Complete set of equipment and treatment methods for hot pressing solidification and harmless treatment of aluminum ash slag

Abstract

This invention discloses a complete set of equipment and methods for hot-pressing solidification and harmless treatment of aluminum ash slag, belonging to the field of aluminum ash slag treatment technology. The complete set of equipment for hot-pressing solidification and harmless treatment of aluminum ash slag of this invention includes a pretreatment device, a mixing and stirring device, and a hot-pressing solidification component. Material is conveyed between the pretreatment device, the mixing and stirring device, and the hot-pressing solidification component via a screw conveyor. A screening cylinder is installed within the pretreatment device. The complete set of equipment and methods for hot-pressing solidification and harmless treatment of aluminum ash slag proposed in this invention utilizes a rotating screening cylinder combined with air classification, crushing, and grinding for multi-stage treatment, achieving homogenization of aluminum ash slag particle size and improving subsequent reaction efficiency. Simultaneous drying reduces moisture content, preventing water vapor from affecting strength during hot pressing. Through the linkage of screening, air classification, and crushing, the recovery rate of metallic aluminum is high, large particle impurities are directly recycled back into the furnace, and non-metallic particles are fully utilized.

Description

Technical Field

[0001] This invention relates to the field of aluminum ash slag treatment technology, specifically to a complete set of equipment and treatment methods for hot-pressing solidification and harmless treatment of aluminum ash slag. Background Technology

[0002] Aluminum slag is a hazardous waste generated during aluminum smelting and processing. It contains harmful components such as metallic aluminum, fluorides, nitrides, and heavy metals, and improper handling can easily cause environmental pollution. Traditional aluminum slag treatment methods (such as landfill and wet treatment) suffer from resource waste, high risk of secondary pollution, and low strength of the solidified body. While existing hot-pressing solidification technology can achieve harmlessness, it suffers from insufficient pretreatment (such as uneven particle size and high moisture content), low metal recovery rate, and insufficient stability of the solidified body. In addition, traditional equipment often adopts a split design, resulting in low efficiency and high energy consumption in the connection between screening, crushing, mixing, and hot pressing processes. Therefore, there is an urgent need for an integrated and automated complete set of equipment for hot-pressing solidification and harmless treatment of aluminum slag, which can achieve efficient pretreatment, precise batching, continuous hot pressing, and resource recovery. Summary of the Invention

[0003] The purpose of this invention is to provide a complete set of equipment and methods for hot-pressing solidification and harmless treatment of aluminum ash slag. By using a rotary screening cylinder combined with air classification, crushing, and grinding for multi-stage treatment, the particle size of aluminum ash slag is homogenized, improving the efficiency of subsequent reactions. Pre-pressing + three-stage shaping and temperature control improve the compressive strength of the solidified body, thus solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a complete set of equipment for hot-pressing solidification and harmless treatment of aluminum ash slag, including a pretreatment device, a mixing and stirring device, and a hot-pressing solidification component. The pretreatment device, mixing and stirring device, and hot-pressing solidification component are connected by a screw conveyor for material transport. The pretreatment device is equipped with a screening cylinder, which includes a conical feed inlet, a dispersing cylinder, a first screen, and a second screen connected in sequence. The first screen and the second screen are connected to a first motor via a connecting rod and rotate to screen the aluminum ash slag. The pretreatment device also has small-diameter channels, medium-diameter channels, and large-diameter channels, corresponding to aluminum ash slag particles of different sizes. The mixing and stirring device includes a double... The system includes a twin-shaft mixer and a quantitative feeding hopper. The quantitative feeding hopper feeds material quantitatively to the twin-shaft mixer via a screw feeder. The stabilizing agent in the quantitative feeding hopper includes lime, phosphate, or sulfide, and the binder includes silicate cement, slag powder, or fly ash. The hot-press curing assembly includes a heating pre-pressing cylinder and a curing and shaping device. The heating pre-pressing cylinder has an inner cylinder and an outer cylinder. The inner cylinder contains a screw conveyor and a water spray pipe. The curing and shaping device includes a movable turntable with shaping cylinders evenly spaced on the turntable. The shaping cylinders contain hydraulic cylinders and heating wires for segmented pressure curing of pre-formed products. The gas exhaust pipes of the pretreatment device, the twin-shaft mixer, and the outer cylinder are connected to a cyclone dust collector and a spray tower.

