Construction waste treatment system and method based on cement kiln co-treatment

Abstract

The invention discloses a construction waste treatment system and method based on cement kiln co-processing, the system comprises a construction waste treatment system, a light substance crushing system, an alternative fuel conveying treatment system, a raw material conveying system and a cement production system, and the system is provided with two construction waste feed ports, so that decoration waste can be treated, and the construction waste can be recycled. The garbage can be demounted, and the adaptability is wide; according to the construction waste treatment system, the construction waste is thoroughly treated by fully utilizing the characteristics of cement production, no waste is discharged, the construction waste is treated into aggregate, powder and light substances through the construction waste treatment system and the light substance crushing system, and the generated aggregate and powder can be used as raw materials for cement production; produced light substances are used as alternative fuel for cement production, so that the resource recycling rate is greatly increased, and the cement production cost is reduced; and meanwhile, the system can reduce the consumption of fossil fuel and obviously reduce carbon emission.

Description

Technical Field

[0001] The present application relates to the technical field of comprehensive utilization of solid waste resources, and specifically to a construction waste treatment system and method based on cement kiln coordinated disposal. Background Art

[0002] With the acceleration of urbanization, the vigorous development of the construction industry has also brought about a large amount of construction waste. At present, my country has formed a diversified technical system including crushing and sorting, recycled aggregate preparation, recycled concrete production, and road paving material application.

[0003] However, the existing construction waste treatment system only recycles aggregates in construction waste, with a low resource recycling rate. Many powders and light materials are not fully recycled. At the same time, the existing construction waste treatment system is not highly mechanized, resulting in high project operating costs. Therefore, we propose a construction waste treatment system based on cement kiln coordinated disposal to solve the above problems. Summary of the invention

[0004] The purpose of the present application is to provide a construction waste treatment system and method based on cement kiln coordinated disposal, so as to solve the problems proposed in the above background technology that the existing construction waste treatment system only recycles aggregates in construction waste, has a low resource recycling rate, and many powders and light materials are not fully recycled.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] In the first aspect, the present application provides a construction waste treatment system based on cement kiln coordinated disposal, including a construction waste treatment system, a light material crushing system, an alternative fuel transportation and processing system, a raw material transportation system and a cement production system, wherein the construction waste treatment system includes a first loader, a plate feeder, a first belt conveyor, a first manual sorting table, a bag breaking and shaping machine, a first iron remover, a second belt conveyor, a bouncing screen, a third belt conveyor, a fourth belt conveyor, a second manual sorting table, a second loader, a vibrating feeder, a jaw crusher, a fifth belt conveyor, a third manual sorting table, a sixth belt conveyor, a second iron remover, an impact crusher, a seventh belt conveyor, a third iron remover, a vibrating screen, an eighth belt conveyor, a ninth belt conveyor, a first air separator, a tenth belt conveyor, a second air separator and an eleventh belt conveyor, wherein the first loader, the plate feeder, the first belt conveyor, the first manual sorting table, the bag breaking and shaping machine, the second belt conveyor and the bouncing screen are The discharge ports are connected end to end in sequence, the first iron remover is installed on the second belt conveyor, the 2D combustibles screened by the spring screen enter the light material crushing system through the third belt conveyor, the 3D materials screened by the spring screen are sorted by the second manual sorting table and then enter the impact crusher along the sixth belt conveyor, the sixth belt conveyor is equipped with a second iron remover, the second loader, the vibrating feeder, the jaw crusher, the fifth belt conveyor, the third manual sorting table, the sixth belt conveyor, the The inlet and outlet ports of the second iron remover, the impact crusher, the seventh belt conveyor and the vibrating screen are connected end to end in sequence. The powder and aggregate screened by the vibrating screen are sent to the first air separator and the second air separator by the eighth belt conveyor and the ninth belt conveyor respectively. The light materials and 2D combustibles screened by the first and second air separators are collected on the third belt conveyor. The remaining materials screened by the first and second air separators are sent to the raw material transportation system through the tenth belt conveyor and the eleventh belt conveyor respectively.

