Production processing system and method for efficient comprehensive utilization of fully weathered materials

Abstract

The present application belongs to the technical field of comprehensive utilization of full weathered material, and particularly relates to a production and treatment system and method for efficient comprehensive utilization of full weathered material, which comprises a screening and crushing system, a water washing system and a fine sand recovery system; the screening and crushing system comprises a rod bar feeder, an e-type crusher, a circular vibrating screen, an adjusting bin, a pair of roller machines and a closed-circuit linear screen; the water washing system comprises a first-stage spiral sand washer, a second-stage spiral sand washer, a first-stage wheel-bucket sand washer, a second-stage wheel-bucket sand washer and a first-stage linear dehydration screen; and the fine sand recovery system comprises a first-stage recovery tank, a second-stage recovery tank, a first-stage cyclone group, a second-stage cyclone group, a third-stage cyclone group and a second-stage linear dehydration screen; the present application adopts water flushing screening, closed-circuit circulation of the pair of roller machines, double-stage spiral sand washing, double-stage wheel-bucket sand washing, a cyclone group and a linear dehydration screen which are matched with each other, realizes low-cost operation of the water washing sand system for full weathered material production, and has the advantages of high efficiency and high quality and wide applicability.

Description

Technical Field

[0001] This invention belongs to the field of comprehensive utilization technology of fully weathered materials, and particularly relates to a production and processing system and method for the efficient comprehensive utilization of fully weathered materials. Background Technology

[0002] The disposal of fully weathered surface material in green mine construction urgently needs to be addressed. As a crucial resource in green mines, directly dumping fully weathered material as waste requires vast amounts of land, leading to both resource waste and land degradation. Comprehensive utilization of fully weathered material to produce washed sand is a commonly used disposal method. Through crushing, screening, washing, and dewatering, the mud and fine particles in the raw material are removed, resulting in washed sand with higher economic value, turning waste into treasure. Currently, different mines have different disposal methods for fully weathered material. The composition of the raw material varies, leading to different production processes and procedures for producing washed sand, resulting in varying production costs and product quality. The moisture content, mud content, and flocculant residue of the finished washed sand directly affect production costs and quality.

[0003] This invention designs a production and processing system and method for the efficient and comprehensive utilization of fully weathered materials to solve the above problems. Summary of the Invention

[0004] To achieve the above objectives, the present invention employs the following technical solutions: A production and processing system for the efficient and comprehensive utilization of fully weathered materials includes: a screening and crushing system, a washing system, a fine sand recovery system, a receiving bin, a finished sand bin, a return bin, and a waste bin; The screening and crushing system includes a bar feeder, a jaw crusher, a circular vibrating screen, a regulating silo, a roller mill, and a closed-circuit linear screen. The bar feeder can transport large-diameter sand and gravel discharged from the receiving silo to the jaw crusher. The circular vibrating screen receives small-diameter sand and gravel output from the receiving silo, the bar feeder, and the jaw crusher. The circular vibrating screen divides the sand and gravel into three categories according to particle size and transports them to the return silo, the regulating silo, and the washing system, respectively. The regulating silo, the roller mill, and the closed-circuit linear screen form a closed-circuit crushing and screening cycle. The closed-circuit linear screen transports sand and gravel that meet the particle size requirements to the washing system. The washing system includes a first-stage spiral sand washer, a second-stage spiral sand washer, a first-stage wheel sand washer, a second-stage wheel sand washer, and a first-stage linear dewatering screen. The first-stage spiral sand washer receives sand and gravel output from the circular vibrating screen and the closed-circuit linear screen. The first-stage spiral sand washer, the second-stage spiral sand washer, the first-stage wheel sand washer, and the second-stage wheel sand washer are used for sand washing operations. The first-stage linear dewatering screen is used to dewater the sand and gravel washed by the second-stage wheel sand washer. The fine sand recovery system includes a primary recovery tank, a secondary recovery tank, a first-stage cyclone separator, a second-stage cyclone separator, a third-stage cyclone separator, a second-stage linear dewatering screen, a third-stage linear dewatering screen, and a third-stage wheel sand washer. The primary recovery tank and the first-stage cyclone separator are used to recover fine sand from the production wastewater of the first-stage and second-stage spiral sand washer. The secondary recovery tank and the second-stage cyclone separator are used to recover fine sand from the production wastewater of the first-stage and second-stage wheel sand washer and the first-stage linear dewatering screen. The third-stage wheel sand washer is used to wash the fine sand recovered by the first-stage cyclone separator. The second-stage linear dewatering screen is used to dewater the sand and gravel washed by the second-stage cyclone separator and the third-stage wheel sand washer. The third-stage cyclone separator and the third-stage linear dewatering screen are used to recover and dewater the fine sand from the production wastewater of the second-stage linear dewatering screen and the third-stage wheel sand washer. The fine sand output from the first-stage and second-stage linear dewatering screens is transported to the finished sand bin. If the fine sand output from the second-stage cyclone separator meets the quality requirements, it is transported to the second-stage linear dewatering screen. If the fine sand output from the second-stage cyclone separator does not meet the quality requirements, it is transported to the waste bin. If the fine sand output from the third-stage linear dewatering screen meets the quality requirements, it is transported to the finished sand bin. If the fine sand output from the third-stage linear dewatering screen does not meet the quality requirements, it is transported to the waste bin.

