • the combustion chamber 9 is integral with the dryer drum 3 in its rotary movement around the axis X3.
  • the installation 1 also comprises a burner 11 configured to generate, in the combustion chamber 9, a flow of hot gas, represented by the arrow F1, flowing along the central axis X3 in the dryer drum 3 from the first end 5 towards the second end 7.
  • a flow of hot gas represented by the arrow F1
  • the circulation of the aggregates and of the flow of hot gas F1 is in "co-current", that is to say in the same direction along the central axis X3 of the dryer drum 3.
  • the drum -drier therefore advantageously forms, as illustrated, a parallel-current or co-current drum-dryer.
  • the burner 11 is advantageously fixed with respect to the dryer drum 3, that is to say that the burner 11 is not fixed to the drum 3 in rotation around the axis X3.
  • the installation 1 comprises a system for introducing fresh aggregates into the dryer drum 3.
  • the introduction of fresh aggregates is done in the combustion chamber 9.
  • the introduction can be done according to a horizontal direction, for example with a conveyor belt, according to the arrow F2, or else according to an inclined direction, for example with a chute, according to the arrow F3.
  • the installation 1 also comprises at least a first device 13 for introducing coated aggregates to be recycled, arranged along the drum 3 downstream of the combustion chamber 9 and configured to allow the introduction of coated aggregates to be recycled at the within the drum 3.
  • This introduction device 13 is preferably formed by a projecting part of the enclosure 30, having orifices for the introduction of asphalt aggregates, and communicating with the interior of the drum 3 by orifices formed through the enclosure 30.
  • the introduction device 13 may have the shape of a ring surrounding the drum 3, and may or may not be integral integral in rotation with the drum 3 around the axis X3.
  • the introduction device 13 defines a first recycling zone 15 of the drum 3, that is to say the part of the drum 3 extending along the axis X3 along the introduction device 13, and in which the asphalt aggregates to be recycled can be poured into the drum 3 in a direction materialized for example by the arrow F13.
  • the drum 3 Between the combustion chamber 9 and the introduction device 13, the drum 3 comprises a first drying zone 12, that is to say a section of the drum 3 provided for example with lifting vanes 12a fixed on one side inside the enclosure 30, and designed specifically to raise the aggregates and overturn them in the drum 3 by forming a curtain through which the flow of hot gas F1 circulates, so as to carry out a heat exchange making it possible to dry and/or heat the aggregates.
  • a first drying zone 12 that is to say a section of the drum 3 provided for example with lifting vanes 12a fixed on one side inside the enclosure 30, and designed specifically to raise the aggregates and overturn them in the drum 3 by forming a curtain through which the flow of hot gas F1 circulates, so as to carry out a heat exchange making it possible to dry and/or heat the aggregates.
  • the drum 3 also comprises a second drying zone 14 located between the introduction device 13 and the second end 7, which second drying zone 14 may or may not be provided with lifting vanes, and may for example be devoid of vanes. lift but equipped with mixing blades to ensure the mixing of fresh aggregates and aggregates to be recycled.
  • the installation 1 also comprises a cooling channel 17 surrounding at least partially, and preferably substantially totally, the combustion chamber 9.
  • the dryer drum 3 comprises for example an internal sleeve, that is to say an elongated tubular element , arranged coaxially with the drum 3 and inside the enclosure 30 of the dryer drum 3 and which forms a wall 19 of the combustion chamber 9.
  • the drum 3 comprises an envelope external 30'.
  • the radial space defined between the wall 19 and the outer casing 30' advantageously forms the cooling channel 17.
  • the radial space between the wall 19 and the outer casing 30' can be from 20 to 300mm.
  • the cooling channel 17 has an annular shape centered on the central axis X3.
  • the cooling channel 17 extends longitudinally between an upstream end (preferably located at the level of the first end 5) and a downstream end, along a length (measured along the longitudinal axis X3) which corresponds to at least 50 %, preferably at least 80%, and even more preferably substantially 100%, of the length of the combustion chamber 9, within which extends longitudinally, preferably over substantially the entire length of the combustion chamber 9, the flame generated by the burner 11.
  • the cooling channel 17 surrounds the combustion chamber 9 without communicating with the latter over the entire length of said cooling channel 17, that is to say that the fluid of cooling present within the cooling channel 17 does not substantially come into contact with the flame and/or with the flow of hot gas F1 over the length of the wall 19.
  • said wall 19 is advantageously formed by a solid wall, tight to the cooling fluid (which is preferably a gas), so that the cooling fluid cannot pass through said wall 19 in its thickness, over the entire length of said wall 19.
  • the channel cooling 17 preferably does not substantially communicate with the combustion chamber 9 between its upstream and downstream ends, and is for example open to the interior of the enclosure 30 only at the level of said downstream end, which makes it possible to introduce the cooling fluid within the enclosure 30 essentially beyond the combustion chamber 9, thus avoiding disturbing the combustion, while ensuring particularly efficient cooling of the outer casing 30'.
  • the outer casing 30' is made in one piece with the enclosure 30 of the drum 9, and the wall 19 of the combustion chamber 9 is formed by a sleeve internal to the enclosure 30.
