Integrated system and process for fly ash and slag co-resource and heavy metal prevention and control

Abstract

The application discloses an integrated system and process for fly ash and slag collaborative resource utilization and heavy metal prevention and control, which comprises a main supporting cylinder arranged horizontally along an axis, a composite processing outer rotor coaxial with the main supporting cylinder and arranged annularly and rotatably connected to the main supporting cylinder, a composite processing inner rotor coaxial with the composite processing outer rotor and rotatably connected to the composite processing outer rotor, and a composite processing chamber annularly formed between the outer side wall of the composite processing inner rotor and the inner side wall of the composite processing outer rotor; from the input end to the output end of the main supporting cylinder, the composite processing chamber is sequentially divided into a premixing convection section, a gradient crushing section and a compaction forming section; the application realizes integrated collaborative processing of fly ash and slag, integrates premixing convection, gradient crushing, compaction forming and continuous brick making in one system, fully utilizes the cementitious activity of fly ash and the aggregate skeleton effect of slag, realizes collaborative resource utilization of fly ash and slag, and reduces the resource utilization cost without additional addition of a large amount of cement and other cementitious materials.

Description

Technical Field

[0001] This invention relates to the field of solid waste treatment technology, specifically to an integrated system and process for the co-resource utilization of fly ash and slag and the control of heavy metals. Background Technology

[0002] In the field of solid waste treatment, municipal solid waste incineration power generation technology has become one of the mainstream technologies for municipal solid waste treatment in my country due to its significant volume reduction and waste reduction effects. The incineration process generates two main types of solid waste: one is fly ash collected by the flue gas purification system, which contains high concentrations of heavy metals such as lead, cadmium, chromium, and mercury, as well as persistent organic pollutants like dioxins. It is clearly classified as hazardous waste and must undergo strict stabilization treatment before further disposal. The other is slag discharged from the incinerator, mainly composed of silicates, oxides, and unburned organic matter. Although it belongs to general solid waste, it still contains small amounts of leached heavy metals. Direct landfilling not only occupies a large amount of land resources but also poses potential environmental risks.

[0003] Currently, the industry mostly adopts a "separate treatment" model for fly ash and slag, but there are still shortcomings such as poor treatment stability, poor heavy metal stabilization effect, fragmented treatment process, and low energy utilization rate, which need to be further improved and optimized. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated system and process for the synergistic resource utilization and heavy metal control of fly ash and slag, so as to achieve the synergistic treatment of fly ash and slag and the deep stabilization of heavy metals, while improving energy utilization and the quality of resource-based products.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An integrated system for the co-resource utilization of fly ash and slag and the control of heavy metals includes a main support shell arranged horizontally on the axis. A composite treatment outer rotor, coaxial and annular, is rotatably connected inside the main support shell. A composite treatment inner rotor, coaxial with the outer rotor, is rotatably connected inside the outer rotor. An annular composite treatment chamber is formed between the outer side wall of the composite treatment inner rotor and the inner side wall of the composite treatment outer rotor. From the input end to the output end of the main support shell, the composite treatment chamber is divided into a premixing convection section, a gradient crushing section, and a compaction molding section. Multiple forward-facing helical blades are fixed on the inner wall of the outer rotor of the composite treatment located in the premixed convection section, and multiple reverse-facing helical blades are fixed on the outer wall of the inner rotor of the composite treatment located in the premixed convection section. Multiple first crushing blades are fixed on the inner side wall of the composite processing outer rotor at the gradient crushing section, and multiple second crushing blades are fixed on the outer side wall of the composite processing inner rotor at the gradient crushing section. The outer wall of the inner rotor in the composite processing section is rotatably connected to multiple compaction rollers. Multiple electric heating plates are fixed on the outer wall of the composite-processed outer rotor; The main support cylinder shell has a feed inlet hopper at its input end and a discharge funnel at its output end. The upper side of the discharge hopper is equipped with an exhaust gas output pipe that is connected to its interior, and the far end of the exhaust gas output pipe is connected to an exhaust gas purifier.

[0006] Preferably, the outer rotor of the composite treatment is rotatably connected to the inner wall of the main support cylinder shell at both ends through an end support ring; The main support cylinder shell has a rotating drive ring shell coaxial with it on its side wall. The composite processing outer rotor is fixed with a rotating drive gear ring at the rotating drive ring shell. A rotating drive motor is installed in the rotating drive ring shell. A rotating drive gear is fixed on the output shaft of the rotating drive motor. The rotating drive gear meshes with the rotating drive gear ring. The rotor end of the composite processing unit is equipped with an end support shell for rotational engagement. The end support shell is fixedly connected to the inner wall of the main support cylinder shell through multiple radial support plates. The end of the composite processing inner rotor is fixed with an inner rotor drive support shaft. The end support shell contains a reducer and an inner rotor drive motor. The output shaft of the inner rotor drive motor is connected to the input shaft of the reducer through a coupling. The output shaft of the reducer is connected to the inner rotor drive support shaft through a coupling.

[0007] Explanation: The composite processing outer rotor and the composite processing inner rotor are independently driven and rotate in opposite directions. The counter-rotating composite processing outer rotor and the composite processing inner rotor enable the material to form strong convective shear motion in the premixing convection section and gradient shear and impact crushing effect in the gradient crushing section, which greatly improves the mixing and crushing efficiency, while avoiding the accumulation or short circuit of material in the composite processing chamber.

[0008] Preferably, the positive spiral blade has multiple atomizing nozzles on its side, the outer rotor of the composite treatment has a chelating agent delivery hole inside its side wall that communicates with the atomizing nozzles, and the outer side of the outer rotor of the composite treatment is rotatably fitted with a chelating agent delivery ring that is coaxial with it. The inner side of the chelating agent delivery ring has a chelating agent distribution ring groove, and the chelating agent delivery hole communicates with the chelating agent distribution ring groove. The chelating agent delivery ring is fixed with a main chelating agent delivery pipe that communicates with the chelating agent distribution ring groove. The chelating agent delivery ring is fixedly connected to the inner wall of the main support cylinder shell through a fixed connecting rod.

