Recovery processing system for preparing cement active admixture based on graphite tailings

Abstract

The invention belongs to the technical field of application of graphite tailings, and particularly relates to a recovery treatment system for preparing a cement active admixture based on graphite tailings. The crushing device comprises an upper box, a lower box, a primary crushing roller, a counterattack block, a material throwing roller, a transverse screening assembly, a longitudinal crushing assembly, a circulating conveying belt and a material sucking and drying assembly, the upper box is arranged at the upper end of the lower box, a feeding opening is formed in the upper portion of the upper box, and the primary crushing roller is installed in the upper box; a plurality of counterattack blocks and a material throwing roller are mounted on the upper box around the primary crushing roller; a transverse screening assembly is installed between the upper box and the lower box, a longitudinal crushing assembly and a circulating conveying belt are sequentially installed on the lower box and located below the transverse screening assembly, and a material sucking and drying assembly is installed on the lower box and located above the circulating conveying belt; according to the invention, the graphite tailings can be crushed and graded, the graded tailings are subjected to drying activation treatment and graded storage, and the requirements of preparation of the cement active admixture on the graphite tailings are met.

Description

Technical Field

[0001] The invention belongs to the technical field of graphite tailings application, and in particular relates to a recovery and processing system for preparing cement active admixture based on graphite tailings. Background Art

[0002] The benefits of using graphite tailings to prepare active cement admixtures include the following: 1) Abundant resources: Graphite tailings are fine-grained, available in large quantities, and low-cost. They are also rich in silicon, aluminum, and other components, making them highly active. 2) Improving cement performance: The silicate minerals in graphite tailings react with CaO in cement clinker to form calcium silicate hydrate, enhancing the cement's early strength. Graphite tailings also possess a certain degree of pozzolanic activity, reacting with Ca(OH)2 in cement clinker to form calcium silicate hydrate and calcium aluminate hydrate, improving the cement's later strength and durability. 3) Reducing production costs: Graphite tailings can partially replace natural clay or aluminum raw materials, reducing the demand for these natural resources and thus lowering production costs. 4) Reducing carbon emissions: The utilization of graphite tailings helps alleviate sand and gravel supply shortages. Furthermore, in cement production, graphite tailings can reduce the use of CaO, further reducing CO2 emissions and contributing to the development of green building materials. 5) Reduce environmental pollution: The rational use of graphite tailings can also reduce the occupation of farmland and the pollution of the environment by tailings, which has huge social and economic benefits.

[0003] When using graphite tailings to prepare cement active admixtures, a recycling and processing system is required to pre-treat the graphite tailings to ensure their stable performance. The pre-treatment process mainly activates the graphite tailings through crushing and classification to increase its contact area and reactivity with cement clinker.

[0004] Traditional recycling and processing systems for preparing active cement admixtures from graphite tailings have shortcomings. First, their crushing mechanism is not properly designed, failing to fully crush the graphite tailings. Second, their grading mechanism is not properly designed, failing to quickly adjust the grading specifications based on demand. Third, they cannot dry and activate the graded tailings pellets. Therefore, optimization and improvement of traditional recycling and processing systems are needed. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned problems existing in the traditional technology and provide a recovery and treatment system for preparing cement active admixture based on graphite tailings.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a recycling and processing system for preparing cement active admixtures based on graphite tailings, comprising an upper box, a lower box, a primary crushing roller, an impact block, a throwing roller, a transverse screening component, a longitudinal crushing component, a circulating conveyor belt and a material suction and drying component. The upper box is arranged at the upper end of the lower box, a feeding port is provided at the upper part of the upper box, a primary crushing roller is installed inside the upper box, a plurality of impact blocks and a throwing roller are installed around the primary crushing roller, a transverse screening component is installed between the upper box and the lower box, a longitudinal crushing component is installed on the lower box below the transverse screening component, a circulating conveyor belt is installed on the lower box below the longitudinal crushing component, and a material suction and drying component is installed on the lower box above the circulating conveyor belt.