[0007] In one implementation of the first aspect, the 3D objects screened out by the bouncing screen are wood, stone, and PVC pipes. The 2D combustibles screened out by the bouncing screen are combustibles such as plastic, paper, and woven fabrics.

[0008] In one implementation of the first aspect, the diameter of the powder screened out by the vibration screen is 0-10 mm, and the diameter of the aggregate screened out by the vibration screen is greater than 10 mm.

[0009] In an implementation manner of the first aspect, the material conveying system includes a twelfth belt conveyor and an electronic belt scale, and the electronic belt scale is installed on the twelfth belt conveyor.

[0010] In one embodiment of the first aspect, the light material crushing system includes a plate conveyor, a primary crusher, a thirteenth belt conveyor, a fourth iron remover, a star disk screen, a fourteenth belt conveyor, a third air separator, a fifteenth belt conveyor, a secondary crusher and a sixteenth belt conveyor, wherein the inlets and outlets of the plate conveyor, the primary crusher, the thirteenth belt conveyor, the star disk screen, the fourteenth belt conveyor, the third air separator, the fifteenth belt conveyor, the secondary crusher and the sixteenth belt conveyor are connected end to end in sequence, the fourth iron remover is installed on the thirteenth belt conveyor, and the outlet of the sixteenth belt conveyor is connected to the feed port of the alternative fuel transportation and processing system.

[0011] In one implementation of the first aspect, the primary crusher is a double-shaft crusher; and the secondary crusher is a single-shaft crusher.

[0012] In one embodiment of the first aspect, the alternative fuel conveying and processing system includes a quantitative feeder, a high-angle conveyor, a seventeenth belt conveyor, an alternative fuel storage bin, a screw feeder, a first pneumatic flap valve, a second pneumatic flap valve, a pneumatic gate valve and a precombustion furnace. The quantitative feeder, the high-angle conveyor, the seventeenth belt conveyor, the alternative fuel storage bin, the screw feeder, the first pneumatic flap valve, the second pneumatic flap valve, the pneumatic gate valve and the inlet and outlet of the precombustion furnace are connected end to end in sequence, and the outlet of the precombustion furnace is connected to a cement production system.

[0013] In one embodiment of the first aspect, the cement production system includes a decomposition furnace and a cement production raw material system.

[0014] In a second aspect, the present application provides a method for treating construction waste in a cement kiln, comprising the following steps:

[0015] S1: After the construction waste enters the storage workshop, the type of construction waste is determined, and the construction waste types include decoration waste and demolition waste, and they are respectively placed in different storage yards;

[0016] S2: The decoration waste enters the first yard, and the large-sized materials in the materials to be processed are preliminarily picked out. The first loader 1 feeds the materials to be processed and inputs them into the production line. The materials to be processed are fed to the plate feeder 2 and evenly conveyed to the bag breaking and shaping machine 5. The feed particle size is ≤500mm, and the discharge particle size is ≤200mm; the iron metal is then separated by the first iron remover 6, and the remaining materials enter the bouncing screen 8 for screening, and 2D combustibles, 3D materials and screened materials (small and medium-sized aggregates and sand with a diameter of 0-60mm) are screened out; the 2D combustibles enter the light material crushing system through the third belt conveyor 9; the 3D materials are The second manual sorting table 11 selects the combustibles, and the remaining materials are separated from the iron metal by the second iron remover 18, and enter the impact crusher 19 for crushing through the sixth belt conveyor 17; the 0-60mm undersize and the output of the impact crusher 19 are collected and enter the vibrating screen 22, and after entering the vibrating screen 22, they are divided into 0-10mm powder and ≥10mm aggregate, and the powder and aggregate enter the first air separator 25 and the second air separator 27 respectively for air separation, and the light materials and 2D combustibles are collected and enter the light material crushing system through the third belt conveyor 9, and the remaining materials enter the raw material conveying system as part of the raw materials;

[0017] S3: The demolished garbage enters the second yard, and the large-sized materials in the materials to be processed are preliminarily picked out. The second loader feeds the materials into the vibrating feeder for processing, and evenly feeds the materials to the jaw crusher, with the feed particle size ≤500mm and the discharge particle size ≤200mm; the third manual sorting table sorts out the non-aggregate materials, the second iron remover removes the iron metal in the garbage, and the remaining materials enter the impact crusher for crushing. The discharge of the impact crusher enters the vibrating screen, is screened by the vibrating screen and air-selected by the air separator, and the remaining materials enter the raw material conveying system as part of the raw materials;