[0009] Description: Dynamic atomization and uniform addition of heavy metal chelating agents are achieved through individual atomizing nozzles. The chelating agent delivery ring is fixed to the inner wall of the main support cylinder via a connecting rod, maintaining a stationary state. The chelating agent distribution ring groove on its inner side remains connected to the chelating agent delivery hole inside the side wall of the composite treatment outer rotor, solving the fluid delivery sealing problem between rotating and stationary components. After entering the chelating agent distribution ring groove through the main chelating agent delivery pipe, the heavy metal chelating agent is evenly distributed to each chelating agent delivery hole and finally atomized and sprayed out from multiple atomizing nozzles on the side of the forward spiral blades. Setting the atomizing nozzles on the forward spiral blades allows the heavy metal chelating agent to be directly sprayed into the material flow field with the most intense convection, achieving instantaneous and sufficient contact with fly ash and slag particles. This avoids the problems of chelating agent agglomeration and uneven mixing caused by traditional static addition methods, significantly improving the efficiency and uniformity of the heavy metal chelation reaction.

[0010] Preferably, a brick forming mechanism is provided connected to the discharge hopper. The brick forming mechanism includes an aggregate conveying column that is connected to the discharge hopper and extends vertically. The aggregate conveying column has a vertically extending aggregate conveying channel inside. The aggregate conveying column is provided with a vertically extending rotating support column on the side. A mold support rotating ring is rotatably connected to the rotating support column and is coaxial with it. A mold support plate is fixed on the mold support rotating ring and is coaxial with it. The upper side of the mold support plate is in sealed contact with the lower end of the aggregate conveying column. The mold support plate has multiple vertical through holes, and the aggregate conveying channel is coaxially aligned with one of the mold through holes in the vertical direction. The mold support plate has multiple mold receiving grooves extending radially inside. Two partition connecting grooves connected to the mold receiving grooves are opened on the inner side wall of the mold through hole. A pressing partition is slidably connected in the partition connecting groove. A pressing connection groove is provided on the inner side wall of the mold through hole and on the side away from the partition plate connecting groove. A forming pressing block is slidably connected in the pressing connection groove. Multiple pressing drive receiving cylinders extending radially are fixed on the outer side wall of the mold support plate. The pressing connection groove is connected to the pressing drive receiving cylinder through the push rod connecting hole. A pressing push rod is slidably connected in the push rod connecting hole. One end of the pressing push rod is fixedly connected to the forming pressing block. A forming pressing drive rod for driving the pressing push rod to move is provided in the pressing drive receiving cylinder. A partition drive connecting block is fixed at one end of the pressing partition in the mold receiving groove. A screw mating hole is opened on the partition drive connecting block. A partition drive screw is threadedly connected in the screw mating hole. A partition drive motor is fixed in the mold receiving groove. The output shaft of the partition drive motor is connected to the partition drive screw through a coupling. The mold support plate has a material feeding column arranged coaxially with the aggregate feeding column on the lower side, and the material feeding column has a vertically through material feeding channel.

[0011] Description: The brick forming mechanism adopts a rotary multi-station mold design, realizing continuous production of brick blanks. The mold support plate rotates around the rotating support column through the mold support rotation, which facilitates the replacement of mold through holes of different specifications and the alignment of aggregate conveying channels. Each mold through hole is equipped with an independent pressing baffle and forming pressing block to achieve sealing and opening of the upper and lower ends of the mold through hole. The forming pressing drive rod drives the pressing push rod to move the forming pressing block radially, and performs transverse pressing on the aggregate in the mold through hole. Transverse pressing can make the pressure evenly distributed inside the aggregate, avoiding the problems of uneven density and delamination cracking in the brick blank, and significantly improving the strength and stability of the brick blank.

[0012] Preferably, the aggregate conveying column is provided with a material dropping buffer mechanism, which includes a material dropping buffer receiving cylinder fixedly connected to the outside of the aggregate conveying column. A buffer connecting hole is opened on the side wall of the aggregate conveying column, which is connected to the inside of the material dropping buffer receiving cylinder and is connected to the aggregate conveying channel. The material discharge buffer receiving cylinder is equipped with a slidingly fitted buffer adapter piston. The material discharge buffer receiving cylinder is equipped with a buffer adapter drive rod for driving the buffer adapter piston to move. The buffer adapter drive rod is an existing technology electric control telescopic rod driven by a servo motor. The outer end of the buffer adapter drive rod is fixedly connected to the inner end of the material discharge buffer receiving cylinder, and the inner end of the buffer adapter drive rod is fixedly connected to the buffer adapter piston.

[0013] Description: The material feeding buffer mechanism is used to regulate the aggregate pressure and flow rate in the aggregate conveying channel, ensuring that the aggregate is filled into the mold through-hole evenly and stably. When the aggregate pressure or flow rate in the aggregate conveying channel is too high, the buffer adapter drive rod moves the buffer adapter piston towards the inner end of the material feeding buffer receiving cylinder, allowing some aggregate to enter the material feeding buffer receiving cylinder through the buffer connecting hole, thus achieving pressure release and flow buffering. When the aggregate pressure or flow rate in the aggregate conveying channel is insufficient, the buffer adapter drive rod moves the buffer adapter piston towards the buffer connecting hole, pushing the aggregate stored in the material feeding buffer receiving cylinder back into the aggregate conveying channel to replenish the aggregate flow. This mechanism can effectively avoid the problem of insufficient or excessive filling of the mold through-hole due to fluctuations in aggregate conveying, ensuring consistent weight and density of each brick blank and improving the stability of product quality.

[0014] Preferably, a waste heat recovery mechanism is provided on the outside of the main support shell. The waste heat recovery mechanism includes a waste heat recovery receiving shell surrounding the outside of the main support shell. A waste heat separation ring shell is fixed inside the waste heat recovery receiving shell and is coaxial with it. A heat exchange conveying pipe is fixed on the inner side of the waste heat separation ring shell and is spirally extended along its axis. An annular waste heat absorption cavity is formed between the outer side of the waste heat separation ring shell and the inner side of the waste heat recovery container shell, and the waste heat absorption cavity is filled with water. The output end of the exhaust gas purifier is connected to one end of the heat exchange conveying pipe via the exhaust gas recycling conveying pipe.

[0015] Explanation: The waste heat recovery mechanism realizes the recovery and utilization of waste heat from the exhaust gas during the treatment process, reducing the overall energy consumption of the system. The high-temperature exhaust gas purified by the exhaust gas purifier enters the spirally extended heat exchange conveying pipe through the exhaust gas recovery conveying pipe. The spirally arranged heat exchange conveying pipe prolongs the heat exchange time between the exhaust gas and the water in the waste heat absorption cavity, improving the heat exchange efficiency. The heat in the exhaust gas is transferred to the water in the waste heat absorption cavity through the pipe wall of the heat exchange conveying pipe. After heating the water, the hot water can play a role in heat preservation for the main support shell and the internal composite treatment chamber. At the same time, the double-layer structure formed by the waste heat recovery housing shell and the waste heat separation ring shell also has the effect of sound insulation and noise reduction, which can reduce noise pollution during equipment operation.

