A method for using a calcium-silicon clay-based recycled aggregate production device

Abstract

The invention discloses a method for using a calcium-silicon clay-based recycled aggregate production device. The calcium-silicon clay-based recycled aggregate production device comprises: a binder silo, an additive silo, an admixture silo, a crushing device, a stirring device, a mixing material conveyor belt, an extrusion molding device, a calcium-silicon clay-based recycled aggregate silo, an automatic metering unit, and a control system; a mud cake is transported to a loading hopper of a crushing device through a feeding device, and an admixture of the admixture silo is added to a loading port through a control system according to production needs; the crushed mud cake is weighed through the control system and transported to a mixing device through a bucket elevator, and the weighed binder and additive are added to the mixing device in sequence and stirred; the stirred mixing material is transported to the extrusion molding device through a mixing material conveyor belt, and the produced and molded calcium-silicon clay-based recycled aggregate enters the calcium-silicon clay-based recycled aggregate silo. The method for using the invention is simple, does not require drying, and has low cost.

Description

Technical Field

[0001] The present invention relates to the field of materialized utilization of solid waste, and in particular to a method for using a calcium-silicon clay-based recycled aggregate production device. Background Art

[0002] In order to meet the people's growing needs for a better life, municipal rail transit in various parts of the country has been continuously developed and improved, and higher and higher process requirements have been put forward for the development and construction of underground space, especially for the large amount of construction waste generated during the construction process. Since the construction waste is generally transported out of the construction site for treatment, it is not only noisy during transportation, but also the leakage of slurry and slag during transportation seriously affects the driving safety of municipal roads. If a construction waste mud and sand separation production line is built at the construction site, it will not only take up a lot of space, but also the mud cake formed by the residual mud after mud and sand separation after flocculation and filtration has large volume, high water content, poor stability, and high difficulty in utilization. At present, these mud cake treatment methods are mainly dumping and landfilling, which will reduce the resource utilization rate of construction waste and waste land resources and environmental pollution. The on-site efficient resource utilization of mud cake after mud and sand separation of construction waste has become a technical problem that needs to be solved in the high-quality development of the industry. In addition, the world spends a huge amount of manpower and material resources every year to clean up various types of silt produced in rivers, lakes and seas. The solid wastes cleaned up are mainly muddy and gelatinous wastes with a high water content, which is still a difficult problem to manage among solid wastes. In particular, there is a lack of large-scale complete sets of production equipment and processes for efficient resource utilization without drying.

[0003] At present, the construction field has high requirements for the mud content in concrete. Generally, the mud content in sand needs to be less than 3%. However, how to apply large amounts of mud cakes to construction engineering practice with high value has always been a technical problem that has plagued the high-quality development of the construction industry. Summary of the invention

[0004] The purpose of the present invention is to propose a method for using a calcium-silicon clay-based recycled aggregate production equipment, in view of the fact that the mud cakes produced after the separation of mud and sand from engineering slag and the colloidal waste with a high water content need to be utilized in large-scale complete sets of production equipment and drying and other process technical difficulties.

[0005] The present invention provides a method for using a calcium-silicon clay-based recycled aggregate production device, wherein the calcium-silicon clay-based recycled aggregate production device comprises: a binder silo, an additive silo, an admixture silo, a crushing device, a stirring device, a mixing material conveyor belt, an extrusion molding device, a calcium-silicon clay-based recycled aggregate silo, an automatic metering unit, and a control system. The binder silo and the additive silo are located above the stirring device, the admixture silo is located above the crushing device, and the crushing device is located below the stirring device. The binder silo, the additive silo, the admixture silo, and the crushing device are all provided with the automatic metering unit. The binder silo, the additive silo, and the crushing device are respectively connected to the stirring device, the stirring device is connected to the extrusion molding device through the mixing material conveyor belt, and the calcium-silicon clay-based recycled aggregate silo is located below the extrusion molding device.

[0006] The method of use comprises the following steps:

[0007] S1. The mud cake is transported to the loading hopper of the crushing equipment through the feeding equipment, and the admixture in the admixture bin is added to the feeding port through the control system according to production needs;

[0008] S2, after weighing the crushed mud cake through the control system, transport it to the mixing equipment through the bucket elevator, and then add the weighed binder and additives to the mixing equipment in turn and mix them;

[0009] S3, conveying the stirred mixture to the extrusion molding equipment through the mixture conveyor belt, and the produced calcium-silicon clay-based recycled aggregate enters the calcium-silicon clay-based recycled aggregate silo.

