CN114855553A - Hot plant mix recycling production process and production device for asphalt mixture - Google Patents
Hot plant mix recycling production process and production device for asphalt mixture Download PDFInfo
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- CN114855553A CN114855553A CN202210723845.8A CN202210723845A CN114855553A CN 114855553 A CN114855553 A CN 114855553A CN 202210723845 A CN202210723845 A CN 202210723845A CN 114855553 A CN114855553 A CN 114855553A
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- 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
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a hot mix plant recycling production process and a production device for asphalt mixture, wherein in the reconstruction and extension of a highway, the proportion of the material actually milled, milled and recycled is relatively small, and the requirement on the recycling proportion is not high. When the proportion of the regenerated material to the total amount of the mixture is not more than 25 percent, the cold material can be directly added into the asphalt mixing cylinder in a weighing mode without passing through a second drying cylinder, and the heat regeneration is realized through the heat exchange of the hot material. The regeneration mode can greatly save the equipment modification cost and simultaneously meet the requirement of the current project on regeneration. The method comprises the steps of putting asphalt mixture into a cold hopper, weighing different asphalt mixture specifications according to the design requirements of the mixture ratio by a weighing device, weighing recycled materials, conveying the weighed recycled materials into a metering device of an asphalt mixing plant by a conveying device, adding the weighed recycled materials into a stirring device together with dried hot aggregate, and stirring, wherein the hot aggregate is used for heating the recycled materials, so that the thermal regeneration of the asphalt mixture is realized.
Description
Technical Field
The invention relates to the technical field of asphalt waste regeneration, in particular to a hot mix plant recycling production process and a hot mix plant recycling production device for an asphalt mixture.
Background
The asphalt thermal regeneration has the characteristics of stable quality and long service life of the regenerated material, and meets the requirement of resource recycling.
When the asphalt mixture is recycled at present, generally, recycled materials are crushed and screened, then are heated in a hot drying cylinder after being weighed by a cold hopper belt scale, and the heated mixture is added into a stirring cylinder after being weighed by a weighing hopper, so that the regeneration of the asphalt mixture is realized.
The advantages of this approach are: the addition proportion of the reclaimed materials is high and can reach more than 60 percent of the mixed materials. The disadvantage is that the reclaimed material is easy to generate blue smoke after passing through the hot drying cylinder, which causes the asphalt aging. And the equipment investment is high.
Disclosure of Invention
The invention aims to solve the problems of the background technology and provides a hot mix plant recycling production process for asphalt mixtures.
The purpose of the invention can be realized by the following technical scheme:
a plant-mixing hot-recycling production process for asphalt mixtures comprises the following steps of putting the asphalt mixtures into a cold hopper, weighing different asphalt mixture specification materials by a weighing device according to the design requirements of the mixing ratio, weighing the reclaimed materials, conveying the weighed reclaimed materials into a metering device of an asphalt mixing plant by a conveying device, adding the weighed reclaimed materials and dried hot aggregates into a stirring device for stirring, and heating the reclaimed materials by the hot aggregates to realize the hot recycling of the asphalt mixtures.
As a further scheme of the invention: the reclaimed materials are reclaimed asphalt mixtures, wherein the reclaimed asphalt mixtures are weighed in cold hoppers according to different specifications.
As a further scheme of the invention: the asphalt mixture mineral aggregate mixing ratio is as follows: 13.8-14.1% of 10-20 mmRAP, 7.7-8.2% of 5-10 mmRAP, 2.8-3.1% of 0-5 mmRAP, 33.5-34.4% of 10-25 mm broken stone, 18.7-19.5% of 10-20 mm broken stone, 7.6-8.3% of 5-10 mm broken stone, 9.8-10.2% of machine-made sand and 3.8-4.2% of mineral powder.
As a further scheme of the invention: the regeneration proportion of the reclaimed materials is 1 to 25 percent.
The plant-mixing hot recycling production device for the asphalt mixture is characterized by comprising a cold hopper, a weighing device, a conveying device, an asphalt mixing plant, a metering device and a stirring device, wherein the weighing device is arranged at the bottom of the cold hopper, the metering device is installed on the asphalt mixing plant, and the stirring device is also arranged in the asphalt mixing plant;
the conveying device comprises a feeding belt conveyor and a lifting machine, the feeding belt conveyor is connected with the lifting machine, the feeding belt conveyor is arranged below the cold hopper, and the lifting machine stands beside the asphalt mixing plant.