[0018] S4: The light materials obtained by the construction waste treatment system are transported to the primary crusher through a plate conveyor to break the bags and roughly crush the materials. The crushed materials are removed from the metal by the fourth iron remover, and then transported to the star screen by the thirteenth belt conveyor to remove the large aggregate particles mixed in them, and then transported to the third air separator by the fourteenth belt conveyor to remove the powder adhering to the light materials, and then transported to the secondary crusher by the fifteenth belt conveyor for fine crushing. The crushed materials are controlled within the preset particle size range by the screen mesh size to become high-quality alternative fuels, and then transported to the alternative fuel transportation and processing system by the sixteenth belt conveyor;

[0019] S5: The raw materials delivered by the raw material delivery system are delivered to the cement production raw material system in the cement production system via the twelfth belt conveyor and the electronic belt scale; if the construction waste is mainly demolition waste, the delivered raw materials are used as cement admixtures; if the construction waste is mainly decoration waste, the delivered raw materials are used as cement production raw materials;

[0020] S6: The high-quality alternative fuel product delivered by the light material crushing system passes through the quantitative feeder, the high-angle conveyor, the seventeenth belt conveyor, the alternative fuel storage bin, the screw feeder, the first pneumatic flap valve, the second pneumatic flap valve, and the pneumatic gate valve in sequence, and then enters the pre-combustion furnace for preliminary combustion, and then enters the decomposition furnace in the cement production system to provide heat for raw material decomposition;

[0021] S7: The cement production system regenerates aggregates, powders and light materials processed from construction waste. Aggregates and powders are used as raw materials for cement production, and light materials are used as fuel for cement production after processing.

[0022] Compared with conventional construction waste treatment systems, the beneficial effects of this application are as follows:

[0023] 1. The system can fully recycle aggregates, powder and light materials in construction waste, greatly improving the resource recycling rate.

[0024] 2. By setting up two construction waste feeding ports in the system, both decoration waste and demolition waste can be disposed of, and it has a wide adaptability to construction waste.

[0025] 3. The system can reduce the consumption of fossil fuels and lower carbon emissions.

[0026] 4. The aggregates and powder produced by the system can be used as raw materials for cement production, and the light materials produced can be used as alternative fuels for cement production, reducing the cost of cement production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the system structure of a preferred embodiment of the present application;

[0028] Description of the accompanying drawings: 1. first loader; 2. plate feeder; 3. first belt conveyor; 4. first manual sorting platform; 5. bag breaking and shaping machine; 6. first iron remover; 7. second belt conveyor; 8. bouncing screen; 9. third belt conveyor; 10. fourth belt conveyor; 11. second manual sorting platform; 12. second loader; 13. vibrating feeder; 14. jaw crusher; 15. fifth belt conveyor; 16. third manual sorting platform; 17. sixth belt conveyor; 18. second iron remover; 19. impact crusher; 20. seventh belt conveyor; 21. third iron remover; 22. vibrating screen; 23. eighth belt conveyor; 24. ninth belt conveyor; 25. first air separator; 26 , the tenth belt conveyor; 27, the second air separator; 28, the eleventh belt conveyor; 29, the twelfth belt conveyor; 30, the electronic belt scale; 31, the plate conveyor; 32, the primary crusher; 33, the thirteenth belt conveyor; 34, the fourth iron remover; 35, the star screen; 36, the fourteenth belt conveyor; 37, the third air separator; 38, the fifteenth belt conveyor; 39, the secondary crusher; 40, the sixteenth belt conveyor; 41, the quantitative feeder; 42, the high-angle conveyor; 43, the seventeenth belt conveyor; 44, the alternative fuel storage bin; 45, the screw feeder; 46, the first pneumatic flap valve; 47, the second pneumatic flap valve; 48, the pneumatic gate valve; 49, the pre-combustion furnace; 50, the decomposition furnace. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0030] like Figure 1 Shown is a preferred embodiment of the present application:

[0031] A construction waste treatment system based on cement kiln coordinated disposal includes a construction waste treatment system, a light material crushing system, an alternative fuel conveying and processing system, a raw material conveying system and a cement production system.