[0010] Furthermore, the calcium-silicon clay-based recycled aggregate comprises the following raw materials in parts by weight:

[0011] 60-78 parts of mud cake, 1-10 parts of quicklime powder, 1-16 parts of 42.5 grade ordinary Portland cement, 1-5 parts of other raw materials;

[0012] The other raw materials are one of 42.5 grade fast hardening sulphoaluminate cement, dihydrate gypsum powder and 42.5 grade fast hardening ferroaluminate cement.

[0013] Furthermore, the moisture content of the mud cake is ≤60%;

[0014] The particle size of the quicklime powder is 0.07-0.08 mm.

[0015] Furthermore, the produced calcium-silica clay-based recycled aggregate has a 28d cylinder compressive strength greater than 2MPa and a 28d crushing index less than 30%.

[0016] Furthermore, the crushing equipment includes: an upper hopper, an inlet, a crusher, and an outlet. The upper hopper is provided with an automatic metering unit, the inlet is located at the front end of the crusher, the outlet is located at the rear end of the crusher, and the outlet is connected to the mixing equipment through a bucket elevator.

[0017] Furthermore, an iron remover and a material distributor are provided on the mixing material conveyor belt, the iron remover is located on the mixing material conveyor belt between the stirring device and the extrusion molding device, and the material distributor is located above the extrusion molding device;

[0018] Furthermore, the iron remover includes: a rake-type rotating electromagnet, an iron chip collector and an iron removal controller, the rake-type rotating electromagnet is connected to the iron chip collector, the iron removal controller is connected to the rake-type rotating electromagnet, and the lowest point of the rake-type rotating electromagnet is 5 mm away from the upper surface of the mixing material conveyor belt.

[0019] Furthermore, in step S3, the stirred mixed material is conveyed to the extrusion molding equipment through a material distributor after iron removal through a mixed material conveyor belt and an iron remover.

[0020] Furthermore, the extrusion molding equipment is provided with an extrusion roller, and the roller is provided with a roller groove, and the groove is hemispherical.

[0021] Furthermore, five extrusion molding devices are provided, including two with roller groove diameters of 10 mm, two with roller groove diameters of 20 mm and one with roller groove diameters of 30 mm. Extrusion molding devices with roller groove diameters of 30 mm, 20 mm and 10 mm are provided in sequence from near to far from the stirring device.

[0022] The invention provides a method for using the calcium-silicon clay-based recycled aggregate production equipment, which makes high-value-added resource utilization of muddy and gelatinous waste with a high water content, and manufactures muddy and gelatinous waste with a water content of less than 60% into calcium-silicon clay-based recycled aggregate, effectively solving the engineering, social and ecological management problems of high cost, harm to the ecological environment and unsustainable colloidal solid waste management with a high water content, and does not require drying, and the production method is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of the use of a calcium-silicon clay-based recycled aggregate production equipment.

[0024] Figure 2 This is a top view of the plan layout of a calcium-silica clay-based recycled aggregate production equipment.

[0025] Figure 3 This is the main view of the plan layout of a calcium-silica clay-based recycled aggregate production equipment.

[0026] Figure 4This is the right view of the plan layout of a calcium-silica clay-based recycled aggregate production equipment.

[0027] Figure 5 This is a schematic diagram of an iron remover for a calcium-silicon clay-based recycled aggregate production equipment.

[0028] Figure 6 This is a schematic diagram of an extrusion molding device for producing calcium-silicon clay-based recycled aggregate.

[0029] Figure 7 Schematic diagram of an aggregate vibrating screen for producing calcium-silica clay-based recycled aggregate.

[0030] Figure 8 Schematic diagram of a calcium-silica clay-based recycled aggregate.