[0005] As a preferred option, the system includes a clear water tank and a recycled water tank. The water used for the 2-stage wheel sand washing machine, 3-stage wheel sand washing machine, 1-stage linear dewatering screen, 2-stage linear dewatering screen and 3-stage linear dewatering screen is supplied by the clear water tank, while the water used for the circular vibrating screen, 1-stage spiral sand washing machine, 2-stage spiral sand washing machine and 1-stage wheel sand washing machine is supplied by the recycled water tank.

[0006] As a preferred solution, a wastewater treatment system is included. The wastewater treatment system supplies water to the recycled water tank. The wastewater from the first-stage spiral sand washer and the second-stage spiral sand washer will enter the wastewater treatment system sequentially through the first-stage recovery tank and the first-stage cyclone group. The production wastewater from the first-stage wheel sand washer, the second-stage wheel sand washer, and the first-stage linear dewatering screen will enter the wastewater treatment system sequentially through the second-stage recovery tank and the second-stage cyclone group. The production wastewater from the second-stage linear dewatering screen and the third-stage wheel sand washer will enter the wastewater treatment system after passing through the third-stage cyclone group. The production wastewater from the third-stage linear dewatering screen will be directly fed into the wastewater treatment system.

[0007] As a preferred option, a bar screen is installed inside the receiving silo, which divides the inside of the receiving silo into a small-diameter silo and a large-diameter silo. The small-diameter silo stores sand and gravel smaller than 30mm, while the large-diameter silo stores sand and gravel larger than or equal to 30mm.

[0008] As a preferred embodiment, the circular vibrating screen has two layers of screens, with the upper screen having a mesh size of 30mm and the lower screen having a mesh size of 3mm, and the closed-circuit linear screen having a mesh size of 4.75mm.

