Integrated equipment for strengthening surface of low-carbon recycled aggregate and mineralizing micro-powder carbon

Abstract

The invention discloses low-carbon recycled aggregate surface strengthening micro-powder carbon mineralization integrated equipment which comprises a rack, a first carbonization barrel and a second carbonization barrel, the first carbonization barrel is horizontally installed on the rack in a vibrating mode, a discharging hopper is arranged on the top face of the first carbonization barrel, a feeding port is formed in the top face of the first carbonization barrel, a buffering sealing structure is arranged in the discharging hopper, and the buffering sealing structure is connected with the second carbonization barrel. A first discharge port and a second discharge port are formed in the bottom surface of each carbonization barrel, a filter screen is arranged in the range of the first discharge port, two second carbonization barrels are arranged below the first carbonization barrel, the upper ends of the two second carbonization barrels are communicated with the first discharge port and the second discharge port in a one-to-one correspondence manner, stirring rods are arranged in the second carbonization barrels, and the stirring rods are arranged in the second carbonization barrels. The lower ends of the two carbonization barrels II are provided with feed openings, and the top surfaces of the two carbonization barrels II are respectively provided with a gas filling opening and a liquid filling opening; a rod body and a spiral blade are arranged in the carbonization cylinder I, a grinding piece is mounted on the rod body, and a stripping surface is arranged on the surface of the grinding piece; compared with the prior art, the aggregate carbonization effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of construction waste regeneration, and in particular to an integrated device for surface-enhanced micro-powder carbon mineralization of low-carbon recycled aggregate. Background Art

[0002] Construction waste is solid waste generated during construction and demolition activities, with waste concrete being a significant component. Crushing waste concrete yields recycled concrete aggregate, but the surface cement mortar of recycled concrete aggregate suffers from poor surface strength, low interfacial bonding, and high and unstable water absorption. This results in recycled concrete aggregate being used only for low-quality concrete or as a foundation mix, resulting in a significant waste of resources. Carbonized aggregate is currently one of the most effective technologies for enhancing the properties of recycled concrete aggregate. Carbonized recycled concrete aggregate can effectively improve concrete's mechanical strength, workability, and durability, even achieving properties comparable to those of concrete made from natural aggregate. Existing methods for carbonizing crushed recycled concrete aggregate typically involve thoroughly mixing carbon dioxide gas, a carbonization reaction solution, and the recycled concrete aggregate, allowing the carbon dioxide gas, carbonization reaction solution, and the recycled concrete aggregate to undergo a chemical reaction, completing the carbonization process. For example, free calcium ions in the mortar can combine with water and carbon dioxide gas to form a calcium carbonate layer, significantly improving the properties of the carbonized concrete aggregate. Existing concrete aggregate carbonization equipment, such as a solid waste recycled concrete aggregate carbonization device with application number 2024115742262, includes a mixing cylinder, a spiral injection structure, a sliding sealing plate, a telescopic stirring mechanism, a liquid adding structure, a curved aeration mechanism and a sloped discharge channel thereof, wherein the sliding sealing plate is slidably arranged in the mixing cylinder, a through sliding opening is opened on one side of the mixing cylinder, a spiral injection structure is slidably arranged in the through sliding opening, the spiral injection structure is fixedly connected to the sliding sealing plate, the sliding sealing plate is close to one end of the spiral injection structure and the inner wall of the mixing cylinder; the liquid adding structure is arranged at the bottom of the spiral injection structure; the curved aeration mechanism is arranged at the top of the mixing cylinder; the bottom of the mixing cylinder is connected to a discharge port, the sloped discharge channel is connected to the bottom of the discharge port, and a closed structure is arranged between the discharge port and the sloped discharge channel. During application, a spiral injection structure is used to add concrete aggregate into the mixing cylinder, and a carbonation reaction solution can be simultaneously added into the mixing cylinder through a liquid adding component. Carbon dioxide is allowed to enter the carbonation reaction solution through a curved aeration mechanism. The concrete aggregate and the carbonation reaction solution are mixed and stirred using a telescopic stirring mechanism to complete the carbonization operation of the concrete aggregate. Finally, the concrete slurry is discharged using a sloped discharge channel.

[0003] However, the telescopic stirring mechanism of the above-mentioned recycled concrete aggregate carbonization device only achieves the mixing of carbon dioxide gas, carbonation reaction solution and aggregate by stirring the first frame and the second frame. In this way, the carbonation reaction solution and carbon dioxide gas only penetrate the surface of the concrete aggregate. It takes a long time, possibly several years or even longer, to achieve the deep carbonization effect. In addition, it is impossible to peel off most of the mortar on the surface of the recycled concrete aggregate and grind it into fine powder. This is because the mortar powder contains a large amount of uncarbonated free calcium ions, which can combine with carbon dioxide gas and liquid to form a calcium carbonate layer, thereby significantly improving the properties of the concrete aggregate after carbonization. As a result, the mortar is not effectively utilized in the carbonization process, the mortar powder is not fully utilized as a resource, and the carbonization effect is poor.

[0004] In view of this, the inventor of this case conducted in-depth research on the problem, which led to the creation of this case. Summary of the Invention

[0005] The purpose of the present invention is to provide an integrated device for the surface-enhanced micro-powder carbon mineralization of low-carbon recycled aggregates, which has the good effect of stripping cement mortar powder to separate coarse and fine powder aggregates and simultaneously performing deep and rapid carbonization. After carbonization, the mortar powder can be used as a cement raw material, thereby achieving low-carbon energy conservation and emission reduction, and solving the problem of poor carbonization effect of existing carbonization devices.

