A system and method for the treatment and resource utilization of construction solid waste

Abstract

A system and method for treating and recycling construction solid waste, relating to the field of construction solid waste treatment technology, is disclosed. The invention includes a first feeding device that transports construction solid waste containing lightweight materials to a crushing device, which crushes the waste into aggregate particles suitable for preparing recycled billets. A second feeding device then transports the aggregate particles to a recycled billet preparation system. During this process, a material flow scanning and analysis device scans and analyzes the material flow to identify the proportion of lightweight materials in the aggregate particles. A mixing and slurry device receives the aggregate particles transported by the second feeding device and the slurry raw material transported by the slurry raw material supply device. After mixing and stirring, the mixture is sent to a recycled billet pressing device for the preparation of recycled billets. During this process, the control system determines whether reinforcing material needs to be added to the mixing and slurry device based on the proportion of lightweight materials in the aggregate particles identified by the material flow scanning and analysis device, and generates instructions to control the operation of the reinforcing material supply device.

Description

Technical Field

[0001] This invention relates to the field of construction solid waste treatment technology, and more specifically, to a system and method for construction solid waste treatment and resource utilization. Background Technology

[0002] Construction waste primarily consists of concrete-like materials. Therefore, the simplest and lowest-cost method for recycling construction waste is to crush it and then process it into simple recycled blanks such as low-strength blocks or panels using methods like cement solidification or polymer bonding. Existing technologies include some production equipment or systems that can crush and granulate construction waste on-site before using it to produce these simple recycled blanks. However, even if these simple recycled blanks have low strength requirements, they must still meet minimum mechanical performance indicators in practical applications. Therefore, before crushing, construction waste still needs to be sorted to remove lightweight materials such as plastics and insulation materials; otherwise, even if used to make low-strength blocks or panels, they may not meet the basic mechanical performance requirements. The main difficulty in this process is that many lightweight materials are bonded to basic building materials such as concrete through bonding and interlocking. The labor cost of separating and sorting such materials far exceeds the raw material savings brought about by recycling construction waste. Although adding reinforcing materials is an effective way to improve the mechanical strength of building materials, conventional low-strength blocks or boards do not require reinforcing materials. Adding a large proportion of reinforcing materials to recycled materials is not as economical as using conventional production processes, which also makes the recycling of construction waste uneconomical.

[0003] The problem this project aims to solve is how to utilize this adhesive and interlocking mixture at low cost to produce recycled blanks while ensuring that the recycled blanks meet basic mechanical properties. Summary of the Invention

[0004] The purpose of this application is to provide a system and method for the treatment and resource utilization of construction solid waste, so as to solve the technical problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] A system for treating and recycling construction solid waste includes a first feeding device, a crushing device, a second feeding device, a material flow scanning and analysis device, a recycled billet preparation system, and a control system.

[0007] The first feeding device transports construction solid waste containing lightweight materials to the crushing device;

[0008] The crushing equipment crushes construction solid waste containing lightweight materials into aggregate particles that can be used to prepare recycled billets.

[0009] The second feeding device conveys the aggregate particles to the recycled billet preparation system;

[0010] The material flow scanning and analysis equipment scans and analyzes the material flow conveyed on the second feeding equipment to identify the doping ratio of lightweight substances in the aggregate particles.

[0011] The recycled billet preparation system includes a mixing and slurry device, a recycled billet pressing device, a slurry raw material feeding device, and a reinforcing material feeding device. The slurry raw material feeding device can supply slurry raw materials to the mixing and slurry device. The mixing and slurry device receives aggregate particles conveyed by the second feeding device and slurry raw materials conveyed by the slurry raw material feeding device. After mixing and stirring the aggregate particles and slurry raw materials, the mixture is sent to the recycled billet pressing device for the preparation of recycled billets.

[0012] The reinforcing material feeding device can supply reinforcing material to the mixing and slurry device. The control system determines whether reinforcing material needs to be added to the mixing and slurry device based on the proportion of lightweight substances in the aggregate particles identified by the material flow scanning and analysis equipment, and generates instructions to control the operation of the reinforcing material feeding device.

[0013] As described above in the construction solid waste treatment and resource utilization system, the lightweight material includes plastics and / or thermal insulation materials.

[0014] As described above, in the construction solid waste treatment and resource utilization system, the crushing equipment uses a non-continuous feeding method to crush construction solid waste containing lightweight materials.

[0015] In the construction solid waste treatment and resource utilization system described above, the aggregate particles have a particle size of 5–20 mm.