[0009] A production and processing method for the efficient and comprehensive utilization of fully weathered materials includes the following steps: Step 1: Large-diameter sand and gravel discharged from the receiving hopper are screened by the bar feeder. Large-diameter sand and gravel with a diameter greater than or equal to 30mm are conveyed by the bar feeder to the jaw crusher for crushing. Small-diameter sand and gravel with a diameter less than 30mm discharged from the receiving hopper, bar feeder, and jaw crusher are conveyed to the circular vibrating screen. Step 2: The circular vibrating screen washes the sand and gravel with high pressure and classifies them into three particle sizes: larger than 30mm, 30-3mm, and smaller than 3mm. The sand and gravel larger than 30mm is transported to the return hopper, while the sand and gravel smaller than 3mm is processed by the regulating hopper, roller mill, and closed-circuit linear screen for recycling and crushing. The closed-circuit linear screen transports the sand and gravel smaller than 4.75mm to the washing system, and the sand and gravel smaller than 3mm is also transported to the washing system. Step 3: Based on the mud content of the sand and gravel, the sand and gravel are washed by the first-stage spiral sand washer, the second-stage spiral sand washer, the first-stage wheel sand washer, and the second-stage wheel sand washer in the water washing system. Finally, the sand and gravel washed by the second-stage wheel sand washer are dewatered by the first-stage linear dewatering screen and then enter the finished product silo. Step 4: Wastewater from the first-stage spiral sand washer and the second-stage spiral sand washer enters the first-stage recovery tank for collection and recycling, and is then pumped to the first-stage cyclone separator for fine sand recovery. Wastewater from the first-stage and second-stage wheel sand washer, as well as wastewater from the first-stage linear dewatering screen, enters the second-stage recovery tank for collection and recycling, and is then pumped to the second-stage cyclone separator for fine sand recovery. Wastewater from the third-stage wheel sand washer and the second-stage linear dewatering screen enters the third-stage cyclone separator for fine sand recovery. As a preferred option, step three involves three sand washing steps based on the mud content of the sand and gravel. The first method involves sequentially performing water washing treatment using a first-stage spiral sand washing machine, a second-stage spiral sand washing machine, a first-stage wheel sand washing machine, and a second-stage wheel sand washing machine. The second method involves sequentially washing the sand using a first-stage spiral sand washer, a first-stage wheel sand washer, and a second-stage wheel sand washer. The third method involves sequentially washing the sand using a first-stage spiral sand washer and a second-stage wheel sand washer.

[0010] As a preferred option, in step four, the fine sand recovered by the first-stage cyclone group is the first-stage recovered sand. After the first-stage cyclone group recovers the fine sand, the wastewater generated enters the downstream wastewater treatment system for treatment. The recovered fine sand enters the third-stage wheel bucket sand washing machine for sand washing, and then enters the finished sand bin after being dewatered by the second-stage linear dewatering screen.

[0011] As a preferred option, the fine sand recovered by the two-stage cyclone separator is the second-stage recovered sand. After the fine sand is recovered by the two-stage cyclone separator, the wastewater generated enters the downstream wastewater treatment system for treatment. The fine sand recovered by the three-stage cyclone separator is the third-stage recovered sand. After the fine sand is recovered by the three-stage cyclone separator, the wastewater generated enters the downstream wastewater treatment system for treatment.

[0012] As a preferred option, if the quality of the grade 2 and grade 3 recycled sand is good, the grade 2 recycled sand is dewatered through a grade 2 linear dewatering screen and then enters the finished sand bin, and the grade 3 recycled sand is dewatered through a grade 3 linear dewatering screen and then enters the finished sand bin. If the quality of the grade 2 and grade 3 recycled sand is poor, the grade 2 recycled sand is directly transported to the waste bin, and the grade 3 recycled sand is dewatered through a grade 3 linear dewatering screen without water and then enters the waste bin.

[0013] Compared with existing technologies, the advantages of this invention are: 1. This invention employs a water flushing and screening system, a closed-loop circulation system for roller mills, a double-stage spiral sand washing system, a double-stage bucket wheel sand washing system, a cyclone group with mutual cooperation between the two groups, and a linear dewatering screen to achieve low-cost operation, high efficiency and high quality of the fully weathered material production water-washed sand system, which has the advantages of wide applicability.

[0014] 2. The roller mill crushing and closed-circuit linear screen screening process of the present invention not only solves the problem of undisintegrated mud clumps after screening and washing, but also allows for repeated crushing of some sand and gravel with low crushing values, thereby improving product quality and achieving efficient utilization of fully weathered materials.

[0015] 3. Based on the mud content of the material, the present invention allows for flexible selection of washing steps in the washing system, and flexible configuration of washing combinations of stage 1 spiral sand washing machine, stage 2 spiral sand washing machine, stage 1 wheel bucket sand washing machine, and stage 2 wheel bucket sand washing machine, thereby improving the adaptability of the system and reducing production costs.

[0016] 4. The sand washing stage of the spiral sand washer of this invention is set before the fine sand stage of the wheel sand washer. Utilizing the kneading, stirring, and pushing capabilities of the rotating blades, it is suitable for the initial washing stage of fully weathered materials with high mud content, thereby improving the system's mud removal and sand washing effect. 5. This invention sets up a three-level recycling system. The fine sand recycled by the first-level cyclone group is the first-level recycled sand, the fine sand recycled by the second-level cyclone group is the second-level recycled sand, and the fine sand recycled by the third-level cyclone group is the third-level recycled sand. Different recycling methods are used for different levels of recycled sand to achieve efficient utilization of fully weathered material and reduce resource waste.

