A high performance cold patch asphalt mixture production system and process for using same

Abstract

The application discloses a high-performance cold patch asphalt mixture production system, which is characterized by comprising the following parts: an asphalt unloading tank, an asphalt tank, an asphalt metering device, a diluent tank, a diluent metering device, an additive tank, an additive metering device, a mixing reaction kettle, a cold patch liquid finished product tank, a cold patch liquid metering tank, a new aggregate discharging device, a new aggregate heating roller, a new aggregate weighing device, a new aggregate elevator, a RAP discharging device, a RAP heating roller, a RAP weighing device, a RAP elevator, a powder storage device, a powder metering device, a primary stirring device, a cooling system, a secondary stirring device and an automatic packaging line. The production system combines the advantages of hot-mixed asphalt mixture and cold patch asphalt mixture, and the produced high-performance cold patch asphalt mixture has the advantages of good workability, small diluent consumption, high early strength, strong water damage resistance, long durability and low production cost. The production method is simple to master, low-carbon and environment-friendly, and is suitable for the production of high-performance cold patch asphalt mixture of new materials and the production of high-performance cold patch asphalt mixture of old asphalt pavement milling materials.

Description

[0001] manual Technical Field

[0002] This invention belongs to the field of new road materials technology, and relates to a production system for high-performance cold-patch asphalt mixture that can be stored for a long time and its usage process. This production system is suitable for producing high-performance cold-patch asphalt mixture from new materials, as well as for producing high-performance cold-patch asphalt mixture from milled asphalt pavement. The specific production process is simple, controllable, low-carbon and environmentally friendly, low-cost, and has outstanding comprehensive performance of cold-patch asphalt mixture. Technical Background

[0003] In my country, high-grade highways are widely used, and asphalt pavement is the most common structural form. Compared with cement pavement, asphalt pavement has the advantages of shorter construction time, less noise, more comfortable driving, easier repair, and less dust. However, once asphalt pavement develops defects, it will reduce the pavement's usability and driving comfort, and in more serious cases, cause traffic accidents. Therefore, it is very important to repair pavement defects in a timely manner and open the road to traffic as soon as possible.

[0004] Hot-mix asphalt is suitable for large-scale projects in concentrated locations, and it offers good performance. However, it is inconvenient and uneconomical for maintaining and repairing smaller, more dispersed road surface defects. Especially in rainy, snowy, or low-temperature weather, hot-mix asphalt is unsuitable for road repair. Cold-mix asphalt, on the other hand, offers advantages such as less environmental pollution, easier construction, simpler operation, and the ability to be applied in low-temperature, rainy, or snowy conditions. Compared to hot-mix asphalt, it does not require heating, saving energy and making it more economical. Furthermore, cold-mix asphalt allows for rapid repairs and immediate reopening to traffic.

[0005] Currently, commonly used cold-mix asphalt mixtures are special road materials made by mixing coarse aggregates, fine aggregates, fillers, and cold-mixing liquid at room temperature or medium temperature (80-100℃). The cold-mixing liquid is made by fully mixing about 80% heavy traffic road petroleum asphalt, about 20% petroleum-based diluents, and a small amount of additives. Traditional cold-patch asphalt mixtures commonly suffer from problems such as low early strength, weak cohesion, poor water loss resistance, poor durability, and inadequate workability at low temperatures. The main reasons for this are: ① The large amount of diluent used in cold-patch asphalt, while providing good workability, significantly reduces the adhesion between asphalt materials. The strength, cohesion, and durability of the mixture can only be restored after the diluent has completely evaporated. ② The mixing of coarse and fine aggregates and mineral powder with cold-patch asphalt at room or medium temperatures results in excessively low temperatures. This causes the adhesion and bonding strength between the aggregates and asphalt to fall far short of the bonding effect of hot asphalt with aggregates at high temperatures. Consequently, the asphalt film easily detaches from the aggregate surface under the influence of water, resulting in poor water damage resistance of the cold-patch asphalt mixture. When the mixing temperature is raised to the high temperature required for hot asphalt and aggregate mixing in order to increase the bond between aggregate and cold-mix asphalt, a large amount of diluent will evaporate from the mixture due to the high temperature. This causes the cold-mix asphalt mixture to clump and harden, and its workability will disappear instantly. ③ When cold-mix asphalt is mixed with aggregate, the diluent in the cold-mix asphalt provides workability to the mixture, but a large amount is also absorbed by the aggregate pores and encased in the closed space of the asphalt film. On the one hand, this results in a large waste of diluent; on the other hand, the diluent cannot evaporate after being sealed by the asphalt film, so the strength of the cold-mix asphalt mixture can never reach the effect of the hot-mix asphalt mixture.