[0016] As described above in the construction solid waste treatment and resource utilization system, the pulping raw material supplied by the pulping raw material supply device contains a binder.

[0017] As described above, the construction solid waste treatment and resource utilization system also includes blanking auxiliary materials in the pulping raw material supplied by the pulping raw material supply device.

[0018] As described above, in the construction solid waste treatment and resource utilization system, the mixing and slurry mixing device and the recycled billet pressing device are integrated equipment.

[0019] As described above, in the construction solid waste treatment and resource utilization system, the mixing and slurry mixing device and the recycled billet pressing device are separate units.

[0020] As described above in the construction solid waste treatment and resource utilization system, the reinforcing material supplied by the reinforcing material supply device includes fiber materials.

[0021] A method for treating and recycling construction solid waste, employing the construction solid waste treatment and recycling system described above, includes the following steps:

[0022] S1, the first feeding device transports construction solid waste containing light materials to the crushing equipment;

[0023] S2, the crushing equipment crushes construction solid waste containing lightweight materials into aggregate particles that can be used to prepare recycled billets;

[0024] S3, the second feeding device conveys the aggregate particles to the recycled billet preparation system. During this process, the material flow scanning and analysis device scans and analyzes the material flow conveyed on the second feeding device to identify the doping ratio of light substances in the aggregate particles.

[0025] S4, the mixing and slurry device receives aggregate particles conveyed by the second feeding device and slurry raw materials conveyed by the slurry raw material feeding device. After mixing and stirring the aggregate particles and slurry raw materials, the mixture is sent to the recycled billet pressing device for the preparation of recycled billets. During this process, the control system determines whether it is necessary to add reinforcing material to the mixing and slurry device based on the doping ratio of lightweight substances in the aggregate particles identified by the material flow scanning analysis device in step S3, and generates an instruction to control the operation of the reinforcing material feeding device.

[0026] Beneficial effects:

[0027] In the continuous process of crushing and manufacturing recycled billets from construction solid waste, the amount of lightweight materials such as plastics attached to or mixed with the construction solid waste is unstable and uncontrollable at different processing times. When the content exceeds the standard, the strength of the recycled billet will be lower than the minimum control standard. This invention adopts the method of non-continuous feeding + batch analysis + on-demand reinforcement to achieve the goal of maintaining stable mechanical properties of the produced recycled billet even when the lightweight inclusions in concrete construction solid waste are unstable.

[0028] After adopting the construction solid waste treatment and resource utilization system and method of the present invention, the influence on the mechanical properties of recycled billets can be predicted based on the proportion of lightweight substances in the crushed aggregate particles identified by the material flow scanning analysis equipment. When it is necessary to add reinforcing materials to the mixing and slurry device, the reinforcing material feeding device can be controlled in a timely manner to add reinforcing materials, ensuring that all batches of recycled billets meet the minimum strength standards. Furthermore, it is not necessary to use reinforcing materials in all circumstances, thereby controlling costs. It also reduces the amount of manual sorting and rejection work before the crushing and treatment of construction solid waste from the source, so that the resource utilization of construction solid waste can truly achieve economic benefits due to cost reduction. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the composition of the construction solid waste treatment and resource utilization system provided in an embodiment of the present invention.

[0031] Figure 2 for Figure 1 Schematic diagram of the composition of the recycled billet preparation system Figure 1 .

[0032] Figure 3 for Figure 1 Schematic diagram of the composition of the recycled billet preparation system Figure 2 .

[0033] The following are the labeling elements in the figure:

[0034] First feeding device 10, crushing device 20, second feeding device 30, material flow scanning and analysis device 40, recycled billet preparation system 50;

[0035] 51. Mixing and slurry mixing device; 52. Recycled billet pressing device; 53. Slurry raw material feeding device; 54. Reinforcing material feeding device; 55. First conveying pipeline; 56. Second conveying pipeline; 57. Power premixing bin. Detailed Implementation

[0036] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0037] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0039] Example 1

[0040] like Figure 1 As shown, a construction solid waste treatment and resource utilization system according to this embodiment includes a first feeding device 10, a crushing device 20, a second feeding device 30, a material flow scanning and analysis device 40, a recycled billet preparation system 50, and a control system.

[0041] The first feeding device 10 transports construction solid waste containing lightweight materials to the crushing device 20.

[0042] Based on the objectives stated above, the primary purpose of this application is to reduce the amount of manual labor required to sort and remove lightweight materials such as plastics and insulation materials from construction solid waste. Of course, lightweight materials here include not only the most common plastics and insulation materials, but also other lightweight materials that can significantly reduce the recycled strength of concrete materials, including but not limited to gypsum, wood and its derivatives.