[0017] 6. In this invention, the washing and dewatering processes before the sand enters the finished sand bin use clean water that has not undergone wastewater treatment. This avoids the sand from clumping together, reduces the residue of flocculant, and improves product quality.

[0018] 7. In this invention, all wastewater generated in the sand washing process is recycled through fine sand and then enters the wastewater treatment system, reducing the content of fine particles in the production wastewater. This reduces the amount of flocculant used in the wastewater treatment system and also reduces the wear of fine particles on the downstream filter press equipment. Attached Figure Description

[0019] Figure 1 This is a flowchart illustrating the present invention.

[0020] Figure 2 This is a schematic diagram of the flow direction of sand and gravel materials according to the present invention.

[0021] Figure 3 This is a schematic diagram of the water flow direction according to the present invention.

[0022] Figure 4 This is a schematic diagram of the flow direction of the recycled water in this invention.

[0023] Figure 5 This is a schematic diagram of the wastewater flow direction according to the present invention. Detailed Implementation

[0024] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following embodiments and drawings are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0025] A production and processing system for the efficient and comprehensive utilization of fully weathered materials, such as Figures 1 to 5 As shown, it includes: a screening and crushing system, a washing system, a fine sand recovery system, a receiving silo, a finished sand silo, a return silo, and a waste silo; The screening and crushing system includes a bar feeder, a jaw crusher, a circular vibrating screen, a regulating silo, a roller mill, and a closed-circuit linear screen. The bar feeder can transport large-diameter sand and gravel discharged from the receiving silo to the jaw crusher. The circular vibrating screen receives small-diameter sand and gravel output from the receiving silo, the bar feeder, and the jaw crusher. The circular vibrating screen divides the sand and gravel into three categories according to particle size and transports them to the return silo, the regulating silo, and the washing system, respectively. The regulating silo, the roller mill, and the closed-circuit linear screen form a closed-circuit crushing and screening cycle. The closed-circuit linear screen transports sand and gravel that meet the particle size requirements to the washing system. The washing system includes a first-stage spiral sand washer, a second-stage spiral sand washer, a first-stage wheel sand washer, a second-stage wheel sand washer, and a first-stage linear dewatering screen. The first-stage spiral sand washer receives sand and gravel output from the circular vibrating screen and the closed-circuit linear screen. The first-stage spiral sand washer, the second-stage spiral sand washer, the first-stage wheel sand washer, and the second-stage wheel sand washer are used for sand washing operations. The first-stage linear dewatering screen is used to dewater the sand and gravel washed by the second-stage wheel sand washer. The fine sand recovery system includes a primary recovery tank, a secondary recovery tank, a first-stage cyclone separator, a second-stage cyclone separator, a third-stage cyclone separator, a second-stage linear dewatering screen, a third-stage linear dewatering screen, and a third-stage wheel sand washer. The primary recovery tank and the first-stage cyclone separator are used to recover fine sand from the production wastewater of the first-stage and second-stage spiral sand washer. The secondary recovery tank and the second-stage cyclone separator are used to recover fine sand from the production wastewater of the first-stage and second-stage wheel sand washer and the first-stage linear dewatering screen. The third-stage wheel sand washer is used to wash the fine sand recovered by the first-stage cyclone separator. The second-stage linear dewatering screen is used to dewater the sand and gravel washed by the second-stage cyclone separator and the third-stage wheel sand washer. The third-stage cyclone separator and the third-stage linear dewatering screen are used to recover and dewater the fine sand from the production wastewater of the second-stage linear dewatering screen and the third-stage wheel sand washer. The fine sand output from the first-stage and second-stage linear dewatering screens is transported to the finished sand bin. If the fine sand output from the second-stage cyclone separator meets the quality requirements, it is transported to the second-stage linear dewatering screen. If the fine sand output from the second-stage cyclone separator does not meet the quality requirements, it is transported to the waste bin. If the fine sand output from the third-stage linear dewatering screen meets the quality requirements, it is transported to the finished sand bin. If the fine sand output from the third-stage linear dewatering screen does not meet the quality requirements, it is transported to the waste bin.