[0032] Specifically, the construction waste treatment system includes a first loader 1, a plate feeder 2, a first belt conveyor 3, a first manual sorting table 4, a bag breaking and shaping machine 5, a first iron remover 6, a second belt conveyor 7, a bouncing screen 8, a third belt conveyor 9, a fourth belt conveyor 10, a second manual sorting table 11, a second loader 12, a vibrating feeder 13, a jaw crusher 14, a fifth belt conveyor 15, a third manual sorting table 16, a sixth belt conveyor 17, a second iron remover 18, an impact crusher 19, a seventh belt conveyor 20, a third iron remover 21, a vibrating screen 22, an eighth belt conveyor 23, a ninth belt conveyor 24, a first air separator 25, a tenth belt conveyor 26, a second air separator 27 and an eleventh belt conveyor 28. Among them, the inlet and outlet ports of the first loader 1, the plate feeder 2, the first belt conveyor 3, the first manual sorting table 4, the bag breaking and shaping machine 5, the second belt conveyor 7 and the spring screen 8 are connected end to end in sequence, the second belt conveyor 7 is equipped with a first iron remover 6, the 2D combustibles screened by the spring screen 8 enter the light material crushing system through the third belt conveyor 9, the 3D materials screened by the spring screen 8 are sorted by the second manual sorting table 11 and then enter the impact crusher 19 along the sixth belt conveyor 17, the sixth belt conveyor 17 is equipped with a second iron remover 18, the second loader 12, the vibrating feeder 13, the jaw crusher 14, the fifth belt conveyor The inlets and outlets of the third manual sorting table 15, the sixth belt conveyor 17, the second iron remover 18, the impact crusher 19, the seventh belt conveyor 20 and the vibrating screen 22 are connected end to end in sequence, the powder and aggregate screened by the vibrating screen 22 are respectively sent to the first air separator 25 and the second air separator 27 by the eighth belt conveyor 23 and the ninth belt conveyor 24, the light materials and 2D combustibles screened by the first air separator 25 and the second air separator 27 are collected on the third belt conveyor 9, and the remaining materials screened by the first air separator 25 and the second air separator 27 are respectively sent to the raw material transportation system through the tenth belt conveyor 26 and the eleventh belt conveyor 28.

[0033] Furthermore, the 3D objects screened out by the bouncing screen 8 include but are not limited to wood, stones, and PVC pipes, and the 2D combustibles screened out by the bouncing screen 8 include but are not limited to plastics, paper, woven fabrics and other combustibles.

[0034] The diameter of the powder separated by the vibration screen 22 is 0-10 mm, and the diameter of the aggregate separated by the vibration screen 22 is greater than 10 mm.

[0035] The material conveying system includes a twelfth belt conveyor 29 and an electronic belt scale 30 , and the electronic belt scale 30 is installed on the twelfth belt conveyor 29 .

[0036] The light material crushing system includes a plate conveyor 31, a primary crusher 32, a thirteenth belt conveyor 33, a fourth iron remover 34, a star disk screen 35, a fourteenth belt conveyor 36, a third air separator 37, a fifteenth belt conveyor 38, a secondary crusher 39 and a sixteenth belt conveyor 40, wherein the inlets and outlets of the plate conveyor 31, the primary crusher 32, the thirteenth belt conveyor 33, the star disk screen 35, the fourteenth belt conveyor 36, the third air separator 37, the fifteenth belt conveyor 38, the secondary crusher 39 and the sixteenth belt conveyor 40 are connected end to end in sequence, the fourth iron remover 34 is installed on the thirteenth belt conveyor 33, and the outlet of the sixteenth belt conveyor 40 is connected to the feed port of the alternative fuel transportation and processing system.

[0037] Preferably, the primary crusher 32 is a double-shaft crusher, and the secondary crusher 39 is a single-shaft crusher.