  • the wall 19 of the combustion chamber 9 is made in one piece with the enclosure 30, and that the outer casing 30' is a sleeve, a jacket, or in general an elongated tubular element disposed around enclosure 30.
  • the installation 1 also comprises a device 21 for injecting a cooling fluid, represented by the arrow F4, into the cooling channel 17.
  • the cooling fluid may in particular be a gas or gas mixture, for example ambient air captured outside the drum 3.
  • the cooling fluid can also be a liquid.
  • Said injection device 21 is preferably located at said downstream end and at first end 5, as illustrated in the figures.
  • the installation 1 also comprises a control and regulation system 23 for controlling the injection device 21 in such a way that the flow of hot gas F1 presents in the first recycling zone 15 a temperature which is less than 700°C.
  • the cooling fluid flow is controlled to ensure that the temperature of the hot gas flow F1 measured in the first recycling zone 15 remains below 700°C. If the measured temperature is above 700°C, the coolant flow rate is increased until the measured temperature is below 700°C.
  • the circulation of the cooling fluid in the cooling channel 17 has the effect of cooling the wall 19 by conduction, and therefore the flow of hot gas F1 which circulates in the combustion chamber 9. Part of the heat of the flow of hot gas F1 is picked up by the wall 19, which makes it possible to lower the temperature of the flow of hot gas F1.
  • the asphalt aggregates to be recycled are not exposed to too high a temperature in the recycling zone 15, which would risk degrading them by emitting harmful emissions.
  • the implementation of the cooling channel 17 makes it possible to lower the temperature of the enclosure 30 (and in particular of the outer face of the wall forming said enclosure) along the combustion chamber 9, in such a way that this can be, for example, less than 450°C. It is thus possible to avoid excessive radiation, and to set up devices on the enclosure 30 and on the outer casing 30', such as for example a tread, sensors, control devices, fluid injection, delivery of aggregates, which is not possible if the temperature of the enclosure 30 along the combustion chamber 9 is too high.
  • the cooling fluid is gaseous, and is formed for example by a gaseous mixture.
  • the cooling channel 17 opens downstream in the drum 3 at the end of the wall 19 downstream of the combustion chamber 9. Most, and preferably almost all or all of the cooling gas mixture is then injected into the drum 3 downstream of the combustion chamber 9, after having circulated in the cooling channel 17.
  • the cooling gas mixture is not directly injected into the combustion chamber 9 in order to avoid degradation of the combustion and the emission of pollutants, and to make it possible to optimize the cooling of the outer casing 30'.
  • the flow of hot gas F1 downstream of the combustion chamber 9 is formed of a mixture comprising partly the flow of gas heated in the combustion chamber 9 and partly the flow of cooling gas. Such an arrangement makes it possible to further lower the temperature of the flow of hot gas F1.
  • the cooling channel 17 does not open downstream in the drum 3 at the end of the wall 19 and the cooling liquid is therefore not injected into drum 3.
  • the installation 1 can comprise a flow regulator 22 controlling the flow of cooling fluid entering the cooling channel 17.
  • the flow regulator 22 is advantageously controlled by a control signal emitted by the control and regulation system 23.
  • the installation 1 can comprise a temperature sensor 24 making it possible to measure the temperature of the flow of hot gas F1 in the first recycling zone 15, and to transmit a measurement signal to the control and regulation system 23.
  • control and regulation system 23 is configured to maintain the temperature of the flow of hot gas F1 in the first recycling zone substantially between 600°C and 650°C.
  • control and regulation system 23 can be configured to maintain the temperature of the hot gas flow F1 below 220° C. at the outlet of the dryer drum 3. Lower the outlet temperature of the hot gas flow F1 below 220°C reduces polluting gas emissions.
  • the installation may include a temperature sensor 26 configured to communicate a measurement signal to the control and regulation system 23.
  • control and regulation system 23 controls the injection device 21 in such a way that the flow of hot gas F1 has at the outlet of the dryer drum 3 a temperature which is less than 220°C.
  • the cooling fluid flow is controlled to ensure that the temperature of the hot gas flow F1 measured at the outlet of the dryer drum 3 remains below 220°C. If the measured temperature is above 220°C, the coolant flow rate is increased until the measured temperature is below 220°C.
  • the cooling fluid may comprise at least in part a gas or a gaseous mixture, represented by the arrow F5, coming from the outlet of the dryer drum 3.
  • the installation 1 comprises a device 25 for recovering the gas at the outlet of the drum 3, and a circuit for conveying said gas to the injection device 21 of the cooling fluid.
  • the recovery device 25 captures the gases which leave the drum via the second end 7, for example by means of a suction system, a collector or a chimney, advantageously directs them towards a filtration device 27, then to the routing circuit formed by a pipe 29 connecting the filtration device 27 and the flow regulator 22.
  • the drum 3 may comprise a drying zone 31 defined by a downstream section of the combustion chamber 9, making it possible to carry out a first lifting in the form of a curtain of the aggregates, and to dry and/or heat them with the flow of hot gas F1 when it is at high temperature.
  • the installation 1 comprises a binder supply device 33 and a mixing device configured to mix the binder with hot and dried asphalt at the outlet of the drum 3.
  • the binder is generally a bitumen.