[0008] Furthermore, in the above-mentioned recycling and processing system for preparing cement active admixtures based on graphite tailings, the primary crushing roller includes a roller body, a drive shaft, a wear-resistant ring and a crushing impact head, a drive shaft for driving it to rotate is installed at the center of the roller body, a wear-resistant ring is installed on the outside of the roller body, and several crushing impact heads are installed circumferentially on the outside of the wear-resistant ring.

[0009] Furthermore, in the above-mentioned recycling and processing system for preparing cement active admixtures based on graphite tailings, the impact block includes a base block, a flexible pad, an impact block and a fastener, and the flexible pad and the impact block are installed on the outer side of the base block in sequence, and the flexible pad and the impact block are installed on the base block through fasteners.

[0010] Furthermore, in the above-mentioned recycling and processing system for preparing cement active admixtures based on graphite tailings, there are three counterattack blocks, which are respectively arranged directly above, above the left and below the left of the primary crushing roller, the feeding port is arranged at the upper right of the primary crushing roller, and the throwing roller is arranged at the lower right of the primary crushing roller.

[0011] Furthermore, in the above-mentioned recycling and processing system for preparing cement active admixtures based on graphite tailings, the horizontal screening assembly includes a movable partition, a fixed partition, a servo motor and a toggle gear. The fixed partition is fixed between the upper box and the lower box. A number of lower screening holes are installed on the fixed partition. A servo motor is installed at the outer end of the fixed partition. A toggle gear is installed at the output end of the servo motor. A number of upper screening holes are installed on the movable partition. A row of toggle tooth grooves meshing with the toggle gear are provided on the lower side of the movable partition near the servo motor; the right side plate of the upper box is provided with strip-shaped perforations for facilitating the passage of the movable partition, and the lower screening holes and the upper screening holes are rectangular through holes of the same specifications.

[0012] Furthermore, in the above-mentioned recycling and processing system for preparing cement active admixtures based on graphite tailings, the longitudinal crushing assembly includes an aggregate trough, a drop pipe, a longitudinal push rod, a push plate, a support shaft, a rotary joint, a positioning shaft, crushing cams and a crushing roller. The top of the aggregate trough is fixed to the lower side of the fixed partition and covers all the lower screening holes. The bottom end of the aggregate trough is equipped with a drop pipe. There are multiple longitudinal push rods and they are installed side by side on the rear side plate of the lower box. The movable end of the longitudinal push rod is equipped with a push plate. Two supporting shafts are installed in parallel on the push plate. The outer end of each supporting shaft is connected to a positioning shaft via a rotary joint. The inner wall of the front side plate of the lower box is equipped with multiple positioning sleeves which are sleeved on the outside of the corresponding positioning shafts. A number of staggered crushing cams and crushing rollers are installed on the positioning shaft.

[0013] Furthermore, in the above-mentioned recycling and processing system for preparing cement active admixtures based on graphite tailings, the spacing value between two adjacent crushing teeth on the positioning shaft is equal to the longitudinal length value of the rectangular through hole, and the spacing value between two adjacent crushing rollers on the positioning shaft in the same row is equal to the lateral width value of the rectangular through hole.

[0014] Furthermore, in the above-mentioned recycling and processing system for preparing cement active admixture based on graphite tailings, the input end of the circulating conveyor belt is located below the drop pipe, and ribs are provided on both sides of the belt body of the circulating conveyor belt.

[0015] Furthermore, in the above-mentioned recycling and processing system for preparing cement active admixtures based on graphite tailings, the suction and drying assembly includes a blower, a first horizontal pipe, a vertical pipe, a second horizontal pipe, a branch pipe, a collecting hopper, a suction pipe, a drying shell, a water absorbent, a spiral heating pipe and a circulating heating oil tank. The output end of the blower is connected to the collecting hopper via the first horizontal pipe, the vertical pipe, the second horizontal pipe and the branch pipe in sequence. The drying shell is installed on the outside of the vertical pipe. A spiral heating pipe is installed between the drying shell and the vertical pipe. Both ends of the spiral heating pipe pass through the drying shell and are connected to the circulating heating oil tank. The circulating heating oil tank is fixed to the outer wall of the left side plate of the lower box. The left side plate of the lower box is provided with a circular through-hole for facilitating the passage of the first horizontal pipe. The pipe portion of the vertical pipe located inside the drying shell is equipped with a water absorbent for transferring moisture in the pipe to the outside of the pipe. The bottom end of the drying shell is equipped with an annular fan for blowing air on the water absorbent. The top end of the drying shell is equipped with a hollow connecting plate for fixing the position of the drying shell to the vertical pipe.