[0038] Furthermore, the alternative fuel conveying and processing system includes a quantitative feeder 41, a high-angle conveyor 42, a seventeenth belt conveyor 43, an alternative fuel storage bin 44, a screw feeder 45, a first pneumatic flap valve 46, a second pneumatic flap valve 47, a pneumatic gate valve 48 and a pre-combustion furnace 49. The inlet and outlet ports of the quantitative feeder 41, the high-angle conveyor 42, the seventeenth belt conveyor 43, the alternative fuel storage bin 44, the screw feeder 45, the first pneumatic flap valve 46, the second pneumatic flap valve 47, the pneumatic gate valve 48 and the pre-combustion furnace 49 are connected end to end in sequence, and the outlet port of the pre-combustion furnace 49 is connected to the cement production system, and the cement production system includes a decomposition furnace 50 and a cement production raw material system.

[0039] Based on the above-mentioned construction waste treatment system based on cement kiln coordinated disposal, the present application also provides a construction waste treatment method based on cement kiln coordinated disposal, and the process is as follows:

[0040] S1: Construction waste is transported into the storage workshop by special vehicles, and it is preliminarily determined whether it is decoration waste or demolition waste, and then enters different storage yards; specifically, the construction waste treatment system is equipped with two feeding ports, and the materials enter different feeding ports according to the nature of the incoming materials. The decoration waste enters through the decoration waste feeding port, and the demolition waste enters through the demolition waste feeding port.

[0041] S2: After the decoration waste enters the yard, large and overlong materials are picked out manually, and the remaining materials enter the production line and are fed by the first loader 1. The decoration waste is directly fed to the plate feeder 2 and evenly transported to the bag breaking and shaping machine 5. The feed particle size is ≤500mm, and the output particle size after crushing is ≤200mm. The iron metal is separated by the first iron remover 6, and the remaining materials enter the bouncing screen 8 for screening. 2D combustibles (such as plastics, paper, woven fabrics, etc.), 3D materials (such as wood, stones, PVC pipes, etc.), and screened materials are screened out; the screened materials are small and medium-sized aggregates with a diameter of 0-60mm and sand, etc. 2D materials enter the light material crushing system through the third belt conveyor 9, The 3D materials are sorted out by the second manual sorting table 11 to separate combustible materials such as wood and PVC pipes, and the remaining materials (mainly stones, bricks, and a small part of metal) are separated from the iron metal by the second iron remover 18, and enter the impact crusher 19 for crushing through the sixth belt conveyor 17. The 0-60mm undersize and the output of the impact crusher 19 are combined and enter the vibrating screen 22. After entering the vibrating screen 22, they are divided into 0-10mm powder and ≥10mm aggregate. The powder and aggregate enter the first air separator 25 and the second air separator 27 respectively for air separation. The light materials screened out are combined with the 3D materials and enter the light material crushing system through the third belt conveyor 9, and the remaining materials enter the raw material transportation system.

[0042] S3: After the demolition waste enters the yard, large and overlong materials are manually picked out, and the feed particle size is ≤500mm. The second loader 12 feeds the material into the vibrating feeder 13 and evenly feeds the material to the jaw crusher 14, and the discharge particle size is ≤200mm. The large pieces of wood, plastic and other non-aggregate materials are sorted out by the third manual sorting table 16, and the second iron remover 18 takes out the iron metal in the waste. The remaining materials enter the impact crusher 19 for crushing. The subsequent process is consistent with the decoration waste treatment process, that is, the remaining materials enter the raw material conveying system after screening by the vibrating screen 22 and air separation by the air separator;

[0043] Among them, the public impact crusher 19 and the subsequent air separation system for renovation waste and demolition waste optimize the overall process flow, which can simplify the system, reduce investment, and save system costs; while the spring screen 8 can adapt to larger materials, reduce manual intervention, improve the mechanization level of the system, and reduce the workload of workers.