[0016] This invention also provides a process for the co-resource utilization and heavy metal control of fly ash and slag. Based on the above-mentioned integrated system for the co-resource utilization and heavy metal control of fly ash and slag, the process includes the following steps: S1. Start-up and material feeding: The output shaft of the rotary drive motor drives the composite processing outer rotor to rotate through the meshing transmission of the rotary drive gear and the rotary drive ring gear. The composite processing outer rotor rotates under the support of the end support rings at both ends on the inner side wall of the main support cylinder shell. The output shaft of the inner rotor drive motor drives the inner rotor of the composite processing to rotate through the transmission of the inner rotor drive support shaft via a reducer, and the outer rotor of the composite processing rotates in the opposite direction to the inner rotor of the composite processing. The mixture of fly ash and slag to be treated is transported to the feed hopper by a conveyor. The mixture in the feed hopper enters the composite processing chamber from the input end of the main support cylinder shell. S2, Premixed convection treatment: The mixture first enters the premixed convection section of the composite processing chamber. In the premixed convection section, the positive spiral blades rotating with the outer rotor of the composite processing and the negative spiral blades rotating with the inner rotor of the composite processing drive the mixture to form a strong convective shear motion. Heavy metal chelating agents are added to the mixture to achieve rapid and uniform mixing of fly ash and slag. The heavy metal chelating agent can be a commercially available product using existing technology. For example, a commercially available aqueous solution of TMT-15 trithiotriazine trisodium salt can be used, whose components by mass percentage are: 14% trithiotriazine trisodium salt, 0.95% sodium hydroxide, 85% deionized water, and 0.05% sodium sulfite. S3, Gradient Breaking Process: The mixture in the premixed convection section then enters the gradient crushing section. Under the relative movement of the first crushing blade on the inner side wall of the composite treatment outer rotor and the second crushing blade on the outer side wall of the composite treatment inner rotor, the mixture is subjected to gradient shearing and impact crushing, which crushes large pieces of slag into uniform particle size and further disperses fly ash agglomerates. The strong shear force generated during the crushing process continuously enhances the micro-mixing of fly ash, slag and heavy metal chelating agent, so that unreacted heavy metal ions can fully contact the heavy metal chelating agent. S4. Compaction molding process: After crushing, the mixture enters the compaction section. Multiple compaction rollers rotate together with the rotor in the composite processing section, while each compaction roller also rotates around its own axis to continuously compact the loose mixture into aggregate with higher density. S5. Discharge and exhaust gas purification treatment: The compacted aggregate is discharged from the discharge funnel at the output end of the main support cylinder shell and enters the subsequent molding and brick-making mechanism. The waste gas containing dust, heavy metal vapor and harmful gases generated during the process is discharged from the waste gas output pipe on the upper side of the discharge funnel and is purified by the waste gas purifier. S6. Continuous brick making: Aggregate enters the aggregate conveying channel inside the aggregate conveying column from the discharge funnel. At this time, one of the mold through holes is vertically and coaxially aligned with the aggregate conveying channel. The partition drive motor drives the partition drive screw to rotate, which in turn drives the pressing partition to extend or retract along the partition connecting groove via the partition drive connecting block. First, extend the lower pressing baffle to block the lower end of the mold through hole. After the aggregate falls into the mold through hole, extend the upper pressing baffle to block the upper end of the mold through hole. A relatively closed space is formed between the two pressing baffles. The inner rod of the forming and pressing drive rod extends out and drives the forming and pressing block to move towards the center of the mold through hole through the driving and pressing push rod, and presses the aggregate laterally to form a brick blank. The inner rod of the forming and pressing drive rod then retracts to make the forming and pressing block retract into the pressing connection groove. After being pressed into brick blanks, the lower pressing baffle is retracted first, allowing the brick blanks to fall from the bottom of the mold through hole into the material conveying channel for discharge. After the brick blanks are discharged, the lower pressing baffle continues to extend and block the bottom of the mold through hole. Finally, the upper pressing partition is retracted, allowing the aggregate in the aggregate conveying channel to be refilled into the mold through hole. The pressing process is repeated to continuously form brick blanks from the aggregate. Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects: 1. This invention realizes the integrated and synergistic treatment of fly ash and slag, integrating premixed convection, gradient crushing, compaction molding and continuous brick making into one system, avoiding the increase in operating costs caused by multiple material transfers. At the same time, it makes full use of the cementitious activity of fly ash and the aggregate skeleton role of slag to achieve the synergistic resource utilization of the two, without the need to add a large amount of cement or other cementitious materials, further reducing the resource utilization cost. 2. The multi-stage enhanced mixing and crushing of this invention achieves deep stabilization of heavy metals. Through the counter-rotating composite outer rotor and composite inner rotor, strong convective shearing motion is formed in the premixing convection section. Combined with the dynamic atomization of heavy metal chelating agents by the atomizing nozzles on the forward spiral blades, macroscopic uniform mixing of chelating agents and materials is achieved. In the gradient crushing section, the strong shearing force generated by the relative motion of the first and second crushing blades further disperses fly ash agglomerates and crushes large pieces of slag, while strengthening the microscopic contact between heavy metal ions and chelating agents. In the compaction and molding section, the roller pressing action of the compaction roller and the temperature field of the electric heating plate work together to promote the crystallization and solidification of heavy metal chelates, so that heavy metals are firmly wrapped in a dense aggregate structure, significantly reducing the risk of heavy metal leaching. 3. The continuous brick-making process of the present invention adopts a design that combines a rotary multi-station mold with transverse pressing, realizing continuous production of filling, pressing and demolding processes, which greatly improves production efficiency. The transverse pressing method makes the pressure evenly distributed inside the aggregate, avoiding the problems of uneven density and delamination cracking of the brick blank. 4. This invention adopts a modular structure design, which facilitates large-scale promotion and application. Each component of the system adopts a modular design. The main support shell, the brick forming mechanism, the waste heat recovery mechanism, etc. can all be produced, transported and installed independently. They can be flexibly combined and configured according to different processing scales. The operation and maintenance are simple and it is suitable for promotion and application in large, medium and small municipal solid waste incineration plants. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention; Figure 2 This is a schematic diagram of the main supporting cylindrical shell of the present invention; Figure 3 This is a schematic diagram of the composite processing outer rotor of the present invention; Figure 4 This is a schematic diagram of the atomizing nozzle structure of the present invention; Figure 5 This is a schematic diagram of the brick-making mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the mold support plate of the present invention.