The invention has the beneficial effects that:
in the conventional highway reconstruction and extension, the proportion of materials which are milled, milled and recovered is relatively small in practice, and the requirement on the regeneration proportion is not high. When the proportion of the regenerated material to the total amount of the mixture is not more than 25 percent, the cold material can be directly added into the asphalt mixing cylinder in a weighing mode without passing through a second drying cylinder, and the heat regeneration is realized through the heat exchange of the hot material. The regeneration mode can greatly save the equipment modification cost and simultaneously meet the requirement of the current project on regeneration.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the structure in the present invention.
In the figure: 1. a weighing device; 2. a cold hopper; 3. a feeding belt conveyor; 4. a hoist; 5. a metering device; 6. and (4) a stirring device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a hot plant recycling production process for asphalt mixture, which comprises the following steps of putting the asphalt mixture into a cold hopper 2, weighing different specifications of the asphalt mixture by a weighing device 1 according to the design requirements of the mixture ratio, weighing reclaimed materials, conveying the weighed reclaimed materials into a metering device 5 of an asphalt mixing plant by a conveying device, adding the weighed reclaimed materials and dried hot aggregate into a stirring device 6 for mixing, and heating the reclaimed materials by the hot aggregate to realize hot recycling of the asphalt mixture.
The reclaimed materials are reclaimed asphalt mixtures, and the reclaimed asphalt mixtures are weighed in the cold hopper 2 according to different specifications.
A hot recycling production device for asphalt mixture plant mixing comprises a cold hopper 2, a weighing device 1, a conveying device, an asphalt mixing plant, a metering device 5 and a stirring device 6, wherein the weighing device 1 is arranged at the bottom of the cold hopper 2, the metering device 5 is installed on the asphalt mixing plant, and the stirring device 6 is also arranged in the asphalt mixing plant;
conveyor includes material loading belt feeder 3 and lifting machine 4, material loading belt feeder 3 with lifting machine 4 is connected, material loading belt feeder 3 sets up in cold hopper 2 below, lifting machine 4 stands on pitch mix building is by one side.
Wherein, the weighing of the cold hopper 2 needs to install the weighing device 1 under the cold hopper 2 to realize the weighing of the reclaimed materials;
wherein the weighing device 1 is a weighing hopper;
wherein, the cold hopper 2 is used for weighing, and the weighing is accurate;
wherein, because the heating of the reclaimed materials depends on the dried aggregate for heating, the regeneration proportion is limited, and the regeneration proportion of the reclaimed materials is 1 to 25 percent;
wherein, the proportion of reclaimed materials regeneration is 25 percent.
The hot recycling function of the asphalt mixture can be realized by utilizing the additional cold material weighing and adding system, the structure is simple, the modification of an asphalt mixing plant is less, and the adaptability is better.
The plant mixing hot recycling production process of the asphalt mixture comprises the following steps of putting the asphalt mixture into a cold hopper 2, weighing different asphalt mixture specifications according to the design requirements of the mixing ratio by a weighing device 1, weighing reclaimed materials, conveying the weighed reclaimed materials into a metering device 5 of an asphalt mixing plant by a conveying device, adding the weighed reclaimed materials and dried hot aggregates into a stirring device 6 for mixing, and heating the reclaimed materials by the hot aggregates to realize hot recycling of the asphalt mixture.
The reclaimed materials are reclaimed asphalt mixtures, and the reclaimed asphalt mixtures are weighed in the cold hopper 2 according to different specifications.
Wherein, the regeneration proportion of the reclaimed materials is 25 percent.
The asphalt mixture mineral aggregate mixing ratio and the designed oilstone ratio are as follows: 14.0% of 10-20 mmRAP, 8.0% of 5-10 mmRAP, 3.0% of 0-5 mmRAP, 34.0% of 10-25 mm broken stone, 19.0% of 10-20 mm broken stone, 8.0% of 5-10 mm broken stone, 10.0% of machine-made sand, 4.0% of mineral powder, 3.05% of newly-added asphalt oil stone and 3.84% of total oil stone.
The plant mixing hot recycling production process of the asphalt mixture comprises the following steps of putting the asphalt mixture into a cold hopper 2, weighing different asphalt mixture specifications according to the design requirements of the mixing ratio by a weighing device 1, weighing reclaimed materials, conveying the weighed reclaimed materials into a metering device 5 of an asphalt mixing plant by a conveying device, adding the weighed reclaimed materials and dried hot aggregates into a stirring device 6 for mixing, and heating the reclaimed materials by the hot aggregates to realize hot recycling of the asphalt mixture.