[0026] It also includes a control center with PLC control function. The control center is used to realize the linkage between equipment. The circular vibrating screen, roller mill, closed-circuit linear screen, various spiral sand washing machines, various wheel bucket sand washing machines, various linear dewatering screens, and various cyclone groups are all controlled by the control center. In addition, the water washing system controls the opening of the chute distribution channel according to the mud content and cleanliness of the sand and gravel materials through the control center, thereby realizing the selection of the number of sand washing stages and controlling the fine sand steps. The transportation of materials between equipment is mostly realized by belt conveyors.

[0027] like Figure 3 and Figure 4 As shown, the system includes a clear water tank and a recycled water tank. The water used by the 2nd-stage wheel sand washing machine, the 3rd-stage wheel sand washing machine, the 1st-stage linear dewatering screen, the 2nd-stage linear dewatering screen, and the 3rd-stage linear dewatering screen is supplied by the clear water tank. The water used by the circular vibrating screen, the 1st-stage spiral sand washing machine, the 2nd-stage spiral sand washing machine, and the 1st-stage wheel sand washing machine is supplied by the recycled water tank.

[0028] like Figure 5 As shown, the system includes a wastewater treatment system. The treated water is supplied to the reuse water tank. Wastewater from the first-stage spiral sand washer and the second-stage spiral sand washer enters the wastewater treatment system sequentially through the first-stage recovery tank and the first-stage cyclone separator. Wastewater from the first-stage wheel sand washer, the second-stage wheel sand washer, and the first-stage linear dewatering screen enters the wastewater treatment system sequentially through the second-stage recovery tank and the second-stage cyclone separator. Wastewater from the second-stage linear dewatering screen and the third-stage wheel sand washer enters the wastewater treatment system after passing through the third-stage cyclone separator. Wastewater from the third-stage linear dewatering screen is directly fed into the wastewater treatment system.

[0029] The receiving hopper is equipped with a bar screen, which divides the hopper into a small-diameter hopper and a large-diameter hopper. The small-diameter hopper stores sand and gravel smaller than 30mm, while the large-diameter hopper stores sand and gravel larger than or equal to 30mm. The circular vibrating screen has two layers of screens: the upper screen has a 30mm aperture, and the lower screen has a 3mm aperture. The closed-circuit linear screen has a 4.75mm aperture. A level gauge is installed in the receiving hopper to achieve linkage control between the front-end material inventory and the equipment, thereby saving energy, reducing consumption, and lowering operating costs.

[0030] A working method for a production and processing system for the efficient and comprehensive utilization of fully weathered materials includes the following steps: Step 1: Large-diameter sand and gravel discharged from the receiving hopper are screened by the bar feeder. Large-diameter sand and gravel with a diameter greater than or equal to 30mm are conveyed by the bar feeder to the jaw crusher for crushing. Small-diameter sand and gravel with a diameter less than 30mm discharged from the receiving hopper, bar feeder, and jaw crusher are conveyed to the circular vibrating screen. Step 2: The circular vibrating screen washes the sand and gravel with high pressure and classifies them into three particle sizes: larger than 30mm, 30-3mm, and smaller than 3mm. The sand and gravel larger than 30mm is transported to the return hopper, while the sand and gravel smaller than 3mm is processed by the regulating hopper, roller mill, and closed-circuit linear screen for recycling and crushing. The closed-circuit linear screen transports the sand and gravel smaller than 4.75mm to the washing system, and the sand and gravel smaller than 3mm is also transported to the washing system. The sand and gravel returned to the silo are transported back to the receiving silo by loaders and dump trucks for crushing and screening again. Step 3: Based on the mud content of the sand and gravel, the sand and gravel are washed by the first-stage spiral sand washer, the second-stage spiral sand washer, the first-stage wheel sand washer, and the second-stage wheel sand washer in the water washing system. Finally, the sand and gravel washed by the second-stage wheel sand washer are dewatered by the first-stage linear dewatering screen and then enter the finished product silo. Step 4: The production wastewater from the first-stage spiral sand washer and the second-stage spiral sand washer enters the first-stage recovery tank for collection and recycling, and is then pumped to the first-stage cyclone group for fine sand recovery. The production wastewater from the first-stage wheel sand washer and the second-stage wheel sand washer, as well as the wastewater after dewatering by the first-stage linear dewatering screen, enters the second-stage recovery tank for collection and recycling, and is then pumped to the second-stage cyclone group for fine sand recovery. The production wastewater from the third-stage wheel sand washer and the second-stage linear dewatering screen enters the third-stage cyclone group for fine sand recovery.