[0031] In the figure: 1. Binder silo; 2. Additive silo; 3. Blending silo; 4. Crushing equipment; 5. Mixing equipment; 6. Mixing material conveyor belt; 7. Extrusion molding equipment; 8. Calcium-silicon clay-based recycled aggregate silo; 9. Automatic metering unit; 10. Control system; 11. Control room; 12. Upper hopper; 13. Feed inlet; 14. Crusher; 15. Discharge outlet; 16. Bucket elevator; 17. Iron remover; 18. Distributor; 19. Rake-type rotating electromagnet; 20. Iron chip collector; 21. Iron removal controller; 22. Feed inlet; 23. Double-roller extrusion device; 24. Aggregate vibrating screen; 25. Residual material conveyor belt; 26. Extrusion controller; 27. Double-roller wheels; 28. Extrusion motor; 29. ​​Roller cleaning machine; 30. Hemispherical groove; 31. Screen bracket; 32. Aggregate screen; 33. Vibration motor; 34. Flexible bracket; 35. Flexible cover. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0034] like Figure 2As shown, a method for using a calcium-silicon clay-based recycled aggregate production equipment, the calcium-silicon clay-based recycled aggregate production equipment comprises: a binder silo 1, an additive silo 2, an admixture silo 3, a crushing device 4, a stirring device 5, a mixing material conveyor belt 6, an extrusion molding device 7, a calcium-silicon clay-based recycled aggregate silo 8, an automatic metering unit 9, a control system 10 and a control room 11, the binder silo 1 and the additive silo 2 are located above the stirring device 5, the admixture silo 3 is located above the crushing device 4, the crushing device 4 is located below the stirring device 5, the binder silo 1, the additive silo 2, the admixture silo 3 and the crushing device 4 are all provided with the automatic metering unit 9, the binder silo 1, the additive silo 2, the admixture silo 3 and the crushing device 4 are respectively connected to the stirring device 5, the stirring device 5 is connected to the extrusion molding device 7 through the mixing material conveyor belt 6, the calcium-silicon clay-based recycled aggregate silo 8 is located below the extrusion molding device 7, and the control system 10 is located in the control room 11.

[0035] like Figure 1 As shown, the method of use comprises the following steps:

[0036] S1, conveying the mud cake to the loading hopper 12 of the crushing equipment 4 through the loading equipment, and adding the admixture from the admixture bin 3 at the loading port through the control system 10 according to production needs;

[0037] S2, the crushed mud cake is weighed by the control system 10 and transported to the mixing device 5 by the bucket elevator 16, and then the weighed binder and additives are added to the mixing device 5 in sequence and stirred for 3 to 25 minutes;

[0038] S3, conveying the stirred mixture to the extrusion molding equipment 7 through the mixture conveyor belt 6, and the produced calcium-silicon clay-based recycled aggregate enters the calcium-silicon clay-based recycled aggregate silo 8.

[0039] The calcium-silicon clay-based recycled aggregate comprises the following raw materials in parts by weight:

[0040] 60-78 parts of mud cake, 1-10 parts of quicklime powder, 1-16 parts of 42.5 grade ordinary Portland cement, 1-5 parts of other raw materials;

[0041] The other raw materials are one of 42.5 grade fast hardening sulphoaluminate cement, dihydrate gypsum powder and 42.5 grade fast hardening ferroaluminate cement.

[0042] The method for using the calcium-silicon clay-based recycled aggregate production equipment of the present invention can crush mud cakes with a moisture content of less than 60% after adding admixtures, and add binders and additives for stirring, and produce calcium-silicon clay-based recycled aggregates that meet engineering requirements through extrusion molding equipment 7. It does not require drying, and significantly improves the added value of resource utilization of colloidal waste with a high moisture content. It provides a technical solution for the high-quality development of industries related to colloidal waste with a high moisture content, and at the same time effectively provides a new type of recycled aggregate for engineering construction, promoting the development of new quality productivity in the construction industry.

[0043] Optional, such as Figure 3 As shown, the crushing equipment 4 includes: an upper hopper 12, a feed port 13, a crusher 14, and a discharge port 15. The upper hopper 12 is provided with an automatic metering unit 9. The feed port 13 is located at the front end of the crusher 14, and the discharge port 15 is located at the rear end of the crusher 14. The discharge port 15 is connected to the mixing equipment 5 through a bucket elevator 16. By adding admixtures before the mud cake is crushed, the water absorption of the admixtures is utilized to effectively solve the technical problem that the mud cake with a large water content is easy to agglomerate after crushing, and at the same time, the preliminary mixing of the mud cake and the admixture is achieved, and the mixing materials before the calcium silicon clay-based recycled aggregate is fully mixed.

