Industrial sludge-based all-solid-waste water permeable brick production device and production method thereof

Abstract

The invention relates to the technical field of clay brick production, in particular to an industrial sludge-based all-solid-waste water permeable brick production device and a production method thereof.The device comprises a screen drum, a material blocking ring and a torsion wing plate, the axis of the screen drum is horizontal, the screen drum can rotate around the axis of the screen drum, and a plurality of material screening holes are formed in the circumferential direction of the screen drum; the material blocking ring is coaxial with the screen drum and arranged at one end of the screen drum. According to the intelligent blocking remover, the torsion wing plate is arranged, when the screen drum rotates till the torsion wing plate inclines downwards, the part of materials can fall down along the side face of the torsion wing plate, after the part of materials fall to the lower portion of the screen drum, gravitational potential energy of the part of materials is converted into kinetic energy, the screen drum is stressed to vibrate, blocking objects in screening holes are promoted to be separated, and intelligent blocking removal is achieved; converter steel slag is prevented from blocking the screening holes, and the situation that the screening efficiency is reduced due to blocking of the screening holes is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of clay brick production, and in particular to an industrial sludge-based all-solid waste permeable brick production device and a production method thereof. Background Art

[0002] Permeable brick is an environmentally friendly porous material, mainly used to solve the problem of urban surface hardening, and plays an important role in maintaining the ecological balance of the city. In the existing technology, industrial solid waste is often used to replace natural raw materials for the production of sintered permeable bricks, such as electroplating sludge, fly ash powder, converter slag and other auxiliary materials are mixed to make permeable bricks. Compared with the traditional permeable brick firing method, this method has lower cost and better market prospects.

[0003] In order to ensure the density and strength of the permeable bricks, the raw materials need to be processed to make the particle size of the raw materials more uniform. The electroplating sludge needs to be dried and then granulated, and the converter slag needs to be screened to obtain converter slag with a particle size of 5-10 mm. In order to obtain the converter slag of the required particle size, the existing technology mostly screens the converter slag through a sieve drum. The screening process has the following problems: the converter slag is easy to block the screening holes of the sieve drum, resulting in a decrease in the screening efficiency of the sieve drum. Summary of the invention

[0004] Based on this, it is necessary to provide an industrial sludge-based all-solid waste permeable brick production device to address the problems existing in the current screening device, so as to solve the problem that when the screen drum is screening converter slag, the converter slag is easy to block the screen holes and the screening efficiency of the screen drum is low.

[0005] The above purpose is achieved through the following technical solutions: An industrial sludge-based all-solid waste permeable brick production device comprises: A screen drum, the axis of which is horizontal and the screen drum can rotate around its axis; A material blocking ring, which is coaxial with the screen drum and is arranged at one end of the screen drum; A torsion wing plate, wherein the length direction of the torsion wing plate is parallel to the axis of the screen drum and the length of the torsion wing plate is adapted to the length of the screen drum; There are a plurality of torsion wing plates, and the plurality of torsion wing plates are arranged on the inner peripheral wall of the screen drum at equal intervals; The twisted wing plate is twisted in the length direction so that the distance from the side of the twisted wing plate close to the retaining ring to the center of the screen drum is smaller than the distance from the side away from the retaining ring to the center of the screen drum.

[0006] In one of the embodiments, the industrial sludge-based all-solid waste permeable brick production device further includes a frame, and the screen drum is rotatably arranged on the frame; A material drop bin is provided at the lower part of the frame and is located directly below the screen drum.

[0007] In one embodiment, a driving member is provided on the frame, and the driving member includes a motor, a driving sprocket, a driven sprocket, a transmission shaft, a shaft seat, a driving gear and a gear ring. The motor is arranged on the frame, and the output end of the motor is fixedly connected to the driving sprocket, the shaft seat is arranged on the frame, the transmission shaft is rotatably arranged on the shaft seat, the driven sprocket is fixedly connected to the outside of the transmission shaft, the driving sprocket and the driven sprocket are connected through a transmission chain, the driving gear is also fixedly connected to the outside of the transmission shaft, and the gear ring is coaxially arranged on the outer peripheral wall of the screen drum, and the driving gear and the gear ring are meshed with each other.