[0005] Preferably, the medium-sized particle channel is equipped with an air classifier, and the lower end of the medium-sized particle channel is divided into a metal recovery channel and a non-metal recovery channel. The non-metal recovery channel is equipped with a crushing roller and an inclined filter screen. The metal particles after air classification are combined with the impurities in the large-sized particle channel for recovery.

[0006] Preferably, the lower ends of the non-metallic recycling channel and the small particle size channel are connected, and a grinding block and a grinding groove are provided. The central shaft of the grinding block is connected to a second motor, and the grinding block crushes the aluminum ash slag to a particle size of <5mm.

[0007] Preferably, the pretreatment device is equipped with a heating chamber, which contains a heating plate. The airflow from the air classifier blows air into the heating chamber through the filter screen, transferring the heat in the heating chamber to the screening cylinder to dry the aluminum ash slag.

[0008] Preferably, the inner cylinder and the outer cylinder are sleeved together, and a heating block is provided between the inner cylinder and the outer cylinder.

[0009] Preferably, the lower end of the inner cylinder is a conical structure, and the lower end of the conical structure is connected to a forming tube, which is a cylindrical structure. The pre-formed product is continuously extruded after being squeezed by a spiral conveyor rod.

[0010] Preferably, the curing and shaping device further includes a fixed support column and a limiting top plate. The upper end of the fixed support column is fixedly connected to the limiting top plate. The fixed support column is sleeved with the movable turntable. A drive motor is provided at the bottom of the movable turntable to control the intermittent rotation of the movable turntable.

[0011] Preferably, the movable turntable has six workstations, three of which are located below the limiting top plate, and the output end of the hydraulic cylinder is equipped with a pressure plate to pressurize and cure the pre-formed product in three stages.

[0012] Preferably, the inner wall of the dispersion cylinder is provided with staggered protrusions.

[0013] Another technical problem to be solved by the present invention is to provide a treatment method for a complete set of equipment for hot pressing solidification and harmless treatment of aluminum ash slag, including the following steps:

[0014] Pretreatment stage: Aluminum ash slag is screened into particles of <2mm, 2-10mm and >10mm by a screening cylinder, metal particles are separated by an air classifier, and non-metal particles are crushed and mixed with <2mm particles for grinding.

[0015] Mixing and stirring stage: Add stabilizing agents and binders in a measured amount and mix them evenly with aluminum ash slag in a twin-shaft mixer;

[0016] Hot pressing and curing stage: The mixture is humidified, extruded and pre-shaped in a heated pre-compression cylinder, and then formed into a cured block after being pressurized and heated in stages by a curing and shaping device;

[0017] Exhaust gas treatment: The exhaust gas is purified and discharged through a cyclone dust collector and a spray tower.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention proposes a complete set of equipment and methods for hot-pressing solidification and harmless treatment of aluminum ash slag. A rotary screening drum combined with air classification, crushing, and grinding processes achieves homogenization of aluminum ash slag particle size, improving subsequent reaction efficiency. Simultaneous drying reduces moisture content, preventing water vapor from affecting strength during hot pressing. Through the linkage of screening, air classification, and crushing, the aluminum recovery rate is high, large particles are directly recycled, and non-metallic particles are fully utilized. Pre-pressing, three-stage shaping, and temperature control enhance the compressive strength of the solidified body, and the leaching toxicity of heavy metals is lower than national standards. PLC control of quantitative feeding, screw conveying, and intermittent rotation enables continuous production. The modular design reduces floor space, and the entire process is enclosed. Exhaust gas is treated by dust removal and spraying before being discharged in compliance with standards, preventing secondary pollution. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the complete set of equipment for hot pressing, solidification, and harmless treatment of aluminum ash slag according to the present invention.

[0021] Figure 2 This is a diagram showing the internal structure of the pretreatment device of the present invention;

[0022] Figure 3 For the present invention Figure 2 Front view;

[0023] Figure 4 This is a diagram showing the internal structure of the mixing and stirring device of the present invention;

[0024] Figure 5 This is a structural diagram of the thermosetting curing component of the present invention;

[0025] Figure 6 This is a structural diagram of the curing and shaping device of the present invention.