The reclaimed materials are reclaimed asphalt mixtures, and the reclaimed asphalt mixtures are weighed in the cold hopper 2 according to different specifications.
Wherein, the regeneration proportion of the reclaimed materials is 25 percent.
The asphalt mixture mineral aggregate mixing ratio and the designed oilstone ratio are as follows: 13.8% of 10-20 mmRAP, 7.7% of 5-10 mmRAP, 2.8% of 0-5 mmRAP, 33.5% of 10-25 mm broken stone, 18.7% of 10-20 mm broken stone, 7.6% of 5-10 mm broken stone, 9.8% of machine-made sand, 3.8% of mineral powder, 3.0% of newly-added asphalt oil stone and 3.8% of total petroleum oil.
The plant mixing hot recycling production process of the asphalt mixture comprises the following steps of putting the asphalt mixture into a cold hopper 2, weighing different asphalt mixture specifications according to the design requirements of the mixing ratio by a weighing device 1, weighing reclaimed materials, conveying the weighed reclaimed materials into a metering device 5 of an asphalt mixing plant by a conveying device, adding the weighed reclaimed materials and dried hot aggregates into a stirring device 6 for mixing, and heating the reclaimed materials by the hot aggregates to realize hot recycling of the asphalt mixture.
The reclaimed materials are reclaimed asphalt mixtures, and the reclaimed asphalt mixtures are weighed in the cold hopper 2 according to different specifications.
Wherein, the regeneration proportion of the reclaimed materials is 25 percent.
The asphalt mixture mineral aggregate mixing ratio and the designed oilstone ratio are as follows: 14.1% of 10-20 mmRAP, 8.2% of 5-10 mmRAP, 3.1% of 0-5 mmRAP, 34.4% of 10-25 mm broken stone, 19.5% of 10-20 mm broken stone, 8.3% of 5-10 mm broken stone, 10.2% of machine-made sand, 4.2% of mineral powder, 3.1% of newly-added asphalt oil stone and 3.9% of total petroleum oil.
The plant mixing hot recycling production process of the asphalt mixture comprises the following steps of putting the asphalt mixture into a cold hopper 2, weighing different asphalt mixture specifications according to the design requirements of the mixing ratio by a weighing device 1, weighing reclaimed materials, conveying the weighed reclaimed materials into a metering device 5 of an asphalt mixing plant by a conveying device, adding the weighed reclaimed materials and dried hot aggregates into a stirring device 6 for mixing, and heating the reclaimed materials by the hot aggregates to realize hot recycling of the asphalt mixture.
The reclaimed materials are reclaimed asphalt mixtures, wherein the reclaimed asphalt mixtures are weighed in cold hoppers according to different specifications.
Wherein, the regeneration proportion of the reclaimed materials is 25 percent.
The asphalt mixture mineral aggregate mixing ratio and the designed oilstone ratio are as follows: 13.8% of 10-20 mmRAP, 7.8% of 5-10 mmRAP, 2.9% of 0-5 mmRAP, 33.6% of 10-25 mm broken stone, 18.7% of 10-20 mm broken stone, 7.6% of 5-10 mm broken stone, 9.8% of machine-made sand, 3.8% of mineral powder, 3.0% of newly-added asphalt oil stone and 3.8% of total petroleum oil.
In the conventional highway reconstruction and extension, the proportion of materials which are milled, milled and recovered is relatively small in practice, and the requirement on the regeneration proportion is not high. When the proportion of the reclaimed material to the total amount of the mixture is not more than 25 percent, the cold material can be directly added into the asphalt mixing tank in a weighing mode without passing through a second drying cylinder, and the heat reclamation is realized through the heat exchange of the hot material. The regeneration mode can greatly save the equipment modification cost and simultaneously meet the requirement of the current project on regeneration.
The aging of the asphalt mixture is mainly the aging of asphalt, and the asphalt is affected by factors such as light, heat, oxygen and the like continuously in the mixing, paving and later using processes to cause the aging of the asphalt, so that various pavement performances of the asphalt pavement are continuously lost.
Wherein, the production process of the asphalt mainly comprises a blending method.
Among them, the produced asphalt has differences in properties due to differences in crude oil production processes and differences in oil sources.
Among them, the aging of asphalt pavement is mainly the aging of asphalt, so that it is the loss of part of light components in asphalt, which makes it difficult for asphalt to form a stable colloid structure type.