[0006] In order to achieve the purpose, the present invention adopts such technical solution: A low-carbon recycled aggregate surface-enhanced micro-powder carbon mineralization integrated equipment comprises a frame and a mixing cylinder mounted on the frame, a stirring mechanism is rotatably mounted in the mixing cylinder, the mixing cylinder has a liquid filling port, a gas filling port, a feed port and a discharge port, the mixing cylinder comprises a carbonizing cylinder 1 and a carbonizing cylinder 2, the carbonizing cylinder 1 is horizontally mounted on the frame through a vibrating device that drives the carbonizing cylinder 1 to vibrate, a lower hopper is provided on the top surface of one axial end of the carbonizing cylinder 1, and the feed port connected to the lower hopper is provided on the top surface of the carbonizing cylinder 1, a discharge adjustment structure capable of adjusting aggregates of different particle sizes to fall from the lower hopper into the carbonizing cylinder 1 is provided on the output end of the lower hopper, and a transverse The first discharge port and the second discharge port are arranged at intervals, the first discharge port is between the feed port and the second discharge port, a filter screen is provided within the range of the first discharge port, the carbonization cylinder body 1 is provided with the above-mentioned carbonization cylinder body 2 at the bottom corresponding to the first discharge port and the second discharge port, the upper ends of the two carbonization cylinder bodies 2 are respectively connected with the first discharge port and the second discharge port through a connecting bucket which has a buffer discharge therein and seals and closes the input end of the carbonization cylinder body 2 after feeding, the carbonization cylinder body 2 is provided with a stirring rod which is arranged upright and rotatably installed, the lower ends of the two carbonization cylinder bodies 2 are provided with a discharge port which can be controlled to be sealed or opened, the two discharge ports constitute the discharge port, and the top surfaces of the two carbonization cylinder bodies 2 are respectively provided with the above-mentioned gas filling port and liquid filling port; A spiral rod is provided in the carbonizing cylinder, which is rotatably installed in the carbonizing cylinder and extends along the axial direction of the carbonizing cylinder. The spiral rod has a rod body and spiral blades extending along the length direction of the rod body. A grinding piece is vertically installed on the outer wall of the rod body. The surface of the grinding piece is provided with a peeling surface with a concave-convex structure. The spiral rod, the grinding piece and the stirring rod constitute the stirring mechanism.

[0007] With the axial direction of the carbonizing cylinder body 1 as the left and right directions, the vibration device is installed on the bottom surface of the carbonizing cylinder body 1, the lower hopper is above the left end of the top surface of the carbonizing cylinder body 1, the feed port is on the left end of the top surface of the carbonizing cylinder body 1, and the lower hopper is connected to the feed port through the above-mentioned discharge adjustment structure. The first discharge port and the second discharge port are both on the bottom surface of the right end of the carbonizing cylinder body 1, and the first discharge port is on the left side of the second discharge port. The first discharge port is connected below the first discharge port, and the second discharge port is connected below the second discharge port. The filter screen is installed in the upper end of the first discharge hopper, and the first discharge hopper and the second discharge hopper are respectively connected to the two carbonizing cylinder bodies 2 through a connecting hopper. The lower end of the carbonizing cylinder body 2 is provided with a control mechanism for controlling the release or cutoff of aggregate in the carbonizing cylinder body 2, and the rod body is arranged horizontally in the carbonizing cylinder body 1 along the left and right directions.

[0008] The vibration device is a vibration motor, which is installed on the left end of the bottom surface of the carbonizing cylinder. The frame has a plurality of vertical poles arranged upright on the front and rear sides of the carbonizing cylinder. A connecting rod is horizontally arranged on the outer wall of the carbonizing cylinder corresponding to the upper part of the vertical pole. The upper end of the vertical pole is connected to the end of the connecting rod through a vibration reduction mechanism.

[0009] The vibration reduction mechanism is a vertically arranged vibration reduction rubber. There are two vibration reduction rubbers, which are arranged laterally at intervals. The bottom surfaces of the two vibration reduction rubbers are commonly connected to a lower connecting plate, and the lower connecting plate is locked together with the top surface of the vertical pole. The top surfaces of the two vibration reduction rubbers are commonly connected to an upper connecting plate. The top surface of the upper connecting plate is convexly provided with a lower protrusion, and the top surface of the lower protrusion is concavely provided with a lower groove. The top surface of the lower protrusion is locked with the upper protrusion, and the bottom surface of the upper protrusion is concavely provided with an upper groove at the position corresponding to the lower groove. The upper groove and the lower groove form an embedded groove for the connecting rod to be embedded in.

[0010] A rod valve is provided on the output end of the lower hopper, and the output end of the lower hopper is connected to the feed port of the carbonizing cylinder through the rod valve. The rod valve is the above-mentioned discharge regulating structure.

[0011] The connecting hopper is a weight valve, the input ends of the two weight valves are respectively connected to the output ends of the first discharge hopper and the second discharge hopper, and the output ends of the two weight valves are respectively connected to the input ends of the two carbonizing cylinders.

[0012] The stirring rod is upright in the second carbonizing cylinder. A discharge valve for controlling the opening or sealing of the output end of the second carbonizing cylinder is provided on the output end of the second carbonizing cylinder. The discharge valve is the above-mentioned control mechanism.

[0013] There is a material space between the outer wall of the spiral blade and the inner wall of the carbonized cylinder. There are several grinding parts, and each grinding part is arranged at intervals along the left and right directions of the rod body. There are several grinding blocks on the grinding part, and grinding grooves are formed between each two adjacent grinding blocks. Each grinding block and the grinding groove constitute the above-mentioned concave-convex structure, and the outer side surface of each grinding block is the above-mentioned peeling surface.

