Production line for preparing asphalt modifier from waste plastics

Abstract

The invention relates to the field of waste plastic recycling, solves the problems of large occupied area and high economic cost caused by the arrangement of mutually independent production lines for raw materials with different physical properties in the prior art, and provides a production line for preparing an asphalt modifier from waste plastics, which comprises a first mixing area, a second mixing area and a mixing and crushing area, a material discharged from the first mixing area is made into a hard sheet; the material discharged from the second mixing area is made into an elastic sheet; the hard sheets and the elastic sheets are gathered in a mixing and crushing area, and primary crushed materials are obtained through crushing. The rear-end production lines of the two production lines are integrated, so that the layout area can be reduced, and the production cost is reduced; and the sizes of the crushed and discharged two types of waste materials are controlled to meet the feeding requirements of a grinding area, so that the invention also discloses a regulation and control method for crushing parameters of a mixed crushing area, and an optional crushing parameter range is obtained on the premise of meeting the ratio of a hard raw material to an elastic raw material in an asphalt modifier formula.

Description

Technical Field

[0001] The present invention relates to the field of waste plastic recycling, and in particular to a production line for producing an asphalt modifier from waste plastic. Background Art

[0002] Asphalt modifiers are additives used to improve the properties of asphalt. By adding modifiers, they can enhance the durability, rutting resistance, low-temperature crack resistance, and fatigue performance of asphalt mixtures. Common asphalt modifiers include polymer modifiers, resin modifiers, and modifiers derived from waste plastics. With growing environmental awareness, the use of waste plastics as raw materials to produce asphalt modifiers has become a research hotspot. This approach not only benefits the environment but also reduces production costs. However, the asphalt modification process often requires a combination of different modifiers to achieve optimal results. For example, polymer modifiers can enhance asphalt's ductility and elastic recovery, while resin modifiers can increase asphalt's softening point and viscosity to improve its high-temperature stability. The production of mixed modifiers often requires independent production lines due to the varying physical properties of the different raw materials, resulting in significant floor space requirements and high costs. Summary of the Invention

[0003] The purpose of the present invention is to provide a production line for making asphalt modifiers from waste plastics, so as to solve the problem in the prior art that independent production lines need to be arranged for raw materials with different physical properties, resulting in a large floor space and high economic costs.

[0004] The embodiments of the present invention are achieved through the following technical solutions:

[0005] A production line for producing asphalt modifiers from waste plastics, comprising:

[0006] a first mixing zone, wherein the first mixing zone is used for mixing hard waste plastics;

[0007] a second mixing zone, wherein the second mixing zone is used for mixing the elastic waste;

[0008] In the mixing and crushing zone, the discharge from the first mixing zone is made into a hard sheet; the discharge from the second mixing zone is made into an elastic sheet; the hard sheet and the elastic sheet are collected in the mixing and crushing zone and crushed to obtain primary crushed material.

[0009] Preferably, the production line further comprises: a grinding zone, wherein the primary crushed material is ground in the grinding zone to obtain an asphalt modifier.

[0010] Preferably, the method for controlling the crushing parameters in the mixed crushing zone includes:

[0011] S100, obtaining the relationship between the usage ratio of the hard sheet material and the elastic sheet material, the crushing parameters of the mixed crushing zone, and the discharge parameters of the mixed crushing zone through historical data;

[0012] S200. Obtain an optional crushing parameter range for the mixed crushing zone according to the ratio of the hard raw material to the elastic raw material in the asphalt modifier formula and the feed requirements of the grinding zone.

[0013] Preferably, the method for obtaining the discharge parameters of the mixing and crushing zone includes:

[0014] When the hard primary crushed material meets the feeding requirements of the grinding zone, the discharge parameter of the hard sheet is assigned a value of 1 or 0;

[0015] When the hard primary crushed material does not meet the feeding requirements of the grinding area, the discharge parameter of the hard sheet is assigned a value of 0 or 1;

[0016] When the elastic primary crushed material meets the feeding requirements of the grinding zone, the discharge parameter of the elastic sheet is assigned a value of 1 or 0;

[0017] When the elastic primary crushed material does not meet the feeding requirements of the grinding zone, the discharge parameter of the elastic sheet is assigned a value of 0 or 1;

[0018] The discharging parameter of the mixed crushing zone is equal to the product of the discharging parameter of the hard sheet material and the discharging parameter of the elastic sheet material.

[0019] Preferably, the crushing parameters include: one or more of rotation speed and time.