[0031] In step three, the sand washing process is divided into three steps based on the mud content of the sand and gravel. The first method involves sequentially performing water washing treatment using a first-stage spiral sand washing machine, a second-stage spiral sand washing machine, a first-stage wheel sand washing machine, and a second-stage wheel sand washing machine. The second method involves sequentially washing the sand using a first-stage spiral sand washer, a first-stage wheel sand washer, and a second-stage wheel sand washer. The third method involves sequentially washing the sand using a first-stage spiral sand washer and a second-stage wheel sand washer.

[0032] In step four, the fine sand recovered by the first-stage cyclone group is the first-stage recovered sand. After the first-stage cyclone group recovers the fine sand, the wastewater generated enters the downstream wastewater treatment system for treatment. The recovered fine sand enters the third-stage wheel bucket sand washing machine for sand washing, and then enters the finished sand bin after being dewatered by the second-stage linear dewatering screen.

[0033] The fine sand recovered by the two-stage cyclone separator is the second-stage recovered sand. After the fine sand is recovered by the two-stage cyclone separator, the wastewater generated is sent to the downstream wastewater treatment system for treatment. The fine sand recovered by the three-stage cyclone separator is the third-stage recovered sand. After the fine sand is recovered by the three-stage cyclone separator, the wastewater generated is sent to the downstream wastewater treatment system for treatment.

[0034] If the quality of the grade 2 and grade 3 recycled sand is good, the grade 2 recycled sand will be dewatered through a grade 2 linear dewatering screen and then enter the finished sand bin, and the grade 3 recycled sand will be dewatered through a grade 3 linear dewatering screen and then enter the finished sand bin. If the quality of the grade 2 and grade 3 recycled sand is poor, the grade 2 recycled sand will be directly transported to the waste bin, and the grade 3 recycled sand will be dewatered through a grade 3 linear dewatering screen without water and then enter the waste bin.