[0043] It should be noted that the construction solid waste containing lightweight materials conveyed on the first feeding device 10 is not completely unsorted. Instead, those materials that are bonded to concrete materials by means of adhesion, interlocking, etc., and need to be mechanically dismantled are mainly sorted out. Lightweight materials that exist independently and can be easily picked out without much cost, especially large pieces of lightweight materials, still need to be sorted and removed manually.

[0044] See also Figure 1 The crushing equipment 20 receives construction solid waste containing lightweight materials from the first feeding equipment 10 and crushes the construction solid waste containing lightweight materials into aggregate particles that can be used to prepare recycled billets.

[0045] Construction solid waste is mainly composed of concrete materials. Therefore, the simplest and lowest-cost method for recycling construction solid waste is to crush it and then use methods such as cement solidification and polymer bonding to produce simple recycled blanks such as low-strength blocks or boards. This embodiment is based on this purpose. The construction solid waste is crushed and granulated on-site by the crushing equipment 20 and then used to produce simple recycled blanks in subsequent processes.

[0046] Therefore, the aggregate particles are then conveyed to the recycled billet preparation system 50 using the second feeding device 30.

[0047] It should be noted that although no other intermediate processing equipment is included in this embodiment, the aggregate particles obtained by crushing by the crushing equipment 20 can also be subjected to additional intermediate processing such as screening and magnetic separation as needed according to the needs of production. In addition, the crushing equipment 20 of the present invention adopts single-stage or multi-stage crushing.

[0048] See Figure 1 and Figure 2In order to realize the direct resource utilization of on-site crushed construction solid waste, the recycled billet preparation system 50 in this embodiment includes a mixing and slurry device 51, a recycled billet pressing device 52, and a slurry raw material supply device 53. The slurry raw material supply device 53 can supply slurry raw materials to the mixing and slurry device 51. The mixing and slurry device 51 receives aggregate particles conveyed by the second feeding device 30 and slurry raw materials conveyed by the slurry raw material supply device 53. After mixing and stirring the aggregate particles and slurry raw materials, they are sent to the recycled billet pressing device 52 for the preparation of recycled billets.

[0049] In this embodiment, the construction solid waste containing lightweight materials is crushed into aggregate particles with a particle size of about 5-20 mm by the crushing equipment 20. The aggregate particles are then mixed with the binder and other pulping raw materials supplied by the pulping raw material supply device 53 in the mixing and slurry mixing device 51. The mixed slurry is then transported to the recycled blank pressing device 52 for pressing and molding of the recycled blank.

[0050] In this embodiment, the binder supplied by the pulping raw material supply device 53 is a cement-based inorganic gel material (in special cases, it can also be an organic binder). The pulping raw material may also contain other necessary auxiliary materials for blank preparation, such as, but not limited to, interface improvers, water-reducing agents, and environmentally friendly functional materials.

[0051] In this embodiment, as shown in the figure, the mixing and slurry mixing device 51 and the recycled blank pressing device 52 are integrated into one unit. The advantage of this device is that it is compact and highly integrated. The slurry mixed by the mixing and slurry mixing device 51 can be automatically and quantitatively fed into the cavity of the recycled blank pressing device 52 below. The cavity of the recycled blank pressing device 52 has a pressing head and a pressing rod. The pressing head has a piston structure, which can press a quantitative amount of slurry into a recycled blank of a set size. At the same time, the end of the cavity has an openable material gate, which can release each recycled blank that has been pressed and formed.

[0052] In an embodiment different from the accompanying drawings, the mixing and slurry-mixing device 51 and the recycled billet pressing device 52 can also be separate units. The advantage of separate units is that commercially available mixing and slurry-mixing devices and recycled billet pressing devices can be selected and connected for production as needed.

[0053] Although low-strength blocks or panels made directly from concrete construction waste are not used in important load-bearing applications, even if such simple recycled blanks have low strength requirements, they should still meet minimum mechanical performance indicators in practical applications. When the content of lightweight materials in aggregate particles is too high, the minimum mechanical performance indicators that recycled blanks can meet will become even lower. Although adding reinforcing materials is an effective way to improve the mechanical strength of building materials, conventional low-strength block or panel production does not require reinforcing materials. Adding a large proportion of reinforcing materials to recycled materials is not as economical as using conventional production processes.