[0020] Preferably, when the crushing parameters are within the rated crushing parameter range of the mixed crushing zone, the dosage ratio of the hard sheet and the elastic sheet is regulated according to the ratio of the hard raw material and the elastic raw material in the asphalt modifier formula. When the discharge parameters of the mixed crushing zone do not meet the feed requirements of the grinding zone, the thickness ratio of the hard sheet and the elastic sheet is regulated.

[0021] Preferably, the method for regulating the thickness ratio of the hard sheet to the elastic sheet includes:

[0022] Control the usage ratio of hard sheet and elastic sheet to be consistent with the ratio of hard raw material and elastic raw material in the asphalt modifier formula;

[0023] D100, obtaining the relationship between the thickness ratio of hard sheet material to elastic sheet material, the crushing parameters of the mixed crushing zone, and the discharge parameters of the mixed crushing zone through historical data;

[0024] D200, according to the feeding requirements of the grinding area, obtain the optional thickness ratio range of hard sheet and elastic sheet.

[0025] Preferably, the first kneading zone is connected to the mixing and crushing zone via a first transport device; the second kneading zone is connected to the mixing and crushing zone via a second transport device;

[0026] The transport speed ratio of the first transport device and the second transport device is regulated according to the ratio of the hard raw material to the elastic raw material in the asphalt modifier formula.

[0027] Preferably, the transport speed ratio of the first transport device and the second transport device is obtained by the ratio m of the hard raw material to the elastic raw material and the thickness ratio n of the hard sheet material to the elastic sheet material.

[0028] Preferably, the production line further comprises:

[0029] a hard waste crushing zone and a first granulation zone connected in sequence, wherein the outlet of the hard waste granulation zone is connected to the inlet of the first mixing zone;

[0030] The elastic waste crushing zone and the second granulation zone are connected in sequence, and the outlet of the hard waste granulation zone is connected to the inlet of the first mixing zone.

[0031] The present invention has at least the following beneficial effects:

[0032] The present invention classifies the waste raw materials according to their physical properties, divides them into elastic waste and hard waste, and then crushes the two in the same mixed crushing area. However, due to the difference in physical properties between the two, there are differences in the output size under the same crushing parameters, and it is difficult to control the size of the two types of waste after crushing to meet the feeding requirements of the grinding area. Therefore, the present invention also conceives a method for regulating the crushing parameters of the mixed crushing area. On the premise of meeting the ratio of hard raw materials to elastic raw materials in the asphalt modifier formula, an optional crushing parameter range is obtained, so that the output of the two types of waste after crushing can meet the feeding requirements of the grinding area; since the present invention integrates the back-end production lines of the two production lines into one, the layout area can be reduced and the production cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a production diagram of asphalt modifier made from waste plastics. DETAILED DESCRIPTION

[0035] In order to make the purpose, method scheme and advantages of the embodiments of the present invention clearer, the method scheme in the embodiments of the present invention is clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Example 1: Figure 1 As shown, a production line for making asphalt modifier from waste plastics includes:

[0037] a first mixing zone, wherein the first mixing zone is used for mixing hard waste plastics;

[0038] a second mixing zone, wherein the second mixing zone is used for mixing the elastic waste;

[0039] In the mixing and crushing zone, the discharge from the first mixing zone is made into a hard sheet; the discharge from the second mixing zone is made into an elastic sheet; the hard sheet and the elastic sheet are collected in the mixing and crushing zone and crushed to obtain primary crushed material.

[0040] During the specific implementation process, when the asphalt modifier formula contains both elastic and hard substances, such as elastic resins and hard plastics, and the product is a prepared composite modifier, it is necessary to mix and package the materials according to the component ratio in the formula during the production process. In addition, in the process of making asphalt modifiers from waste materials, the difference in compatibility between the substances will affect the compatibility of the materials after mixing. At the same time, according to the requirements of the formula, the mixing process is usually not to mix all the raw materials together, but to mix the raw materials in groups, and then it is necessary to set up multiple mixing zones. The physical properties of the output from different mixing zones are also different. If they are crushed together after mixing, it is difficult to ensure that under the same crushing parameters, the materials with different physical properties are of a size that meets the feeding requirements of the grinding zone when they are discharged. Therefore, in the process layout process, it is necessary to separately arrange a crushing zone after each mixing zone, which is complex in process, occupies a large area, and has high economic costs.