  • the kneading device may comprise a kneader 37 external to the drum 3, as shown in the figure 1 .
  • the mixer 37 generally comprises a casing in which are actuated rotary members mixing the heated and dried aggregates with the binder. The heated and dried aggregates leaving the drum 3 are poured into the mixer 37 according to the arrow F6.
  • the installation 1 can comprise a temperature sensor 45 configured to measure the temperature of the mixture of coated materials and aggregates leaving the drum 3, in order to check that the latter is at a suitable temperature for the phase mixing with the binder.
  • the temperature sensor 45 can be configured to communicate with the control and piloting system 23 to pilot the operation of the installation 1 according to the temperature value read by the temperature sensor 45.
  • the mixing device may comprise a mixing zone 35 defined by the drum 3 between the second drying zone 14 and the second end 7.
  • the mixing zone 35 differs from drying zones 12 and 14 in that the blades which are fixed to the internal face of enclosure 30 are specifically designed to obtain a homogeneous mixture between the dried and heated aggregates and the binder.
  • the mixing device comprises an external mixer 37
  • the hot and dried aggregates are poured out of the drum 3 into the external mixer 37
  • the binder supply device 33 is configured to convey the binder into the mixer external 37.
  • the binder supply device 33 is configured to convey the binder into the mixing zone 35.
  • the binder supply device 33 is configured to convey the binder both into the mixing zone 35 and into the external mixer 37.
  • the binder supply device 33 comprises for this purpose binder supply members, in particular pipes or chutes.
  • the drum 3 may comprise at least a second device for introducing (not shown) coated aggregates to be recycled, arranged along the drum 3 downstream of the first device 13 for introducing coated aggregates to be recycled, and configured to allow the introduction of an additional quantity of coated aggregates to be recycled within the drum 3.
  • the two introduction devices are spaced apart along the central axis X3. The presence of two devices for introducing asphalt aggregates to be recycled makes it possible to incorporate the coated material obtained two aggregates of coated materials to be recycled of different characteristics, for example of different grain sizes.
  • the asphalt aggregates to be recycled introduced by the first introduction device 13 can be of coarse particle size
  • the asphalt mix aggregates to be recycled introduced by the second introduction device can be of finer particle size.
  • the drum 3 may comprise at least one additional device 39 for introducing fresh aggregates and/or coated aggregates to be recycled, arranged along the drum 3 downstream of the first device 13 for introducing coated aggregates to be recycled.
  • the additional device 39 for introducing fresh aggregates and/or coated aggregates to be recycled is advantageously located towards the outlet of the drum 3, which makes it possible to perform a function of possibly cooling the flow of hot gas at the outlet of the drum by heat exchange with fresh aggregates and/or asphalt aggregates to be recycled, thus allowing energy recovery in the hot gases.
  • the drum 3 can also comprise openings 41, which put the inside of the drum 3 in communication with the outside, through the enclosure 30, located upstream of the second introduction device 39.
  • the openings 41 being configured to allow the discharge of the hot and dried aggregates produced upstream of the second introduction device 39 out of the drum 3.
  • the hot and dried aggregates produced upstream of the second introduction device 39 are discharged into the external mixer 37.
  • the installation comprises a system 43 for recovering a mixture comprising the dried and heated aggregates and the asphalt aggregates at the outlet of the drum 3, and returning this mixture to the first end 5 of the drum 3, where this mixture is introduced into the latter and undergoes a new phase of drying and heating.
  • the system 43 can for this purpose comprise a conveyor or a treadmill.
  • Such a return of the mixture at the outlet of drum 3 can be envisaged when the quality of the mixture and/or its temperature are insufficient for the binder to be incorporated, in order to avoid any unnecessary loss of binder and/or aggregates.
  • the drum 3 may not include a second introduction device 39, and the openings 41 be placed upstream of the mixing zone 35 and thus form a diversion channel making it possible to discharge all or part hot and dried aggregates out of the drum 3, for example to a conveyor not shown.
  • the first and the second devices 13 and 39 for introducing coated aggregates to be recycled can also be used to introduce, into the drum 3, fillers (“fines”) or additives, that is to say materials of complement of various kinds entering into the composition of the final asphalt.
  • the invention also relates to a process for manufacturing asphalt, preferably in an installation 1 for producing asphalt according to the invention.
  • the above description relating to the installation 1 therefore applies, mutatis mutandis, to the process according to the invention, and vice versa.
  • Said method includes a step consisting in controlling the injection device 21 of a cooling fluid in such a way that the flow of hot gas F1 has a temperature which is less than 700° C. in the first recycling zone 15.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Working-Up Tar And Pitch (AREA)
EP22191744.6A 2021-08-26 2022-08-23 Mischgutproduktionsanlage und verfahren zur herstellung von mischgut in einer solchen mischgutproduktionsanlage Active EP4141170B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2108925A FR3126432B1 (fr) 2021-08-26 2021-08-26 Installation de production d’enrobes et procede de fabrication d’enrobes dans une telle installation de production d’enrobes