[0044] S4: The light materials sent from the construction waste treatment system are conveyed to the primary crusher 32 through the plate conveyor 31 to break the bags and roughly crush the materials, so as to facilitate the subsequent removal of iron metal. The primary crusher adopts a double-shaft crusher. The crushed materials are removed from the iron metal by the fourth iron remover 34, and then conveyed to the star disk screen 35 by the thirteenth belt conveyor 33 to remove the large particles of aggregate mixed in it, and then conveyed to the third air separator 37 by the fourteenth belt conveyor 36 to remove a small amount of powder adhering to the light materials, and then conveyed to the secondary crusher 39 by the fifteenth belt conveyor 38 for fine crushing. The crushed materials are controlled within a certain particle size range through the screen mesh size to become high-quality alternative fuels, and then conveyed to the alternative fuel transportation and processing system by the sixteenth belt conveyor 40. The secondary crusher 39 adopts a single-shaft crusher. The system is characterized in that two-stage crushing is set to reduce the particle size of the alternative fuel product as much as possible. At the same time, the star disk screen 35 and the third air separator 37 are set to remove impurities to ensure the quality of the alternative fuel and improve its use effect.

[0045] S5: The raw materials sent from the construction waste treatment system are sent to the cement production raw material system in the cement production system via the twelfth belt conveyor 29 and the electronic belt scale 30, as shown in Figure A; if most of the construction waste treatment system processes demolition waste, the raw materials sent are used as cement admixtures; if most of the construction waste treatment system processes decoration waste, the raw materials sent are used as cement production raw materials.

[0046] S6: The high-quality alternative fuel products delivered by the light material crushing system are sequentially passed through the quantitative feeder 41, the high-angle conveyor 42, the seventeenth belt conveyor 43, the alternative fuel storage bin 44, the screw feeder 45, the first pneumatic flap valve 46, the second pneumatic flap valve 47, and the pneumatic gate valve 48, and then enter the pre-combustion furnace 49 for preliminary combustion, and then enter the decomposition furnace 50 in the cement production system to provide heat for the decomposition of raw materials;

[0047] Among them, the three valves composed of the first pneumatic flap valve 46, the second pneumatic flap valve 47, and the pneumatic gate valve 48 can isolate the pre-combustion furnace from the outside to ensure the safety of the system; the first and second pneumatic flap valves are opened alternately to allow the material to pass smoothly; when the flap valve fails, the bottom pneumatic gate valve is closed to play a role in safety protection and maintenance;

[0048] The alternative fuel storage bin 44 can act as a buffer to ensure that the alternative fuel enters the pre-combustion furnace 49 evenly and continuously. The function of the pre-combustion furnace 49 is to preliminarily process the alternative fuel, reduce moisture and the particle size of the alternative fuel, so that after the alternative fuel enters the decomposition furnace 50, its impact on the temperature field, flow field, etc. of the decomposition furnace 50 is minimized, while reducing the consumption of fossil fuels and reducing carbon emissions.

[0049] S7: The cement production system is the final disposal end of the system. It can recycle aggregates, powders and light materials processed from construction waste. Aggregates and powders are used as raw materials for cement production, and light materials are used as fuel for cement production after processing. The characteristics of cement production are fully utilized to dispose of construction waste cleanly without any external waste discharge.