[0008] In one of the embodiments, a first wheel frame is further provided on the frame, and a supporting wheel is rotatably provided on the first wheel frame, and the supporting wheel is in rolling contact with the outer peripheral wall of the screen drum.

[0009] In one of the embodiments, a second wheel frame is further provided on the frame, and a limiting wheel is rotatably provided on the second wheel frame, and the limiting wheel is in rolling contact with the outer peripheral wall of the screen drum.

[0010] In one of the embodiments, a plurality of sieve holes are provided on the side surface of the twisted wing plate.

[0011] In one embodiment, arc grooves are formed at equal intervals on the circumference of the screen drum, the length direction of the arc grooves is parallel to the axis of the screen drum, and a concave screen plate is arranged in the arc groove, the concave screen plate is elastic, and in the initial state, the center of the concave screen plate is arched toward the axis direction of the screen drum; Crescent plates are arranged on both sides of the arc groove in the length direction, and the crescent plates are in sliding contact with the two side surfaces of the concave sieve plate in the length direction.

[0012] In one embodiment, the cross-sectional area of ​​the arc-shaped groove gradually decreases from a side close to the retaining ring to a side away from the retaining ring; The outer dimensions of the arc-shaped groove match the outer dimensions of the concave sieve plate.

[0013] In one of the embodiments, the concave sieve plate and the sieve cylinder are both provided with a plurality of sieve holes, and the diameter of the sieve holes is the same as the diameter of the sieve holes.

[0014] A method for producing industrial sludge-based all-solid waste permeable bricks comprises the following steps: S100: dehydrating the electroplating sludge to a moisture content of 20%-25% to obtain pretreated electroplating sludge; S200: Prepare raw materials according to the following mass parts: Pre-treat electroplating sludge 200 - 300 parts, the particle size of pre-treat electroplating sludge is less than 200μm, 120 - 150 parts of fly ash, the fly ash is Grade II fly ash, 150 - 200 parts of converter slag, sieve the converter slag, and take the converter slag particle size of 5 - 10mm, 20 - 30 parts of activated carbon filter mud powder, which is obtained by adsorbing municipal sewage with activated carbon; Papermaking black liquor 50 - 70 parts; S300: mixing converter slag with activated carbon filter mud powder to obtain modified aggregate; S400: After pre-treated electroplating sludge and fly ash are mixed evenly, modified aggregate is added for forced mixing, and then papermaking black liquor is added and mixed evenly to obtain a mixture; S500: putting the mixed material into a mold and pressing it into shape to obtain a blank; S600: The blank is cured, dried and sintered to obtain permeable bricks. The sintering temperature is 800 - 900 ° C and the sintering time is 30 - 50 minutes.

[0015] The beneficial effects of the present invention are: 1. The present invention is provided with a torsion wing plate. When the screen drum rotates to the point where the torsion wing plate tilts downward, part of the material will fall along the side of the torsion wing plate. After the part of the material falls to the lower part of the screen drum, the gravitational potential energy of the part of the material is converted into kinetic energy, and the screen drum is vibrated by force, so that the blockage in the screen hole is caused to be detached, thereby realizing intelligent unblocking, thereby preventing the converter slag from blocking the screen hole and avoiding the reduction of screening efficiency due to the blockage of the screen hole.

[0016] 2. The present invention twists the torsion wing plate in the length direction so that the distance from the side of the torsion wing plate close to the material retaining ring to the center of the screen drum is smaller than the distance from the side far from the material retaining ring to the center of the screen drum. This can ensure that the closer the material is to the discharge port, the lower the height to which the material is lifted by the torsion wing plate, thereby reducing the gravitational potential energy of the material when it falls and preventing the screen drum from being deformed and damaged due to excessive kinetic energy of large particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of an industrial sludge-based all-solid waste permeable brick production device of the present invention; Figure 2 This is an exploded view of an industrial sludge-based all-solid waste permeable brick production device of the present invention; Figure 3 It is a structural schematic diagram of a torsion wing plate in a production device for industrial sludge-based all-solid waste permeable bricks of the present invention; Figure 4 It is a schematic diagram of the initial state of the inner concave screen plate in the production device of industrial sludge-based all-solid waste permeable bricks of the present invention; Figure 5 It is a schematic diagram of the deformation state of the concave screen plate in the production device of industrial sludge-based all-solid waste permeable bricks of the present invention; Figure 6 It is a stereoscopic diagram of an industrial sludge-based all-solid waste permeable brick production device of the present invention.