[0016] Furthermore, in the above-mentioned recycling and processing system for preparing cement active admixtures based on graphite tailings, the water absorbent is composed of an inner ring portion, a connecting plate portion, an outer ring portion and a fin plate portion, and a plurality of connecting plate portions penetrating vertical pipes are connected between the outer wall of the inner ring portion and the inner wall of the outer ring portion, and a plurality of fin plate portions are evenly distributed on the outside of the outer ring portion; the inner ring portion, connecting plate portion, outer ring portion and fin plate portion of the water absorbent are made of silicon carbide ceramic material as a whole; the interior of the water absorbent is evenly distributed with three-dimensional pore channels, which can use capillary water absorption to quickly transfer the moisture adsorbed by the inner ring portion to the outer ring portion and the fin plate portion, and then transfer it to the outside air through volatilization.

[0017] The beneficial effects of the present invention are:

[0018] 1. The present invention is provided with a primary crushing roller, an impact block and a throwing roller in the upper box. The primary crushing roller is used to crush the graphite tailings, and the impact block is used to impact-crush the graphite tailings thrown out by the primary crushing roller during the crushing process. The graphite tailings at the diagonal end of the throwing roller are re-added for crushing. In this way, cyclic crushing can be achieved.

[0019] 2. The present invention installs a transverse screening assembly between the upper and lower boxes, and a lateral crushing assembly below the transverse screening assembly. The transverse screening assembly can be used to limit and adjust the transverse width of the discharged tailings particles, while the crushing assembly can be used to limit and adjust the longitudinal length of the discharged tailings particles. Ultimately, the graphite tailings are graded and discharged in a chronological order of increasing particle size. A circulating conveyor belt guides the graded discharged tailings particles in sequence to the suction and drying assembly.

[0020] 4. The suction drying assembly of the present invention is rationally designed and primarily comprises a blower, a first horizontal pipe, a vertical pipe, a second horizontal pipe, a branch pipe, a collection hopper, a suction pipe, a drying housing, a water absorbing element, a spiral heating pipe, and a circulating heating oil tank. These components work together to utilize the wind force generated by the blower to direct the graded tailings pellets conveyed by the circulating conveyor belt into the corresponding collection hopper. The conveying pipeline primarily comprises the first horizontal pipe, the vertical pipe, and the second horizontal pipe. The branch pipe is used to switch the conveying pipeline to the corresponding collection hopper to match the grading specifications. The suction pipe is used to absorb and transfer the tailings pellets conveyed by the circulating conveyor belt. The vertical tubes and water absorbent parts in the drying shell are heated by spiral heating tubes in a circulating heating oil tank. The water absorbent parts are composed of an inner ring part, a connecting plate part, an outer ring part and a fin plate part. The interior of the water absorbent parts is evenly distributed with three-dimensional pore channels. The water adsorbed by the inner ring part can be quickly transferred to the outer ring part and the fin plate part by capillary absorption, and then transferred to the outside air through volatilization. In this way, the classified tailings particles can be dried and activated, and stored in grades.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0024] Figure 2 Schematic diagram of the structure of the primary crushing roller in the present invention;

[0025] Figure 3 Schematic diagram of the structure of the counterattack block in the present invention;

[0026] Figure 4 Schematic diagram of the structure of the transverse screening assembly in the present invention;

[0027] Figure 5 It is a schematic structural diagram of the longitudinal crushing component part of the present invention;

[0028] Figure 6 Schematic diagram of the structure of the longitudinal crushing unit in the present invention;

[0029] Figure 7 It is a schematic front view of the longitudinal crushing unit of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the material suction and drying component in the present invention;

[0031] Figure 9 Schematic diagram of the internal structure of the drying shell in the present invention;

[0032] Figure 10 Schematic diagram of the structure of the water absorbing member in the present invention;

[0033] In the accompanying drawings, the reference numerals of the various components are as follows:

