Construction waste recycled aggregate pretreatment system

Abstract

The utility model provides a construction waste recycled aggregate pretreatment system. The construction waste recycled aggregate pretreatment system comprises a crushing and screening all-in-one machine, a winnowing dust collector and a cleaning and iron removing all-in-one machine. The crushing and screening all-in-one machine is composed of a machine box, an impact crusher, a screening conveying belt and a vibration hydraulic rod, an intelligent controller is arranged in the impact crusher, and the opening angle of a movable impact wall can be remotely adjusted so as to adapt to different material characteristics. The screening conveying belt adopts a double-layer design, the upper-layer conveying belt is provided with rectangular hollows, and the lower-layer conveying belt is a common belt, so that materials with different granularities are separated. The winnowing dust collector is provided with a light article interceptor, so that light impurities and dust are effectively separated. The cleaning and iron removing all-in-one machine removes metal impurities and dirt through a high-strength magnet and a high-pressure water gun head. The system has the characteristics of efficient crushing and screening, intelligent adjustment, efficient dust removal, light substance separation and thorough cleaning and iron removal, and the production efficiency and the product quality of the construction waste recycled aggregate are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of construction waste treatment technology, specifically a pretreatment system for recycled aggregates from construction waste. Background Technology

[0002] In recent years, the recycling of construction waste has gradually gained attention. Among them, recycled aggregates from construction waste, as an important recycled resource, have broad market prospects and environmental benefits.

[0003] However, construction waste has a complex composition, containing large amounts of concrete, bricks, wood, plastics, metals, and other materials, making direct utilization difficult. To improve the quality and resource utilization rate of recycled aggregates from construction waste, effective pretreatment is necessary. Existing sorting equipment mostly uses single magnetic or air separation methods, which are insufficient to completely separate impurities such as metals and plastics from construction waste, resulting in recycled aggregates containing a significant amount of foreign matter, affecting their performance and application range. Traditional crushing equipment often has fixed parameter settings, unable to be adjusted according to the specific characteristics of construction waste, leading to uneven aggregate particle size after crushing, making it difficult to meet the standards for subsequent processing and use. Existing impurity removal equipment relies heavily on physical methods, which are ineffective at removing fine impurities, affecting the purity and quality of recycled aggregates. Existing pretreatment systems are mostly semi-automated or manual, lacking intelligent control systems, making it difficult to achieve efficient management and optimization of the entire process.

[0004] To address the aforementioned issues, there is an urgent need to develop an efficient pretreatment system for recycled aggregates from construction waste. This system aims to improve the quality and resource utilization rate of recycled aggregates from construction waste by refining key processes such as sorting, crushing, washing, screening, and impurity removal, thereby achieving efficient and environmentally friendly reuse of construction waste. Utility Model Content

[0005] The purpose of this utility model is to provide a pretreatment system for recycled aggregates from construction waste that solves the above-mentioned technical problems.

[0006] To address the aforementioned technical problems, this utility model provides a pretreatment system for recycled aggregates from construction waste, comprising an integrated crushing and screening machine, an air-classifying dust collector, and an integrated washing and iron removal machine. The integrated crushing and screening machine includes a chassis, an impact crusher, and a screening conveyor belt. The chassis includes a front wall and an outer shell. The impact crusher is installed at the front of the top of the chassis, and the screening conveyor belt is located directly below the impact crusher, used to receive materials falling from the crusher and to screen and transport them. The impact crusher includes a guard plate, a fixed impact wall, a movable impact wall, and a support platform. The guard plate is located at the feed inlet of the impact crusher, the main shaft is installed on the support platform, and the disc is sleeved on the main shaft. Several hammers are installed on the outer edge of the disc. Both the fixed and movable impact walls are equipped with impact liners, and the impact liners have a serrated structure.

[0007] Furthermore, motor a is installed on the outer casing of the impact crusher; one end of the rocker arm is rotatably connected to the bearing of the movable impact wall, and the other end is rotatably connected to the bearing of the structural block at the rear of the impact crusher; the intelligent controller is installed above the structural block at the rear of the crusher; the intelligent controller is used to control motor a to rotate the rocker arm, and the guide plate is fixed at the discharge port position at the bottom of the impact crusher.