[0014] The grinding member is a vertically arranged plate body, and the left side or right side of the plate body is the above-mentioned stripping surface. The stripping surface is concavely provided with a plurality of first grinding grooves that penetrate along the front-to-back direction and are arranged at intervals along the up-down direction, and a plurality of second grinding grooves that penetrate along the up-down direction and are arranged at intervals along the front-to-back direction. The up-and-down spacing direction of the first grinding grooves is perpendicular to the extension direction of the rod body, and each first grinding groove and each second grinding groove are cross-arranged vertically, and a plurality of the above-mentioned grinding blocks arranged in a matrix are formed between each first grinding groove and each second grinding groove, and each first grinding groove and each second grinding groove constitute the above-mentioned grinding groove.

[0015] The carbonizing cylinder 2 located below the first discharge hopper of the two carbonizing cylinders is the fine carbonizing cylinder 2. The input end of the fine carbonizing cylinder 2 is connected to a mud filling mechanism. The mud filling mechanism has a mud pump. The input end of the mud pump is connected to a placement pool filled with waste concrete mud, and the output end of the mud pump is connected to the input end of the fine carbonizing cylinder 1.

[0016] The present invention is a low-carbon recycled aggregate surface strengthening micro-powder carbon mineralization integrated equipment. When used, the recycled concrete aggregate is crushed into a particle size within the range of 5mm-31.5mm and the recycled concrete aggregate is put into the input end of the lower hopper. The recycled concrete aggregate with a particle size greater than 31.5mm enters the carbonization cylinder 1 from the discharge adjustment structure. Then, the rotation of the rod body drives the spiral blade to rotate, mixing the recycled concrete aggregate and transporting it to the output end of the carbonization cylinder 1. At the same time, the carbonization cylinder 1 vibrates through the vibration device, so that the recycled concrete aggregates can move relative to each other and collide with the grinding parts, thereby stripping the mortar on the surface of the recycled concrete aggregate, turning the recycled concrete aggregate into mortar powder, and then in the vibration device. Under the action of the device, the mortar powder is vibrated and input into the filter screen for screening. Mortar powder with a particle size smaller than the diameter of the filter screen mesh falls from the first discharge port to the carbonization cylinder 2 corresponding to the lower portion of the first discharge port. Mortar powder with a particle size larger than the diameter of the filter screen mesh is vibrated and input into the second discharge port and falls into the other carbonization cylinder 2 corresponding to the lower portion of the second discharge port. At the same time, both carbonization cylinders are input with atomized carbonization reaction solution and carbon dioxide gas and stirred by a stirring rod. The carbonization reaction solution, carbon dioxide gas and mortar powder react to form a calcium carbonate layer, achieving carbonization of the recycled concrete aggregate. The properties of the carbonized concrete aggregate are significantly improved, and the carbonized recycled concrete aggregate is finally output from the carbonization cylinder 2. Compared with the existing technology, the recycled concrete aggregate is stripped into mortar powder, allowing water, carbon dioxide gas and the recycled concrete aggregate to react better, resulting in a better carbonization effect and improved performance of the recycled concrete aggregate. At the same time, during the transportation process, the recycled concrete aggregate vibrates and moves relative to each other, collides and rubs with the grinding parts, thereby better stripping the mortar powder and enhancing the stripping effect of the recycled concrete aggregate mortar powder. The mortar powder can be effectively stripped, which is beneficial to improving the penetration efficiency of water and carbon dioxide. In this way, the mortar powder can be carbonized synchronously and quickly, and deep carbonization can be achieved within a few hours. The carbonization speed is fast, which improves the performance of the recycled concrete aggregate. In addition, the recycled concrete aggregate can be used as a cement raw material after carbonization, which fully realizes the utilization of resources and achieves low-carbon energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the carbonized cylinder 1 of the present invention.

[0019] Figure 3 It is a side structural schematic diagram of the present invention.

[0020] Figure 4 It is another side structural schematic diagram of the present invention.

[0021] Figure 5This is a schematic diagram of the installation structure of the rubber vibration damping block of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the grinding element of the present invention. DETAILED DESCRIPTION

[0023] In order to further explain the technical solution of the present invention, it is described in detail below with reference to the accompanying drawings.

[0024] An integrated equipment for surface-enhanced micro-powder carbon mineralization of low-carbon recycled aggregates, such as Figures 1-6 As shown, it includes a frame 1 and a mixing cylinder 2 installed on the frame 1, a stirring mechanism is rotatably installed in the mixing cylinder 2, the mixing cylinder 2 has a liquid adding port, a gas adding port, a feed port and a discharge port, the mixing cylinder 2 has a carbonizing cylinder 1 21 and a carbonizing cylinder 2 22, the top surface of the end of the carbonizing cylinder 1 21 axial end has a lower hopper 211, and the top surface of the carbonizing cylinder 1 21 is provided with the above-mentioned feed port connected to the lower hopper 211, and the lower hopper is provided with The discharge adjustment structure can adjust the aggregates of different particle sizes from the lower hopper 211 to the carbonizing cylinder 21. The lower hopper 211 is located above the left end of the top surface of the carbonizing cylinder 21, and the lower hopper 211 is connected to the feed port through the above-mentioned discharge adjustment structure. Specifically, the carbonizing cylinder 21 is arranged horizontally in the left and right directions, and a rod valve 3 for adjusting the output port diameter of the lower hopper 211 is provided on the output end of the lower hopper 211. The specific structure of the rod valve and The method of adjusting the amount of aggregates of different particle sizes falling from the lower hopper into the carbonizing cylinder 1 is a well-known technology for those skilled in the art and will not be elaborated on here. The feed port is located on the left end of the top surface of the carbonizing cylinder 1 21. The output end of the lower hopper 211 is connected to the feed port of the carbonizing cylinder 1 21 through a rod valve 3. The input end of the rod valve 3 is connected to the output end of the lower hopper 211, and the output end of the rod valve 3 is connected to the feed port. When in use, the recycled concrete aggregate crushed into a particle size of 5mm-31.5mm enters from the input end of the lower hopper 211, and the spacing between the output ends of the rod valve is adjusted to about 31.5mm. Recycled concrete aggregates larger than 31.5mm cannot fall into the carbonizing cylinder 1 21. The rod valve can prevent aggregates with a particle size larger than the spacing from falling. Recycled concrete aggregates with a particle size less than or equal to 31.5mm pass through the rod valve and the feed port and enter the carbonizing cylinder 1 21.

