Construction waste treatment system based on cement kiln co-treatment

Abstract

The utility model discloses a construction waste treatment system based on cement kiln co-processing, which 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, the construction waste treatment system comprises 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 and a fifth belt conveyor. A third manual sorting table, a sixth belt conveyor, a second iron remover, an impact crusher and the like; the resource recycling rate is increased, and the adaptability is wide; aggregate and powder generated by the system can be used as raw materials for cement production, and generated light substances can be used as alternative fuel for cement production, so that the cement production cost is reduced.

Description

Technical Field

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

[0002] With the acceleration of urbanization and the booming construction industry, a large amount of construction waste has been generated. Currently, my country has formed a diversified technology 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 the aggregates in the construction waste, and the resource recycling rate is low. 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 co-disposal to solve the above problems. Utility Model Content

[0004] The purpose of this application is to provide a construction waste treatment system based on cement kiln co-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 recovery 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] 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, wherein the construction waste treatment system includes a first loader, a plate feeder, a first belt conveyor, a first manual sorting platform, 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 platform, a second loader, a vibrating feeder, a jaw crusher, a fifth belt conveyor, a third manual sorting platform, 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 inlets and outlets of the first loader, the plate feeder, the first belt conveyor, the first manual sorting platform, the bag breaking and shaping machine, the second belt conveyor and the bouncing screen are arranged in order. The first belt conveyor is connected end to end, and the second belt conveyor is equipped with a first iron remover. The 2D combustibles screened by the bouncing screen enter the light material crushing system through the third belt conveyor. The 3D materials screened by the bouncing 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, vibrating feeder, jaw crusher, fifth belt conveyor, third manual sorting table, sixth belt conveyor, second iron remover, impact crusher, seventh belt conveyor and the inlet and outlet of the vibrating screen are connected end to end in sequence. The powder and aggregate screened by the vibrating screen are respectively sent to the first air separator and the second air separator by the eighth belt conveyor and the ninth belt conveyor. The light materials and 2D combustibles screened by the first air separator and the second air separator are collected on the third belt conveyor. The remaining materials screened by the first air separator and the second air separator are respectively sent to the raw material conveying system through the tenth belt conveyor and the eleventh belt conveyor.

[0007] In one embodiment, the 3D objects screened out by the bouncing screen include but are not limited to wood, stones, and PVC pipes. The 2D combustibles screened out by the bouncing screen include but are not limited to combustibles such as plastic, paper, and woven fabrics.

[0008] In one embodiment, 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 one embodiment, the raw 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, the light material crushing system includes a plate conveyor, a primary crusher, a thirteenth belt conveyor, a fourth iron remover, a star 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 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 embodiment, the primary crusher is a double-shaft crusher; and the secondary crusher is a single-shaft crusher.

[0012] In one embodiment, 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 the cement production system.

[0013] In one embodiment, the cement production system includes a calciner and a cement production raw material system.

[0014] Compared with conventional construction waste treatment systems, the beneficial effects of this application are as follows:

[0015] 1. The system can fully recycle aggregates, powder and light materials in construction waste, greatly improving the resource recycling rate.

[0016] 2. By setting up two construction waste feeding ports in the system, it can handle both decoration waste and demolition waste, and has a wide adaptability to construction waste.

[0017] 3. The system can reduce fossil fuel consumption and lower carbon emissions.

[0018] 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

[0019] Figure 1 This is a schematic diagram of the system structure of a preferred embodiment of the present application;

[0020] Explanation of the accompanying symbols: 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

[0021] 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 the embodiments.

[0022] like Figure 1 Shown is a preferred embodiment of the present application:

[0023] 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.

[0024] Specifically, the construction waste treatment system includes 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, 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 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 inlet and outlet of 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 15. The inlet and outlet ports of the third manual sorting table 16, 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 and sent to the third belt conveyor 9. 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.

[0025] Furthermore, the 3D objects screened by the spring screen 8 include but are not limited to wood, stones, and PVC pipes, and the 2D combustibles screened by the spring screen 8 include but are not limited to plastic, paper, woven fabrics, and other combustibles. The spring screen 8 can feed larger materials, reducing manual intervention, improving the system's mechanization level, and reducing worker workload.

[0026] The diameter of the powder screened by the vibrating screen 22 is 0-10 mm, and the diameter of the aggregate screened by the vibrating screen 22 is greater than 10 mm.

[0027] The raw 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 .

[0028] 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 disc screen 35, a fourteenth belt conveyor 36, a third air separator 37, a fifteenth belt conveyor 38, a secondary crusher 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 feed port of the alternative fuel transportation and processing system.

[0029] Preferably, the first crusher 32 is a double-shaft crusher, and the second crusher 39 is a single-shaft crusher. The two-stage crushing minimizes the particle size of the alternative fuel product. At the same time, the star screen 35 and the third air separator 37 are provided to remove impurities, thereby ensuring the quality of the alternative fuel and improving its use effect.

[0030] 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.