[0034] 1-upper box, 2-lower box, 3-feeding port, 4-primary crushing roller, 401-roller body, 402-drive shaft, 403-wear-resistant ring, 404-crushing impact head, 5-impact block, 501-base block, 502-flexible pad, 503-fastener, 504-impact block, 6-throwing roller, 7-transverse screening assembly, 701-movable partition, 702-fixed partition, 703-servo motor, 704-sliding gear, 705-sliding tooth groove, 706-upper screening hole, 707-lower screening hole, 8-longitudinal crushing assembly, 801-aggregate trough, 802-dropping pipe, 803- Longitudinal push rod, 804-push plate, 805-support shaft, 806-rotating joint, 807-positioning shaft, 808-crushing cam, 809-crushing roller, 9-circulating conveyor belt, 10-suction drying assembly, 101-blower, 102-first horizontal pipe, 103-vertical pipe, 104-second horizontal pipe, 105-collecting hopper, 106-suction pipe, 107-drying shell, 108-water absorbing part, 108a-inner ring part, 108b-connecting plate part, 108c-outer ring part, 108d-fin plate part, 109-spiral heating pipe, 110-circulating heating oil tank. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0036] like Figure 1 As shown, this embodiment provides a recycling and processing system for preparing cement active admixtures based on graphite tailings, comprising an upper box 1, a lower box 2, a primary crushing roller 4, an impact block 5, a throwing roller 6, a transverse screening assembly 7, a longitudinal crushing assembly 8, a circulating conveyor belt 9, and a material suction and drying assembly 10. The upper box 1 is arranged at the upper end of the lower box 2, and a feeding port 3 is provided at the upper portion of the upper box 1. The primary crushing roller 4 is installed inside the upper box 1, and a number of impact blocks 5 and a throwing roller 6 are installed around the primary crushing roller 4. The transverse screening assembly 7 is installed between the upper box 1 and the lower box 2, and the longitudinal crushing assembly 8 is installed on the lower box 2 below the transverse screening assembly 7. The circulating conveyor belt 9 is installed on the lower box 2 below the longitudinal crushing assembly 8, and the material suction and drying assembly 10 is installed on the lower box 2 above the circulating conveyor belt 9.

[0037] like Figure 2As shown, the primary crushing roller 4 includes a roller body 401, a drive shaft 402, a wear-resistant ring 403 and a crushing impact head 404. A drive shaft 402 for driving the roller body 401 to rotate is installed at the center of the roller body 401, a wear-resistant ring 403 is installed on the outside of the roller body 401, and a plurality of crushing impact heads 404 are installed along the circumference of the outside of the wear-resistant ring 403.

[0038] like Figure 3 As shown, the counterattack block 5 includes a base block 501, a flexible pad 502, a counterattack block 504 and a fastener 503. The flexible pad 502 and the counterattack block 504 are installed on the outer side of the base block 501 in sequence. The flexible pad 502 and the counterattack block 504 are installed on the base block 501 through the fastener 503. The outer end of the fastener 503 is hidden in the fastening installation groove provided in the counterattack block 504.

[0039] In this embodiment, there are three counterattack blocks 5, which are respectively arranged directly above, above the left and below the left of the primary crushing roller 4. The feeding port 3 is arranged at the upper right of the primary crushing roller 4, and the throwing roller 6 is arranged at the lower right of the primary crushing roller 4.

[0040] like Figure 4 As shown, the transverse screening assembly 7 includes a movable partition 701, a fixed partition 702, a servo motor 703, and a toggle gear 704. The fixed partition 702 is fixed between the upper box 1 and the lower box 2. A number of lower screening holes 707 are installed on the fixed partition 702. The servo motor 703 is installed at the outer end of the fixed partition 702, and the toggle gear 704 is installed at the output end of the servo motor 703. A number of upper screening holes 706 are installed on the movable partition 701. A row of toggle teeth 705 that mesh with the toggle gear 704 are provided on the lower side of the movable partition 701 near the servo motor 703. The right side plate of the upper box 1 is provided with a strip-shaped perforation to facilitate the passage of the movable partition 701. The lower screening holes 707 and the upper screening holes 706 are rectangular through holes of the same specifications.