[0018] in: 100, screen drum; 110, retaining ring; 120, arc groove; 130, crescent plate; 200, torsion wing plate; 210, screen hole; 300, frame; 310, drop bin; 320, driving member; 321, motor; 322, driving sprocket; 323, driven sprocket; 324, transmission shaft; 325, shaft seat; 326, driving gear; 327, gear ring; 410, first wheel frame; 420, supporting wheel; 430, second wheel frame; 440, limiting wheel; 450, concave screen plate; 451, screen hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] like Figure 1-Figure 6As shown, an industrial sludge-based all-solid waste permeable brick production device includes a screen drum 100, a material retaining ring 110 and a torsion wing plate 200. The axis of the screen drum 100 is horizontal and the screen drum 100 can rotate around its axis. A plurality of screen holes 451 are opened in the circumference of the screen drum 100. The material retaining ring 110 is coaxial with the screen drum 100 and is arranged at one end of the screen drum 100. The outer diameter of the material retaining ring 110 is the same as the diameter of the screen drum 100, and the inner diameter of the material retaining ring 110 is smaller than the diameter of the screen drum 100. The screen drum 100 is provided with a material retaining ring 110 at one end as a feed port, and the other end of the screen drum 100 is a discharge port. The length of the torsion wing plate 200 is The direction is parallel to the axis of the screen drum 100 and the length of the torsion wing plate 200 is adapted to the length of the screen drum 100. There are multiple torsion wing plates 200, and the multiple torsion wing plates 200 are arranged at equal intervals on the inner circumferential wall of the screen drum 100. The torsion wing plates 200 are twisted in the length direction so that the distance from the side of the torsion wing plate 200 close to the baffle ring 110 to the center of the screen drum 100 is smaller than the distance from the side away from the baffle ring 110 to the center of the screen drum 100. By twisting the torsion wing plate 200 into the above shape, the material can enter from the feed port and be discharged from the discharge port under the guiding action of the torsion wing plate 200.

[0023] When in use, the screen drum 100 is rotated around its axis, and then the staff puts the converter slag to be screened (hereinafter referred to as the material) into the screen drum 100 from the feed port. As the screen drum 100 rotates, a portion of the material will follow the torsion wing plate 200 to rotate toward the position of the top of the screen drum 100. When the screen drum 100 rotates to the torsion wing plate 200 tilted downward, this portion of the material will fall along the side of the torsion wing plate 200. When this portion of the material falls to the lower part of the screen drum 100, the gravitational potential energy of this portion of the material is converted into kinetic energy, and the screen drum 100 is vibrated by force, causing the blockage in the screen hole 451 to be detached, thereby realizing intelligent unblocking. In the process of the material moving from the feed port to the discharge port, the material is gradually screened, and the material with a particle size smaller than the screen hole 451 is screened out of the screen drum 100, and the material with a particle size larger than the screen hole 451 remains in the screen drum 100. Therefore, the material remaining in the screen drum 100 becomes less and less, and the proportion of large particle material becomes more and more. By twisting the torsion wing plate 200 in the length direction so that the distance from the side of the torsion wing plate 200 close to the baffle ring 110 to the center of the screen drum 100 is smaller than the distance from the side away from the baffle ring 110 to the center of the screen drum 100, the closer the material is to the discharge port, the lower the height to which the material is lifted by the torsion wing plate 200, thereby reducing the gravitational potential energy of the material when it falls, and preventing the screen drum 100 from being deformed and damaged due to excessive kinetic energy of large particle materials.