[0006] Meanwhile, as of 2022, my country's total highway mileage reached 4.8465 million kilometers, with over 90% being asphalt pavement. Under the influence of environmental factors and repeated vehicle loads, old asphalt pavements require regular maintenance, generating over 200 million tons of old pavement materials annually, valued at 120 billion yuan. A large amount of old asphalt pavement rough pavement (RAP) is discarded, causing environmental pollution and wasting high-quality asphalt resources. Furthermore, the large-scale mining of new aggregates leads to ecological disasters such as vegetation destruction and soil erosion. In contrast, the aggregates and asphalt in old asphalt pavement materials are mixed under high-temperature conditions, resulting in strong adhesion and good durability. If certain technological conditions are adopted to transform old asphalt pavement materials into cold-patch asphalt mixtures, it can not only significantly reduce the production cost of cold-patch asphalt mixtures and improve their overall road performance, but also solve the social problems caused by old asphalt pavements.

[0007] Based on the above background, it is necessary to develop a high-performance cold patch asphalt mixture production system and production method to solve the defects of current cold patch asphalt mixtures, such as low early strength, poor workability at low temperatures, weak resistance to water damage, poor durability, and high production cost. Summary of the Invention

[0008] To address the shortcomings of traditional cold-mix asphalt mixtures during production and to achieve the same effect as hot-mix asphalt mixtures in application, transforming temporary emergency pothole repairs into permanent repairs, this invention provides a cold-mix asphalt mixture production system and its application process. This system combines the advantages of both hot-mix and cold-mix asphalt mixture production, producing high-performance cold-mix asphalt mixtures with good workability, low diluent usage, high early strength, strong resistance to water damage, long durability, and low production costs. The production method is simple, readily mastered, and environmentally friendly, suitable for both high-performance cold-mix asphalt mixtures produced from virgin materials and those produced from milled old asphalt pavement.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A high-performance cold-mix asphalt mixture production system includes an asphalt unloading pool, an asphalt tank, an asphalt metering device, a diluent tank, a diluent metering device, an admixture tank, an admixture metering device, a mixing reactor, a cold-mix liquid finished product tank, a cold-mix liquid metering tank, a new aggregate feeding device, a new aggregate heating drum, a new aggregate weighing device, a new aggregate elevator, a RAP feeding device, a RAP heating drum, a RAP weighing device, a RAP elevator, a powder storage device, a powder metering device, a primary mixing device, a cooling system, a secondary mixing device, and an automatic packaging line.

[0011] The asphalt unloading pool is connected to the asphalt tank, the asphalt tank is connected to the asphalt metering device, and the asphalt metering device is connected to the inlet of the primary mixing device.

[0012] The diluent tank is connected to the diluent metering device, and the diluent metering device is connected to the inlet of the mixing reactor.

[0013] The additive tank is connected to the additive metering device, and the additive metering device is connected to the inlet of the mixing reactor.

[0014] The outlet of the mixing reactor is connected to the cold replenishment liquid finished product tank, the cold replenishment liquid finished product tank is connected to the cold replenishment liquid metering tank, and the cold replenishment liquid metering tank is connected to the inlet of the secondary stirring device;

[0015] The new aggregate feeding device is connected to the new aggregate heating drum, the new aggregate heating drum is connected to the new aggregate elevator, the new aggregate elevator is connected to the new aggregate weighing device, and the new aggregate weighing device is connected to the inlet of the primary mixing device.

[0016] The RAP feeding device is connected to the RAP elevator, the RAP elevator is connected to the RAP heating drum, the RAP heating drum is connected to the RAP weighing device, and the RAP weighing device is connected to the inlet of the primary mixing device.

[0017] The powder storage device is connected to the powder metering device, and the powder metering device is connected to the inlet of the primary mixing device;

[0018] The primary stirring device is connected to the inlet of the cooling system;

[0019] The cooling system is connected to the inlet of the secondary stirring device;

[0020] The outlet of the secondary mixing device is connected to an automatic packaging line.