[0054] Therefore, please continue to see Figure 1 and Figure 2 As a key means to solve the above problems and achieve the purpose of the present invention, a material flow scanning and analysis device 40 is provided above the second feeding device 30 of the present invention. At the same time, a reinforcing material feeding device 54 is introduced into the recycled billet preparation system 50 of the present invention. The reinforcing material feeding device 54 can supply reinforcing material to the mixing and slurry device 51, but it is not supplied at all times. Instead, it is based on the technical information provided by the material flow scanning and analysis device 40.

[0055] Specifically, the material flow scanning and analysis device 40 scans and analyzes the material flow conveyed on the second feeding device 30 to identify the doping ratio of lightweight substances in the aggregate particles. The control system then determines whether reinforcing material needs to be added to the mixing and slurry device 51 based on the doping ratio of lightweight substances in the aggregate particles identified by the material flow scanning and analysis device 40, and generates an instruction to control the operation of the reinforcing material feeding device 54.

[0056] In this invention, the working mode of the crushing equipment 20 for crushing construction solid waste containing lightweight materials is first adjusted to a non-continuous feeding mode. The mixing and stamping production rhythm of the subsequent recycled billet preparation system 50 is also matched. Since the crushing equipment 20 adopts a non-continuous feeding mode for crushing construction solid waste containing lightweight materials, the material flow scanning analysis equipment 40 can analyze the doping ratio of lightweight materials in each round of loading by means of near-infrared spectral analysis combined with hyperspectral imaging and millimeter-wave radar detection technology. Once the doping ratio of lightweight materials in the previous round of loading exceeds the standard, the control system issues a working instruction to the reinforcing material feeding device 54 when the mixing and stamping device 51 is working, and adds reinforcing material, such as fiber material, to the mixing and stamping device 51. The amount of fiber material added can also be determined according to the doping ratio of lightweight materials in each round of loading provided by the material flow scanning analysis equipment 40 and controlled by controlling the feeding amount and / or feeding time of the reinforcing material feeding device 54. Beneficially, for fiber materials, the time when the aggregate particles and pulping raw materials are first fed into the mixing device 51 is controlled to be 80-100 seconds after they have started mixing. At this time, the aggregate particles have been effectively wetted and there is still some time before the pulp begins to set. This is an important measure to ensure that the amount of fiber used can be effectively reduced and the flexural strength of the recycled preform can be significantly improved.

[0057] The reinforcing material supply device 54 can also provide a variety of selectable reinforcing materials by setting up multiple chambers or tanks to meet different reinforcing needs or to perform composite reinforcement with multiple reinforcing materials. These multiple reinforcing materials can be different types of reinforcing materials, or they can be the same type but different materials, such as polypropylene fiber material and basalt fiber material. Figure 3As shown, the power premixing chamber 57 is used for premixing different reinforcing materials.

[0058] It should be noted that, in some cases, as a supplement to the reinforcing material feeding device 54, a portion of spare reinforcing material can also be fed in simultaneously through the pulping raw material feeding device 53.

[0059] Therefore, this invention uses a non-continuous feeding + batch analysis + on-demand reinforcement method to achieve the effect of effectively monitoring the quality of aggregate particles even when the solid waste is unstable and timely reinforcement when the strength of the recycled billet may face a significant decline. The material scanning time for each round is set to more than 3 seconds to ensure data accuracy.

[0060] Example 2

[0061] This embodiment is a method for the treatment and resource utilization of construction solid waste, employing the construction solid waste treatment and resource utilization system described in Embodiment 1, including the following steps:

[0062] S1, the first feeding device 10 transports construction solid waste containing light materials to the crushing device 20.

[0063] S2, the crushing equipment 20 crushes construction solid waste containing light materials into aggregate particles that can be used to prepare recycled billets through one or more stages of crushing.

[0064] S3, the second feeding device 30 conveys the aggregate particles to the recycled billet preparation system 50. During this process, the material flow scanning and analysis device 40 scans and analyzes the material flow conveyed on the second feeding device 30 to identify the doping ratio of lightweight substances in the aggregate particles.