[0008] Furthermore, the screening conveyor belt is divided into upper and lower layers, each layer including a conveyor belt and internal roller bearings. The screening conveyor belt is fixed to the front wall and bottom steel plate of the machine casing. A chute is provided at the end of the screening conveyor belt, and a support rod is provided at the lower roller of the lower conveyor belt. The support rod is fixed to the bottom steel plate. The bottom steel plate is fixed to the bottom outer shell of the machine casing. The upper and lower rollers of the two screening conveyor belts are rotatably connected by a vibrating rod, and a vibrator is installed in the middle of the vibrating rod. When the vibrator runs, the screening conveyor belt located above vibrates. A transverse tie rod a and a transverse tie rod b are respectively provided at the leftmost roller bearing and bearing d of the two conveyor belts. The transverse tie rod a and the transverse tie rod b are fixed to the front wall of the machine casing. The transverse tie rod a is fixed to the front wall of the machine casing through a movable shaft plate. The movable shaft plate includes a bearing c and a short steel plate. The transverse tie rod is connected to the bearing c, and the bearing c is rotatably connected to the short steel plate. The short steel plate is fixed to the front wall of the machine casing.

[0009] Furthermore, the upper conveyor belt has rectangular cutouts, which allow materials larger than the cutout size to remain on the conveyor belt, while materials smaller than the cutout size fall to the lower conveyor belt.

[0010] Furthermore, the air-separation dust collector includes a casing a, a conveyor belt a, an exhaust fan, a motor b, an exhaust pipe, a support frame, a dust delivery pipe, and a lightweight item interceptor; the conveyor belt a is located at the center of the inner bottom surface of the casing a for material transport, the exhaust fan is located above the casing a and is fixedly supported by the support frame, the motor b is installed at the exhaust pipe and extends from the bottom of the exhaust fan into the interior of the casing, and a filter screen is provided at its inlet, and the dust delivery pipe is located on the upper side of the exhaust pipe for discharging dust.

[0011] Furthermore, the lightweight material interceptor includes a rotor, a rotating rod, a turntable, and intercepting rods. The upper end of the rotating rod is connected to the rotor, and the lower end is connected to the turntable. Multiple intercepting rods are evenly distributed on the turntable. The lightweight material interceptor is symmetrically arranged on both sides of the exhaust pipe. When waste is transported into the device, the exhaust fan is started, and the lightweight material is intercepted by the rotating intercepting rods. The floating dust is sent out through the dust delivery pipe through the filter screen.

[0012] Furthermore, the integrated cleaning and iron removal machine includes a casing c, a structural plate, a high-strength magnet, a slag removal device, a conveyor belt c, a high-pressure water gun head, and a slag outlet; the structural plate is installed at the top centerline inside the casing; the high-strength magnet is fixed to the bottom of the structural plate for adsorbing iron impurities; the slag removal device is located below the high-strength magnet, and the slag removal device includes a fixing block, a motor c, a telescopic rod, and a piston head; the perforated conveyor belt c is located inside the casing c for carrying and conveying the material to be processed; the high-pressure water gun head is fixed to the structural wall of the casing c for rinsing the material on the conveyor belt c; the conveyor belt c has a circular perforation, and the slag outlet is located at the casing c in the direction of piston head pushing.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. High-efficiency crushing and screening: By optimizing the crusher structure and adopting a double-layer vibrating screen conveyor belt, this utility model significantly improves the crushing efficiency and screening accuracy of construction waste, ensuring the uniformity and suitability of the particle size of recycled aggregate.

[0015] 2. Intelligent adjustment and strong applicability: The built-in intelligent controller can remotely adjust the working parameters of the crusher and vibrator, flexibly adapting to different material characteristics and production needs, greatly improving the applicability and production flexibility of the system.

[0016] 3. High-efficiency dust removal and separation of lightweight materials: The air-separating dust collector, combined with the design of a lightweight material interceptor, effectively separates and collects lightweight debris and dust, reducing environmental pollution and improving the purity of recycled aggregates.