[0035] In the above process, all finished sand is rinsed with clean water from an untreated clean water tank before entering the storage facility to reduce flocculant residue and improve product quality. All production wastewater is treated by first-stage, second-stage, and third-stage cyclone separators to recover fine sand before entering the wastewater treatment system. This maximizes the value of the fully weathered material resources while reducing the content of fine particles in the wastewater, extending the service life of the filter press equipment in the downstream wastewater treatment system, and reducing operating costs.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A production and processing system for the efficient and comprehensive utilization of fully weathered materials, characterized in that, include: Screening and crushing system, washing system, fine sand recovery system, receiving bin, finished sand bin, return bin, and waste bin; The screening and crushing system includes a bar feeder, a jaw crusher, a circular vibrating screen, a regulating silo, a roller mill, and a closed-circuit linear screen. The bar feeder can transport large-diameter sand and gravel discharged from the receiving silo to the jaw crusher. The circular vibrating screen receives small-diameter sand and gravel output from the receiving silo, the bar feeder, and the jaw crusher. The circular vibrating screen divides the sand and gravel into three categories according to particle size and transports them to the return silo, the regulating silo, and the washing system, respectively. The regulating silo, the roller mill, and the closed-circuit linear screen form a closed-circuit crushing and screening cycle. The closed-circuit linear screen transports sand and gravel that meet the particle size requirements to the washing system. The washing system includes a first-stage spiral sand washer, a second-stage spiral sand washer, a first-stage wheel sand washer, a second-stage wheel sand washer, and a first-stage linear dewatering screen. The first-stage spiral sand washer receives sand and gravel output from the circular vibrating screen and the closed-circuit linear screen. The first-stage spiral sand washer, the second-stage spiral sand washer, the first-stage wheel sand washer, and the second-stage wheel sand washer are used for sand washing operations. The first-stage linear dewatering screen is used to dewater the sand and gravel washed by the second-stage wheel sand washer. The fine sand recovery system includes a primary recovery tank, a secondary recovery tank, a first-stage cyclone separator, a second-stage cyclone separator, a third-stage cyclone separator, a second-stage linear dewatering screen, a third-stage linear dewatering screen, and a third-stage wheel sand washer. The primary recovery tank and the first-stage cyclone separator are used to recover fine sand from the production wastewater of the first-stage and second-stage spiral sand washer. The secondary recovery tank and the second-stage cyclone separator are used to recover fine sand from the production wastewater of the first-stage and second-stage wheel sand washer and the first-stage linear dewatering screen. The third-stage wheel sand washer is used to wash the fine sand recovered by the first-stage cyclone separator. The second-stage linear dewatering screen is used to dewater the sand and gravel washed by the second-stage cyclone separator and the third-stage wheel sand washer. The third-stage cyclone separator and the third-stage linear dewatering screen are used to recover and dewater the fine sand from the production wastewater of the second-stage linear dewatering screen and the third-stage wheel sand washer. The fine sand output from the first-stage and second-stage linear dewatering screens is transported to the finished sand bin. If the fine sand output from the second-stage cyclone separator meets the quality requirements, it is transported to the second-stage linear dewatering screen. If the fine sand output from the second-stage cyclone separator does not meet the quality requirements, it is transported to the waste bin. If the fine sand output from the third-stage linear dewatering screen meets the quality requirements, it is transported to the finished sand bin. If the fine sand output from the third-stage linear dewatering screen does not meet the quality requirements, it is transported to the waste bin.

2. The production and processing system for the efficient comprehensive utilization of fully weathered materials according to claim 1, characterized in that: It includes a clear water tank and a recycled water tank. The water used by the 2nd-stage wheel bucket sand washing machine, the 3rd-stage wheel bucket sand washing machine, the 1st-stage linear dewatering screen, the 2nd-stage linear dewatering screen, and the 3rd-stage linear dewatering screen is supplied by the clear water tank. The water used by the circular vibrating screen, the 1st-stage spiral sand washing machine, the 2nd-stage spiral sand washing machine, and the 1st-stage wheel bucket sand washing machine is supplied by the recycled water tank.

3. The production and processing system for the efficient comprehensive utilization of fully weathered materials according to claim 2, characterized in that: The system includes a wastewater treatment system, which is supplied by a recycled water tank. Wastewater from the first-stage spiral sand washer and the second-stage spiral sand washer will sequentially enter the wastewater treatment system through a first-stage recovery tank and a first-stage cyclone separator. Wastewater from the first-stage wheel sand washer, the second-stage wheel sand washer, and the first-stage linear dewatering screen will sequentially enter the wastewater treatment system through a second-stage recovery tank and a second-stage cyclone separator. Wastewater from the second-stage linear dewatering screen and the third-stage wheel sand washer will enter the wastewater treatment system after passing through a third-stage cyclone separator. Wastewater from the third-stage linear dewatering screen will be directly fed into the wastewater treatment system.

4. The production and processing system for the efficient comprehensive utilization of fully weathered materials according to claim 1, characterized in that: The receiving silo is equipped with a grate screen, which divides the inside of the receiving silo into a small-diameter silo and a large-diameter silo. The small-diameter silo stores sand and gravel smaller than 30mm, while the large-diameter silo stores sand and gravel larger than or equal to 30mm.

5. The production and processing system for the efficient comprehensive utilization of fully weathered materials according to claim 4, characterized in that: The circular vibrating screen has two layers of screens, with the upper screen having a mesh size of 30mm and the lower screen having a mesh size of 3mm. The closed-circuit linear screen has a mesh size of 4.75mm.