[0018] In the diagram, 10-Main support cylinder shell, 101-Premixing convection section, 102-Gradient crushing section, 103-Compacting molding section, 104-Feed input hopper, 105-Discharge funnel, 106-Exhaust gas output pipe, 107-Exhaust gas purifier, 11-Composite treatment outer rotor, 110-Electric heating plate, 111-Forward spiral blade, 112-First crushing blade, 113-End support ring, 12-Composite treatment inner rotor, 121-Reverse spiral blade, 122-Second crushing blade, 123-Pressure... 13-Solid roller shaft, 131-Rotary drive ring housing, 132-Rotary drive gear ring, 133-Rotary drive motor, 14-End support housing, 141-Radial support plate, 142-Inner rotor drive support shaft, 143-Reducer, 144-Inner rotor drive motor, 15-Atomizing spray hole, 151-Chlorinating agent conveying hole, 152-Chlorinating agent conveying ring, 153-Chlorinating agent distribution ring groove, 154-Chlorinating agent main conveying pipe, 155-Fixed connecting rod, 20-Forming brick-making mechanism 21-Aggregate conveying column, 210-Aggregate conveying channel, 211-Rotating support column, 212-Mold support rotating ring, 213-Discharge conveying column, 214-Discharge conveying channel, 22-Mold support plate, 220-Mold through hole, 221-Mold receiving groove, 222-Partition connecting slide, 223-Pressing partition, 224-Push connecting groove, 225-Forming pressing block, 226-Push driving receiving cylinder, 227-Push rod connecting hole, 228-Pressing push rod, 229- Forming and pressing drive rod, 231-partition drive connecting block, 232-screw mating hole, 233-partition drive screw, 234-partition drive motor, 24-feeding buffer mechanism, 240-buffer connecting hole, 241-feeding buffer receiving cylinder, 242-buffer adapter piston, 243-buffer adapter drive rod, 30-waste heat recovery mechanism, 31-waste heat recovery receiving cylinder shell, 310-waste heat absorption cavity, 32-waste heat separation ring shell, 33-heat exchange conveying pipe, 34-exhaust gas recovery conveying pipe. Detailed Implementation

[0019] The following is combined with Figures 1-6 The present invention will be described in detail. For ease of description, the orientations mentioned below are defined as follows: The directions of up, down, left, right, front, and back mentioned below are consistent with the directions of up, down, left, right, front, and back in the projection relationship of the respective main view or structural schematic diagram.

[0020] Example 1: An integrated system for the co-utilization of fly ash and slag, and the control of heavy metals, such as... Figure 1 As shown, it includes a main support shell 10 arranged horizontally along its axis, such as... Figure 2As shown, a composite processing outer rotor 11, which is coaxial and annular, is rotatably connected inside the main support cylinder shell 10. A composite processing inner rotor 12, which is coaxial with the composite processing outer rotor 11, is rotatably connected inside the composite processing outer rotor 11. An annular composite processing chamber 100 is formed between the outer side wall of the composite processing inner rotor 12 and the inner side wall of the composite processing outer rotor 11. From the input end to the output end of the main support cylinder shell 10, the composite processing chamber 100 is divided into a premixed convection section 101, a gradient crushing section 102, and a compaction molding section 103 in sequence. like Figure 2 As shown, multiple forward spiral blades 111 are fixed on the inner wall of the composite processing outer rotor 11 at the premixed convection section 101, and multiple reverse spiral blades 121 are fixed on the outer wall of the composite processing inner rotor 12 at the premixed convection section 101. like Figure 2 As shown, multiple first crushing blades 112 are fixed on the inner side wall of the composite processing outer rotor 11 located in the gradient crushing section 102, and multiple second crushing blades 122 are fixed on the outer side wall of the composite processing inner rotor 12 located in the gradient crushing section 102. The outer wall of the composite processing inner rotor 12 is rotatably connected to multiple compaction rollers 123 in the compaction molding section 103. like Figure 3 As shown, multiple electric heating plates 110 are fixed on the outer wall of the composite-processed outer rotor 11; like Figure 1 As shown, the main support cylinder shell 10 is provided with a feed input hopper 104 at the input end and a discharge funnel 105 at the output end. like Figure 2 As shown, the upper side of the discharge hopper 105 is provided with an exhaust gas output pipe 106 that is connected to its interior, and the far end of the exhaust gas output pipe 106 is connected to an exhaust gas purifier 107.

[0021] The exhaust gas purifier 107 adopts existing technologies, such as the LCM-D / G-360 long-bag low-pressure pulse dust collector (standard configuration with GORE® REMEDIA® catalytic filter bags) produced by Fujian Longking Environmental Protection Co., Ltd., and is equipped with Longking Environmental Protection DSC-M dry desulfurization module and activated carbon quantitative injection system; or, for example, the JZ-FH-3000 integrated exhaust gas purifier for fly ash treatment produced by Botou Jinzhu Environmental Protection Equipment Co., Ltd. like Figure 2 As shown, the composite-processed outer rotor 11 is rotatably connected to the inner wall of the main support cylinder shell 10 at both ends through an end support ring 113; like Figure 3As shown, a rotary drive ring shell 13 is provided on the side wall of the main support cylinder shell 10 and is coaxial with it. The composite processing outer rotor 11 is located at the rotary drive ring shell 13 and a rotary drive gear ring 131 is fixed thereon. A rotary drive motor 132 is provided in the rotary drive ring shell 13. A rotary drive gear 133 is fixed on the output shaft of the rotary drive motor 132 and the rotary drive gear 133 is meshed with the rotary drive gear ring 131. like Figure 2 As shown, the end of the inner rotor 12 of the composite processing is provided with an end support shell 14 for rotational engagement. The end support shell 14 is fixedly connected to the inner wall of the main support cylinder shell 10 through multiple radial support plates 141. The end of the composite processing inner rotor 12 is fixed with an inner rotor drive support shaft 142. The end support shell 14 is equipped with a reducer 143 and an inner rotor drive motor 144. The output shaft of the inner rotor drive motor 144 is connected to the input shaft of the reducer 143 through a coupling. The output shaft of the reducer 143 is connected to the inner rotor drive support shaft 142 through a coupling.