[0044] Optional, such as Figure 4 and Figure 5 As shown, an iron remover 17 and a distributor 18 are arranged on the mixing material conveyor belt 6. The iron remover 17 is located on the mixing material conveyor belt 6 between the stirring device 5 and the extrusion molding device 7. The distributor 18 is located above the extrusion molding device 7. The iron remover 17 includes: a rake-type rotating electromagnet 19, an iron chip collector 20 and an iron removal controller 21. The rake-type rotating electromagnet 19 is connected to the iron chip collector 20, and the iron removal controller 21 is connected to the rake-type rotating electromagnet 19. The lowest point of the rake-type rotating electromagnet 19 is 5 mm away from the upper surface of the mixing material conveyor belt 6. When the rake tip of the rake-type rotating electromagnet 19 of the iron remover 17 rotates to a distance of 50 mm from the mixing material conveyor belt 6, the rake-type rotating electromagnet 19 is energized; when the rake tip of the rake-type rotating electromagnet 19 of the iron remover 17 rotates to a distance of 50 mm from the iron chip collector 20, the rake-type rotating electromagnet 19 is energized and de-energized; by energizing and de-energizing the rake-type rotating electromagnet 19 of the iron remover 17, the iron chips in the mixing material are effectively removed and recovered into the iron chip collector 20, thereby preventing the iron chips mixed in the mixing material from damaging the rollers of the extrusion molding equipment 7, and at the same time ensuring the molding quality of the calcium-silicon clay-based recycled aggregate.

[0045] Optional, such as Figure 6As shown, the extrusion molding equipment 7 includes: a feed port 22, a roller extrusion device 23, an aggregate vibrating screen 24, a residual material conveyor belt 25 and an extrusion controller 26. The feed port 22 is located above the roller extrusion device 23. The feed port 22 is connected to the mixing device 5 through the mixing material conveyor belt 6. The roller extrusion device 23 is located above the aggregate vibrating screen 24. The aggregate vibrating screen 24 is located above the residual material conveyor belt 25. The extrusion controller 26 is connected to the control system 10 and the extrusion molding equipment 7 and is located next to the extrusion molding equipment 7. The mixing material is extruded into calcium-silicon clay-based recycled aggregate through the extrusion molding equipment 7, realizing the large-scale production of colloidal waste with a high moisture content without drying, and providing production equipment support for sustainable development and waste-free city construction.

[0046] Optional, such as Figure 6 As shown, the roller extrusion device 23 includes: roller wheels 27, extrusion motor 28 and roller cleaning machine 29. The surface of the roller wheels 27 is provided with a plurality of hemispherical grooves 30. The roller wheels 27 are connected to the extrusion motor 28. The roller cleaning machine 29 is connected to the extrusion controller 26. The roller cleaning machine 29 is located above the roller wheels 27. By providing the hemispherical grooves 30 on the surface of the roller wheels 27, the mixture of the colloidal waste with a high water content is extruded into an ellipsoidal calcium-silicon clay-based recycled aggregate, so that the calcium-silicon clay-based recycled aggregate is tightly combined together by physical action before molding, thereby reducing the porosity of the calcium-silicon clay-based recycled aggregate, and ensuring that the particle shape of the calcium-silicon clay-based recycled aggregate is uniform and complete, which effectively promotes the strength growth of the calcium-silicon clay-based recycled aggregate.