[0041] Based on the above production situation, the applicant hopes to crush the output materials of each mixing zone together to reduce the process layout area, and thus improved the production line. In this embodiment, the first mixing zone is used for mixing hard waste plastics, which means that the output product is a hard material. The second mixing zone is used for mixing elastic waste, which means that the output product is an elastic material.

[0042] For example, since material properties are generally related to polymer chain length and functional group types, and compatibility during mixing is related to the degree of structural differences between the materials, the mixing groups can be basically mixed according to the principle of mixing hard waste materials together and elastic waste materials together. The first mixing zone is fed with a variety of hard plastic pellets, such as polyethylene and polypropylene. The second mixing zone is fed with a variety of elastic waste pellets, such as rubber and rosin resin.

[0043] Exemplarily, the material discharged from the mixing zone can be pressed into sheets through a rolling process. The elastic sheet and the hard sheet have the same length and width, and the thickness can be the same or different.

[0044] For example, after the material is discharged from the grinding mill, the product that does not meet the particle size requirements is screened out by screening and the material is returned to the grinding area for further grinding.

[0045] Example 2: In this example, the production line further comprises: a grinding zone, and the primary crushed material is ground in the grinding zone to obtain an asphalt modifier.

[0046] In the specific implementation process, the grinding area can reduce the physical property difference between elastic waste and hard waste through low temperature grinding technology. The elasticity of elastic waste can be reduced at low temperature, thereby reducing the elasticity difference between it and hard waste. The grinding effects of the two in the same grinding area are close, and then Figure 1 As shown in the figure, a grinding area can also be used after the mixing and crushing area to grind the mixed materials. Figure 1 As shown, the front-end process section consists of parallel production lines. The number of parallel production lines can be adjusted based on the asphalt modifier formulation. This example shows only two parallel production lines, but the number can be increased based on actual conditions. The mixing zone can be integrated into a single production line, and the mixing, crushing, and grinding zones can utilize intermittent feeding. Material transfer between the various processes can be achieved using conveyor belts.

[0047] The feeding parameter of the grinding zone can be that the feed particle size is not greater than 20mm.

[0048] Example 3: In order to ensure that the particle size of various types of materials meet the feeding parameters of the grinding zone when discharging after the mixed crushing zone performs mixed crushing of all materials, an improvement is made on the basis of Example 1. In this embodiment, the method for controlling the crushing parameters of the mixed crushing zone includes:

[0049] S100, obtaining the relationship between the usage ratio of the hard sheet material and the elastic sheet material, the crushing parameters of the mixed crushing zone, and the discharge parameters of the mixed crushing zone through historical data;

[0050] S200. Obtain an optional crushing parameter range for the mixed crushing zone according to the ratio of the hard raw material to the elastic raw material in the asphalt modifier formula and the feed requirements of the grinding zone.

[0051] In specific implementations, the length, width, and height of the hard and elastic sheets can be consistent. The ratio of the hard and elastic raw materials can determine the usage ratio of the hard and elastic sheets. The crushing parameters in the mixed crushing zone can include either rotational speed or time. The rotational speed primarily refers to the speed of the crushing rollers or cutting blades. The discharge parameter can be the average particle size of the discharge.

[0052] For example, assuming the specifications of the hard and elastic sheets are consistent, experiments were conducted to control the quantity or mass ratio of the hard and elastic sheets during a single feed, yielding particle sizes at different crushing speeds. Furthermore, a relationship curve (possibly a discontinuous curve) was generated based on experimental data from the dosage ratio, crushing parameters, and discharge parameters. In actual production, the formulation of asphalt modifiers may require continuous refinement. Based on the raw material ratios in the current asphalt modifier formulation, specifically the relationship between the hard and elastic sheets, the aforementioned curve can be used to identify crushing parameters that match the current mill feed parameters.

[0053] There may be multiple crushing parameters that meet the requirements. You can choose the crushing parameter with the largest value within the rated crushing parameter range to improve production efficiency. You can also choose the crushing parameter with the highest output particle size uniformity within the rated crushing parameter range to improve subsequent grinding results. Output particle size uniformity mainly refers to the difference in particle size between hard and elastic sheets after crushing.