[0024] It should also be added that, in order to facilitate the collection of the material under the screen in the screen drum 100, as Figure 1As shown, the industrial sludge-based all-solid waste permeable brick production device also includes a frame 300, and the screen drum 100 is rotatably arranged on the frame 300. A drop bin 310 is arranged at the lower part of the frame 300, and the lower end of the drop bin 310 is open. The drop bin 310 is located directly below the screen drum 100. The material sieved from the screen holes 451 of the screen drum 100 can fall into the drop bin 310 and be discharged from the lower end opening position of the drop bin 310.

[0025] In a further embodiment, Figure 2 and Figure 3 As shown, a driving member 320 is provided on the frame 300, and the driving member 320 is used to drive the screen drum 100 to rotate around its axis. The driving member 320 includes a motor 321, a driving sprocket 322, a driven sprocket 323, a transmission shaft 324, a shaft seat 325, a driving gear 326 and a ring gear 327. The motor 321 is arranged on the frame 300, and the output end of the motor 321 is fixedly connected to the driving sprocket 322, the shaft seat 325 is arranged on the frame 300, the transmission shaft 324 is rotatably arranged on the shaft seat 325, the driven sprocket 323 is fixedly connected to the outside of the transmission shaft 324, the driving sprocket 322 and the driven sprocket 323 are connected by a transmission chain, the driving gear 326 is also fixedly connected to the outside of the transmission shaft 324, the ring gear 327 is coaxially arranged on the outer peripheral wall of the screen drum 100, and the driving gear 326 and the ring gear 327 are meshed with each other.

[0026] When in use, the motor 321 is started, and the output end of the motor 321 drives the driving sprocket 322 to rotate, the driving sprocket 322 drives the driven sprocket 323 to rotate through the transmission chain, the driven sprocket 323 drives the transmission shaft 324 to rotate, the transmission shaft 324 drives the driving gear 326 to rotate, the driving gear 326 drives the ring gear 327 to rotate through tooth meshing, and the ring gear 327 drives the screen drum 100 to rotate synchronously.

[0027] In a further embodiment, Figure 4 As shown, a plurality of sieve holes 210 are provided on the side of the twisted wing plate 200. The sieve holes 210 are provided to improve the screening efficiency so that materials with a particle size smaller than the sieve holes 210 can fall through the sieve holes 210 during the lifting process, thereby accelerating the screening speed and improving the efficiency.

[0028] In a further embodiment, Figure 2 As shown, a first wheel frame 410 is also provided on the frame 300, and a support wheel 420 is rotatably provided on the first wheel frame 410. The support wheel 420 is in rolling contact with the outer peripheral wall of the sieve drum 100. Specifically, support wheels 420 are provided on both sides of the frame 300, and the sieve drum 100 is rotatably supported by the support wheels 420 at both ends of the sieve drum 100.

[0029] In a further embodiment, Figure 2As shown, a second wheel frame 430 is also provided on the frame 300, and a limiting wheel 440 is rotatably provided on the second wheel frame 430, and the limiting wheel 440 is in rolling contact with the outer peripheral wall of the screen drum 100; specifically, limiting wheels 440 are provided on the front and rear sides of the frame 300, and the screen drum 100 is limited by the limiting wheels 440 to prevent the screen drum 100 from moving in a non-axial direction.

[0030] In a further embodiment, Figure 2 As shown, arc grooves 120 are provided at equal intervals on the circumference of the screen drum 100, and the length direction of the arc grooves 120 is parallel to the axis of the screen drum 100. A concave screen plate 450 is provided in the arc groove 120, and the concave screen plate 450 is elastic. In the initial state, the center of the concave screen plate 450 is arched toward the axis direction of the screen drum 100, and crescent plates 130 are provided on both sides of the length direction of the arc groove 120. The crescent plates 130 are in sliding contact with the two side surfaces of the concave screen plate 450 in the length direction. A plurality of screen holes 451 are also provided on the concave screen plate 450, and the diameter of the screen hole 451 is the same as the diameter of the screen hole 210.