[0041] like Figure 5-Figure 7As shown, the longitudinal crushing assembly 8 includes a collection trough 801, a drop pipe 802, a longitudinal push rod 803, a push plate 804, a support shaft 805, a rotary joint 806, a positioning shaft 807, crushing teeth 808, and a crushing roller 809. The longitudinal push rod 803, the push plate 804, the support shaft 805, the rotary joint 806, the positioning shaft 807, the crushing teeth 808, and the crushing roller 809 constitute a longitudinal crushing unit. The top of the collection trough 801 is fixed to the underside of the fixed partition 702 and covers all the lower screening holes 707. The drop pipe 802 is installed at the bottom of the collection trough 801. Multiple longitudinal push rods 803 are installed side by side on the rear side panels of the lower box 2. A push plate 804 is mounted on the movable end of each longitudinal push rod 803. Two supporting shafts 805 are mounted side by side on the push plate 804. The outer end of each supporting shaft 805 is connected to a positioning shaft 807 via a rotary joint 806. Multiple positioning sleeves are installed side by side on the inner wall of the front side panels of the lower box 2. The positioning shafts 807 can slide along the inner lumens of the positioning sleeves and always remain in the inner lumens of the positioning sleeves.

[0042] In this embodiment, a plurality of staggered crushing teeth 808 and crushing rollers 809 are mounted on the positioning shaft 807. The spacing between two adjacent crushing teeth 808 on the positioning shaft 807 is equal to the longitudinal length of the rectangular through-hole, and the spacing between two adjacent crushing rollers 809 on the same row of positioning shafts 807 is equal to the transverse width of the rectangular through-hole.

[0043] In this embodiment, the input end of the circulating conveyor belt 9 is located below the drop tube 802, and ribs are provided on both sides of the belt body of the circulating conveyor belt 9.

[0044] like Figures 8-10As shown, the suction drying assembly 10 includes a blower 101, a first horizontal pipe 102, a vertical pipe 103, a second horizontal pipe 104, a branch pipe, a collecting hopper 105, a suction pipe 106, a drying housing 107, a water absorber 108, a spiral heating pipe 109, and a circulating heating oil tank 110. The output end of the blower 101 is connected to the collecting hopper 105 via the first horizontal pipe 102, the vertical pipe 103, the second horizontal pipe 104, and the branch pipe. The input pipe of the branch pipe is connected to the second horizontal pipe 104. Each output branch of the branch pipe is connected to a collecting hopper 105. The number of output branches is equal to the number of classification categories. The branch pipe is equipped with a switching valve for switching the connection between the input and output branches. A drying shell 107 is mounted on the exterior of the vertical tube 103. A spiral heating tube 109 is installed between the drying shell 107 and the vertical tube 103. Both ends of the spiral heating tube 109 pass through the drying shell 107 and communicate with a circulating heating oil tank 110. The circulating heating oil tank 110 is fixed to the outer wall of the left side panel of the lower box 2. The left side panel of the lower box 2 is provided with a circular perforation for the first horizontal tube 102 to pass through. The portion of the vertical tube 103 located within the drying shell 107 is equipped with a water absorbent member 108 for transferring moisture from the tube to the outside of the tube. A circular fan is installed at the bottom end of the drying shell 103 to facilitate blowing air from the water absorbent member 108. A hollow connecting plate is installed at the top of the drying shell 107 to secure the drying shell 107 to the vertical tube 103.

[0045] In this embodiment, the water-absorbing member 108 is composed of an inner ring portion 108a, a connecting plate portion 108b, an outer ring portion 108c, and fin portions 108d. Several connecting plate portions 108b, which extend through the vertical tube 103, are connected between the outer wall of the inner ring portion 108a and the inner wall of the outer ring portion 108c. Several fin portions 108d are evenly distributed on the outer side of the outer ring portion 108c. The inner ring portion 108a, connecting plate portion 108b, outer ring portion 108c, and fin portions 108d of the water-absorbing member 108 are integrally formed from silicon carbide ceramic material. The interior of the water-absorbing member 108 is uniformly distributed with three-dimensional pore channels, which utilize capillary absorption to rapidly transfer moisture absorbed by the inner ring portion 108a to the outer ring portion 108c and fin portions 108d, where it is then volatilized and transferred to the ambient air.