[0065] In step S4, the mixing and slurry preparation device 51 receives aggregate particles from the second feeding device 30 and slurry raw materials from the slurry raw material supply device 53. After mixing and stirring the aggregate particles and slurry raw materials, the mixture is sent to the recycled billet pressing device 52 for the preparation of recycled billets. During this process, the control system determines whether reinforcing material needs to be added to the mixing and slurry preparation device 51 based on the doping ratio of lightweight materials in the aggregate particles identified by the material flow scanning analysis device 40 in step S3. The control system then generates an instruction to control the operation of the reinforcing material supply device 54. Once the doping ratio of lightweight materials in the previous round of loading exceeds the standard, the control system issues an instruction to the reinforcing material supply device 54 to add reinforcing material, such as fiber material, to the mixing and slurry preparation device 51. The amount of fiber material added can also be determined based on the doping ratio of lightweight materials in each round of loading provided by the material flow scanning analysis device 40 and controlled by controlling the feeding amount and / or feeding time of the reinforcing material supply device 54. If the reinforcing material feeding device 54 needs to be replenished during the process, a portion of spare reinforcing material can also be fed in simultaneously through the pulping raw material feeding device 53.

[0066] Preferably, but not restrictively, when the strength adjustment error increases due to significant differences in the composition of lightweight materials in construction solid waste, the control system can further obtain a dynamic adjustment coefficient K based on the proportion of the main components in the lightweight materials. This adjustment coefficient K is used to refine the quantitative relationship between the total doping ratio of lightweight materials and the proportion of reinforcing materials to be added. For example, when K = 1 + Σ(ωi × ki), where ωi is the mass proportion of component i in the lightweight material and ki is the strength influence factor of component i (experimentally calibrated), the relationship between the total doping mass percentage X1 of lightweight materials in aggregate particles and the percentage X2 of the reinforcing materials to be added to the total mass of aggregate can be expressed as X2 = K × (a × X1 + b), where a is the baseline reinforcement ratio coefficient required per unit of lightweight material, and b is the system error compensation amount. Both a and b can be calibrated experimentally and adjusted based on experience. Of course, the above error can also be optimized by simply classifying the construction solid waste to be crushed according to the type of lightweight material inclusions or by selectively removing specific components of lightweight material inclusions, which will not be elaborated further.

[0067] Example 3

[0068] Based on the previous embodiments, this embodiment processes and recycles a batch of concrete construction solid waste. The raw material for the slurry used in the manufacture of recycled billets is silicate cement. The reinforcing material is selected as 90% polypropylene fiber + 10% basalt fiber. The fiber is fed by gas conveying and pumped into the mixing device 51 through the second conveying pipeline 56 of the reinforcing material feeding device 54. The spare reinforcing material is nano-silica slurry, which is added to the raw material feeding device 53 through a quantitative conveying pump and mixed into the raw material. The raw material feeding device 53 is then conveyed to the mixing device 51 through the first conveying pipeline 55. The quantitative conveying pump is also controlled by the control system to control the timing and amount of material added.

[0069] In this embodiment, based on the results of the billet preparation experiment and mechanical property test, it is set that when the proportion of lightweight material doping identified by the material flow scanning analysis device 40 is less than 7.5%, no reinforcing material is added. When the proportion of lightweight material doping identified by the material flow scanning analysis device 40 is in the range of 7.5%-15%, reinforcing material (polypropylene + basalt fiber) equivalent to 0.4%-1.2% of the aggregate mass is added through the reinforcing material feeding device 54. When the proportion of lightweight material doping identified by the material flow scanning analysis device 40 is >15%, in addition to adding reinforcing material (polypropylene + basalt fiber) through the reinforcing material feeding device 54, nano-silica slurry equivalent to 2%-3% of the aggregate mass is additionally added to the pulping raw material feeding device 53 through a quantitative conveying pump. Adding nano-silica slurry to the pulping raw material feeding device 53 can enable the nano-silica to premix with cement to activate surface activity, resulting in a greater strength improvement than directly adding nano-silica slurry to the mixing device 51.

[0070] Therefore, this embodiment employs a combination of discontinuous feeding, batch analysis, and on-demand reinforcement to ensure stable mechanical properties of the produced recycled billets even under unstable conditions caused by lightweight inclusions in concrete construction waste. Without the on-demand reinforcement method of this embodiment, the compressive strength distribution of the prepared recycled billets would range from less than 3 MPa to as high as 10-13 MPa. However, with the on-demand reinforcement scheme of this embodiment, the compressive strength distribution of the prepared recycled billets can reach at least 7 MPa.

[0071] Compared with the on-demand reinforcement technology of this invention, although the method of full reinforcement can inevitably increase the maximum mechanical strength of the recycled billet, it does not significantly improve the minimum mechanical strength, so it has no effect on expanding or improving the application of the recycled billet, and it also greatly increases the production cost, which is far from achieving the purpose of cost control and efficiency improvement of this invention.