6. The working method of the production and processing system for the efficient comprehensive utilization of fully weathered materials according to claim 1, characterized in that, Includes the following steps: Step 1: Large-diameter sand and gravel discharged from the receiving hopper are screened by the bar feeder. Large-diameter sand and gravel with a diameter greater than or equal to 30mm are conveyed by the bar feeder to the jaw crusher for crushing. Small-diameter sand and gravel with a diameter less than 30mm discharged from the receiving hopper, bar feeder, and jaw crusher are conveyed to the circular vibrating screen. Step 2: The circular vibrating screen washes the sand and gravel with high pressure and classifies them into three particle sizes: larger than 30mm, 30-3mm, and smaller than 3mm. The sand and gravel larger than 30mm is transported to the return hopper, while the sand and gravel smaller than 3mm is processed by the regulating hopper, roller mill, and closed-circuit linear screen for recycling and crushing. The closed-circuit linear screen transports the sand and gravel smaller than 4.75mm to the washing system, and the sand and gravel smaller than 3mm is also transported to the washing system. Step 3: Based on the mud content of the sand and gravel, the sand and gravel are washed by the first-stage spiral sand washer, the second-stage spiral sand washer, the first-stage wheel sand washer, and the second-stage wheel sand washer in the water washing system. Finally, the sand and gravel washed by the second-stage wheel sand washer are dewatered by the first-stage linear dewatering screen and then enter the finished product silo. Step 4: The production wastewater from the first-stage spiral sand washer and the second-stage spiral sand washer enters the first-stage recovery tank for collection and recycling, and is then pumped to the first-stage cyclone group for fine sand recovery. The production wastewater from the first-stage wheel sand washer and the second-stage wheel sand washer, as well as the wastewater after dewatering by the first-stage linear dewatering screen, enters the second-stage recovery tank for collection and recycling, and is then pumped to the second-stage cyclone group for fine sand recovery. The production wastewater from the third-stage wheel sand washer and the second-stage linear dewatering screen enters the third-stage cyclone group for fine sand recovery.

7. The production and processing method for the efficient comprehensive utilization of fully weathered materials according to claim 6, characterized in that: In step three, the sand washing process is divided into three steps based on the mud content of the sand and gravel. The first method involves sequentially performing water washing treatment using a first-stage spiral sand washing machine, a second-stage spiral sand washing machine, a first-stage wheel sand washing machine, and a second-stage wheel sand washing machine. The second method involves sequentially washing the sand using a first-stage spiral sand washer, a first-stage wheel sand washer, and a second-stage wheel sand washer. The third method involves sequentially washing the sand using a first-stage spiral sand washer and a second-stage wheel sand washer.

8. The production and processing method for the efficient comprehensive utilization of fully weathered materials according to claim 6, characterized in that: In step four, the fine sand recovered by the first-stage cyclone group is the first-stage recovered sand. After the first-stage cyclone group recovers the fine sand, the wastewater generated enters the downstream wastewater treatment system for treatment. The recovered fine sand enters the third-stage wheel bucket sand washing machine for sand washing, and then enters the finished sand bin after being dewatered by the second-stage linear dewatering screen.

9. The production and processing method for the efficient and comprehensive utilization of fully weathered materials according to claim 8, characterized in that: The fine sand recovered by the second-stage cyclone separator is second-stage recovered sand. After the second-stage cyclone separator recovers the fine sand, the wastewater generated enters the downstream wastewater treatment system for treatment. The fine sand recovered by the third-stage cyclone separator is third-stage recovered sand. After the third-stage cyclone separator recovers the fine sand, the wastewater generated enters the downstream wastewater treatment system for treatment.

10. The production and processing method for the efficient comprehensive utilization of fully weathered materials according to claim 9, characterized in that: If the quality of the grade 2 and grade 3 recycled sand is good, the grade 2 recycled sand will be dewatered through a grade 2 linear dewatering screen and then enter the finished sand bin, and the grade 3 recycled sand will be dewatered through a grade 3 linear dewatering screen and then enter the finished sand bin. If the quality of the grade 2 and grade 3 recycled sand is poor, the grade 2 recycled sand will be directly transported to the waste bin, and the grade 3 recycled sand will be dewatered through a grade 3 linear dewatering screen without water and then enter the waste bin.

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