[0025] The bottom surface of the other axial end of the carbonizing cylinder 21 is provided with a first discharge port and a second discharge port arranged transversely at intervals, the first discharge port is between the feed port and the second discharge port, and a filter screen 4 is provided within the range of the first discharge port. The carbonizing cylinder 21 is horizontally installed on the frame 1 through a vibration device that drives the carbonizing cylinder 21 to vibrate; specifically, the vibration device is a vibration motor 212, and the vibration motor 212 is installed on the left end of the bottom surface of the carbonizing cylinder 21, and the frame 1 has a plurality of vertical poles arranged on the front and rear sides of the carbonizing cylinder 21, and preferably the vertical pole 4 has Four, the outer side wall of the carbonized cylinder 21 corresponds to the four vertical rods and is provided with four connecting rods 11 lying horizontally above the four vertical rods, and the lower ends of the two connecting rods are connected with connecting cross rods 111, and the upper ends of the vertical rods are connected to the ends of the connecting rods 11 through a vibration reduction mechanism, that is, the vibration reduction mechanism is an upright rubber vibration reduction block 5, and there are two rubber vibration reduction blocks 5, which are arranged at intervals in the horizontal direction. The bottom surfaces of the two rubber vibration reduction blocks 5 are commonly connected with a lower connecting plate 51, and the lower connecting plate 51 is locked together with the top surface of the vertical rod, that is, the top surface of the vertical rod is located outside the rubber vibration reduction block 5 and is recessed with some The bottom surface of the upper and lower connecting plates 52 is connected to the vertical rod by connecting bolts through the locking holes and the locking grooves. The top surfaces of the two rubber vibration damping blocks 5 are connected to the upper connecting plate 52. The top surface of the upper connecting plate 52 is convexly provided with a lower protrusion 521. The top surface of the lower protrusion 521 is concavely provided with a lower groove. The top surface of the lower protrusion 521 is locked with an upper protrusion 5211. The locking method of the upper protrusion 5211 and the lower protrusion 521 is similar to the method of locking the lower connecting plate 51 on the vertical rod. The bottom surface of the upper protrusion 5211 corresponds to An upper groove is recessed at the position of the lower groove, and the upper groove and the lower groove form an embedding groove for the connecting rod 11 to be embedded therein; the first discharge port and the second discharge port are both located on the bottom surface of the right end of the carbonizing cylinder 21, and the first discharge port is located on the left side of the second discharge port, and a first discharge hopper 213 is connected below the first discharge port, and a second discharge hopper 214 is connected below the second discharge port. The filter screen 4 is installed in the upper end of the first discharge hopper 213. The specific structure of the filter screen 4 and the way in which the filter screen 4 is installed in the upper end of the first discharge hopper 213 are well known to those skilled in the art.During use, the carbonizing cylinder 21 is installed on the frame 1 through the connecting rod 11. A filter screen capable of screening out recycled concrete aggregates of corresponding particle size is installed in the first discharge port as needed. Under the action of the vibration motor, the vibration motor can disperse the recycled concrete aggregate, and then the recycled concrete aggregate is vibrated and output to the right from the carbonizing cylinder 21, and the recycled concrete aggregate falls into the range of the filter screen. The recycled concrete aggregate with a particle size smaller than the diameter of the filter screen hole falls from the sieve hole of the filter screen and falls from the first discharge port into the first discharge hopper 213. The recycled concrete aggregate with a particle size larger than the diameter of the filter screen hole continues to be vibrated and output to the right from the carbonizing cylinder 21, and falls from the second discharge port into the second discharge hopper 214. For example, if the diameter of the mesh of the filter screen is 5mm-10mm, the vibration motor can disperse the recycled concrete aggregate, which is then vibrated and discharged rightward from the carbonizing cylinder 21. In this way, the first discharge hopper 213 can discharge finer recycled concrete aggregate with a particle size of 5mm-10mm, while the remaining coarser recycled concrete aggregate with a particle size of 10mm-31.5mm is discharged from the second discharge hopper 214. Furthermore, the provision of the rubber vibration damping block 5 can slow the vibration of the carbonizing cylinder 21, allowing the recycled concrete aggregate to slowly enter the filter screen 4 for screening, preventing material blockage in the filter screen and achieving a better screening effect. Simultaneously, driving the carbonizing cylinder 21 to vibrate at a certain frequency can also achieve relative motion friction between the recycled concrete aggregates, further improving the stripping effect of the recycled concrete aggregates.