[0031] When the concave sieve plate 450 rotates with the sieve drum 100 to the lower part of the sieve drum 100, the gravity of the material presses on the concave sieve plate 450, causing the concave sieve plate 450 to be elastically deformed under force. As the sieve drum 100 continues to rotate, when the concave sieve plate 450 gradually rotates to the upper part of the sieve drum 100, the pressure of the material on the concave sieve plate 450 is reduced, and the concave sieve plate 450 is reset from the elastic deformation state. During the reset of the concave sieve plate 450, the concave sieve plate 450 itself vibrates, so that the material blocked in the sieve holes 451 in the area where the concave sieve plate 450 is located can be detached, so that the intelligent unblocking effect is better when the sieve holes 451 on the surface of the sieve drum 100 are blocked.

[0032] It is understandable that the crescent plate 130 is provided to prevent the material from being released from the gap between the concave screen plate 450 and the screen drum 100 when the concave screen plate 450 is deformed.

[0033] In a further embodiment, the cross-sectional area of ​​the arc groove 120 gradually decreases from the side close to the retaining ring 110 to the side away from the retaining ring 110, and the outer dimensions of the arc groove 120 are compatible with the outer dimensions of the concave screen plate 450. Therefore, the transverse cross-sectional area of ​​the concave screen plate 450 also gradually decreases from the side close to the retaining ring 110 to the side away from the retaining ring 110.

[0034] It can be understood that because the distance from the end of the torsion wing plate 200 away from the material retaining ring 110 to the center of the screen drum 100 is greater than the distance from the end of the torsion wing plate 200 close to the material retaining ring 110 to the center of the screen drum 100, if the cross-sectional diameter of the concave screen plate 450 remains unchanged, large materials may be stuck between the torsion wing plate 200 and the concave screen plate 450 when moving to the end away from the material retaining ring 110. Therefore, the transverse cross-sectional dimension of the concave screen plate 450 is gradually reduced from the feed end to the discharge end to avoid the problem of poor screening caused by the torsion wing plate 200 being too close to the concave screen plate 450 at the end close to the discharge port.

[0035] A method for producing industrial sludge-based all-solid waste permeable bricks comprises the following steps: S100: dehydrating the electroplating sludge to a moisture content of 20%-25% to obtain pretreated electroplating sludge; S200: Prepare raw materials according to the following mass parts: Pre-treat electroplating sludge 200 - 300 parts, the particle size of pre-treat electroplating sludge is less than 200μm, 120 - 150 parts of fly ash, the fly ash is Grade II fly ash, 150 - 200 parts of converter slag, sieve the converter slag, and take the converter slag particle size of 5 - 10mm, 20 - 30 parts of activated carbon filter mud powder, which is obtained by adsorbing municipal sewage with activated carbon; Papermaking black liquor 50 - 70 parts; S300: mixing converter slag with activated carbon filter mud powder to obtain modified aggregate; S400: After pre-treated electroplating sludge and fly ash are mixed evenly, modified aggregate is added for forced mixing, and then papermaking black liquor is added and mixed evenly to obtain a mixture; S500: putting the mixed material into a mold and pressing it into shape to obtain a blank; S600: The blank is cured, dried and sintered to obtain permeable bricks. The sintering temperature is 800 - 900 ° C and the sintering time is 30 - 50 minutes.

[0036] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An industrial sludge-based all-solid waste permeable brick production device, characterized in that: include: A screen drum, the axis of which is horizontal and the screen drum can rotate around its axis; A material blocking ring, which is coaxial with the screen drum and is arranged at one end of the screen drum; A torsion wing plate, wherein the length direction of the torsion wing plate is parallel to the axis of the screen drum and the length of the torsion wing plate is adapted to the length of the screen drum; There are a plurality of torsion wing plates, and the plurality of torsion wing plates are arranged on the inner peripheral wall of the screen drum at equal intervals; The twisted wing plate is twisted in the length direction so that the distance from the side of the twisted wing plate close to the retaining ring to the center of the screen drum is smaller than the distance from the side away from the retaining ring to the center of the screen drum.