[0021] Furthermore, it also includes a heat conduction system, which connects the asphalt unloading pool, asphalt tank, asphalt pump, asphalt metering device, mixing reactor, cold repair fluid finished product tank, cold repair fluid pump and cold repair fluid metering tank, thereby achieving the heat preservation effect of the asphalt unloading pool, asphalt tank, asphalt pump, asphalt metering device, mixing reactor, cold repair fluid finished product tank, cold repair fluid pump and cold repair fluid metering tank;

[0022] Furthermore, the heating range of the new aggregate heating and rolling is from room temperature to 220°C;

[0023] Furthermore, the heating range of the RAP heating roller is from room temperature to 160°C;

[0024] Furthermore, the primary mixing system is an intermittent forced mixer;

[0025] Furthermore, the cooling system is a mesh-chain type air-cooled temperature control system;

[0026] Furthermore, the secondary mixing system is an intermittent forced mixer;

[0027] Furthermore, the first asphalt conveying pump is a three-way loop conveying pump;

[0028] Furthermore, the diluent addition pump is a three-way circuit addition pump;

[0029] Furthermore, the additive addition pump is a three-way circuit addition pump.

[0030] This invention also provides a working process for a high-performance cold-mix asphalt mixture production system, comprising the following steps:

[0031] Step 1: The diluent is pumped from the diluent tank to the diluent metering device via the diluent addition pump, and then pumped to the mixing reactor by the diluent delivery pump;

[0032] Step 2: The additive is transported from the additive tank to the additive metering device by the additive addition pump, and then transported to the mixing reactor by the additive delivery pump.

[0033] Step 3: The diluent and additives are thoroughly mixed according to the preset mixing ratio. The resulting mixed liquid is transported to the cold replenishment liquid finished product tank, and then transported to the cold replenishment liquid metering tank by the cold replenishment liquid supply metering pump. After reaching the preset dosage required for cold replenishment material mixing, it is then transported to the secondary mixing device by the cold replenishment liquid supply spraying pump.

[0034] Step 4: Asphalt is transported from the asphalt unloading pool to the asphalt tank by the asphalt addition pump, then to the asphalt metering device by the first asphalt delivery pump, and finally to the first mixing device by the second asphalt delivery pump.

[0035] Step 5: The new aggregate in the new aggregate feeding device is conveyed to the new aggregate heating drum by the new aggregate elevator. After the new aggregate is heated to a specific temperature, it is weighed by the new aggregate weighing device and then conveyed to the first mixing device by the new aggregate conveyor.

[0036] Step 6: The RAP in the RAP feeding device is conveyed to the RAP heating drum by the RAP elevator. After the RAP is heated to a specific temperature, it is weighed by the RAP weighing device and then conveyed to the first mixing device by the RAP conveyor.

[0037] Step 7: The powder in the powder storage device is fed into the powder metering device for weighing via a screw conveyor, and then finally sent into the first mixing device.

[0038] Step 8: The new aggregate, RAP, powder and asphalt are added to the first mixing device according to the preset ratio and then mixed. After the mixture is fully mixed, the hot-mixed asphalt product enters the cooling system through the feed chute.

[0039] Step 9: After the hot-mixed material is cooled to the specified temperature by the cooling system, it is conveyed to the second mixing device by the conveyor. The cooled material is mixed with the cold patching liquid in the second mixer. After the mixture is fully mixed, high-performance asphalt cold patching material is obtained. The finished cold patching material enters the automatic packaging system through the guide chute for packaging.

[0040] Furthermore, the material mixing temperature of the first stirring device is 150-200℃;

[0041] Furthermore, the material mixing temperature of the second stirring device is 40-60℃.

[0042] Compared with existing technologies, the cold-mix asphalt mixture production system and its working method developed in this invention have the following advantages:

[0043] (1) This production system fully combines the advantages of hot-mix asphalt mixtures, where asphalt and aggregates are mixed under high temperature conditions, which can maximize the bonding force and adhesion work between asphalt and aggregates, and the advantages of cold patching liquid and aggregates being combined in a cold state, which can give the mixture the best workability. This makes the finished high-performance cold patching asphalt mixture take into account the advantages of workability, early strength, water damage resistance and durability.