[0047] Optional, such as Figure 7As shown, the aggregate vibrating screen 24 includes: a screen support 31, an aggregate screen 32, a vibration motor 33, a flexible support 34 and a flexible cover plate 35. The screen support 31 is located below the roller extrusion device 23, the aggregate screen 32 is located on the screen support 31, the vibration motor 33 is located above the aggregate screen 32, the flexible support 34 is connected to the aggregate screen 32, and the flexible cover plate 35 is connected to the flexible support 34. The aggregate vibrating screen 24 effectively removes the connecting materials between the particles of the calcium-silicon clay-based recycled aggregate and the edge materials of the particles, and these connecting materials, edge materials and other unformed mixed materials are screened out, and the screened mixed materials are conveyed to the extrusion molding equipment 7 through the residual material conveyor belt 25 to be extruded into the calcium-silicon clay-based recycled aggregate again, thereby improving the appearance quality of the calcium-silicon clay-based recycled aggregate particles and the utilization rate of the mixed materials, and effectively avoiding the calcium-silicon clay-based recycled aggregate from agglomerating and being difficult to disperse after entering the calcium-silicon clay-based recycled aggregate bin 8 due to the bridging and bonding effect of the unformed mixed materials, and at the same time eliminating the influence of the connecting materials between the particles of the calcium-silicon clay-based recycled aggregate, the edge materials of the particles and other unformed mixed materials on the cylinder compressive strength and crushing index test results of the calcium-silicon clay-based recycled aggregate.

[0048] Optional, such as Figure 2 and Figure 4 As shown, 5 extrusion forming devices 7 are provided, 2 of which have roller grooves with a diameter of 10 mm, 2 of which have roller grooves with a diameter of 20 mm, and 1 of which has roller grooves with a diameter of 30 mm. Extrusion forming devices 7 with roller grooves with diameters of 30 mm, 20 mm, and 10 mm are provided in sequence from near to far from the stirring device 5. By providing extrusion forming devices 7 with different particle sizes, the needs of different uses for the particle size of calcium-silicon clay-based recycled aggregates can be met; at the same time, the extrusion forming device 7 with a larger particle size is provided at the position closest to the stirring device 5, which is conducive to the residual material conveyed by the residual material conveyor belt 25 to be first extruded into calcium-silicon clay-based recycled aggregates with larger particle sizes, and then extruded into calcium-silicon clay-based recycled aggregates with smaller particle sizes.

[0049] Optionally, in step S3, the stirred mixture is passed through the mixture conveyor belt 6 and the iron remover 17 to remove iron, and then is conveyed to the extrusion molding device 7 through the distributor 18; the formed calcium-silicon clay-based recycled aggregate is vibrated and screened by the aggregate vibrating screen 24 and falls into the calcium-silicon clay-based recycled aggregate bin 8; the remaining material after the vibrating screening is conveyed to the mixture conveyor belt 6 through the remaining material conveyor belt 25;

[0050] Optionally, step S4 is further provided, after the mixing material on the mixing material conveyor belt 6 is produced, the roller cleaning machine 29 is controlled by the control system 10 to clean the roller.

[0051] Optionally, the extrusion molding device 7 can be controlled by the control system 10 to control the extrusion controller 26, and can also be controlled by the extrusion controller 26 alone.

[0052] Optionally, the produced calcium-silica clay-based recycled aggregate has a 28d cylinder compressive strength greater than 2MPa and a 28d crushing index less than 30%.

[0053] By using a method for producing calcium-silica clay-based recycled aggregate production equipment, calcium-silica clay-based recycled aggregate that does not require drying is produced on a large scale, effectively solving the technical problem of resource utilization of colloidal waste with a high water content, and realizing high-value-added resource utilization of colloidal waste with a high water content, providing valuable industrial technology solutions for the high-quality development of industries related to colloidal waste with a high water content and the development of new quality productivity.

[0054] Example 1

[0055] like Figure 1 and Figure 7 As shown, 60 parts of mud cake with a moisture content of 60% and 10 parts of quicklime powder with a particle size of 0.074 mm are added to the crushing equipment 4, and the crushed material is lifted to the mixing equipment 5 by the bucket elevator 16. At the same time, 15 parts of 42.5-grade ordinary silicate cement and 5 parts of 42.5-grade fast-hardening sulphoaluminate cement are added to the mixing equipment 5. After stirring for 3 minutes, the mixed material is deironed and divided through the mixing material conveyor 6 and conveyed to the extrusion molding equipment 7. The extruded calcium-silicon clay-based recycled aggregate is screened by the aggregate vibrating screen 24 to remove the residual material and fall into the calcium-silicon clay-based recycled aggregate bin 8. After curing for 3 days, it is taken out of the bin and stacked for further curing or use; the residual material screened out by the aggregate vibrating screen 24 is conveyed to the mixing material conveyor 6 through the residual material conveyor 25 to continue to produce the calcium-silicon clay-based recycled aggregate; after the mixing material on the mixing material conveyor 6 is produced, the roller cleaning machine 29 is started to clean the roller.