[0026] The above-mentioned carbonization cylinder 2 is erected at the bottom of the carbonization cylinder 1 21 corresponding to the first discharge port and the second discharge port. The upper ends of the two carbonization cylinders 2 are respectively connected to the first discharge port and the second discharge port through a connecting bucket which has a buffer discharge function therein and seals and closes the input end of the carbonization cylinder 2 after feeding. The top surfaces of the two carbonization cylinders 2 are respectively provided with the above-mentioned liquid filling port and the above-mentioned gas filling port; specifically, the two carbonization cylinders 22 are divided into fine carbonization cylinder 22a and coarse carbonization cylinder 2 22b, and the two connecting buckets are correspondingly divided into a first connecting bucket 61 and a second connecting bucket 62. The first discharge hopper 213 is connected to the fine carbonization cylinder 22a through the first connecting bucket 61, and the second discharge hopper 214 is connected to the coarse carbonization cylinder 2 through the second connecting bucket 62. 22b are connected and matched, and the connecting bucket is a weight valve, which is a multi-layer weight valve. In this embodiment, the multi-layer weight valve is a three-layer weight valve. The input ends of the two weight valves are respectively connected to the output end of the first discharge hopper 213 and the output end of the second discharge hopper 214. The output ends of the two weight valves are respectively connected to the input ends of the fine carbonization cylinder 22a and the coarse carbonization cylinder 22b, that is, the top surfaces of the fine carbonization cylinder 22a and the coarse carbonization cylinder 22b are provided with a feeding port for the recycled concrete aggregate to enter. The feeding port is the input end of the carbonization cylinder 2, and the two feeding ports are respectively connected to the bottom of the two connecting buckets, and the outer side walls of the output ends of the two connecting buckets are respectively tightly matched with the inner side walls of the two feeding ports, so that the output ends of the two connecting buckets are respectively connected. It is sealed with the input end of the fine carbonization cylinder 2 and the input end of the coarse carbonization cylinder 2, and it is not easy for carbon dioxide gas to leak out. The specific structure and working mode of the heavy hammer valve are well known to those skilled in the art. The top surface of the carbonization cylinder 2 is sealed with a lower spray pipe 221 that is vertically arranged and passes through the liquid filling port to the carbonization cylinder 2. The feed port is between the lower spray pipe 221 and the lower air jet pipe 222, and the outer side walls of the lower spray pipe 221 and the lower air jet pipe 222 are sealed with the carbonization cylinder 2, that is, the inner side wall of the liquid filling port is provided with an internal thread, the lower spray pipe 221 is screwed into the liquid filling port, and the outer side wall of the lower spray pipe 221 is provided with a sealing gasket that seals with the inner side wall of the liquid filling port. The top surface of the carbonization cylinder 2 is sealed with a lower spray pipe 221 that is vertically arranged and passes through the air filling port. The lower air injection pipe 222 inside, the sealing installation method of the lower air injection pipe 222 is similar to the sealing installation method of the lower spray pipe 221, the lower air injection pipe 222 is connected to a gas transmission device capable of inputting carbon dioxide gas into the carbonization cylinder 21, and the lower spray pipe 221 is connected to a spray device capable of spraying the carbonization reaction solution in a mist form. Here, the carbonization reaction solution is water as an example. The spray device forms an atomized state of water and sprays it into the carbonization cylinder 21 through the lower spray pipe 221, the gas transmission device inputs carbon dioxide gas into the carbonization cylinder 21 through the lower air injection pipe 222, and the sealing matching method of the lower spray pipe 221 and the lower air injection pipe 222 with the carbonization cylinder 21 are all well known to those skilled in the art and will not be elaborated here.During use, recycled concrete aggregates with a particle size smaller than the diameter of the mesh holes of the filter screen 4 fall from the first discharge hopper 213 through the first connecting hopper 61 and enter the second fine carbonization cylinder 22a, and recycled concrete aggregates with a particle size larger than the diameter of the mesh holes of the filter screen fall from the second discharge hopper 214 through the second connecting hopper 62 and enter the second coarse carbonization cylinder 22b. At the same time, the lower spray pipe 221 and the lower air jet pipe 222 on the second fine carbonization cylinder 22a and the second coarse carbonization cylinder 22b start working. The lower spray pipe 221 sprays water in an atomized state and the lower air jet pipe 222 sprays carbon dioxide gas into the second carbonization cylinder. The water, carbon dioxide gas and recycled concrete aggregate mix and react with each other to achieve carbonization of the recycled concrete aggregate. Furthermore, when the recycled concrete aggregate passes through the weight valve, the weight valve opens under the gravity of the recycled concrete aggregate. When no recycled concrete aggregate passes through, the weight valve quickly seals and closes. After the recycled concrete aggregate is fed in, the input end of the second carbonizing cylinder can quickly seal and cooperate, and carbon dioxide gas is not easy to leak from the second carbonizing cylinder. The concentration of carbon dioxide gas can be guaranteed, which is conducive to the reaction of the recycled concrete aggregate with water and carbon dioxide in the second carbonizing cylinder.

[0027] The two carbonizing cylinders are each provided with a stirring rod 223 which is arranged upright and rotatably mounted. The lower ends of the two carbonizing cylinders are each provided with a discharge port which can be controlled to be sealed or opened. The two discharge ports constitute the discharge port, and the stirring rod 223 is erected in the carbonizing cylinder. Specifically, the discharge port of the carbonizing cylinder is provided with a control mechanism for controlling the discharge or cutoff of the aggregate in the carbonizing cylinder, that is, the discharge port of the carbonizing cylinder is provided with a discharge valve 224 for controlling the opening or sealing of the output end of the carbonizing cylinder. The discharge valve 224 is the above-mentioned control mechanism, and the discharge valve is sealedly connected to the output end of the carbonizing cylinder. The specific structure, sealing connection method and working method of the discharge valve 224 are well known to those skilled in the art. The sealing connection method, sealing method and working method of the present invention are well known to those skilled in the art. The sealing and matching methods are all well-known technologies and will not be described in detail here. The stirring rod 223 comprises a rotating rod that is vertically and rotatably mounted within the second carbonizing cylinder and rotating blades located on the outer wall of the rotating rod. The upper end of the rotating rod extends beyond the top surface of the second carbonizing cylinder and is staggered with the feed inlet, gas inlet, and liquid inlet. The upper end of the rotating rod is fitted with a driven gear. A rotating motor is provided outside the second carbonizing cylinder. The rotating motor is vertically mounted, and the output end of the rotating motor is fitted with a driving gear that meshes with the driven gear. The output end of the rotating motor rotates, driving the driving gear and the driven gear to rotate, thereby driving the stirring rod 223 to rotate. The method of rotating the stirring rod 223 within the second carbonizing cylinder is well-known to those skilled in the art and will not be described in detail here. During use, the rotating motor drives the rotating rod to rotate, and the rotating blades rotate with the rotating rod, thereby stirring and mixing the recycled concrete aggregate, water, and carbon dioxide gas entering the second carbonizing cylinder, thereby achieving carbonization of the recycled concrete aggregate. Furthermore, the discharge valve enables the carbonization cylinder 2 to be controlled in a sealed state, thereby allowing water, carbon dioxide gas and recycled concrete aggregate to react, and can also control the carbonization cylinder 2 to be in an open state, facilitating the output of the carbonized recycled concrete aggregate.