[0050] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A construction waste treatment system based on cement kiln coordinated disposal, comprising a construction waste treatment system, a light material crushing system, an alternative fuel transportation and processing system, a raw material transportation system and a cement production system, characterized in that: The construction waste treatment system comprises a first loader (1), a plate feeder (2), a first belt conveyor (3), a first manual sorting platform (4), a bag breaking and shaping machine (5), a first iron remover (6), a second belt conveyor (7), a bouncing screen (8), a third belt conveyor (9), a fourth belt conveyor (10), a second manual sorting platform (11), a second loader (12), a vibrating feeder (13), a jaw crusher (14), a fifth belt conveyor (15), a third manual sorting platform (16), a sixth belt conveyor (17), a second iron remover (18), an impact crusher (19), and a plurality of conveyors. ), a seventh belt conveyor (20), a third iron remover (21), a vibrating screen (22), an eighth belt conveyor (23), a ninth belt conveyor (24), a first air separator (25), a tenth belt conveyor (26), a second air separator (27) and an eleventh belt conveyor (28), wherein the inlet and outlet ports of the first loader (1), the plate feeder (2), the first belt conveyor (3), the first manual sorting table (4), the bag breaking and shaping machine (5), the second belt conveyor (7) and the bouncing screen (8) are connected end to end in sequence, and the second belt conveyor (7) is equipped with a first iron remover (6). The 2D combustibles screened out by the spring screen (8) enter the light material crushing system through the third belt conveyor (9), the 3D materials screened out by the spring screen (8) are sorted by the second manual sorting table (11) and then enter the impact crusher (19) along the sixth belt conveyor (17), the sixth belt conveyor (17) is equipped with a second iron remover (18), the second loader (12), the vibrating feeder (13), the jaw crusher (14), the fifth belt conveyor (15), the third manual sorting table (16), the sixth belt conveyor (17), the second iron remover (18), the impact crusher ( 19), the inlet and outlet of the seventh belt conveyor (20) and the vibrating screen (22) are connected end to end in sequence, the powder and aggregate screened by the vibrating screen (22) are respectively sent to the first air separator (25) and the second air separator (27) by the eighth belt conveyor (23) and the ninth belt conveyor (24), the light materials screened by the first air separator (25) and the second air separator (27) are collected on the third belt conveyor (9), and the remaining materials screened by the first air separator (25) and the second air separator (27) are respectively sent to the raw material conveying system by the tenth belt conveyor (26) and the eleventh belt conveyor (28).

2. A construction waste treatment system based on cement kiln coordinated disposal according to claim 1, characterized in that: The 3D objects screened out by the bouncing screen (8) include wood, stones, and PVC pipes; the 2D combustibles screened out by the bouncing screen (8) include plastics, paper, and woven fabrics.

3. The construction waste treatment system based on cement kiln coordinated disposal according to claim 1 is characterized by: The diameter of the powder separated by the vibration screen (22) is 0-10 mm, and the diameter of the aggregate separated by the vibration screen (22) is greater than 10 mm.

4. The construction waste treatment system based on cement kiln coordinated disposal according to claim 1 is characterized by: The material conveying system comprises a twelfth belt conveyor (29) and an electronic belt scale (30), wherein the electronic belt scale (30) is installed on the twelfth belt conveyor (29).

5. The construction waste treatment system based on cement kiln coordinated disposal according to claim 1 is characterized by: The light material crushing system comprises a plate conveyor (31), a primary crusher (32), a thirteenth belt conveyor (33), a fourth iron remover (34), a star disc screen (35), a fourteenth belt conveyor (36), a third air separator (37), a fifteenth belt conveyor (38), a secondary crusher (39) and a sixteenth belt conveyor (40), wherein the inlets and outlets of the plate conveyor (31), the primary crusher (32), the thirteenth belt conveyor (33), the star disc screen (35), the fourteenth belt conveyor (36), the third air separator (37), the fifteenth belt conveyor (38), the secondary crusher (39) and the sixteenth belt conveyor (40) are connected end to end in sequence, the fourth iron remover (34) is installed on the thirteenth belt conveyor (33), and the outlet of the sixteenth belt conveyor (40) is connected to the inlet of the alternative fuel transportation and processing system.

6. The construction waste treatment system based on cement kiln coordinated disposal according to claim 5 is characterized by: The primary crusher (32) is a double-shaft crusher.

7. The construction waste treatment system based on cement kiln coordinated disposal according to claim 5 is characterized by: The secondary crusher (39) is a single-shaft crusher.

8. The construction waste treatment system based on cement kiln coordinated disposal according to claim 1 is characterized by: The alternative fuel conveying and processing system comprises a quantitative feeder (41), a high-angle conveyor (42), a seventeenth belt conveyor (43), an alternative fuel storage bin (44), a screw feeder (45), a first pneumatic flap valve (46), a second pneumatic flap valve (47), a pneumatic gate valve (48) and a pre-combustion furnace (49). The inlet and outlet ports of the quantitative feeder (41), the high-angle conveyor (42), the seventeenth belt conveyor (43), the alternative fuel storage bin (44), the screw feeder (45), the first pneumatic flap valve (46), the second pneumatic flap valve (47), the pneumatic gate valve (48) and the pre-combustion furnace (49) are connected end to end in sequence, and the outlet port of the pre-combustion furnace (49) is connected to a cement production system.