[0017] 4. Thorough cleaning and iron removal: The integrated cleaning and iron removal machine uses high-strength magnets and high-pressure water guns to efficiently remove metal impurities and dirt from construction waste, ensuring the high quality and cleanliness of recycled aggregates. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the integrated crushing and screening machine of this utility model;

[0019] Figure 2 This is a schematic diagram of the air-separation dust collector of this utility model;

[0020] Figure 3 This is a top view of the lightweight item interceptor of this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the integrated cleaning and iron removal machine of this utility model;

[0022] Figure 5 This is a schematic diagram of the longitudinal section of the integrated cleaning and iron removal machine of this utility model;

[0023] Figure 6 This is a schematic diagram of various conveyor belts according to this utility model;

[0024] Figure 7 This is a process flow diagram of the present invention.

[0025] In the diagram: 101. Protective plate; 102. Chassis outer shell; 103. Front wall of the chassis; 104. Fixed counter-attack wall; 105. Movable counter-attack wall; 106. Motor (a); 107. Structural fastener; 108. Spindle; 109. Hammer head; 1010. Bearing (a); 1011. Bearing (b); 1012. Rocker arm; 1013. Intelligent controller; 1014. Counter-attack liner; 1015. Serrated structure; 1016. Transverse tie rod (a); 1017. Short steel plate; 1018. Bearing (c); 1019. Bolt (a) ; 1020. Roller bearing; 1021. Upper roller; 1022. Upper conveyor belt; 1023. Vibrating rod; 1024. Vibrator; 1025. Lateral tie rod (b); 1026. Bearing (d); 1027. Support rod; 1028. Lower roller; 1029. Bottom steel plate; 1030. Bolt (b); 1031. Slide; 1033. Fixing plate; 1034. Guide plate; 1035. Bolt; 1036. Support platform; 1037. Lower conveyor belt; 1038. Rectangular cutout; 1039. Flower plate;

[0026] 201. Chassis (a); 202. Conveyor belt (a); 203. Exhaust fan; 204. Motor (b); 205. Support frame; 206. Exhaust duct; 207. Filter screen; 208. Rotor; 209. Rotary rod; 2010. Turntable; 2011. Interception rod; 2012. Dust conveying pipe;

[0027] 301. Chassis shell (c); 302. Structural plate; 303. Angle steel; 304. Bolt (c); 305. High-strength magnet; 306. Fixing block; 307. Motor (c); 308. Telescopic rod; 309. Piston head; 3010. Structural wall; 3011. Conveyor belt (c); 3012. Circular hollow; 3013. High-pressure water gun head; 3014. Slag outlet; 3015. Slag chute. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0029] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0030] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0031] like Figures 1-7 As described above, this utility model provides a pretreatment system for recycled aggregates from construction waste, including an integrated crushing and screening machine, an air classifier and dust collector, and an integrated washing and iron removal machine, such as... Figure 1 , 6 As shown, the integrated crushing and screening machine includes a casing, an impact crusher, a screening conveyor belt, and a vibrating hydraulic rod. The casing, serving as the protective outer shell and load-bearing structure of the entire equipment, comprises a front wall 103 and an outer shell 102. The impact crusher is installed at the front of the casing top, responsible for the initial crushing of materials. The screening conveyor belt is located directly below the impact crusher, used to receive materials falling from the crusher and to screen and transport them. The working state of the screening conveyor belt can be adjusted by the vibrating hydraulic rod to adapt to the screening requirements of materials of different particle sizes.

[0032] The impact crusher includes a guard plate 101, a fixed impact wall 104, a movable impact wall 105, a disc 1039, hammers 109, a main shaft 108, a support platform 1036, a motor 106, a rocker arm 1012, and an intelligent controller 1013. The guard plate 101 is located at the feed inlet to prevent material splashing. The main shaft 108 is mounted on the support platform 1036, and the disc 1039 is fitted onto the main shaft 108. Several hammers 109 are mounted on the outer edge of the disc 1039. Both the fixed impact wall 104 and the movable impact wall 105 are equipped with impact liners 1014. The impact liners 1014 have a serrated structure 1015, which increases the irregularity of the impact surface. This helps increase shear force during the impact process, making it easier to crush construction waste. Motor A106 is mounted on the casing 102 at the rear of the impact crusher. One end of the rocker arm 1012 is rotatably connected to the bearing of the movable impact wall 105, and the other end is rotatably connected to the bearing of the structural block 107 at the rear of the impact crusher. Intelligent controller 1013 is mounted above the structural block 107 at the rear of the crusher. The intelligent controller 1013 can receive remote signals and control motor A106 to rotate the rocker arm 1012, achieving precise adjustment of the opening angle of the movable impact wall 105. This allows for flexible adjustment of the crusher's discharge size according to actual needs, improving the applicability of the device. Guide plate 1034 is fixed to the discharge port at the bottom of the impact crusher with bolts 1032.