[0022] Reducer 143 is a prior art planetary gear reducer; like Figure 1 As shown, a brick-forming mechanism 20 is connected to the discharge hopper 105, such as... Figure 5 As shown, the brick forming mechanism 20 includes an aggregate conveying column 21 that is connected to the discharge funnel 105 and extends vertically, and the aggregate conveying column 21 has a vertically extending aggregate conveying channel 210. The aggregate conveying column 21 has a vertically extending rotating support column 211 on its side. A mold support rotating ring 212 coaxial with it is rotatably connected to the rotating support column 211. A mold support disk 22 coaxial with it is fixed on the mold support rotating ring 212. The upper side of the mold support disk 22 is in sealed contact with the lower end of the aggregate conveying column 21. The mold support rotating ring 212 is driven by a prior art servo motor fixed on the rotating support column 211 to rotate around the axis of the rotating support column 211 via worm gear transmission; The mold support plate 22 has multiple vertical through mold holes 220, and the aggregate conveying channel 210 is coaxially aligned with one of the mold holes 220 in the vertical direction. like Figure 6 As shown, the mold support plate 22 has multiple mold receiving grooves 221 extending radially inside it, and two partition connecting grooves 222 connected to the mold receiving grooves 221 are opened on the inner side wall of the mold through hole 220. A pressing partition 223 is slidably connected in the partition connecting groove 222. A pressing connection groove 224 is provided on the inner side wall of the mold through hole 220 and on the side away from the partition connecting groove 222. A forming pressing block 225 is slidably connected in the pressing connection groove 224. A plurality of pressing drive receiving cylinders 226 extending radially are fixed on the outer side wall of the mold support plate 22. The pressing connection groove 224 is connected to the pressing drive receiving cylinder 226 through the push rod connecting hole 227. A pressing push rod 228 is slidably connected in the push rod connecting hole 227. One end of the pressing push rod 228 is fixedly connected to the forming pressing block 225. A forming pressing drive rod 229 for driving the pressing push rod 228 to move is provided in the pressing drive receiving cylinder 226. The forming pressing drive rod 229 is an existing electric control telescopic rod driven by a servo motor. The outer end of the forming pressing drive rod 229 is fixedly connected to the inner end of the pressing drive receiving cylinder 226, and the inner end of the forming pressing drive rod 229 is fixedly connected to the pressing push rod 228. A partition drive connecting block 231 is fixed at one end of the pressing partition 223 in the mold receiving groove 221. A screw mating hole 232 is opened on the partition drive connecting block 231. A partition drive screw 233 is threadedly connected in the screw mating hole 232. A partition drive motor 234 is fixed in the mold receiving groove 221. The output shaft of the partition drive motor 234 is connected to the partition drive screw 233 through a coupling. The partition drive motor 234 is a servo motor of existing technology; like Figure 5 As shown, a material feeding conveyor column 213 is provided on the lower side of the mold support plate 22, which is coaxially arranged with the aggregate feeding column 21. A vertically penetrating material feeding conveyor channel 214 is provided on the material feeding conveyor column 213.

[0023] Example 2: This embodiment describes a process for the co-resource utilization and heavy metal control of fly ash and slag. Based on the integrated system for the co-resource utilization and heavy metal control of fly ash and slag in Embodiment 1 above, the system includes the following steps: S1. Start-up and material feeding: The output shaft of the rotary drive motor 132 drives the composite processing outer rotor 11 to rotate through the meshing transmission of the rotary drive gear 133 and the rotary drive gear ring 131. The composite processing outer rotor 11 rotates under the support of the inner side wall of the main support cylinder shell 10 through the end support rings 113 at both ends. The output shaft of the inner rotor drive motor 144 drives the inner rotor 12 of the composite processing to rotate through the transmission of the inner rotor drive support shaft 142 via the reducer 143, and the outer rotor 11 of the composite processing rotates in the opposite direction to the inner rotor 12 of the composite processing. The mixture of fly ash and slag to be treated is transported to the feed hopper 104 using a conveyor with existing technology. The mixture in the feed hopper 104 enters the composite processing chamber 100 from the input end of the main support cylinder shell 10. It should be noted that the fly ash to be treated here refers to municipal solid waste incineration fly ash that has undergone water washing, desalination, and dioxin removal treatment using existing water washing technology.

[0024] S2, Premixed convection treatment: The mixture first enters the premixing convection section 101 of the composite processing chamber 100. In the premixing convection section 101, the forward spiral blades 111 that rotate with the outer rotor 11 of the composite processing and the reverse spiral blades 121 that rotate with the inner rotor 12 of the composite processing drive the mixture to form a strong convective shear motion. Heavy metal chelating agents are added to the mixture to achieve rapid and uniform mixing of fly ash and slag. S3, Gradient Breaking Process: The mixture in the premixed convection section 101 then enters the gradient crushing section 102. Under the relative movement of the first crushing blade 112 on the inner side wall of the composite treatment outer rotor 11 and the second crushing blade 122 on the outer side wall of the composite treatment inner rotor 12, the mixture is subjected to gradient shearing and impact crushing, which crushes large pieces of slag to a uniform particle size and further disperses fly ash agglomerates. The strong shear force generated during the crushing process continuously enhances the micro-mixing of fly ash, slag and heavy metal chelating agent, so that unreacted heavy metal ions can fully contact the heavy metal chelating agent. Significantly improves the comprehensiveness and stability of heavy metal chelation, reducing the risk of heavy metal leaching in subsequent products; S4. Compaction molding process: After crushing, the mixture enters the compaction section 103. Multiple compaction rollers 123 rotate together with the rotor 12 in the composite processing section, while each compaction roller 123 also rotates around its own axis to continuously compact the loose mixture into aggregate with higher density. The mechanical pressure generated during the rolling process, combined with the temperature field provided by the electric heating plate 110, can further promote the crystallization and solidification of heavy metal chelates, so that the heavy metals are firmly wrapped in the dense structure of the aggregate, achieving deep stabilization of the heavy metals.