9. The construction waste treatment system based on cement kiln coordinated disposal according to claim 1 is characterized by: The cement production system comprises a calciner (50) and a cement production raw material system.

10. A method for treating construction waste by cement kiln coordinated disposal based on the system as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1: After the construction waste enters the storage workshop, the type of construction waste is determined, and the construction waste types include decoration waste and demolition waste, and they are respectively placed in different storage yards; S2: The decoration waste enters the first storage yard, and the large-sized materials in the materials to be processed are initially picked out. The first loader (1) feeds the materials to be processed and inputs them into the production line. The materials to be processed are fed to the plate feeder (2) and evenly conveyed to the bag breaking and shaping machine (5). The feed particle size is ≤500mm, and the discharge particle size is ≤200mm. The iron metal is then separated by the first iron remover (6). The remaining materials enter the bouncing screen (8) for screening, and 2D combustibles, 3D materials and screened materials are screened out. The 2D combustibles enter the light material crushing system through the third belt conveyor (9). The 3D materials are selected for combustibles by the second manual sorting table (11), and the remaining materials are sorted by the first The second iron remover (18) separates the iron metal and enters the impact crusher (19) for crushing through the sixth belt conveyor (17); the screened material includes small and medium-sized aggregates with a diameter of 0-60 mm and sand, and the screened material and the output of the impact crusher (19) are collected and enter the vibrating screen (22), and after entering the vibrating screen (22), they are divided into 0-10 mm powder and ≥10 mm aggregate, and the powder and aggregate enter the first air separator (25) and the second air separator (27) respectively for air separation, and the light materials and 2D combustibles are collected and enter the light material crushing system through the third belt conveyor (9), and the remaining materials enter the raw material conveying system as part of the raw materials; S3: The demolished garbage enters the second storage yard, and the large-sized materials in the materials to be processed are preliminarily picked out. The second loader (12) feeds the materials into the vibrating feeder (13) for processing, and evenly feeds the materials to the jaw crusher (14), with the feed particle size ≤500mm and the discharge particle size ≤200mm; the third manual sorting table (16) sorts out the non-aggregate materials, the second iron remover (18) removes the iron metal in the garbage, and the remaining materials enter the impact crusher (19) for crushing. The discharge of the impact crusher (19) enters the vibrating screen (22), is screened by the vibrating screen (22) and air-selected by the air separator, and the remaining materials enter the raw material conveying system as part of the raw materials; S4: The light material obtained by the construction waste treatment system is conveyed to the primary crusher (32) through a plate conveyor (31) to break the bag and roughly crush the material. The crushed material is removed from the metal by the fourth iron remover (34), and then conveyed to the star screen (35) by the thirteenth belt conveyor (33) to remove the large aggregate particles mixed therein, and then conveyed to the third air separator (37) by the fourteenth belt conveyor (36) to remove the powder adhering to the light material, and then conveyed to the secondary crusher (39) by the fifteenth belt conveyor (38) for fine crushing. The crushed material is controlled within a preset particle size range by the screen mesh size to become a high-quality alternative fuel, and then conveyed to the alternative fuel conveying and processing system by the sixteenth belt conveyor (40); S5: The raw materials delivered by the raw material delivery system are delivered to the cement production raw material system in the cement production system via the twelfth belt conveyor (29) and the electronic belt scale (30); if the construction waste is mainly demolition waste, the delivered raw materials are used as cement admixture; if the construction waste is mainly decoration waste, the delivered raw materials are used as cement production raw materials; S6: The high-quality alternative fuel product delivered by the light material crushing system passes through the quantitative feeder (41), the high-angle conveyor (42), the seventeenth belt conveyor (43), the alternative fuel storage bin (44), the screw feeder (45), the first pneumatic flap valve (46), the second pneumatic flap valve (47), and the pneumatic gate valve (48) in sequence, and then enters the pre-combustion furnace (49) for preliminary combustion, and then enters the decomposition furnace (50) in the cement production system to provide heat for raw material decomposition; S7: The cement production system regenerates aggregates, powders and light materials processed from construction waste. Aggregates and powders are used as raw materials for cement production, and light materials are used as fuel for cement production after processing.

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