Wherein, the colloid in the asphalt mainly ensures the low temperature ductility of the asphalt.
Wherein, the aromatic component mainly plays a role in dissolving the asphaltene.
Wherein, the regeneration of the aged asphalt can be completely based on the blending principle of asphalt production.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (5)
1. A plant-mixing hot recycling production process of asphalt mixtures is characterized by comprising the following steps of putting the asphalt mixtures into a cold hopper (2), weighing different asphalt mixtures by a weighing device (1) according to the design requirements of the mixing ratio, weighing reclaimed materials, conveying the weighed reclaimed materials into a metering device (5) of an asphalt mixing plant by a conveying device, adding the weighed reclaimed materials and dried hot aggregates into a stirring device (6) for mixing, and heating the reclaimed materials by using the hot aggregates to realize hot recycling of the asphalt mixtures.
2. The hot mix plant recycling production process of asphalt mixtures according to claim 1, characterized in that the recycled material is recycled asphalt mixtures, wherein the recycled asphalt mixtures are weighed in cold hoppers according to different specifications.
3. The plant-mixing hot recycling production process of the asphalt mixture according to claim 1, wherein the asphalt mixture comprises the following minerals in percentage by weight: 10-20 mmRAP13.8-14.1%, 5-10 mmRAP7.7-8.2%, 0-5 mmRAP2.8-3.1%, 10-25 mm broken stone 33.5-34.4%, 10-20 mm broken stone 18.7-19.5%, 5-10 mm broken stone 7.6-8.3%, machine-made sand 9.8-10.2%, and mineral powder 3.8-4.2%.
4. The hot mix plant recycling production process of asphalt mixtures according to any one of claims 1 to 3, characterized in that the recycled material recycling ratio is 1% to 25%.
5. The plant-mixing hot recycling production device for the asphalt mixture is characterized by comprising a cold hopper (2), a weighing device (1), a conveying device, an asphalt mixing plant, a metering device (5) and a stirring device (6), wherein the weighing device (1) is arranged at the bottom of the cold hopper (2), the metering device (5) is arranged on the asphalt mixing plant, and the stirring device (6) is also arranged in the asphalt mixing plant;
conveyor includes material loading belt feeder (3) and lifting machine (4), material loading belt feeder (3) with lifting machine (4) are connected, material loading belt feeder (3) set up in cold hopper (2) below, lifting machine (4) are set up pitch mix building is beside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210723845.8A CN114855553A (en) | 2022-06-23 | 2022-06-23 | Hot plant mix recycling production process and production device for asphalt mixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210723845.8A CN114855553A (en) | 2022-06-23 | 2022-06-23 | Hot plant mix recycling production process and production device for asphalt mixture |
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| CN114855553A true CN114855553A (en) | 2022-08-05 |
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| CN202210723845.8A Pending CN114855553A (en) | 2022-06-23 | 2022-06-23 | Hot plant mix recycling production process and production device for asphalt mixture |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002129514A (en) * | 2000-10-23 | 2002-05-09 | Nippon Hodo Co Ltd | Method and device for manufacturing recycled heated asphalt mixture |
| CN205152752U (en) * | 2015-09-29 | 2016-04-13 | 江苏华通动力重工有限公司（中外合资） | Bituminous mixture retrieves regenerating unit |
| CN205420966U (en) * | 2015-12-11 | 2016-08-03 | 襄城铭晟机械有限公司 | Cold hot regenerating unit of plantmix that adds |
| CN206015475U (en) * | 2016-08-31 | 2017-03-15 | 福建铁拓机械有限公司 | A kind of high additive hot in-plant reclaimed asphalt mixing plant |
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2022
- 2022-06-23 CN CN202210723845.8A patent/CN114855553A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002129514A (en) * | 2000-10-23 | 2002-05-09 | Nippon Hodo Co Ltd | Method and device for manufacturing recycled heated asphalt mixture |
| CN205152752U (en) * | 2015-09-29 | 2016-04-13 | 江苏华通动力重工有限公司（中外合资） | Bituminous mixture retrieves regenerating unit |
| CN205420966U (en) * | 2015-12-11 | 2016-08-03 | 襄城铭晟机械有限公司 | Cold hot regenerating unit of plantmix that adds |
| CN206015475U (en) * | 2016-08-31 | 2017-03-15 | 福建铁拓机械有限公司 | A kind of high additive hot in-plant reclaimed asphalt mixing plant |
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