[0072] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A system for the treatment and resource utilization of construction solid waste, characterized in that, It includes a first feeding device (10), a crushing device (20), a second feeding device (30), a material flow scanning and analysis device (40), a recycled billet preparation system (50), and a control system; The first feeding device (10) transports construction solid waste containing light materials to the crushing device (20); The crushing equipment (20) crushes construction solid waste containing light materials into aggregate particles that can be used to prepare recycled billets; The second feeding device (30) conveys the aggregate particles to the recycled billet preparation system (50); The material flow scanning and analysis device (40) scans and analyzes the material flow conveyed on the second feeding device (30) to identify the doping ratio of lightweight substances in the aggregate particles; The recycled billet preparation system (50) includes a mixing and slurry device (51), a recycled billet pressing device (52), a pulping raw material feeding device (53), and a reinforcing material feeding device (54). The pulping raw material feeding device (53) can supply pulping raw materials to the mixing and slurry device (51). The mixing and slurry device (51) receives aggregate particles conveyed by the second feeding device (30) and pulping raw materials conveyed by the pulping raw material feeding device (53). After mixing and stirring the aggregate particles and pulping raw materials, the mixture is sent to the recycled billet pressing device (52) for the preparation of recycled billets. The reinforcing material feeding device (54) can supply reinforcing material to the mixing and slurry device (51). The control system determines whether reinforcing material needs to be added to the mixing and slurry device (51) based on the proportion of lightweight substances in the aggregate particles identified by the material flow scanning analysis device (40), and generates instructions to control the operation of the reinforcing material feeding device (54). The crushing equipment (20) uses a non-continuous feeding method to crush construction solid waste containing light materials. The material flow scanning analysis equipment (40) analyzes the doping ratio of light materials in each round of feeding. Once the doping ratio of light materials in the previous round of feeding exceeds the standard, the control system issues a working instruction to the reinforcing material feeding device (54) when the mixing and slurry device (51) is working, and adds reinforcing material to the mixing and slurry device (51). The amount added is determined according to the doping ratio of light materials in each round of feeding provided by the material flow scanning analysis equipment (40) and controlled by controlling the feeding amount and / or feeding time of the reinforcing material feeding device (54).

2. The construction solid waste treatment and resource utilization system as described in claim 1, characterized in that, The lightweight material includes plastics and / or thermal insulation materials.

3. The construction solid waste treatment and resource utilization system as described in claim 1, characterized in that, The aggregate particles have a particle size of 5–20 mm.

4. The construction solid waste treatment and resource utilization system as described in claim 1, characterized in that, The pulping raw material supplied by the pulping raw material feeding device (53) contains a binder.

5. The construction solid waste treatment and resource utilization system as described in claim 4, characterized in that, The pulping raw material supplied by the pulping raw material supply device (53) also includes blanking auxiliary materials.

6. The construction solid waste treatment and resource utilization system as described in claim 1, characterized in that, The mixing and slurry mixing device (51) and the recycled billet pressing device (52) are integrated into one unit.

7. The construction solid waste treatment and resource utilization system as described in claim 1, characterized in that, The mixing and slurry mixing device (51) and the recycled billet pressing device (52) are separate equipment.

8. The construction solid waste treatment and resource utilization system as described in claim 1, characterized in that, The reinforcing material supplied by the reinforcing material supply device (54) includes fiber material.

9. A method for treating and utilizing construction solid waste, employing the construction solid waste treatment and utilization system according to any one of claims 1-8, characterized in that, Including the following steps: S1, the first feeding device (10) transports construction solid waste containing light materials to the crushing device (20). S2, the crushing equipment (20) crushes construction solid waste containing light materials into aggregate particles that can be used to prepare recycled billets; S3, the second feeding device (30) transports the aggregate particles to the recycled billet preparation system (50). During this process, the material flow scanning analysis device (40) scans and analyzes the material flow transported on the second feeding device (30) to identify the doping ratio of light substances in the aggregate particles. S4, the mixing and slurry device (51) receives aggregate particles conveyed by the second feeding device (30) and slurry raw materials conveyed by the slurry raw material feeding device (53). After mixing and stirring the aggregate particles and slurry raw materials, it sends them to the recycled billet pressing device (52). The recycled billet pressing device (52) prepares the recycled billet. During this process, the control system determines whether it is necessary to add reinforcing material to the mixing and slurry device (51) based on the doping ratio of light substances in the aggregate particles identified by the material flow scanning analysis device (40) in step S3, and generates an instruction to control the operation of the reinforcing material feeding device (54).

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