[0033] The screening conveyor belt is divided into upper and lower layers, each layer including a conveyor belt and internal roller bearings 1020. The screening conveyor belt is fixed to the front wall 103 and the bottom steel plate 1029 of the machine casing. The end of the screening conveyor belt is provided with a chute 1031 to facilitate material discharge. The lower roller 1028 of the lower conveyor belt is provided with a support rod 1027, which is fixed to the bottom steel plate 1029. The bottom steel plate 1029 is fixed to the bottom outer shell of the machine casing by bolts b1030. The upper roller 1021 and the lower roller 1028 of the two screening conveyor belts are... 028 is rotatably connected via vibrating rod 1023, and a vibrator 1024 is installed in the middle of vibrating rod 1023. When vibrator 1024 runs, it generates a vibration effect, which in turn drives the screening conveyor belt above to vibrate. Horizontal tie rods a1016 and b1025 are respectively installed at the leftmost roller bearings 1020 and d1026 of the two conveyor belts. Horizontal tie rods a1016 and b1025 are fixed to the front wall of the machine casing. Horizontal tie rod a1016 is fixed to the front wall 103 of the machine casing via a movable shaft plate. The movable shaft plate includes bearing c1018 and a short steel plate 1017. The horizontal tie rod 1016 is connected to bearing c1018, and bearing c1018 is rotatably connected to the short steel plate 1017. The short steel plate 1017 is further fixed to the front wall 103 of the machine casing via bolt a1019. The conveyor belt design employs various structural forms to adapt to different material handling requirements. Specifically, the upper conveyor belt 1022 uses a rectangular perforated design 1038 to screen the pre-crushed construction waste, allowing materials larger than the perforated size to remain on conveyor belt 1022 and continue moving forward, while materials smaller than the perforated size can fall through the perforations to the lower conveyor belt 1037. The lower conveyor belt 1037 uses a standard belt design without perforations to carry and transport small particles falling from the upper layer. After preliminary crushing and screening by the crusher, the construction waste is sent to the next process.

[0034] like Figure 2 , 3As shown in Figure 6, the air-selective vacuum cleaner includes a casing a201, a conveyor belt a202, a blower 203, a motor b204, an air duct 206, a support frame 205, a dust delivery pipe 2012, and a lightweight item interceptor. The outer casing a201 forms the overall support frame of the device and provides protection. The conveyor belt a202 is located at the center of the inner bottom surface of the outer casing a201 for material transport. The induced draft fan 203 is located above the outer casing a201 and is fixedly supported by the support frame 205. The motor b204 is installed at the induced draft pipe 206 and extends from the bottom of the induced draft fan 203 into the interior of the outer casing 201, with a filter screen 207 at its inlet. The dust delivery pipe 2012 is located on the upper side of the induced draft pipe 206 for discharging dust. The lightweight item interceptor includes a rotor 208, a rotating rod 209, a turntable 2010, and intercepting rods 2011. The upper end of the rotating rod 209 is connected to the rotor 208, and the lower end is connected to the turntable 2010. Multiple intercepting rods 2011 are evenly distributed on the turntable 2010. The lightweight item interceptors are symmetrically arranged on both sides of the induced draft pipe 206 to effectively intercept lightweight items. When waste is transported into the device, the induced draft fan 203 starts to suck up the light materials and dust; the light materials are intercepted by the rotating interceptor bar 2011, and the dust is sent out through the dust conveyor pipe 2012 through the filter screen 207; the material after the light materials have been removed is sent to the next process by the conveyor belt 202.