Publications (3)

Publication Number Publication Date
EP4141170A1 true EP4141170A1 (de) 2023-03-01
EP4141170C0 EP4141170C0 (de) 2024-03-27
EP4141170B1 EP4141170B1 (de) 2024-03-27

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EP22191744.6A Active EP4141170B1 (de) 2021-08-26 2022-08-23 Mischgutproduktionsanlage und verfahren zur herstellung von mischgut in einer solchen mischgutproduktionsanlage

Country Status (4)

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US (1) US20230063289A1 (de)
EP (1) EP4141170B1 (de)
CA (1) CA3171021A1 (de)
FR (1) FR3126432B1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538325A1 (de) * 1985-10-28 1987-04-30 Linnhoff & Thesenfitz Masch Vorrichtung zum erwaermen und durchmischen von zur herstellung von strassenbelag verwendeten materialien
CN201488267U (zh) * 2009-09-03 2010-05-26 兰州泰得燃烧设备工程有限公司 一种热风炉
CN102518020A (zh) * 2011-12-20 2012-06-27 中联重科股份有限公司 沥青混合料热再生设备及燃烧装置
FR3051203A1 (fr) * 2016-05-10 2017-11-17 Ermont Installation et procede d'enrobage de granulats
EP3412829A1 (de) * 2017-06-09 2018-12-12 Ermont Anlage und verfahren zur asphaltherstellung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538325A1 (de) * 1985-10-28 1987-04-30 Linnhoff & Thesenfitz Masch Vorrichtung zum erwaermen und durchmischen von zur herstellung von strassenbelag verwendeten materialien
CN201488267U (zh) * 2009-09-03 2010-05-26 兰州泰得燃烧设备工程有限公司 一种热风炉
CN102518020A (zh) * 2011-12-20 2012-06-27 中联重科股份有限公司 沥青混合料热再生设备及燃烧装置
FR3051203A1 (fr) * 2016-05-10 2017-11-17 Ermont Installation et procede d'enrobage de granulats
EP3412829A1 (de) * 2017-06-09 2018-12-12 Ermont Anlage und verfahren zur asphaltherstellung

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Publication number Publication date
FR3126432A1 (fr) 2023-03-03
FR3126432B1 (fr) 2023-08-04
US20230063289A1 (en) 2023-03-02
EP4141170C0 (de) 2024-03-27
CA3171021A1 (en) 2023-02-26
EP4141170B1 (de) 2024-03-27

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