[0056] The appearance of the produced calcium-silicon clay-based recycled aggregate is as follows Figure 8 As shown, the 28d cylinder compression strength and crushing index are 3.6MPa and 15% respectively.

[0057] Example 2

[0058] like Figure 1 and Figure 7As shown, 73 parts of mud cake with a moisture content of 45% and 7 parts of quicklime powder with a particle size of 0.074 mm are added to the crushing equipment 4, and the crushed material is lifted to the mixing equipment 5 by the bucket elevator 16. At the same time, 16 parts of 42.5-grade ordinary silicate cement and 4 parts of dihydrate gypsum powder with a particle size of 0.074 mm are added to the mixing equipment 5. After stirring for 15 minutes, the mixed material is deironed and divided by the mixing material conveyor 6 and conveyed to the extrusion molding equipment 7. The extruded calcium-silicon clay-based recycled aggregate is screened by the aggregate vibrating screen 24 to remove the residual material and fall into the calcium-silicon clay-based recycled aggregate bin 8. After curing for 3 days, it is taken out of the bin and stacked for further curing or use; the residual material screened by the aggregate vibrating screen 24 is conveyed to the mixing material conveyor 6 by the residual material conveyor 25 to continue to produce the calcium-silicon clay-based recycled aggregate; after the mixing material on the mixing material conveyor 6 is produced, the roller cleaning machine 29 is started to clean the roller.

[0059] The appearance of the produced calcium-silicon clay-based recycled aggregate is as follows Figure 8 As shown, the 28d cylinder compression strength and crushing index are 4.9 MPa and 13% respectively.

[0060] Example 3

[0061] like Figure 1 and Figure 7 As shown, 78 parts of mud cake with a moisture content of 30% and 1 part of stone powder with a particle size of 0.074 mm are added to the crushing equipment 4, and the crushed material is lifted to the mixing equipment 5 by the bucket elevator 16. At the same time, 16 parts of 42.5-grade ordinary silicate cement and 1 part of 42.5-grade rapid hardening ferroaluminate cement are added to the mixing equipment 5. After stirring for 25 minutes, the mixed material is deironed and divided by the mixing material conveyor 6 and conveyed to the extrusion molding equipment 7. The extruded calcium-silicon clay-based recycled aggregate is screened by the aggregate vibrating screen 24 to remove the residual material and fall into the calcium-silicon clay-based recycled aggregate bin 8. After curing for 3 days, it is taken out of the bin and stacked for further curing or use; the residual material screened by the aggregate vibrating screen 24 is conveyed to the mixing material conveyor 6 by the residual material conveyor 25 to continue to produce the calcium-silicon clay-based recycled aggregate; after the mixing material on the mixing material conveyor 6 is produced, the roller cleaning machine 29 is started to clean the roller.

[0062] The appearance of the produced calcium-silicon clay-based recycled aggregate is as follows Figure 8 As shown, the 28d cylinder compression strength and crushing index are 5.3MPa and 12% respectively.

[0063] The produced calcium-silicon clay-based recycled aggregate is prepared by adding colloidal waste with a high water content to an admixture, crushing the admixture, and then adding a binder and an additive before extrusion molding. It has the advantages of fast molding, low manufacturing cost, and no waste of raw materials in the molding process. At the same time, colloidal waste with a high water content, such as river silt, is made into calcium-silicon clay-based recycled aggregate, which not only reduces the cost of river silt treatment, but also produces value-added products, realizing efficient and high-value-added resource industrial utilization of colloidal waste with a high water content, such as river silt, and providing large-scale industrial equipment and process solutions for the high-quality development of industries related to colloidal waste with a high water content and the development of new quality productivity.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the specification of this application, the technicians can still modify or replace the specific implementation mode of the present invention with equivalents, but these modifications or changes do not deviate from the scope of protection of the pending claims of the present application.