[0028] The carbonizing cylinder 21 is provided with a screw rod 7 which is rotatably mounted in the carbonizing cylinder 21 and extends in the axial direction of the carbonizing cylinder 21. The screw rod 7 has a rod body 71 and a spiral blade 72 extending in the length direction of the rod body 71. Specifically, there is a material space 100 between the outer wall of the spiral blade 72 and the inner wall of the carbonizing cylinder 21. The rod body 71 is rotated in the left and right directions and is horizontally arranged in the carbonizing cylinder 21. Both ends of the rod body 71 are horizontally extended out of the left and right sides of the carbonizing cylinder 21. The frame 1 is provided with a screw rod 7 which is rotatably mounted in the carbonizing cylinder 21 and extends out of the left and right sides of the carbonizing cylinder 21. The driving motor on the left side is arranged horizontally, and the output end of the driving motor is arranged to the right and connected to the left end of the rod body 71; when in use, the output end of the driving motor rotates, driving the rod body 71 to rotate, and then driving the spiral blade 72 to rotate, and the recycled concrete aggregate enters the carbonizing cylinder 21 from the feed port of the carbonizing cylinder 21. The spiral blade 72 rotates, driving the recycled concrete aggregate to move to the right. At the same time, the setting of the material space 100 enables the recycled concrete aggregate to collide with the carbonizing cylinder 21, thereby increasing the stripping effect of the recycled concrete aggregate.

[0029] A grinding piece 8 is vertically mounted on the outer wall of the rod body 71, and the surface of the grinding piece 8 is provided with a peeling surface 81 with a concave-convex structure. The spiral rod 7, the grinding piece 8 and the stirring rod 223 constitute the stirring mechanism; specifically, there are a plurality of grinding pieces 8, each grinding piece 8 is spaced apart along the left and right directions of the rod body 71, and two adjacent grinding pieces 8 are separated by spiral blades 72, that is, a spiral groove extending spirally along the left and right directions and open on the outside is formed between the spiral blades 72 and the rod body 71, each grinding piece 8 is spaced apart along the spiral forward direction of the spiral groove, and two adjacent grinding pieces 8 are respectively erected above or below the rod body 71, and a plurality of grinding blocks 82 are provided on the grinding piece 8, and a grinding groove is formed between the two adjacent grinding blocks 82, and each grinding block 82 and the grinding groove constitute the above-mentioned concave Convex structure, the outer side surface of each grinding block 82 is the above-mentioned stripping surface 81. Preferably, the grinding member 8 is a vertically arranged plate body, and the left side or right side of the plate body is the above-mentioned stripping surface 81. Here, the right side is taken as the above-mentioned stripping surface 81 as an example. The stripping surface 81 is concavely provided with a plurality of first grinding grooves that penetrate along the front-to-back direction and are spaced apart along the up-down direction, and a plurality of second grinding grooves that penetrate along the up-down direction and are spaced apart along the front-to-back direction. The upper and lower spacing directions of the first grinding grooves are perpendicular to the extension direction of the rod body 71. Each first grinding groove and each second grinding groove are cross-vertically arranged, and a plurality of the above-mentioned grinding blocks 82 arranged in a matrix are formed between each first grinding groove and each second grinding groove. Each first grinding groove and each second grinding groove constitute the above-mentioned grinding groove, and the first grinding groove and the second grinding groove are both V-shaped grooves. During use, the carbonizing cylinder 21 vibrates the recycled concrete aggregate through the vibration device, and the relative motion and friction between the recycled concrete aggregate and the grinding member 8 facilitates the stripping of mortar from the surface of the recycled concrete aggregate, enhancing the removal of mortar from the surface of the recycled concrete aggregate. This converts the recycled concrete aggregate into mortar powder, which effectively reacts with water and carbon dioxide gas, increasing the permeation efficiency of water and carbon dioxide and improving the performance of the recycled concrete aggregate. Furthermore, the V-shaped grinding groove creates a serrated stripping surface 81, further enhancing the stripping effect of mortar powder on the recycled concrete aggregate.