[0025] S5. Discharge and exhaust gas purification treatment: The compacted aggregate is discharged from the discharge funnel 105 at the output end of the main support cylinder shell 10 and enters the subsequent molding and brick making mechanism 20. The waste gas containing dust, heavy metal vapor and harmful gases generated during the process is discharged from the waste gas output pipe 106 on the upper side of the discharge funnel 105 and is purified by the waste gas purifier 107. S6. Continuous brick making: Aggregate enters aggregate conveying channel 210 inside aggregate conveying column 21 from discharge funnel 105, at which time one of the mold through holes 220 is vertically and coaxially aligned with aggregate conveying channel 210. The partition drive motor 234 drives the partition drive screw 233 to rotate, and through the partition drive connecting block 231, it drives the pressing partition 223 to extend or retract along the partition connecting groove 222. First, the lower pressing partition 223 extends out to block the lower end of the mold through hole 220. After the aggregate falls into the mold through hole 220, the upper pressing partition 223 extends out to block the upper end of the mold through hole 220, forming a relatively closed space between the two pressing partitions 223. The inner rod of the forming and pressing drive rod 229 extends out and drives the forming and pressing block 225 to move toward the center of the mold through hole 220 through the driving and pressing push rod 228, and presses the aggregate laterally to form a brick blank. The inner rod of the forming and pressing drive rod 229 then retracts to make the forming and pressing block 225 retract into the pressing connection groove 224. After being pressed into a brick blank, the pressing partition 223 below is retracted first, so that the brick blank falls from the lower end of the mold through hole 220 into the material conveying channel 214 and is discharged. After the brick blank is discharged, the pressing partition 223 below continues to extend and block the lower end of the mold through hole 220. Finally, the upper pressing partition 223 is retracted, allowing the aggregate in the aggregate conveying channel 210 to be refilled into the mold through hole 220. The pressing process is repeated to continuously form brick blanks from the aggregate. Example 3: Based on Example 1, such as Figure 4 As shown, the positive spiral blade 111 has multiple atomizing nozzles 15 on its side. The inner side wall of the composite processing outer rotor 11 has a chelating agent delivery hole 151 that communicates with the atomizing nozzles 15. The outer side of the composite processing outer rotor 11 is rotatably fitted with a chelating agent delivery ring 152 that is coaxial with it. The inner side of the chelating agent delivery ring 152 has a chelating agent distribution ring groove 153. The chelating agent delivery hole 151 communicates with the chelating agent distribution ring groove 153. The chelating agent delivery ring 152 is fixed with a chelating agent main delivery pipe 154 that communicates with the chelating agent distribution ring groove 153. The chelating agent delivery ring 152 is fixedly connected to the inner wall of the main support cylinder shell 10 through a fixed connecting rod 155.

[0026] Example 4: This embodiment describes a process for the co-resource utilization and heavy metal control of fly ash and slag. Based on the integrated system for the co-resource utilization and heavy metal control of fly ash and slag in Embodiment 3 above, the difference from Embodiment 2 is that in S2, while the premixed convection treatment is being carried out, a heavy metal chelating agent is transported to the chelating agent distribution ring groove 153 through the chelating agent main transport pipe 154 using a transport pump of the existing technology. The heavy metal chelating agent is then transported to each atomizing spray hole 15 through the chelating agent transport hole 151. Finally, the heavy metal chelating agent is atomized and sprayed out from the atomizing spray hole 15 opened on the side of the forward spiral blade 111, and fully contacted and mixed with the mixture in the convection state. Furthermore, the electric heating plate 110 fixed on the outer wall of the outer rotor 11 of the composite treatment simultaneously heats the composite treatment chamber 100, increases the chelation reaction temperature, accelerates the combination of heavy metal ions and heavy metal chelating agents, and achieves the initial stabilization of heavy metals.

[0027] Example 5: Based on Example 3, such as Figure 2 As shown, a waste heat recovery mechanism 30 is provided on the outside of the main support cylinder shell 10. The waste heat recovery mechanism 30 includes a waste heat recovery receiving cylinder shell 31 surrounding the outside of the main support cylinder shell 10. A waste heat separation ring shell 32 coaxial with it is fixed inside the waste heat recovery receiving cylinder shell 31. A heat exchange conveying pipe 33 spirally extending along its axis is fixed on the inner side of the waste heat separation ring shell 32. An annular waste heat absorption cavity 310 is formed between the outer side of the waste heat separation ring shell 32 and the inner side of the waste heat recovery container shell 31, and the waste heat absorption cavity 310 is filled with water. The output end of the exhaust gas purifier 107 is connected to one end of the heat exchange conveying pipe 33 through the exhaust gas reuse conveying pipe 34.

[0028] Example 6: This embodiment describes a process for the co-resource utilization and heavy metal control of fly ash and slag. Based on the integrated system for the co-resource utilization and heavy metal control of fly ash and slag in Embodiment 5, the difference from Embodiment 4 is that in S5, after the exhaust gas is purified, it enters the waste heat recovery mechanism 30 for waste heat recovery. The purified exhaust gas enters the heat exchange conveying pipe 33 through the tail gas recovery conveying pipe 34. The heat exchange conveying pipe 33 is spirally arranged along the inner side of the waste heat separation ring shell 32. The heat in the exhaust gas is transferred to the water filled in the waste heat absorption cavity 310 through heat exchange, and the water is heated to provide insulation for the interior of the main support shell 10.

[0029] Example 7: Based on Example 5, such as Figure 5As shown, the aggregate conveying column 21 is provided with a material dropping buffer mechanism 24. The material dropping buffer mechanism 24 includes a material dropping buffer receiving cylinder 241 fixedly connected to the outside of the aggregate conveying column 21. A buffer connecting hole 240 is opened on the side wall of the aggregate conveying column 21, which communicates with the inside of the material dropping buffer receiving cylinder 241. The buffer connecting hole 240 is connected to the aggregate conveying channel 210. The material discharge buffer receiving cylinder 241 is provided with a slidingly fitted buffer adapter piston 242. The material discharge buffer receiving cylinder 241 is provided with a buffer adapter drive rod 243 for driving the buffer adapter piston 242 to move. The buffer adapter drive rod 243 is an existing electrically controlled telescopic rod driven by a servo motor. The outer end of the buffer adapter drive rod 243 is fixedly connected to the inner end of the material discharge buffer receiving cylinder 241, and the inner end of the buffer adapter drive rod 243 is fixedly connected to the buffer adapter piston 242.

[0030] Example 8: This embodiment describes a process for the co-resource utilization and heavy metal control of fly ash and slag. Based on the integrated system for the co-resource utilization and heavy metal control of fly ash and slag in Embodiment 7, the difference from Embodiment 6 is that in S5, after the aggregate falls into the aggregate conveying channel 210 and during the pressing into brick blanks, the inner rod of the buffer adapter drive rod 243 retracts, and some aggregate can enter the dropping buffer receiving cylinder 241 through the buffer connecting hole 240. During the process of the aggregate being refilled into the mold through hole 220, the inner rod of the buffer adapter drive rod 243 extends, and the aggregate in the dropping buffer receiving cylinder 241 is driven to be discharged back into the aggregate conveying channel 210 through the buffer adapter piston 242, thereby adjusting the pressure in the aggregate conveying channel 210 and controlling the aggregate to fall evenly and stably into the mold through hole 220, avoiding aggregate accumulation or uneven feeding.