[0035] The rotor 208 is controlled to rotate by a motor, which in turn drives the turntable 2010 to rotate via the rotating rod 209. The multiple intercepting rods 2011 used during the rotation process can block lightweight materials.

[0036] like Figure 4 , 5As shown in Figure 6, the integrated cleaning and iron removal machine includes a casing c301, a structural plate 302, a high-strength magnet 305, a slag removal device, a conveyor belt c3011, a high-pressure water gun head 3013, and a slag outlet 3014. The casing c301 constitutes the main body of the equipment; the structural plate 302 is installed at the top centerline inside the casing 301; the high-strength magnet 305 is fixed to the bottom of the structural plate 302 by angle steel 303 and bolts c304, and is used to adsorb iron impurities. The slag removal device is located below the high-strength magnet 305. The slag removal device includes a fixing block 306, a motor c307, a telescopic rod 308, and a piston head 309. The horizontal movement of the piston head 309 is controlled by the telescopic rod 308, and the rotation of the piston head 309 is controlled by the motor c307 to remove impurities, aiming to remove iron impurities adsorbed on the high-strength magnet 305. The perforated conveyor belt c3011 is located inside the casing c301 and is responsible for carrying and transporting the materials to be processed. The high-pressure water gun head 3013 is fixed to the structural wall 3010 of the casing c301 to wash the materials on the conveyor belt c3011. The conveyor belt c3011 has a circular perforation 3012 to facilitate drainage. In addition, the slag outlet 3014 is located at the casing c301 in the direction of the piston head 309's push to facilitate the discharge of removed iron impurities.

[0037] The pretreatment system for recycled aggregates from construction waste provided by this utility model can be operated according to the following steps:

[0038] Step 1: Construction waste is sent to the integrated crushing and screening machine for preliminary crushing and screening;

[0039] Step 2: Send the pre-crushed and screened construction waste to an air classifier for air classification and dust collection to remove lightweight items and floating dust;

[0040] Step 3: The material after air separation is sent to the integrated cleaning and iron removal machine for iron removal, while the high-pressure water gun 3013 washes the material.

[0041] Step 4: Conduct quality inspection on the iron removal and cleaning materials to ensure that the particle size meets the requirements and that impurities are cleaned. If the requirements are not met, send the materials back to the integrated crushing and screening machine. The intelligent controller 1013 intelligently adjusts the size of the crusher's discharge port and repeats the above process until the quality meets the requirements and recycled aggregate is output.

[0042] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A pretreatment system for recycled aggregates from construction waste, characterized in that: The system includes an integrated crushing and screening machine, an air-classifying dust collector, and an integrated cleaning and iron removal machine. The integrated crushing and screening machine includes a chassis, an impact crusher, and a screening conveyor belt. The chassis includes a front wall (103) and an outer shell (102). The impact crusher is installed at the front of the top of the chassis, and the screening conveyor belt is located directly below the impact crusher to receive materials falling from the crusher and to screen and transport them. The impact crusher includes a guard plate (101), a fixed impact wall (104), and a movable impact wall. The wall (105), the support platform (1036), and the guard plate (101) are located at the feed inlet of the impact crusher. The main shaft (108) is installed on the support platform (1036), and the flower disc (1039) is sleeved on the main shaft (108). Several hammers (109) are installed on the outer edge of the flower disc (1039). Both the fixed impact wall (104) and the movable impact wall (105) are equipped with impact liners (1014), and the impact liners (1014) are provided with serrated structures (1015).

2. The pretreatment system for recycled aggregates from construction waste according to claim 1, characterized in that: Motor a (106) is mounted on the casing (102) of the impact crusher; one end of the rocker arm (1012) is rotatably connected to the bearing of the movable impact wall (105), and the other end is rotatably connected to the bearing of the structural block (107) at the rear of the impact crusher; the intelligent controller (1013) is mounted above the structural block (107) at the rear of the crusher; the intelligent controller (1013) is used to control motor a (106) to rotate the rocker arm (1012), and the guide plate (1034) is fixed at the discharge port position at the bottom of the impact crusher.

