WO2012122659A1 - Method for operating an asphalt mixing plant, in particular a continuous asphalt mixing plant - Google Patents
Method for operating an asphalt mixing plant, in particular a continuous asphalt mixing plant Download PDFInfo
- Publication number
- WO2012122659A1 WO2012122659A1 PCT/CH2011/000052 CH2011000052W WO2012122659A1 WO 2012122659 A1 WO2012122659 A1 WO 2012122659A1 CH 2011000052 W CH2011000052 W CH 2011000052W WO 2012122659 A1 WO2012122659 A1 WO 2012122659A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hot
- mineral material
- drum dryer
- collected
- mixer
- Prior art date
Links
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
- E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
- E01C19/1063—Controlling the operations
-
- 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
- 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 method for operating an asphalt mixing plant and a plant, in particular for carrying out the method according to the preambles of the independent claims.
- the mineral material to be processed When producing asphalt in a continuous process, the mineral material to be processed must first be dried and heated before it is mixed with at least one other component, mostly bitumen, to form asphalt. This drying and heating is usually carried out in a drum dryer in which the mineral material is transported by a stream of hot gas generated therein, wherein it is repeatedly raised and guided in the form of a trickle curtain through the hot gas stream.
- a first aspect of the invention relates to a method for operating an asphalt mixing plant with a DC or countercurrent drum dryer for drying and heating the mineral material to be processed to hot mineral material and at least one mixer for mixing the hot mineral material with at least one further component, preferably with a binder, such as bitumen, to asphalt. It is also intended, for example
- Mi ⁇ neralmaterial is both "Neumineralmaterial” in question and asphalt granules / recycling asphalt or other recycled aggregates, or mixtures of such materials.
- the starting hot mineral material emerging from the drum dryer is collected until the emerging hot mineral material formulation is within a certain deviation from or equal to the supplied mineral material formulation.
- the hot mineral material emerging from the drum dryer is added in the at least one mixer with the at least one further component Asphalt mixed.
- This operating state represents the normal operation of the operating phase of the asphalt mixing plant.
- At least portions of the collected start-up hot-mineral material and the collected drain-hot-mineral material are mixed together in the at least one mixer with the at least one further component to form asphalt.
- This mode of operation now makes it possible, with continuous asphalt mixing plants, to significantly reduce or even eliminate the amount of scrap asphalt or scrap mineral material produced per operating phase, without having to compromise on the formulation's known state of the art trade-offs.
- this mode of operation now makes it possible to economically produce even small quantities of quality asphalt with very tight tolerances on continuous plants.
- the hot mineral material emerging from the drum dryer is mixed in normal operation continuously or batchwise in the at least one mixer with the at least one further component, in one or more Duchlauf- or batch mixers. , Subsequently, the entire collected start-up and run-off hot mineral material during and / or after the shutdown of the material flow through the drum dryer batchwise mixed in one or more batches in one or more batch mixers with the at least one other component to asphalt
- This mode of operation makes it possible, with continuous asphalt mixing plants, to produce quality asphalt with a tightly tolerated formulation in virtually any desired amount without producing scrap asphalt or scrap mineral material.
- the mixing of the collected start-up hot-mineral material and the collected run-off hot-mineral material with the at least one further component during and / or after the shutdown of the material flow by the drum dryer with the same mixer as the mixing of the Drum dryer emerging hot mineral material with the at least one other component in normal operation.
- the start-up hot-mineral material and the run-off hot-mineral material are collected in a common container.
- This is preferably designed as a silo with a square, preferably square cross-section, since this cross-sectional geometry favor mixing or merging of the superimposed tarnish hot mineral material and drain hot mineral material during removal, which is particularly advantageous or necessary if this Collected hot-mineral material is not processed all at once as a batch to asphalt.
- all other cross-sectional geometries and arrangements are also preferred which, upon removal, favor the merging or mixing of the start-up and drain hot-mineral materials.
- the entire amounts of the collected start-up hot-mineral material and the collected run-off hot-mineral material are mixed all at once in the mixer with the at least one further component. This makes it possible to obtain asphalt from the collected start-up and drain hot-mineral material. set, which has virtually no recipe shift compared to the asphalt produced in normal operation.
- the amount of mineral material fed to the drum dryer per unit time during the material flow through the drum dryer and the amount of hot mineral material emerging from the drum dryer per unit of time are preferably determined continuously.
- the emerging hot-mineral material is collected as start-up hot-mineral material until a certain ratio between the supplied quantity and the exiting amount is present or the quantities are identical.
- the quantity per unit time is preferably the mass flow determined. This makes it possible to keep deliberately within certain limits or virtually eliminate any recipe shifts at the beginning of normal operation in the event that the exiting hot mineral material is collected until the quantities are identical.
- a second aspect of the invention relates to an asphalt mixing plant, preferably for carrying out the process according to the first aspect of the invention.