2. The industrial sludge-based all-solid waste permeable brick production device according to claim 1 is characterized in that: The industrial sludge-based all-solid waste permeable brick production device also includes a frame, and the screen drum is rotatably arranged on the frame; A material drop bin is provided at the lower part of the frame and is located directly below the screen drum.

3. The industrial sludge-based all-solid waste permeable brick production device according to claim 2 is characterized in that: The frame is provided with a driving member, which includes a motor, a driving sprocket, a driven sprocket, a transmission shaft, a shaft seat, a driving gear and a gear ring. The motor is arranged on the frame, the output end of the motor is fixedly connected to the driving sprocket, the shaft seat is arranged on the frame, the transmission shaft is rotatably arranged on the shaft seat, the driven sprocket is fixedly connected to the outside of the transmission shaft, the driving sprocket and the driven sprocket are connected through a transmission chain, the driving gear is also fixedly connected to the outside of the transmission shaft, the gear ring is coaxially arranged on the outer peripheral wall of the screen drum, and the driving gear and the gear ring are meshed with each other.

4. The industrial sludge-based all-solid waste permeable brick production device according to claim 2 is characterized in that: The frame is also provided with a first wheel frame, on which a supporting wheel is rotatably provided, and the supporting wheel is in rolling contact with the outer peripheral wall of the screen drum.

5. The industrial sludge-based all-solid waste permeable brick production device according to claim 2 is characterized in that: The frame is also provided with a second wheel frame, on which a limiting wheel is rotatably provided, and the limiting wheel is in rolling contact with the outer peripheral wall of the screen drum.

6. The industrial sludge-based all-solid waste permeable brick production device according to claim 1 is characterized in that: A plurality of sieve holes are provided on the side surface of the twisted wing plate.

7. The industrial sludge-based all-solid waste permeable brick production device according to claim 1 is characterized in that: The sieve drum is provided with arc grooves at equal intervals on its circumference, the length direction of the arc grooves is parallel to the axis of the sieve drum, and a concave sieve plate is arranged in the arc grooves. The concave sieve plate is elastic, and in the initial state, the center of the concave sieve plate is arched toward the axis of the sieve drum; Crescent plates are arranged on both sides of the arc groove in the length direction, and the crescent plates are in sliding contact with the two side surfaces of the concave sieve plate in the length direction.

8. The industrial sludge-based all-solid waste permeable brick production device according to claim 7 is characterized in that: The cross-sectional area of ​​the arc-shaped groove gradually decreases from the side close to the retaining ring to the side away from the retaining ring; The outer dimensions of the arc-shaped groove match the outer dimensions of the concave sieve plate.

9. The industrial sludge-based all-solid waste permeable brick production device according to claim 7 is characterized in that: The inner concave screen plate and the screen cylinder are both provided with a plurality of screen holes, and the diameter of the screen holes is the same as the diameter of the screen holes.

10. A method for producing industrial sludge-based all-solid waste permeable bricks, using the device according to claims 1-9, characterized in that: The following steps are involved: S100: dehydrating the electroplating sludge to a moisture content of 20%-25% to obtain pretreated electroplating sludge; S200: Prepare raw materials according to the following mass parts: Pre-treat electroplating sludge 200 - 300 parts, the particle size of pre-treat electroplating sludge is less than 200μm, 120 - 150 parts of fly ash, the fly ash is Grade II fly ash, 150 - 200 parts of converter slag, sieve the converter slag, and take the converter slag particle size of 5 - 10mm, 20 - 30 parts of activated carbon filter mud powder, which is obtained by adsorbing municipal sewage with activated carbon; Papermaking black liquor 50 - 70 parts; S300: mixing converter slag with activated carbon filter mud powder to obtain modified aggregate; S400: After pre-treated electroplating sludge and fly ash are mixed evenly, modified aggregate is added for forced mixing, and then papermaking black liquor is added and mixed evenly to obtain a mixture; S5 00: Put the mixed material into a mold and press it into shape to obtain a blank; S600: The blank is cured, dried and sintered to obtain permeable bricks. The sintering temperature is 800 - 900 ° C and the sintering time is 30 - 50 minutes.

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