Claims

1. An integrated system for the co-resource utilization and heavy metal control of fly ash and slag, characterized in that, The system includes a main support shell (10) arranged horizontally along its axis. A composite processing outer rotor (11) is rotatably connected to the main support shell (10) and is coaxial with it and is annular. A composite processing inner rotor (12) is rotatably connected to the composite processing outer rotor (11) and is coaxial with it. An annular composite processing chamber (100) is formed between the outer side wall of the composite processing inner rotor (12) and the inner side wall of the composite processing outer rotor (11). From the input end to the output end of the main support shell (10), the composite processing chamber (100) is divided into a premixed convection section (101), a gradient crushing section (102), and a compaction molding section (103). The inner wall of the composite processing outer rotor (11) is fixed with a plurality of forward spiral blades (111) located at the premixed convection section (101), and the outer wall of the composite processing inner rotor (12) is fixed with a plurality of reverse spiral blades (121) located at the premixed convection section (101). The inner wall of the composite processing outer rotor (11) is fixed with a plurality of first crushing blades (112) at the gradient crushing section (102), and the outer wall of the composite processing inner rotor (12) is fixed with a plurality of second crushing blades (122) at the gradient crushing section (102). The outer wall of the composite processing inner rotor (12) is rotatably connected to multiple compaction rollers (123) in the compaction molding section (103). Multiple electric heating plates (110) are fixed on the outer wall of the composite processing outer rotor (11). The main support cylinder shell (10) is provided with a feed input hopper (104) at its input end and a discharge funnel (105) at its output end. The upper side of the discharge funnel (105) is provided with a waste gas output pipe (106) that is connected to its interior, and the far end of the waste gas output pipe (106) is connected to a waste gas purifier (107).

2. The integrated system for the co-resource utilization and heavy metal control of fly ash and slag according to claim 1, characterized in that, The composite processing outer rotor (11) is rotatably connected to the inner wall of the main support cylinder shell (10) at both ends through an end support ring (113); The main support cylinder shell (10) has a rotating drive ring shell (13) coaxial with it on its side wall. The composite processing outer rotor (11) is fixed with a rotating drive gear ring (131) at the rotating drive ring shell (13). The rotating drive ring shell (13) is provided with a rotating drive motor (132). A rotating drive gear (133) is fixed on the output shaft of the rotating drive motor (132). The rotating drive gear (133) meshes with the rotating drive gear ring (131). The end of the composite processing inner rotor (12) is provided with an end support shell (14) for rotational engagement. The end support shell (14) is fixedly connected to the inner wall of the main support cylinder shell (10) through multiple radial support plates (141). The end of the composite processing inner rotor (12) is fixed with an inner rotor drive support shaft (142). The end support shell (14) is provided with a reducer (143) and an inner rotor drive motor (144). The output shaft of the inner rotor drive motor (144) is connected to the input shaft of the reducer (143) through a coupling. The output shaft of the reducer (143) is connected to the inner rotor drive support shaft (142) through a coupling.

3. The integrated system for the co-resource utilization and heavy metal control of fly ash and slag according to claim 1, characterized in that, The positive spiral blade (111) has multiple atomizing nozzles (15) on its side. The inner side wall of the composite processing outer rotor (11) has a chelating agent delivery hole (151) that communicates with the atomizing nozzles (15). The outer side of the composite processing outer rotor (11) is rotatably fitted with a chelating agent delivery ring (152) that is coaxial with it. The inner side of the chelating agent delivery ring (152) has a chelating agent distribution ring groove (153). The chelating agent delivery hole (151) communicates with the chelating agent distribution ring groove (153). The chelating agent delivery ring (152) is fixed with a chelating agent main delivery pipe (154) that communicates with the chelating agent distribution ring groove (153). The chelating agent delivery ring (152) is fixedly connected to the inner wall of the main support cylinder shell (10) through a fixed connecting rod (155).

4. The integrated system for the co-resource utilization and heavy metal control of fly ash and slag according to claim 2, characterized in that, A brick forming mechanism (20) is provided connected to the discharge hopper (105). The brick forming mechanism (20) includes an aggregate conveying column (21) that is connected to the discharge hopper (105) and extends vertically. The aggregate conveying column (21) has a vertically extending aggregate conveying channel (210). The aggregate conveying column (21) is provided with a vertically extending rotating support column (211) on its side. A mold support rotating ring (212) coaxial with the rotating support column (211) is rotatably connected to the rotating support column (211). A mold support disk (22) coaxial with the mold support rotating ring (212) is fixed on the mold support rotating ring (212). The upper side of the mold support disk (22) is in sealed contact with the lower end of the aggregate conveying column (21). The mold support plate (22) has multiple vertical through mold holes (220), and the aggregate conveying channel (210) is coaxially aligned with one of the mold holes (220) in the vertical direction; The mold support plate (22) is provided with a plurality of mold receiving grooves (221) extending radially therein. The inner sidewall of the mold through hole (220) is provided with two partition connecting grooves (222) that are connected to the mold receiving grooves (221). A pressing partition (223) is slidably connected in the partition connecting groove (222). A pressing connection groove (224) is provided on the inner side wall of the mold through hole (220) and on the side away from the partition connecting groove (222). A forming pressing block (225) is slidably connected in the pressing connection groove (224). A plurality of pressing drive receiving cylinders (226) extending radially are fixed on the outer side wall of the mold support plate (22). The pressing connection groove (224) is connected to the pressing drive receiving cylinder (226) through the push rod connecting hole (227). A pressing push rod (228) is slidably connected in the push rod connecting hole (227). One end of the pressing push rod (228) is fixedly connected to the forming pressing block (225). A forming pressing drive rod (229) for driving the pressing push rod (228) to move is provided in the pressing drive receiving cylinder (226). One end of the pressing partition (223) located in the mold receiving groove (221) is fixed with a partition drive connecting block (231). A screw mating hole (232) is provided on the partition drive connecting block (231). A partition drive screw (233) is threadedly connected in the screw mating hole (232). A partition drive motor (234) is fixed in the mold receiving groove (221). The output shaft of the partition drive motor (234) is connected to the partition drive screw (233) through a coupling. The mold support plate (22) is provided with a material feeding column (213) arranged coaxially with the aggregate feeding column (21) on the lower side, and a vertically through material feeding channel (214) is provided on the material feeding column (213).