[0054] Example 4: In order to simplify the data acquisition operation, an improvement is made on the basis of Example 3. In this example, the method for obtaining the discharge parameters of the mixed crushing zone includes:

[0055] When the hard primary crushed material meets the feeding requirements of the grinding zone, the discharge parameter of the hard sheet is assigned a value of 1 or 0;

[0056] When the hard primary crushed material does not meet the feeding requirements of the grinding area, the discharge parameter of the hard sheet is assigned a value of 0 or 1;

[0057] When the elastic primary crushed material meets the feeding requirements of the grinding zone, the discharge parameter of the elastic sheet is assigned a value of 1 or 0;

[0058] When the elastic primary crushed material does not meet the feeding requirements of the grinding zone, the discharge parameter of the elastic sheet is assigned a value of 0 or 1;

[0059] The discharging parameter of the mixed crushing zone is equal to the product of the discharging parameter of the hard sheet material and the discharging parameter of the elastic sheet material.

[0060] During specific implementation, after the elastic and hard sheets are crushed and discharged in the mixed crushing zone, their particle sizes must meet the feed requirements of the grinding zone. If the obtained discharge data were directly based on the particle sizes of the different types of sheet material after crushing, data processing would be difficult. This embodiment significantly reduces the difficulty of data processing by using a discharge parameter assignment method. Specifically, the discharge parameter assignments differ when the feed requirements of the grinding zone are met and when they are not met: one is 1 and the other is 0.

[0061] For example, if the material meets the feeding requirements of the grinding area, the discharge parameter is assigned a value of 1; if the material does not meet the feeding requirements of the grinding area, the discharge parameter is assigned a value of 0. For details, see the following:

[0062] When the particle sizes of the hard sheets and elastic sheets after crushing meet the feeding requirements of the grinding area, the discharge parameters of the hard sheets and elastic sheets are both 1, and the discharge parameters of the mixed crushing area are 1*1=1.

[0063] When the particle size of the hard sheet after crushing meets the feeding requirements of the grinding zone, and the particle size of the elastic sheet after crushing does not meet the feeding requirements of the grinding zone, the discharge parameter of the hard sheet is 1, and the discharge parameter of the elastic sheet is 0, then the discharge parameter of the mixed crushing zone is 1*0=0.

[0064] When the particle size of the crushed elastic sheet meets the feeding requirements of the grinding zone, while the particle size of the crushed hard sheet does not meet the feeding requirements of the grinding zone, the discharge parameter of the elastic sheet is 1, and the discharge parameter of the hard sheet is 0, then the discharge parameter of the mixed crushing zone is 1*0=0.

[0065] When the particle size of the hard sheet and the elastic sheet after crushing does not meet the feeding requirements of the grinding area, the discharge parameters of the hard sheet and the elastic sheet are both 0, and the discharge parameters of the mixed crushing area are 0*0=0.

[0066] As can be seen from the above, when the discharge parameter of the mixed crushing zone is 1, the discharge of different sheet materials in the mixed crushing zone meets the requirements of the grinding zone. When the discharge parameter of the mixed crushing zone is 0, the crushed discharge of at least one sheet material in the mixed crushing zone does not meet the requirements of the grinding zone.

[0067] When there are two or more composite particles in the formulation of asphalt modifier, the assignment method can greatly simplify the data processing process.

[0068] Example 5: In this example, the crushing parameters include: one or more of rotation speed and time.

[0069] During the specific implementation process, the crushing devices in the mixed crushing area can be roughly divided into two categories. One is that the sheet passes through one or more groups of horizontal crushing rollers at a time to achieve crushing. Each group has at least two crushing rollers set opposite to each other. Under this crushing method, the time it takes for the sheet to pass through the crushing roller group is basically affected by the rotational speed, and only the rotational speed can be selected as the crushing parameter. The other type is that the sheet is continuously crushed by the cutting blades in the crushing chamber. At this time, the rotational speed or time can be selected as the crushing parameter. In the process of obtaining test data, one of the parameters can be fixed and the other parameter can be controlled. For example, when the crushing time is constant, the rotational speed is controlled to obtain test data. Of course, under normal circumstances, the output particle size is proportional to the rotational speed and crushing time, and the product of the rotational speed and time can also be used as the crushing parameter.

[0070] Example 6: In order to improve the applicability of the production line, improvements were made on the basis of Example 3. In this example, when the crushing parameters are within the rated crushing parameter range of the mixed crushing zone, the ratio of hard sheets to elastic sheets is regulated according to the ratio of hard raw materials to elastic raw materials in the asphalt modifier formula. When the discharge parameters of the mixed crushing zone do not meet the feed requirements of the grinding zone, the thickness ratio of the hard sheet to the elastic sheet is regulated.