- the plant comprises a drum dryer for drying and heating the mineral material to hot mineral material and at least one mixer for mixing the hot mineral material with at least one further component, in particular with a binder such. Bitumen, to asphalt.
- the system also includes a controller. With the controller, the system can be automated, in such a way
- At least partial amounts of the collected start-up hot-mineral material and the collected run-off Heissmineralmateri- are mixed together in the at least one mixer with the at least one further component to asphalt.
- the hot mineral material emerging from the drum dryer in normal operation can be mixed continuously or batchwise with the at least one further component in the at least one mixer and during and / or after the material flow has been shut down
- the entire collected start-up and drainage hot mineral material can be mixed batchwise in the at least one mixer with the at least one further component by means of the drum dryer.
- the plant is designed such that mixing of the collected start-up hot-mineral material and the collected run-off hot-mineral material with the at least one further component during and / or after the shutdown of the material flow through the drum dryer with the same mixer such as the mixing of the hot mineral material emerging from the drum dryer in normal operation with the at least one further component.
- the plant is designed such that the start-up hot-mineral material and the drainage-hot mineral material can be collected in a common container, in particular in a silo with a square, preferably square cross-section, since this cross-sectional geometry promote mixing or merging of the superimposed tarnish hot mineral material and drain hot mineral material during removal from the silo. This is particularly advantageous if the collected hot mineral material is not processed to asphalt in one go.
- all other cross-sectional geometries and arrangements are also preferred which, upon removal, favor the merging or mixing of the start-up and drain hot-mineral materials. It is also provided, each a container for collecting the tarnish hot mineral material and the
- the plant is designed such that the collected start-up hot-mineral material and the collected Run-off hot-mineral material can be mixed batchwise in a mixer with the at least one further component.
- this mixer and the drum ⁇ drier of the system are dimensioned such that the mixer at one time receive a quantity of hot mineral material and with at least one other component, in particular with a binder such as bitumen, mix, which twice the amount in normal operation at rated capacity in the Drum dryer located corresponding amount of mineral material.
- the system has means for particularly continuously determining the amount of mineral material fed to the drum dryer per unit time during startup of the material flow and the amount of start-up hot-mineral material emerging from the drum dryer per unit time.
- the respective mass flows are preferably determined as the amount per unit of time.
- the system is designed such that it can be automated with the controller such that the hot mineral material emerging from the drum dryer is collected as start-up hot mineral material until a certain ratio between the supplied quantity and the exiting amount is present or the quantities are identical, and then that the exiting hot mineral material is processed in normal operation to asphalt.
- This makes it possible to selectively keep or virtually eliminate any shift in formulation at the beginning of normal operation in the event that the exiting hot mineral material is collected until the incoming and outgoing quantities per time unit or mass flows are identical.
- FIG. 1 shows the system diagram of an asphalt mixing plant according to the invention.
- the asphalt mixing plant according to the invention shown in FIG. 1 comprises a predosing station A with a predoseur 4, a collecting belt 5, a delivery belt 6 and an oversize separator 13, a drying plant B with a gas-fired countercurrent drum dryer 1 and a drum introduction belt 7, a mixing plant C with a hot elevator 8, a mixer 2, a Batcher 9 and a heated buffer silo 3 and an asphalt silo D with underbuild asphalt silos 10 and a bucket eleventh
- the mixer 2 is designed as a two-shaft compulsory mixer and can be used both in continuous operation, i. continuously, as well as in batch mode, i. discontinuously, to be driven. It has a feed 12 for binders, especially bitumen.
- the pre-metering station A serves to provide a desired mass flow of mineral material having a desired recipe, which is supplied to the tumble dryer 1 via the drum infeed belt 7.
- the supplied mineral material is passed in countercurrent to a hot gas stream and thereby heated and dried. It leaves the dryer 1 as a hot mineral material and is then fed via the hot elevator 8 to the mixer 2 in normal operation, where it is mixed with supplied via the feed 12 binder to asphalt.
- the finished mixed asphalt then exits the mixer 2 and falls into the Batcher 9 where it is collected and batched into the vehicle. bucket 11 is discharged, which then filled the individual asphalt silos 10 with the asphalt. In the asphalt ⁇ silos 10 of the finished asphalt is kept ready for delivery to the consumer.
- the plant includes a plant control (not shown) with which the plant can be automated as described below:
- the finished asphalt falls after exiting the mixer 2 in the Batcher 9, where it is collected and discharged batchwise into the bucket 11, which then filled the individual asphalt silos 10 with the asphalt.
- the effluent hot mineral material leaving the drum dryer 1 is supplied via the hot elevator 8 to the buffer silo 3, in which start-up hot mineral material already arrives when the material flows through the drum dryer 1 was collected. As soon as no more hot mineral material from the
- Drum Dryer 1 exits, the entire collected in the silo 3 start-up and drain hot mineral material is conveyed through the hot elevator 8 in the mixer 2, which mixes this now in batch mode with binder, which in turn is fed via the feed 12 to asphalt.