[0044] (2) The automatic temperature control function of the cooling system can ensure the mixing process of hot-mix asphalt mixture and cold-mix asphalt liquid. On the one hand, it reduces the amount of diluent volatilization, and on the other hand, it makes the diluent only adhere to the surface of the mixture and not be absorbed by the aggregate pores. Without changing the workability of cold-mix asphalt mixture, it greatly reduces the amount of diluent used and saves production costs.

[0045] (3) Without reducing the workability of cold patch asphalt mixture, this production system can rapidly reduce the amount of diluent used, so that the diluent can be quickly volatilized from the mixture after compaction, and the road strength of the mixture can be formed quickly.

[0046] (4) This production system is suitable for producing high-performance cold-patch asphalt mixtures using new aggregates, asphalt, powder and cold patching liquid as raw materials, as well as using old asphalt pavement milling material, powder and cold patching liquid as raw materials. It is also suitable for producing high-performance cold-patch asphalt mixtures using any combination of new aggregates, old asphalt pavement milling material, asphalt, powder and cold patching liquid as raw materials. It is a multi-purpose machine. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of a high-performance cold-mix asphalt mixture production system according to the present invention. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] like Figure 1 As shown, a high-performance cold-mix asphalt mixture production system includes an asphalt unloading pool, an asphalt tank, an asphalt metering device, a diluent tank, a diluent metering device, an admixture tank, an admixture metering device, a mixing reactor, a cold-mix liquid finished product tank, a cold-mix liquid metering tank, a new aggregate feeding device, a new aggregate heating drum, a new aggregate weighing device, a new aggregate elevator, a RAP feeding device, a RAP heating drum, a RAP weighing device, a RAP elevator, a powder storage device, a powder metering device, a primary mixing device, a cooling system, a secondary mixing device, and an automatic packaging line.

[0051] The feature is that the asphalt unloading pool is connected to the asphalt tank, the asphalt tank is connected to the asphalt metering device, and the asphalt metering device is connected to the inlet of the primary mixing device.

[0052] The diluent tank is connected to the diluent metering device, and the diluent metering device is connected to the inlet of the mixing reactor.

[0053] The additive tank is connected to the additive metering device, and the additive metering device is connected to the inlet of the mixing reactor.

[0054] The outlet of the mixing reactor is connected to the cold replenishment liquid finished product tank, the cold replenishment liquid finished product tank is connected to the cold replenishment liquid metering tank, and the cold replenishment liquid metering tank is connected to the inlet of the secondary stirring device;

[0055] The new aggregate feeding device is connected to the new aggregate heating drum, the new aggregate heating drum is connected to the new aggregate elevator, the new aggregate elevator is connected to the new aggregate weighing device, and the new aggregate weighing device is connected to the inlet of the primary mixing device.

[0056] The RAP feeding device is connected to the RAP elevator, the RAP elevator is connected to the RAP heating drum, the RAP heating drum is connected to the RAP weighing device, and the RAP weighing device is connected to the inlet of the primary mixing device.

[0057] The powder storage device is connected to the powder metering device, and the powder metering device is connected to the inlet of the primary mixing device;

[0058] The primary stirring device is connected to the inlet of the cooling system;

[0059] The cooling system is connected to the inlet of the secondary stirring device;

[0060] The outlet of the secondary mixing device is connected to an automatic packaging line.

[0061] Specifically, by setting up diluent metering devices for raw material diluents, asphalt metering devices for asphalt, and metering devices for the cold patching fluid prepared from them, as well as metering devices for new aggregates, RAP and powder, accurate metering can be ensured. Furthermore, the asphalt content, cold patching fluid content, diluent content and additive content can be adjusted at any time according to different product requirements, resulting in better performance of the finished cold patching material.