Claims

1. A method for using a calcium-silicon clay-based recycled aggregate production device, characterized in that: The calcium-silicon clay-based recycled aggregate production equipment includes: a binder silo, an additive silo, an admixture silo, a crushing device, a stirring device, a mixing material conveyor belt, an extrusion molding device, a calcium-silicon clay-based recycled aggregate silo, an automatic metering unit, and a control system. The binder silo and the additive silo are located above the stirring device, the admixture silo is located above the crushing device, and the crushing device is located below the stirring device. The binder silo, the additive silo, the admixture silo, and the crushing device are all provided with the automatic metering unit. The binder silo, the additive silo, and the crushing device are respectively connected to the stirring device. The stirring device is connected to the extrusion molding device through the mixing material conveyor belt. The calcium-silicon clay-based recycled aggregate silo is located below the extrusion molding device. The method of use comprises the following steps: S1. The mud cake is transported to the loading hopper of the crushing equipment through the feeding equipment, and the water-absorbing admixture in the admixture bin is added to the feeding port through the control system according to production needs; S2, after weighing the crushed mud cake through the control system, transport it to the mixing equipment through the bucket elevator, and then add the weighed binder and additives to the mixing equipment in turn and mix them; S3, conveying the stirred mixture to the extrusion molding equipment through the mixture conveyor belt, and the produced calcium-silicon clay-based recycled aggregate enters the calcium-silicon clay-based recycled aggregate silo; The calcium-silicon clay-based recycled aggregate comprises the following raw materials in parts by weight: 60-78 parts of mud cake, 1-10 parts of quicklime powder, 1-16 parts of 42.5 grade ordinary Portland cement, 1-5 parts of other raw materials; The other raw materials are one of 42.5 grade fast hardening sulphoaluminate cement, dihydrate gypsum powder and 42.5 grade fast hardening ferroaluminate cement; The moisture content of the mud cake is ≤60%; The particle size of the quicklime powder is 0.07-0.08 mm; The extrusion forming equipment is provided with an extrusion roller, and the extrusion roller is provided with a roller groove, and the roller groove is hemispherical; The calcium-silicon clay-based recycled aggregate is ellipsoidal; The mud cake is produced after the separation of engineering slag mud and sand.

2. The method for using the calcium-silicon clay-based recycled aggregate production equipment according to claim 1, characterized in that: The produced calcium-silica clay-based recycled aggregate has a 28d cylinder compressive strength greater than 2MPa and a 28d crushing index less than 30%.

3. The method for using the calcium-silicon clay-based recycled aggregate production equipment according to claim 1, characterized in that: The pulverizing equipment comprises: an upper hopper, an inlet, a pulverizer, and an outlet. The upper hopper is provided with an automatic metering unit. The inlet is located at the front end of the pulverizer, the outlet is located at the rear end of the pulverizer, and the outlet is connected to the mixing equipment through a bucket elevator.

4. The method for using the calcium-silicon clay-based recycled aggregate production equipment according to claim 1, characterized in that: An iron remover and a material distributor are arranged on the mixing material conveyor belt. The iron remover is located on the mixing material conveyor belt between the stirring device and the extrusion molding device, and the material distributor is located above the extrusion molding device.

5. The method for using the calcium-silicon clay-based recycled aggregate production equipment according to claim 4, characterized in that: The iron remover includes: a rake-type rotating electromagnet, an iron chip collector and an iron removal controller. The rake-type rotating electromagnet is connected to the iron chip collector, and the iron removal controller is connected to the rake-type rotating electromagnet. The lowest point of the rake-type rotating electromagnet is 5 mm away from the upper surface of the mixing material conveyor belt.

6. The method for using the calcium-silicon clay-based recycled aggregate production equipment according to claim 4, characterized in that: In step S3, the stirred mixed material is passed through a mixed material conveyor belt and an iron remover to remove iron, and then is conveyed to an extrusion molding device through a distributor.

7. The method for using the calcium-silicon clay-based recycled aggregate production equipment according to claim 6, characterized in that: Five extrusion molding devices are provided, including two with roller groove diameters of 10 mm, two with roller groove diameters of 20 mm and one with roller groove diameters of 30 mm. Extrusion molding devices with roller groove diameters of 30 mm, 20 mm and 10 mm are provided in sequence from near to far from the stirring device.

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