[0026] In the diagram: 1. Pretreatment device; 11. Screening cylinder; 111. Conical feed inlet; 112. Dispersion cylinder; 1121. Protrusion; 113. First screen; 114. Second screen; 115. Connecting rod; 116. First motor; 12. Small particle size channel; 13. Medium particle size channel; 131. Air classifier; 132. Metal recovery channel; 1321. Inclined plate; 133. Non-metal recovery channel; 1331. Crushing roller; 134. Filter screen; 14. Large particle size channel; 15. Heating chamber; 151. Heating plate; 16. Motor box; 161. Second motor; 162. Grinding block; 17. Grinding tank; 2. Mixing and stirring device; 21. Twin-shaft mixer; 22. Quantitative feeding hopper; 4. Heating and pre-compression cylinder; 41. Inner cylinder; 411. Water spray pipe; 412. Vent hole; 413. Screw conveyor rod; 414. Forming tube; 42. Outer cylinder; 5. Curing and shaping device; 51. Fixed support column; 52. Limiting top plate; 53. Movable turntable; 531. Shaping cylinder; 5311. Heating wire; 532. Hydraulic cylinder; 533. Pressure plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] To address the shortcomings of existing hot-press curing technology, which, while achieving harmlessness, suffers from insufficient pretreatment, low metal recovery rates, and inadequate stability of the cured body, traditional equipment often employs a split design. This results in low efficiency and high energy consumption in the integration of screening, crushing, mixing, and hot-pressing processes. Please refer to [link / reference needed]. Figures 1-6 This embodiment provides the following technical solution:

[0029] The complete set of equipment for hot pressing curing and harmless treatment of aluminum ash slag includes a pretreatment device 1, a mixing and stirring device 2, and a hot pressing curing component. The pretreatment device 1 is responsible for screening, crushing, and drying to remove large particle impurities, homogenize the particle size of aluminum ash slag, improve the efficiency of subsequent reactions, reduce moisture content, and avoid water vapor affecting the strength of the solidified body during hot pressing. The mixing and stirring device 2 is used to mix the homogeneous aluminum ash slag particles with stabilizing agents and binders. The mixed material is sent to the hot pressing curing component for heating and pressing into shape.

[0030] Specifically, a screening cylinder 11 is inclinedly arranged at the upper end of the pretreatment device 1. The screening cylinder 11 includes a conical feed inlet 111, a dispersing cylinder 112, a first screen 113, and a second screen 114 connected in sequence, and a connecting rod 115 disposed within the first screen 113 and the second screen 114. One end of the connecting rod 115 passes through the pretreatment device 1 and is connected to a first motor 116. The connecting rod 115 is fixedly connected to the conical feed inlet 111, the first screen 113, and the second screen 114 respectively through a bracket. The first motor 116 drives the connecting rod 115 to rotate, thereby driving the conical feed inlet 111, the first screen 113, and the second screen 114 to rotate. The conical feed inlet 111, the dispersing cylinder 112, the first screen 113, and the second screen 114 rotate. Aluminum ash slag enters the dispersing cylinder 112 from the conical feed inlet 111. The inner wall of the dispersing cylinder 112 is provided with staggered protrusions 1121. After the dispersing cylinder 112 rotates, the aluminum ash slag is dispersed under the action of the protrusions 1121 and rolls into the first screen 113 and the second screen 114 under the action of gravity. The finest aluminum ash slag particles pass through the first screen 113, while the aluminum ash slag particles that cannot pass through the first screen 113 slide to the second screen 114 for further screening.

[0031] Correspondingly, the pretreatment device 1 is positioned below the first screen 113 and the second screen 114 and is provided with a small-diameter channel 12 corresponding to the first screen 113 and a medium-diameter channel 13 corresponding to the position of the second screen 114. The pretreatment device 1 is provided with a sliding ring that supports the first screen 113 and the second screen 114, which fixes the first screen 113 and the second screen 114 while meeting the rotation requirements of the first screen 113 and the second screen 114. At the same time, the end of the second screen 114 and the inner wall of the pretreatment device 1 have a large-diameter channel 14, which allows aluminum ash slag that can pass through the second screen 114 to fall into the medium-diameter channel 13, while aluminum ash slag that cannot pass through the second screen 114 slides down from the large-diameter channel 14.