[0046] A specific application of this embodiment is:

[0047] A primary crushing roller 4, an impact block 5 and a throwing roller 6 are provided in the upper box 1. The primary crushing roller 4 is used to crush the graphite tailings. The impact block 5 is used to impact-crush the graphite tailings thrown out by the primary crushing roller 4 during the crushing process. The graphite tailings at the diagonal end of the throwing roller 6 are re-added for crushing. In this way, cyclic crushing can be achieved.

[0048] A transverse screening assembly 7 is installed between the upper box 1 and the lower box 2, and a lateral crushing assembly 8 is installed below the transverse screening assembly 7. The transverse screening assembly 7 can be used to limit and adjust the transverse width of the discharged tailings particles, and the crushing assembly 8 can be used to limit and adjust the longitudinal length of the discharged tailings particles, ultimately achieving the classification of the graphite tailings and achieving graded discharge in a chronological order of gradually increasing particle size. A circulating conveyor belt 9 is used to sequentially guide the graded discharged tailings particles to the suction and drying assembly 10.

[0049] The suction and drying assembly 10 uses the wind generated by the blower 101 to direct the graded tailings pellets conveyed by the circulating conveyor 9 into the corresponding collection hopper 105. The conveying pipeline mainly consists of a first horizontal pipe 102, a vertical pipe 103, and a second horizontal pipe 104. The branch pipe is used to switch the conveying pipeline to the corresponding collection hopper 105 to match the grade. The suction pipe 106 is used to suck and transfer the tailings pellets conveyed by the circulating conveyor 9. The vertical tube 103 and the water absorbing member 108 in the drying shell 107 are heated by the spiral heating tube 109 using the circulating heating oil tank 110. The water absorbing member 108 is composed of an inner ring portion 108a, a connecting plate portion 108b, an outer ring portion 108c and a fin portion 108d. The interior of the water absorbing member 108 is uniformly distributed with three-dimensional pore channels. The water adsorbed by the inner ring portion 108a can be quickly transferred to the outer ring portion 108c and the fin portion 108d by capillary absorption, and then transferred to the outside air through volatilization. In this way, the classified tailings particles can be dried and activated, and stored in a graded manner.

[0050] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A recycling and processing system for preparing cement active admixtures based on graphite tailings, characterized in that: It includes an upper box, a lower box, a primary crushing roller, an impact block, a throwing roller, a transverse screening component, a longitudinal crushing component, a circulating conveyor belt and a suction drying component. The upper box is arranged at the upper end of the lower box, and a feeding port is provided on the upper part of the upper box. The primary crushing roller is installed inside the upper box, and a plurality of impact blocks and a throwing roller are installed around the primary crushing roller. A transverse screening component is installed between the upper box and the lower box, and the longitudinal crushing component is installed on the lower box below the transverse screening component. The circulating conveyor belt is installed on the lower box below the longitudinal crushing component, and the suction drying component is installed on the lower box above the circulating conveyor belt.

2. The recycling and processing system for preparing cement active admixture based on graphite tailings according to claim 1, characterized in that: The primary crushing roller includes a roller body, a drive shaft, a wear-resistant ring and a crushing impact head. A drive shaft for driving the roller body to rotate is installed at the center of the roller body, a wear-resistant ring is installed on the outside of the roller body, and several crushing impact heads are installed on the outside of the wear-resistant ring along the circumferential direction.

3. The recycling and processing system for preparing cement active admixture based on graphite tailings according to claim 1 is characterized in that, The impact block includes a base block, a flexible pad, an impact block and a fastener. The flexible pad and the impact block are sequentially installed on the outer side of the base block, and the flexible pad and the impact block are installed on the base block through the fastener.

4. The recycling and processing system for preparing cement active admixture based on graphite tailings according to claim 1, characterized in that: There are three counterattack blocks in total, which are respectively arranged directly above, above and below the primary crushing roller. The feeding port is arranged above the right side of the primary crushing roller, and the throwing roller is arranged below the right side of the primary crushing roller.