3. The pretreatment system for recycled aggregates from construction waste according to claim 1, characterized in that: The screening conveyor belt is divided into upper and lower layers, each layer including a conveyor belt and internal roller bearings. The screening conveyor belt is fixed to the front wall (103) and bottom steel plate (1029) of the machine casing. The end of the screening conveyor belt is provided with a slide (1031). The lower roller (1028) of the lower conveyor belt is provided with a support rod (1027), which is fixed to the bottom steel plate (1029). The bottom steel plate (1029) is fixed to the bottom shell of the machine casing. The upper roller (1021) and lower roller (1028) of the two screening conveyor belts are rotatably connected by a vibrating rod (1023). A vibrator (1024) is installed in the middle of the vibrating rod (1023). When the vibrator (1024) is running, the position The screening conveyor belt above vibrates; the leftmost roller bearings (1020) and bearing d (1026) of the two conveyor belts are respectively provided with transverse tie rods a (1016) and b (1025), and the transverse tie rods a (1016) and b (1025) are fixed on the front wall (103) of the machine box; the transverse tie rod a (1016) is fixed to the front wall (103) of the machine box through a movable shaft plate, the movable shaft plate includes a bearing c (1018) and a short steel plate (1017), wherein the transverse tie rod a (1016) is connected to the bearing c (1018), the bearing c (1018) is rotatably connected to the short steel plate (1017), and the short steel plate (1017) is fixed on the front wall (103) of the machine box.

4. The pretreatment system for recycled aggregates from construction waste according to claim 3, characterized in that: The upper conveyor belt (1022) has a rectangular cutout (1038) so that materials larger than the cutout size remain on the conveyor belt (1022), while materials smaller than the cutout size fall to the lower conveyor belt (1037).

5. The pretreatment system for recycled aggregates from construction waste according to claim 1, characterized in that: The air-selective dust collector includes a casing a (201), a conveyor belt a (202), an exhaust fan (203), a motor b (204), an exhaust pipe (206), a support frame (205), a dust delivery pipe (2012), and a lightweight item interceptor. The conveyor belt a (202) is located at the center of the inner bottom surface of the casing a (201) for material transport. The exhaust fan (203) is located above the casing a (201) and is fixedly supported by the support frame (205). The motor b (204) is installed at the exhaust pipe (206) and extends from the bottom of the exhaust fan (203) into the interior of the casing a (201), with a filter screen (207) at its inlet. The dust delivery pipe (2012) is located on the upper side of the exhaust pipe (206) for discharging dust.

6. The pretreatment system for recycled aggregates from construction waste according to claim 5, characterized in that: The lightweight material interceptor includes a rotor (208), a rotating rod (209), a turntable (2010), and intercepting rods (2011). The upper end of the rotating rod (209) is connected to the rotor (208), and the lower end is connected to the turntable (2010). Multiple intercepting rods (2011) are evenly distributed on the turntable (2010). The lightweight material interceptor is symmetrically arranged on both sides of the exhaust pipe (206). When the waste material is transported into the lightweight material interceptor, the exhaust fan (203) is started. The lightweight material is intercepted by the rotating intercepting rods (2011), and the floating dust is sent out through the dust delivery pipe (2012) through the filter screen (207).

7. The pretreatment system for recycled aggregates from construction waste according to claim 1, characterized in that: The integrated cleaning and iron removal machine includes a casing c (301), a structural plate (302), a high-strength magnet (305), a slag removal device, a conveyor belt c (3011), a high-pressure water gun head (3013), and a slag outlet (3014); the structural plate (302) is installed at the top centerline inside the casing c (301); the high-strength magnet (305) is fixed to the bottom of the structural plate (302) for adsorbing iron impurities; the slag removal device is located below the high-strength magnet (305), and the slag removal device includes a fixing block (306), a motor c (3014), and a slag outlet (3015). 7) Telescopic rod (308) and piston head (309); The hollowed-out conveyor belt c (3011) is located inside the outer casing c (301) and is used to carry and transport the material to be processed. The high-pressure water gun head (3013) is fixed on the structural wall (3010) of the outer casing c (301) and is used to wash the material on the conveyor belt c (3011); The conveyor belt c (3011) is provided with a circular hollow (3012), and the slag outlet (3014) is located at the outer casing c (301) in the direction of the piston head (309).

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