[0032] More specifically, the first screen 113 filters out particles and fine powder with a diameter <2mm, which are the main materials for hot pressing and curing. The second screen 114 filters out aluminum-rich particles with a diameter of 2-10mm, which need to be further separated into aluminum particles. The remaining impurities are crushed and used as materials for hot pressing and curing. Those that cannot pass through the second screen 114 are large particles with a diameter >10mm. These large particles need to be further recovered as aluminum blocks, which can be directly recycled back into the furnace. Therefore, an air classifier 131 is installed on the side wall of the medium particle size channel 13. A metal recovery channel 132 and a non-metal recovery channel 133 are installed at the lower end of the medium particle size channel 13. An inclined filter screen 134 is installed above the non-metal recovery channel 133. The aluminum-rich particles are collected at the upper end of the medium particle size channel 13 and fall down, passing through the air classifier 131. In the area, the air separator 131 blows air onto the filter screen 134. Due to their greater weight, metal particles fall vertically into the metal recovery channel 132, while non-metallic particles are blown towards the filter screen 134 by the air force. The non-metallic particles fall into the non-metallic recovery channel 133. When they come into contact with the filter screen 134, they are also intercepted by the filter screen 134 and eventually slide into the non-metallic recovery channel 133. The air moves upward through the filter screen 134. The pretreatment device 1 above the filter screen 134 is equipped with a heating chamber 15, which contains a heating plate 151. The air from the filter screen 134 blows the heat from the heating plate 151 upward, and finally through the top of the heating chamber 15, it heats the first screen 113 and the second screen 114, drying the aluminum ash residue that is turned over inside the first screen 113 and the second screen 114.

[0033] In addition, an inclined plate 1321 is provided at the lower end of the metal recycling channel 132. The inclined plate 1321 is connected to the large particle channel 14 and extends out to the pretreatment device 1. The metal particles separated by air are combined with large particle impurities and recycled again. Two crushing rollers 1331 are provided in the non-metal recycling channel 133. The crushing rollers 1331 rotate in opposite directions under the drive of the motor to crush the non-metal particles.

[0034] It should be noted that a motor housing 16 is provided between the non-metallic recycling channel 133 and the small particle size channel 12. A second motor 161 is installed inside the motor housing 16. A grinding block 162 is installed at the output end of the second motor 161. The lower ends of the non-metallic recycling channel 133 and the small particle size channel 12 are connected, and the lower ends of both the non-metallic recycling channel 133 and the small particle size channel 12 are inclined structures, guiding the aluminum ash slag towards the grinding block 162. A grinding trough 17 is provided near the grinding block 162 in the pretreatment device 1. The grinding trough 17 wraps around the grinding block 162, and the aluminum ash slag falls into the gap between the grinding trough 17 and the grinding block 162. After the grinding block 162 rotates, the aluminum ash slag is further crushed, reducing its particle size to less than 5mm. The lower end of the grinding trough 17 is a conical structure. The lowest point of the grinding trough 17 is connected to the mixing and stirring device 2 through a first screw conveyor. The ground aluminum ash slag is sent to the mixing and stirring device 2 by the first screw conveyor for mixing and stirring.

[0035] In this embodiment, the mixing device 2 includes a twin-shaft mixer 21 and a quantitative feeding hopper 22. The quantitative feeding hopper 22 is provided at the upper end of the twin-shaft mixer 21. The quantitative feeding hopper 22 realizes quantitative feeding through a screw feeder, and the feeding speed is adjusted in real time and the formula ratio is matched through the integration of control system and PLC. The quantitative feeding hopper 22 stores stabilizing agents and binders, etc. The stabilizing agents mainly include lime, phosphate, and sulfide, which are used to treat fluorides and heavy metals. The binders include, but are not limited to, silicate cement, slag powder and fly ash. The first screw conveyor transports aluminum ash slag to the twin-shaft mixer 21, and the quantitative feeding hopper 22 feeds the material quantitatively. The twin-shaft mixer 21 mixes the materials evenly, and then the second screw conveyor sends the mixture to the hot pressing curing component.

[0036] In this embodiment, the hot-press curing assembly includes a heating pre-compression cylinder 4 and a curing and shaping device 5. The heating pre-compression cylinder 4 includes an inner cylinder 41 and an outer cylinder 42. A heating block is provided between the inner cylinder 41 and the outer cylinder 42. The heating block heats the inner cylinder 41, while the outer cylinder 42 serves to keep it warm. A second screw conveyor delivers the mixed material into the inner cylinder 41. A water spray pipe 411 is provided inside the upper end of the inner cylinder 41. The water spray pipe 411 sprays water onto the mixed material, allowing the cement to work. At the same time, the top of the inner cylinder 41... A vent 412 is provided, which is connected to the top of the outer cylinder 42. A spiral conveying rod 413 is provided inside the inner cylinder 41. The spiral conveying rod 413 pushes the mixed material containing water towards each other. The spiral conveying rod 413 extrudes the material while conveying it. The lower end of the inner cylinder 41 has a conical structure, and the lower end of the conical structure is connected to a forming tube 414. The continuously moving mixed material is heated by the inner cylinder 41 and pushed into the forming tube 414 to be extruded into a cylindrical shape and pre-formed.