[0071] During the specific implementation process, the mixed crushing zone adopts the existing crushing device, which is generally set with the maximum crushing parameters that the device can withstand, such as the maximum rotation speed. In this embodiment, the rated crushing parameter range refers to the crushing parameters used being less than or equal to the maximum crushing parameters. When the specifications of the elastic sheet and the hard sheet are exactly the same, but the adjustment of the crushing parameters cannot always obtain the output of different sheets that meet the feeding requirements of the grinding zone, the output parameters of the two can be further adjusted by increasing the thickness difference between the hard sheet and the elastic sheet. The thickness of the hard sheet and the elastic sheet can be regulated by the rolling and sheeting process after mixing. The rolling and sheeting process after mixing is a prior art and will not be described in detail in this embodiment.

[0072] When the production line provided in this embodiment is used, even if the discharge requirements cannot be met by adjusting the crushing parameters, the discharge parameters can be adjusted by adjusting the thickness difference between different sheets.

[0073] For example, the grinding zone feed requirements are met when the particle size of the crushed product of the same sheet material meets the grinding zone feed requirements by at least 98%. To better distinguish materials when sampling and testing the discharge parameters of different sheet materials, masterbatches can be added during mixing to give different types of sheet materials different colors.

[0074] Example 7: In this example, the method for controlling the thickness ratio of the hard sheet to the elastic sheet includes:

[0075] Control the usage ratio of hard sheet and elastic sheet to be consistent with the ratio of hard raw material and elastic raw material in the asphalt modifier formula;

[0076] D100, obtaining the relationship between the thickness ratio of hard sheet material to elastic sheet material, the crushing parameters of the mixed crushing zone, and the discharge parameters of the mixed crushing zone through historical data;

[0077] D200, according to the feeding requirements of the grinding area, obtain the optional thickness ratio range of hard sheet and elastic sheet.

[0078] In practice, the ratio of hard and elastic sheets is determined once the asphalt modifier formula is finalized. Typically, mixing and crushing are performed by weight. Therefore, in actual production, the thickness ratio k of each sheet can be controlled by adjusting the density ratio a, the number ratio b, and the total weight ratio f of each sheet: k = f / (ab).

[0079] For example, the base number of the thickness can be selected as 1 mm. When the thickness ratio of the elastic sheet to the hard sheet is 1:1.2, the thickness of the elastic sheet is 1 mm and the thickness of the hard sheet is 1.2 mm.

[0080] For example, there are multiple thickness ratios to choose from. When selecting the optimal thickness ratio, the thickness ratio that produces the highest uniformity in the output particle size can be selected to improve subsequent grinding results. The uniformity of the output particle size primarily refers to the difference in particle size between the hard and elastic sheets after crushing.

[0081] Example 8: In order to better achieve process control, improvements were made on the basis of Examples 1-7. In this example, the first kneading zone is connected to the mixing and crushing zone via a first transport device; the second kneading zone is connected to the mixing and crushing zone via a second transport device;

[0082] The transport speed ratio of the first transport device and the second transport device is regulated according to the ratio of the hard raw material to the elastic raw material in the asphalt modifier formula.

[0083] In specific implementations, the conveying surfaces of the first and second conveyor devices can have the same width. To facilitate the parallel arrangement of the mixing zones, the transport distances between each mixing zone and the co-crushing zone can also be the same. When the hard and elastic sheets are laid out in the same manner on the conveyor devices, the weight ratio of the different sheets entering the co-crushing zone is related to the speed ratio of the two conveyor devices, the thickness ratio of the sheets, and the density ratio of the sheets. When the thickness ratio and density ratio of the sheets are constant, the weight ratio of the sheets entering the co-crushing zone is determined by the speed ratio of the conveyor devices.

[0084] In this embodiment, the transport speed ratio of the first transport device and the second transport device is obtained by the ratio m of the hard raw material to the elastic raw material and the thickness ratio n of the hard sheet material to the elastic sheet material.

[0085] In a specific implementation, m is the weight ratio. When the length and width of the rigid sheet and the elastic sheet are identical, and the first and second transport devices have the same structure and size, the speed ratio of the first and second transport devices is p = m / (an), where a is the density ratio of the rigid sheet to the elastic sheet.

[0086] Example 9: Figure 1 As shown, in this embodiment, the production line also includes:

[0087] a hard waste crushing zone and a first granulation zone connected in sequence, wherein the outlet of the hard waste granulation zone is connected to the inlet of the first mixing zone;

[0088] The elastic waste crushing zone and the second granulation zone are connected in sequence, and the outlet of the hard waste granulation zone is connected to the inlet of the first mixing zone.