[0062] Specifically, it also includes a heat conduction system, which connects the asphalt unloading pool, asphalt tank, asphalt pump, asphalt metering device, mixing reactor, cold repair fluid finished product tank, cold repair fluid pump and cold repair fluid metering tank, thereby achieving the heat preservation effect of the asphalt unloading pool, asphalt tank, asphalt pump, asphalt metering device, mixing reactor, cold repair fluid finished product tank, cold repair fluid pump and cold repair fluid metering tank;

[0063] Specifically, the heating range of the new aggregate heating and rolling is from room temperature to 220°C;

[0064] Specifically, the heating range of the RAP heating roller is from room temperature to 160°C;

[0065] Specifically, the primary mixing system is an intermittent forced mixer;

[0066] Specifically, the cooling system is a mesh-type air-cooled temperature control system;

[0067] Specifically, the secondary mixing system is an intermittent forced mixer;

[0068] Specifically, the first asphalt conveying pump is a three-way loop conveying pump;

[0069] Specifically, the diluent addition pump is a three-way loop addition pump;

[0070] Specifically, the additive addition pump is a three-way circuit addition pump.

[0071] This invention also provides a working process for a high-performance cold-mix asphalt mixture production system, comprising the following steps:

[0072] Step 1: The diluent is pumped from the diluent tank to the diluent metering device via the diluent addition pump, and then pumped to the mixing reactor by the diluent delivery pump;

[0073] Step 2: The additive is transported from the additive tank to the additive metering device by the additive addition pump, and then transported to the mixing reactor by the additive delivery pump.

[0074] Step 3: The diluent and additives are thoroughly mixed according to the preset mixing ratio. The resulting mixed liquid is transported to the cold replenishment liquid finished product tank, and then transported to the cold replenishment liquid metering tank by the cold replenishment liquid supply metering pump. After reaching the preset dosage required for cold replenishment material mixing, it is then transported to the secondary mixing device by the cold replenishment liquid supply spraying pump.

[0075] Step 4: Asphalt is transported from the asphalt unloading pool to the asphalt tank by the asphalt addition pump, then to the asphalt metering device by the first asphalt delivery pump, and finally to the first mixing device by the second asphalt delivery pump.

[0076] Step 5: The new aggregate in the new aggregate feeding device is conveyed to the new aggregate heating drum by the new aggregate elevator. After the new aggregate is heated to a specific temperature, it is weighed by the new aggregate weighing device and then conveyed to the first mixing device by the new aggregate conveyor.

[0077] Step 6: The RAP in the RAP feeding device is conveyed to the RAP heating drum by the RAP elevator. After the RAP is heated to a specific temperature, it is weighed by the RAP weighing device and then conveyed to the first mixing device by the RAP conveyor.

[0078] Step 7: The powder in the powder storage device is fed into the powder metering device for weighing via a screw conveyor, and then finally sent into the first mixing device.

[0079] Step 8: The new aggregate, RAP, powder and asphalt are added to the first mixing device according to the preset ratio and then mixed. After the mixture is fully mixed, the hot-mixed asphalt product enters the cooling system through the feed chute.

[0080] Step 9: After the hot-mixed material is cooled to the specified temperature by the cooling system, it is conveyed to the second mixing device by the conveyor. The cooled material is mixed with the cold patching liquid in the second mixer. After the mixture is fully mixed, high-performance asphalt cold patching material is obtained. The finished cold patching material enters the automatic packaging system through the guide chute for packaging.

[0081] Specifically, the material mixing temperature of the first stirring device is 150-200℃;

[0082] Specifically, the material mixing temperature of the second stirring device is 40-60℃.