- the batch-mixed asphalt is then also fed to the batcher 9, where it is collected and discharged batchwise into the bucket 11, which then feeds it to one or more of the asphalt silos 10.
- the buffer silo 3 is such as remplibil ⁇ det that when removing a subset of it collected amount of hot mineral material, the withdrawn subset consists of both start-up hot mineral material and outflow hot-mineral material.
- the silo 3 for example, a square cross-section, which favors the collection or mixing of the start-up and the run-Heissmineralmateri- when removing.
- the asphalt which has been mixed as a batch from the respective subset, is then fed to the batcher 9, where it is collected and discharged batchwise into the bucket 11, which then feeds it to one or more of the asphalt silos 10.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011362562A AU2011362562B2 (en) | 2011-03-15 | 2011-03-15 | Method for operating an asphalt mixing plant, in particular a continuous asphalt mixing plant |
BR112013023235A BR112013023235A2 (en) | 2011-03-15 | 2011-03-15 | method for operating an asphalt mixing plant, especially continuous operation |
ES11710405.9T ES2551409T3 (en) | 2011-03-15 | 2011-03-15 | Operating procedure of a particularly continuous asphalt mixing plant |
PCT/CH2011/000052 WO2012122659A1 (en) | 2011-03-15 | 2011-03-15 | Method for operating an asphalt mixing plant, in particular a continuous asphalt mixing plant |
EP11710405.9A EP2686485B1 (en) | 2011-03-15 | 2011-03-15 | Method for operating an in particular continuous asphalt mixing plant and asphalt mixing plant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2011/000052 WO2012122659A1 (en) | 2011-03-15 | 2011-03-15 | Method for operating an asphalt mixing plant, in particular a continuous asphalt mixing plant |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012122659A1 true WO2012122659A1 (en) | 2012-09-20 |
Family
ID=44625532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2011/000052 WO2012122659A1 (en) | 2011-03-15 | 2011-03-15 | Method for operating an asphalt mixing plant, in particular a continuous asphalt mixing plant |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2686485B1 (en) |
AU (1) | AU2011362562B2 (en) |
BR (1) | BR112013023235A2 (en) |
ES (1) | ES2551409T3 (en) |
WO (1) | WO2012122659A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3543401A1 (en) * | 2018-03-24 | 2019-09-25 | Fujian Tietuo Machinery Co., Ltd. | Continuous asphalt mixture production plant |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1140355B (en) * | 1959-04-25 | 1962-11-29 | Wibau Gmbh | Monitoring device for maintaining a predetermined mixing ratio of the dry component of a mixture by weight, especially for road construction |
DE1594725A1 (en) * | 1967-11-30 | 1970-10-01 | Ammann U Maschf Ag | Method and device for the production of bituminous mix |
DE29700709U1 (en) * | 1996-12-19 | 1998-04-23 | Teerbau GmbH, 45257 Essen | Asphalt mixing plant |
-
2011
- 2011-03-15 WO PCT/CH2011/000052 patent/WO2012122659A1/en active Application Filing
- 2011-03-15 ES ES11710405.9T patent/ES2551409T3/en active Active
- 2011-03-15 EP EP11710405.9A patent/EP2686485B1/en active Active
- 2011-03-15 AU AU2011362562A patent/AU2011362562B2/en active Active
- 2011-03-15 BR BR112013023235A patent/BR112013023235A2/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1140355B (en) * | 1959-04-25 | 1962-11-29 | Wibau Gmbh | Monitoring device for maintaining a predetermined mixing ratio of the dry component of a mixture by weight, especially for road construction |
DE1594725A1 (en) * | 1967-11-30 | 1970-10-01 | Ammann U Maschf Ag | Method and device for the production of bituminous mix |
DE29700709U1 (en) * | 1996-12-19 | 1998-04-23 | Teerbau GmbH, 45257 Essen | Asphalt mixing plant |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3543401A1 (en) * | 2018-03-24 | 2019-09-25 | Fujian Tietuo Machinery Co., Ltd. | Continuous asphalt mixture production plant |
US11459710B2 (en) | 2018-03-24 | 2022-10-04 | Fujian Tietuo Machinery Co., Ltd. | Continuous asphalt mixture production plant based on double-horizontal-shaft forced mixing |
Also Published As
Publication number | Publication date |
---|---|
AU2011362562B2 (en) | 2016-08-25 |
EP2686485B1 (en) | 2015-09-23 |
AU2011362562A1 (en) | 2013-09-19 |
ES2551409T3 (en) | 2015-11-18 |
EP2686485A1 (en) | 2014-01-22 |
BR112013023235A2 (en) | 2016-12-20 |
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