[0030] The present invention is a low-carbon recycled aggregate surface strengthening micro-powder carbon mineralization integrated equipment. When used, the recycled concrete aggregate is crushed into a particle size within the range of 5mm-31.5mm and the recycled concrete aggregate is put into the input end of the lower hopper 211. The recycled concrete aggregate with a particle size less than or equal to 31.5mm falls from the rod valve into the carbonization cylinder 21. The rotation of the rod body 71 drives the spiral blade 72 to rotate, mixing the recycled concrete aggregate and conveying it to the right. At the same time, the carbonization cylinder 21 vibrates through the vibration motor, so that the recycled concrete aggregates can move relative to each other and collide and rub with each grinding piece 8, thereby stripping the mortar powder on the surface of the recycled concrete aggregate. The spiral blade continues to convey the recycled concrete aggregate to the right. In the process of conveying to the right, the recycled concrete aggregate continuously strips the mortar powder through each grinding piece 8, so that the recycled concrete aggregate is completely It is converted into mortar powder and transported to the right. At the same time, under the action of the vibration motor, the mortar powder is vibrated to the right from the carbonization cylinder 21 and input into the filter screen 4 for screening. The mortar powder with a particle size smaller than the sieve diameter of the filter screen falls from the first discharge hopper 213 to the fine carbonization cylinder 2 22a. Then, the three-layer weight valve is sealed and closed. The mortar powder with a particle size larger than the sieve diameter of the filter screen is vibrated and input into the second discharge hopper 214 and falls into the coarse carbonization cylinder 2 22b. The three-layer weight valve is sealed and closed. At the same time, atomized water and carbon dioxide gas are input into the two carbonization cylinders and stirred by a stirring rod. The water, carbon dioxide gas and mortar powder are mixed and reacted to form a calcium carbonate layer, thereby realizing the carbonization of the recycled concrete aggregate, and significantly improving the properties of the recycled concrete aggregate after carbonization. After carbonization, the discharge valve is opened to output the carbonized recycled concrete aggregate from the carbonization cylinder 2. Compared with the existing technology, the recycled concrete aggregate is stripped into mortar powder, allowing water and carbon dioxide gas to react better with the recycled concrete aggregate, resulting in a better carbonization effect and improved performance of the recycled concrete aggregate. The recycled concrete aggregate vibrates and rubs against each grinding member 8, thereby better stripping the mortar powder, effectively stripping the mortar powder and enhancing the mortar powder stripping effect on the surface of the recycled concrete aggregate. During the reaction process, the recycled concrete aggregate, in a powdery state, can improve the penetration efficiency of water and carbon dioxide, allowing the mortar powder to be carbonized simultaneously and quickly, achieving deep carbonization within a few hours. The carbonization speed is fast, improving the performance of the recycled concrete aggregate. In addition, the recycled concrete aggregate can be used as a cement raw material after carbonization, fully realizing resource utilization and achieving low-carbon energy conservation and emission reduction. Moreover, after entering the two carbonization cylinders, the material is in a sealed environment, and carbon dioxide gas and carbonization reaction solution can be injected simultaneously, making it difficult for carbon dioxide gas to leak out, ensuring the concentration of carbon dioxide gas in the entire device and the carbonization reaction effect.

[0031] In the present invention, it is preferred that the input end of the fine carbonization cylinder 22a is connected to a slurry filling mechanism, the slurry filling mechanism has a slurry pump 9, the input end of the slurry pump 9 is connected to the placement pool filled with waste concrete slurry, and the output end of the slurry pump 9 is connected to the input end of the fine carbonization cylinder 1; specifically, a conveying pipe is sealed and connected between the output end of the first connecting bucket 61 and the feed port of the fine carbonization cylinder 1 22a, that is, the conveying pipe is vertically arranged, and the outer side wall of the upper end of the conveying pipe is sealed with the output end of the first connecting bucket 61, and the outer side wall of the lower end of the conveying pipe is sealed with the fine carbonization cylinder 1. The inner wall of the feed port 22a is sealed, and the outer wall of the conveying pipe is connected to a branch injection pipe. The output end of the mud pump 9 is sealed and connected to the branch injection pipe. The specific structure and working principle of the mud pump 9 are well known to those skilled in the art and will not be elaborated here. When in use, the waste concrete slurry is added to the fine carbonization cylinder 22a through the mud pump 9, so that the waste concrete slurry can be carbonized and reused together with the recycled concrete aggregate after secondary carbonization, so that the waste concrete slurry can also be reused, thereby improving resource utilization and further achieving low-carbon energy saving and environmental protection.

[0032] The product form of the present invention is not limited to the illustrations and embodiments of this case. Any appropriate changes or modifications made by anyone with similar ideas should be deemed to be within the patent scope of the present invention.

Claims

1. An integrated device for surface-enhanced micro-powder carbon mineralization of low-carbon recycled aggregates, comprising a frame and a mixing cylinder mounted on the frame, wherein a stirring mechanism is rotatably mounted in the mixing cylinder, and the mixing cylinder has a liquid filling port, an air filling port, a feed port, and a discharge port, characterized in that: The mixing cylinder comprises a carbonizing cylinder body 1 and a carbonizing cylinder body 2, the carbonizing cylinder body 1 is horizontally installed on the frame by a vibrating device that drives the carbonizing cylinder body 1 to vibrate, the top surface of the end of one axial end of the carbonizing cylinder body 1 is provided with a lower hopper, and the top surface of the carbonizing cylinder body 1 is provided with the above-mentioned feed port connected to the lower hopper, the output end of the lower hopper is provided with a discharge adjustment structure that can adjust aggregates of different particle sizes to fall from the lower hopper into the carbonizing cylinder body 1, the bottom surface of the other axial end of the carbonizing cylinder body 1 is provided with a first discharge port and a second discharge port arranged at intervals in the horizontal direction, the first discharge port is between the feed port and the second discharge port, and the first discharge port is provided between the feed port and the second discharge port. A filter screen is provided within the range of the material port, and the above-mentioned carbonizing cylinder 2 is erected at the bottom of the carbonizing cylinder 1 corresponding to the first discharge port and the second discharge port. The upper ends of the two carbonizing cylinders 2 are respectively connected to the first discharge port and the second discharge port through a connecting bucket which has a buffer discharge therein and seals and closes the input end of the carbonizing cylinder 2 after feeding. A stirring rod is erected and rotatably installed in the carbonizing cylinder 2, and the lower ends of the two carbonizing cylinders 2 are each provided with a discharge port which can be controlled to be sealed or opened. The two discharge ports constitute the said discharge port, and the top surfaces of the two carbonizing cylinders 2 are respectively provided with the above-mentioned gas filling port and liquid filling port; A spiral rod is provided in the carbonizing cylinder, which is rotatably installed in the carbonizing cylinder and extends along the axial direction of the carbonizing cylinder. The spiral rod has a rod body and spiral blades extending along the length direction of the rod body. A grinding piece is vertically installed on the outer wall of the rod body. The surface of the grinding piece is provided with a peeling surface with a concave-convex structure. The spiral rod, the grinding piece and the stirring rod constitute the stirring mechanism.