[0083] Although this document frequently uses terms such as diluent, additive, mixing reactor, new aggregate feeding device, RAP feeding device, primary stirring device, cooling system, secondary stirring device, and automatic packaging line, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit it. Based on the above-described ideal embodiments of the present invention, and through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-performance cold-mix asphalt mixture production system, characterized in that: Includes asphalt unloading pool, asphalt tank, asphalt metering device, diluent tank, diluent metering device, admixture tank, admixture metering device, mixing reactor, cold repair fluid finished product tank, cold repair fluid metering tank, new aggregate feeding device, new aggregate heating drum, new aggregate weighing device, new aggregate elevator, RAP feeding device, RAP heating drum, RAP weighing device, RAP elevator, powder storage device, powder metering device, primary mixing device, cooling system, secondary mixing device, and automatic packaging line; The asphalt unloading pool is connected to the asphalt tank, the asphalt tank is connected to the asphalt metering device, and the asphalt metering device is connected to the inlet of the primary mixing device. The diluent tank is connected to the diluent metering device, and the diluent metering device is connected to the inlet of the mixing reactor. The admixture tank is connected to the admixture metering device, and the admixture metering device is connected to the inlet of the mixing reactor; The outlet of the mixing reactor is connected to the cold replenishment liquid finished product tank, the cold replenishment liquid finished product tank is connected to the cold replenishment liquid metering tank, and the cold replenishment liquid metering tank is connected to the inlet of the secondary stirring device; The new aggregate feeding device is connected to the new aggregate elevator, the new aggregate elevator is connected to the new aggregate heating drum, the new aggregate heating drum is connected to the new aggregate weighing device, and the new aggregate weighing device is connected to the inlet of the primary mixing device. The RAP feeding device is connected to the RAP elevator, the RAP elevator is connected to the RAP heating drum, the RAP heating drum is connected to the RAP weighing device, and the RAP weighing device is connected to the inlet of the primary mixing device. The powder storage device is connected to the powder metering device, and the powder metering device is connected to the inlet of the primary mixing device; The primary stirring device is connected to the inlet of the cooling system; The cooling system is connected to the inlet of the secondary stirring device; The outlet of the secondary mixing device is connected to an automatic packaging line; The process of using this high-performance cold-mix asphalt mixture production system includes the following steps: Step 1: The diluent is pumped from the diluent tank to the diluent metering device via the diluent addition pump, and then pumped to the mixing reactor by the diluent delivery pump; Step 2: The admixture is transported from the admixture tank to the admixture metering device by the admixture addition pump, and then transported to the mixing reactor by the admixture delivery pump; Step 3: The diluent and additives are thoroughly mixed according to the preset mixing ratio. The resulting mixed liquid is transported to the cold replenishment liquid finished product tank, and then transported to the cold replenishment liquid metering tank by the cold replenishment liquid supply metering pump. After reaching the preset dosage required for cold replenishment material mixing, it is then transported to the secondary mixing device by the cold replenishment liquid supply spraying pump. Step 4: Asphalt is transported from the asphalt unloading pool to the asphalt tank by the asphalt addition pump, then to the asphalt metering device by the first asphalt delivery pump, and finally to the first mixing device by the second asphalt delivery pump. Step 5: The new aggregate in the new aggregate feeding device is conveyed to the new aggregate heating drum by the new aggregate elevator. After the new aggregate is heated to a specific temperature, it is weighed by the new aggregate weighing device and then conveyed to the first mixing device by the new aggregate conveyor. Step 6: The RAP in the RAP feeding device is conveyed to the RAP heating drum by the RAP elevator. After the RAP is heated to a specific temperature, it is weighed by the RAP weighing device and then conveyed to the first mixing device by the RAP conveyor. Step 7: The powder in the powder storage device is fed into the powder metering device for weighing via a screw conveyor, and then finally sent into the first mixing device. Step 8: After the new aggregate, RAP, powder and asphalt are added to the first mixing device according to the preset ratio, they are mixed at a mixing temperature of 150℃-220℃. After the mixture is fully mixed, the hot-mixed finished material enters the cooling system through the guide chute. Step 9: After the hot-mixed material is cooled to the specified temperature by the cooling system, it is conveyed to the second mixing device by the conveyor. The cooled material is mixed with the cold patching liquid in the second mixer at a mixing temperature of 40℃-60℃. After thorough mixing, high-performance asphalt cold patching material is obtained. The finished cold patching material enters the automatic packaging system through the guide chute for packaging.

2. The high-performance cold-mix asphalt mixture production system according to claim 1, characterized in that: It also includes a heat conduction system, which connects the asphalt unloading pool, asphalt tank, asphalt pump, asphalt metering device, mixing reactor, cold repair fluid finished product tank, cold repair fluid pump and cold repair fluid metering tank.

3. The high-performance cold-mix asphalt mixture production system according to claim 1, characterized in that: The heating range of the new aggregate heating drum is from room temperature to 220°C.

4. The high-performance cold-mix asphalt mixture production system according to claim 1, characterized in that: The heating range of the RAP heating drum is from room temperature to 160°C.

5. The high-performance cold-mix asphalt mixture production system according to claim 1, characterized in that: The primary mixing device is an intermittent forced mixer.

6. The high-performance cold-mix asphalt mixture production system according to claim 1, characterized in that: The cooling system is a mesh-type air-cooled temperature control system.

7. The high-performance cold-mix asphalt mixture production system according to claim 1, characterized in that: The secondary mixing device is an intermittent forced mixer.

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