[0031] How the system works:

[0032] When the system is working, construction waste is transported into the storage workshop by special vehicles, and it is preliminarily judged 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 according to the nature of the incoming material, it enters different feeding ports, decoration waste enters through the decoration waste feeding port, and demolition waste enters through the demolition waste feeding port.

[0033] 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 loaded into 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, 3D materials and undersize materials (small and medium-sized aggregates with a diameter of 0-60mm and sand) are screened out. 2D materials include but are not limited to combustibles such as plastics, paper, and woven fabrics, and 3D materials include but are not limited to wood, stones, PVC pipes, etc.; 2D materials enter the light material crushing system through the third belt conveyor 9, and 3D materials enter the second The manual sorting table 11 selects combustible materials such as wood and PVC pipes (stones, metals, etc. do not need to be sorted out), and the remaining materials (mainly including stones, bricks, and a small part of metal) are separated from iron metals by the second iron remover 18, and then enter the impact crusher 19 for crushing through the sixth belt conveyor 17. The 0-60mm undersize material 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 and 2D combustible materials screened out are combined and enter the light material crushing system through the third belt conveyor 9. The remaining materials enter the raw material conveying system as part of the raw materials.

[0034] After the demolition waste enters the yard, large and overlong materials are manually sorted out and fed by the second loader 12 into the vibrating feeder 13 for uniform feeding to the jaw crusher 14 (feed particle size ≤ 500mm, discharge particle size ≤ 200mm). The large pieces of wood, plastic and other non-aggregate materials are sorted out by the third manual sorting table 16. The second iron remover 18 removes 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, screening by the vibrating screen 22 and air separation by the air separator. The remaining materials enter the raw material conveying system as another part of the raw materials.

[0035] Among them, the public impact crusher 19 and the subsequent air separation system for renovation waste and demolition waste optimize the overall process flow, 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.

[0036] The light material sent by the light material crushing system is conveyed by the plate conveyor 31 to the primary crusher 32 for bag breaking and coarse crushing to facilitate the subsequent removal of iron metal. The primary crusher adopts a double-shaft crusher. The crushed material passes through the fourth iron remover 34 to remove the iron metal, and then is conveyed by the thirteenth belt conveyor 33 to the star disk screen 35 to remove large particles of aggregate mixed in it. The material is then conveyed by the fourteenth belt conveyor 36 to the third air separator 37 to remove a small amount of powder adhering to the light material. The material is then conveyed by the fifteenth belt conveyor 38 to the secondary crusher 39 for fine crushing. The crushed material is controlled within a certain particle size range by the screen mesh size to become high-quality alternative fuel. It is then conveyed by the sixteenth belt conveyor 40 to the alternative fuel transportation and processing system. The secondary crusher 39 adopts a single-shaft crusher. The system is characterized by two-stage crushing to minimize the particle size of the alternative fuel product. 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.

[0037] The raw materials delivered by the raw material conveying 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, as shown in Figure A; if most of the waste processed by the system is demolition waste, the raw materials delivered are used as cement admixtures; if most of the waste processed by the system is decoration waste, the raw materials delivered are used as cement production raw materials.

[0038] The high-quality alternative fuel products delivered by the light material crushing system pass 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. After that, they enter the calciner 50 in the cement production system to provide heat for the decomposition of the raw meal.

[0039] The three valves, consisting 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, ensuring system safety. The first and second pneumatic flap valves open alternately to allow materials to pass through smoothly. When the flap valve fails, the bottom pneumatic gate valve closes, providing safety protection and maintenance.

[0040] 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.

[0041] The cement production system is the final disposal end of the system. It can regenerate 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.

[0042] It will be apparent 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 characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A construction waste treatment system based on cement kiln co-processing, 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 by: 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), 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 first loader (1), the plate feeder (2), the first belt conveyor (3), the first manual sorting platform (4), the bag breaking and shaping machine (5), the second belt conveyor (7) and The inlet and outlet of the spring screen (8) are connected end to end in sequence. The first iron remover (6) is installed on the second belt conveyor (7). 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 (15), The inlet and outlet ports of the third manual sorting table (16), 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 and sent to the third belt conveyor (9). 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. The construction waste treatment system based on cement kiln coordinated disposal according to claim 1 is characterized by: The diameter of the powder sieved by the vibrating screen (22) is 0-10 mm, and the diameter of the aggregate sieved by the vibrating screen (22) is greater than 10 mm.

3. The construction waste treatment system based on cement kiln coordinated disposal according to claim 1 is characterized by: The raw 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).

4. The construction waste treatment system based on cement kiln coordinated disposal according to claim 1 is characterized by: 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 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.

5. The construction waste treatment system based on cement kiln coordinated disposal according to claim 4 is characterized by: The primary crusher (32) is a double-shaft crusher.

6. The construction waste treatment system based on cement kiln coordinated disposal according to claim 4 is characterized by: The secondary crusher (39) is a single-shaft crusher.

7. 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 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) have inlet and outlet ports connected end to end in sequence, and the outlet port of the pre-combustion furnace (49) is connected to a cement production system.

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

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