2. The low-carbon recycled aggregate surface enhanced micro-powder carbon mineralization integrated equipment according to claim 1, characterized in that: With the axial direction of the carbonizing cylinder body 1 as the left and right directions, the vibration device is installed on the bottom surface of the carbonizing cylinder body 1, the lower hopper is above the left end of the top surface of the carbonizing cylinder body 1, the feed port is on the left end of the top surface of the carbonizing cylinder body 1, and the lower hopper is connected to the feed port through the above-mentioned discharge adjustment structure. The first discharge port and the second discharge port are both on the bottom surface of the right end of the carbonizing cylinder body 1, and the first discharge port is on the left side of the second discharge port. The first discharge port is connected below the first discharge port, and the second discharge port is connected below the second discharge port. The filter screen is installed in the upper end of the first discharge hopper, and the first discharge hopper and the second discharge hopper are respectively connected to the two carbonizing cylinder bodies 2 through a connecting hopper. The lower end of the carbonizing cylinder body 2 is provided with a control mechanism for controlling the release or cutoff of aggregate in the carbonizing cylinder body 2, and the rod body is arranged horizontally in the carbonizing cylinder body 1 along the left and right directions.

3. The low-carbon recycled aggregate surface enhanced micro-powder carbon mineralization integrated equipment according to claim 2, characterized in that: The vibration device is a vibration motor, which is installed on the left end of the bottom surface of the carbonizing cylinder. The frame has a plurality of vertical poles arranged upright on the front and rear sides of the carbonizing cylinder. A connecting rod is horizontally arranged on the outer wall of the carbonizing cylinder corresponding to the upper part of the vertical pole. The upper end of the vertical pole is connected to the end of the connecting rod through a vibration reduction mechanism.

4. The low-carbon recycled aggregate surface-enhanced micro-powder carbon mineralization integrated equipment according to claim 3, characterized in that: The vibration reduction mechanism is a vertically arranged vibration reduction rubber. There are two vibration reduction rubbers, which are arranged laterally at intervals. The bottom surfaces of the two vibration reduction rubbers are commonly connected to a lower connecting plate, and the lower connecting plate is locked together with the top surface of the vertical pole. The top surfaces of the two vibration reduction rubbers are commonly connected to an upper connecting plate. The top surface of the upper connecting plate is convexly provided with a lower protrusion, and the top surface of the lower protrusion is concavely provided with a lower groove. The top surface of the lower protrusion is locked with the upper protrusion, and the bottom surface of the upper protrusion is concavely provided with an upper groove at the position corresponding to the lower groove. The upper groove and the lower groove form an embedded groove for the connecting rod to be embedded in.

5. The low-carbon recycled aggregate surface enhanced micro-powder carbon mineralization integrated equipment according to claim 2, characterized in that: A rod valve is provided on the output end of the lower hopper, and the output end of the lower hopper is connected to the feed port of the carbonizing cylinder through the rod valve. The rod valve is the above-mentioned discharge regulating structure.

6. The low-carbon recycled aggregate surface-enhanced micro-powder carbon mineralization integrated equipment according to claim 2, characterized in that: The connecting hopper is a weight valve, the input ends of the two weight valves are respectively connected to the output ends of the first discharge hopper and the second discharge hopper, and the output ends of the two weight valves are respectively connected to the input ends of the two carbonizing cylinders.

7. The low-carbon recycled aggregate surface-enhanced micro-powder carbon mineralization integrated equipment according to claim 2, characterized in that: The stirring rod is upright in the second carbonizing cylinder. A discharge valve for controlling the opening or sealing of the output end of the second carbonizing cylinder is provided on the output end of the second carbonizing cylinder. The discharge valve is the above-mentioned control mechanism.

8. The low-carbon recycled aggregate surface-enhanced micro-powder carbon mineralization integrated equipment according to claim 2, characterized in that: There is a material space between the outer wall of the spiral blade and the inner wall of the carbonized cylinder. There are several grinding parts, and each grinding part is arranged at intervals along the left and right directions of the rod body. There are several grinding blocks on the grinding part, and grinding grooves are formed between each two adjacent grinding blocks. Each grinding block and the grinding groove constitute the above-mentioned concave-convex structure, and the outer side surface of each grinding block is the above-mentioned peeling surface.

9. The low-carbon recycled aggregate surface-enhanced micro-powder carbon mineralization integrated equipment according to claim 8, characterized in that: The grinding member is a vertically arranged plate body, and the left side or right side of the plate body is the above-mentioned stripping surface. The stripping surface is concavely provided with a plurality of first grinding grooves that penetrate along the front-to-back direction and are arranged at intervals along the up-down direction, and a plurality of second grinding grooves that penetrate along the up-down direction and are arranged at intervals along the front-to-back direction. The up-and-down spacing direction of the first grinding grooves is perpendicular to the extension direction of the rod body, and each first grinding groove and each second grinding groove are cross-arranged vertically, and a plurality of the above-mentioned grinding blocks arranged in a matrix are formed between each first grinding groove and each second grinding groove, and each first grinding groove and each second grinding groove constitute the above-mentioned grinding groove.

10. The low-carbon recycled aggregate surface-enhanced micro-powder carbon mineralization integrated equipment according to claim 2, characterized in that: The carbonizing cylinder 2 located below the first discharge hopper of the two carbonizing cylinders is the fine carbonizing cylinder 2. The input end of the fine carbonizing cylinder 2 is connected to a mud filling mechanism. The mud filling mechanism has a mud pump. The input end of the mud pump is connected to a placement pool filled with waste concrete mud, and the output end of the mud pump is connected to the input end of the fine carbonizing cylinder 1.

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