5. The integrated system for the co-resource utilization and heavy metal control of fly ash and slag according to claim 1, characterized in that, The aggregate conveying column (21) is provided with a material dropping buffer mechanism (24). The material dropping buffer mechanism (24) includes a material dropping buffer receiving cylinder (241) fixedly connected to the outside of the aggregate conveying column (21). A buffer connecting hole (240) communicating with the inside of the material dropping buffer receiving cylinder (241) is opened on the side wall of the aggregate conveying column (21). The buffer connecting hole (240) is connected to the aggregate conveying channel (210). The material discharge buffer receiving cylinder (241) is provided with a slidingly fitted buffer adapter piston (242). The material discharge buffer receiving cylinder (241) is provided with a buffer adapter drive rod (243) for driving the buffer adapter piston (242) to move. The buffer adapter drive rod (243) is an existing electric control telescopic rod driven by a servo motor. The outer rod end of the buffer adapter drive rod (243) is fixedly connected to the inner end of the material discharge buffer receiving cylinder (241), and the inner rod end of the buffer adapter drive rod (243) is fixedly connected to the buffer adapter piston (242).

6. The integrated system for the co-resource utilization and heavy metal control of fly ash and slag according to claim 1, characterized in that, The main support cylinder shell (10) is provided with a waste heat recovery mechanism (30) on the outside. The waste heat recovery mechanism (30) includes a waste heat recovery receiving cylinder shell (31) surrounding the outside of the main support cylinder shell (10). A waste heat separation ring shell (32) coaxial with the waste heat recovery receiving cylinder shell (31) is fixed inside the waste heat recovery receiving cylinder shell (31). A heat exchange conveying pipe (33) spirally extending along its axis is fixed on the inner side of the waste heat separation ring shell (32). An annular waste heat absorption cavity (310) is formed between the outer side of the waste heat separation ring shell (32) and the inner side of the waste heat recovery container shell (31), and the waste heat absorption cavity (310) is filled with water. The output end of the exhaust gas purifier (107) is connected to one end of the heat exchange conveying pipe (33) through the exhaust gas recycling conveying pipe (34).

7. A process for the co-resource utilization and heavy metal control of fly ash and slag, based on the integrated system for the co-resource utilization and heavy metal control of fly ash and slag as described in claim 4, characterized in that, Includes the following steps: S1. Start-up and material feeding: The output shaft of the rotary drive motor (132) drives the composite processing outer rotor (11) to rotate through the meshing transmission of the rotary drive gear (133) and the rotary drive gear ring (131). The composite processing outer rotor (11) rotates under the support of the inner side wall of the main support cylinder shell (10) through the end support rings (113) at both ends. The output shaft of the inner rotor drive motor (144) drives the composite processing inner rotor (12) to rotate through the transmission of the inner rotor drive support shaft (142) via the reducer (143), and the rotation direction of the composite processing outer rotor (11) is opposite to that of the composite processing inner rotor (12). The mixture of fly ash and slag to be treated is transported to the feed hopper (104) by a conveyor. The mixture in the feed hopper (104) enters the composite processing chamber (100) from the input end of the main support cylinder shell (10). S2, Premixed convection treatment: The mixture first enters the premixed convection section (101) of the composite processing chamber (100). In the premixed convection section (101), the forward spiral blades (111) rotating with the outer rotor (11) of the composite processing and the reverse spiral blades (121) rotating with the inner rotor (12) of the composite processing drive the mixture to form a strong convective shear motion. Heavy metal chelating agents are added to the mixture to achieve rapid and uniform mixing of fly ash and slag. S3, Gradient Breaking Process: The mixture in the premixed convection section (101) then enters the gradient crushing section (102). Under the relative motion of the first crushing blade (112) on the inner sidewall of the composite treatment outer rotor (11) and the second crushing blade (122) on the outer sidewall of the composite treatment inner rotor (12), the mixture is subjected to gradient shearing and impact crushing, which crushes large pieces of slag to uniform particle size and further disperses fly ash agglomerates. The strong shear force generated during the crushing process continuously enhances the micro-mixing of fly ash, slag and heavy metal chelating agent, so that unreacted heavy metal ions can fully contact the heavy metal chelating agent. S4. Compaction molding process: After crushing, the mixture enters the compaction section (103). Multiple compaction rollers (123) rotate together with the inner rotor (12) of the composite processing. At the same time, each compaction roller (123) also rotates around its own axis to continuously compact the loose mixture and form aggregate with higher density. S5. Discharge and exhaust gas purification treatment: The compacted aggregate is discharged from the discharge funnel (105) at the output end of the main support cylinder shell (10) and enters the subsequent molding and brick making mechanism (20). The waste gas containing dust, heavy metal vapor and harmful gases generated during the process is discharged from the waste gas output pipe (106) on the upper side of the discharge funnel (105) and purified by the waste gas purifier (107). S6. Continuous brick making: Aggregate enters the aggregate conveying channel (210) inside the aggregate conveying column (21) from the discharge funnel (105), at which time one of the mold through holes (220) is vertically and coaxially aligned with the aggregate conveying channel (210); The partition drive motor (234) drives the partition drive screw (233) to rotate, and through the partition drive connecting block (231), it drives the pressing partition (223) to extend or retract along the partition connecting groove (222); First, extend the lower pressing partition (223) to block the lower end of the mold through hole (220). After the aggregate falls into the mold through hole (220), extend the upper pressing partition (223) to block the upper end of the mold through hole (220). A relatively closed space is formed between the two pressing partitions (223). The inner rod of the molding and pressing drive rod (229) extends out and drives the molding and pressing block (225) to move toward the center of the mold through hole (220) through the driving pressing push rod (228), and presses the aggregate laterally to form a brick blank. The inner rod of the molding and pressing drive rod (229) then retracts to make the molding and pressing block (225) retract into the pressing connection groove (224). After being pressed into a brick blank, the lower pressing partition (223) is retracted first, so that the brick blank falls from the lower end of the mold through hole (220) into the material conveying channel (214) and is discharged. After the brick blank is discharged, the lower pressing partition (223) continues to extend and block the lower end of the mold through hole (220). Finally, the upper pressing partition (223) is retracted, and the aggregate in the aggregate conveying channel (210) is refilled into the mold through hole (220). The pressing process is repeated to continuously form brick blanks from the aggregate.

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