[0089] During implementation, after recycling different types of waste plastics, they can be grouped and crushed by plastic type. After crushing, they are melt-granulated, ensuring that the output from the granulation zone meets the input requirements of the mixing zone. Because the mixing zone's raw materials are a variety of waste materials, multiple granulation zones can be set up before the first or second mixing zone to granulate different types of recycled plastics, depending on the actual formulation of the asphalt modifier.

[0090] In the actual production process, the finished products formed after plastic recycling and granulation can be directly purchased as raw materials, reducing the setting of waste crushing areas and granulation areas in the work area layout.

[0091] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A production line for producing asphalt modifiers using waste plastics, characterized in that: include: a first mixing zone, wherein the first mixing zone is used for mixing hard waste plastics; a second mixing zone, wherein the second mixing zone is used for mixing the elastic waste; In the mixing and crushing zone, the discharge from the first mixing zone is made into a hard sheet; the discharge from the second mixing zone is made into an elastic sheet; the hard sheet and the elastic sheet are collected in the mixing and crushing zone and crushed to obtain primary crushed material.

2. The production line according to claim 1, characterized in that: Also includes: The primary crushed material is ground in the grinding area to obtain an asphalt modifier.

3. The production line according to claim 1, characterized in that The method for regulating the crushing parameters in the mixed crushing zone includes: S100, obtaining the relationship between the usage ratio of the hard sheet material and the elastic sheet material, the crushing parameters of the mixed crushing zone, and the discharge parameters of the mixed crushing zone through historical data; S200. Obtain an optional crushing parameter range for the mixed crushing zone according to the ratio of the hard raw material to the elastic raw material in the asphalt modifier formula and the feed requirements of the grinding zone.

4. The production line according to claim 3, characterized in that: The method for obtaining the discharging parameters of the mixing and crushing zone includes: When the hard primary crushed material meets the feeding requirements of the grinding zone, the discharge parameter of the hard sheet is assigned a value of 1 or 0; When the hard primary crushed material does not meet the feeding requirements of the grinding area, the discharge parameter of the hard sheet is assigned a value of 0 or 1; When the elastic primary crushed material meets the feeding requirements of the grinding zone, the discharge parameter of the elastic sheet is assigned a value of 1 or 0; When the elastic primary crushed material does not meet the feeding requirements of the grinding zone, the discharge parameter of the elastic sheet is assigned a value of 0 or 1; The discharging parameter of the mixed crushing zone is equal to the product of the discharging parameter of the hard sheet material and the discharging parameter of the elastic sheet material.

5. The production line according to claim 3, characterized in that: The crushing parameters include: one or more of rotation speed and time.

6. The production line according to claim 3, characterized in that: When the crushing parameters are within the rated crushing parameter range of the mixed crushing zone, the dosage ratio of hard sheets and elastic sheets is adjusted according to the ratio of hard raw materials and elastic raw materials in the asphalt modifier formula. When the discharge parameters of the mixed crushing zone do not meet the feed requirements of the grinding zone, the thickness ratio of hard sheets and elastic sheets is adjusted.

7. The production line according to claim 6, characterized in that The method for controlling the thickness ratio of the hard sheet to the elastic sheet includes: Control the usage ratio of hard sheet and elastic sheet to be consistent with the ratio of hard raw material and elastic raw material in the asphalt modifier formula; D100, obtaining the relationship between the thickness ratio of hard sheet material to elastic sheet material, the crushing parameters of the mixed crushing zone, and the discharge parameters of the mixed crushing zone through historical data; D200, according to the feeding requirements of the grinding area, obtain the optional thickness ratio range of hard sheet and elastic sheet.

8. The production line according to any one of claims 1 to 7, characterized in that: The first kneading zone is connected to the mixing and crushing zone through a first transport device; the second kneading zone is connected to the mixing and crushing zone through a second transport device; The transport speed ratio of the first transport device and the second transport device is regulated according to the ratio of the hard raw material to the elastic raw material in the asphalt modifier formula.

9. The production line according to claim 8, characterized in that The transport speed ratio between the first transport device and the second transport device is obtained by the ratio m of the hard raw material to the elastic raw material and the thickness ratio n of the hard sheet material to the elastic sheet material.

10. The production line according to claim 8, characterized in that Also includes: a hard waste crushing zone and a first granulation zone connected in sequence, wherein the outlet of the hard waste granulation zone is connected to the inlet of the first mixing zone; The elastic waste crushing zone and the second granulation zone are connected in sequence, and the outlet of the hard waste granulation zone is connected to the inlet of the first mixing zone.

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