5. The recycling and processing system for preparing cement active admixture based on graphite tailings according to claim 1 is characterized in that, The transverse screening assembly includes a movable partition, a fixed partition, a servo motor and a toggle gear. The fixed partition is fixed between the upper box and the lower box. A number of lower screening holes are installed on the fixed partition. A servo motor is installed at the outer end of the fixed partition. A toggle gear is installed at the output end of the servo motor. A number of upper screening holes are installed on the movable partition. A row of toggle tooth grooves meshing with the toggle gear are provided on the lower side of the movable partition near the servo motor; the right side plate of the upper box is provided with strip-shaped perforations for facilitating the passage of the movable partition, and the lower screening holes and the upper screening holes are rectangular through holes of the same specifications.

6. The recycling and processing system for preparing cement active admixture based on graphite tailings according to claim 5, characterized in that: The longitudinal crushing assembly includes a feed trough, a drop pipe, a longitudinal push rod, a push plate, a support shaft, a rotary joint, a positioning shaft, crushing cams and a crushing roller. The top of the feed trough is fixed to the lower side of the fixed partition and covers all the lower screening holes. The bottom end of the feed trough is equipped with a drop pipe. There are multiple longitudinal push rods and they are installed side by side on the rear plate of the lower box. The movable end of the longitudinal push rod is equipped with a push plate. Two support shafts are installed in parallel on the push plate. The outer end of each support shaft is connected to a positioning shaft via a rotary joint. The inner wall of the front side plate of the lower box is equipped with multiple positioning sleeves that are sleeved on the outside of the corresponding positioning shafts. A number of staggered crushing cams and crushing rollers are installed on the positioning shaft.

7. The recycling and processing system for preparing cement active admixture based on graphite tailings according to claim 6 is characterized in that, The spacing between two adjacent crushing teeth on the positioning shaft is equal to the longitudinal length of the rectangular through hole, and the spacing between two adjacent crushing rollers on the positioning shaft in the same row is equal to the transverse width of the rectangular through hole.

8. The recycling and processing system for preparing cement active admixture based on graphite tailings according to claim 6 is characterized in that, The input end of the circulating conveyor belt is located below the drop tube, and ribs are provided on both sides of the belt body of the circulating conveyor belt.

9. The recycling and processing system for preparing cement active admixture based on graphite tailings according to claim 1, characterized in that: The suction drying assembly includes a blower, a first horizontal pipe, a vertical pipe, a second horizontal pipe, a branch pipe, a collecting hopper, a suction pipe, a drying shell, a water absorption part, a spiral heating pipe and a circulating heating oil tank. The output end of the blower is connected to the collecting hopper in sequence through the first horizontal pipe, the vertical pipe, the second horizontal pipe and the branch pipe. The drying shell is installed on the outside of the vertical pipe. A spiral heating pipe is installed between the drying shell and the vertical pipe. Both ends of the spiral heating pipe pass through the drying shell and are connected to the circulating heating oil tank. The circulating heating oil tank is fixed to the outer wall of the left side plate of the lower box. The left side plate of the lower box is provided with a circular through-hole for facilitating the passage of the first horizontal pipe. The pipe portion of the vertical pipe located in the drying shell is provided with a water absorption part for transferring moisture in the pipe to the outside of the pipe. The bottom end of the drying shell is provided with a ring fan for blowing air to the water absorption part. The top of the drying shell is provided with a hollow connecting plate for fixing its position with the vertical pipe.

10. The recycling and processing system for preparing cement active admixture based on graphite tailings according to claim 1, characterized in that: The water-absorbing component is composed of an inner ring portion, a connecting plate portion, an outer ring portion and a fin portion. Several connecting plate portions that penetrate the vertical tubes are connected between the outer wall of the inner ring portion and the inner wall of the outer ring portion, and several fin portions are evenly distributed on the outside of the outer ring portion. The inner ring portion, connecting plate portion, outer ring portion and fin portion of the water-absorbing component are made of silicon carbide ceramic material as a whole. The interior of the water-absorbing component is evenly distributed with three-dimensional pore channels, which can use capillary water absorption to quickly transfer the moisture adsorbed by the inner ring portion to the outer ring portion and the fin portion, and then transfer it to the outside air through volatilization.

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