[0037] The lower end of the forming tube 414 is provided with a curing and shaping device 5. The curing and shaping device 5 includes a fixed support column 51, a limiting top plate 52 and a movable turntable 53. The upper end of the fixed support column 51 is fixedly connected to the limiting top plate 52. The movable turntable 53 is sleeved on the fixed support column 51. A drive motor is provided at the bottom of the movable turntable 53 to control the intermittent rotation of the movable turntable 53.

[0038] Specifically, the upper surface of the movable turntable 53 is provided with shaping cylinders 531 at equal intervals. The lower end of the shaping cylinder 531 is provided with a hydraulic cylinder 532. The output end of the hydraulic cylinder 532 is provided with a pressure plate 533. The edge of the pressure plate 533 is in contact with the inner wall of the shaping cylinder 531. The hydraulic cylinder 532 pushes the pressure plate 533 to move upward, so as to perform hot pressing and shaping on the pre-formed product in the shaping cylinder 531.

[0039] It is important to understand that the movable turntable 53 has six workstations, and the limiting top plate 52 only contacts three of these workstations. When the pressure plate 533 is working, the limiting top plate 52 blocks the upper end of the shaping cylinder 531. When the movable turntable 53 drives the shaping cylinder 531 to rotate to the lower end of the forming tube 414, the pre-formed product extruded from the forming tube 414 enters the shaping cylinder 531. At this time, the movable turntable 53 is in a stopped state until the pre-formed product fills the shaping cylinder 531. The movable turntable 53 then rotates intermittently, causing the shaping cylinder 531 to misalign with the forming tube 414, cutting off the pre-formed product, and driving the pre-formed product in the shaping cylinder 531 into the area below the limiting top plate 52. The hydraulic cylinder 532 controls the pressure plate 533. The preformed product is extruded upwards and compressed. A heating wire 5311 is embedded in the inner wall of the upper end of the shaping cylinder 531 to continuously heat the preformed product. When the movable turntable 53 rotates to the next station, the hydraulic cylinder 532 controls the pressure plate 533 to move downwards. There is no extrusion pressure at the lower end of the preformed product. Under the control of the shaping cylinder 531, it moves along the lower surface of the limiting top plate 52. The preformed product stops at three positions below the limiting top plate 52. The hydraulic cylinder 532 controls the pressure plate 533 to compress the preformed product three times to solidify and shape it. When the shaping cylinder 531 rotates out of the coverage area of ​​the limiting top plate 52 again, the hydraulic cylinder 532 controls the pressure plate 533 to push the solidified product out of the shaping cylinder 531.

[0040] It should be noted that the top of the pretreatment device 1, one side of the twin-shaft mixer 21, and the upper end of the outer cylinder 42 in this embodiment are all equipped with gas discharge pipes. All gas discharge pipes are connected to the cyclone dust collector and the spray tower to remove dust and harmful gases.

[0041] To better demonstrate the processing flow of the complete set of equipment for hot-pressing solidification and harmless treatment of aluminum ash slag, this embodiment proposes a treatment method for the complete set of equipment for hot-pressing solidification and harmless treatment of aluminum ash slag, including the following steps:

[0042] Preprocessing stage:

[0043] Aluminum ash slag enters the rotating dispersion cylinder 112 through the conical feed inlet 111, where it is dispersed by the protrusions 1121. Particles <2mm are then screened out through the first screen 113 and collected in the small particle size channel 12. Particles of 2-10mm enter the medium particle size channel 13, while particles >10mm are discharged from the large particle size channel 14. The air classifier 131 operates within the medium particle size channel 13, where metal particles fall into the metal recycling channel 132 and are combined with larger particles for reuse. Non-metallic particles are crushed by the crushing roller 1331 and, together with the <2mm particles, enter the grinding tank 17 to be crushed to <5mm. The particles are then conveyed by the first screw conveyor to the mixing and stirring device 2. During the screening process, hot air generated by the heating plate 151 dries the aluminum ash slag, reducing its moisture content.

[0044] Mixing and stirring stage:

[0045] Stabilizing agents and binders are added to the quantitative feeding hopper 22 in proportion, and then mixed evenly with aluminum ash slag in the twin-shaft mixer 21.

[0046] Hot pressing curing stage:

[0047] The mixture enters the heating pre-compression cylinder 4, is humidified by the water spray pipe 411, is squeezed and heated by the screw conveyor 413, and the pre-formed columnar body is extruded from the forming pipe 414. The pre-formed body is filled into the shaping cylinder 531, the movable turntable 53 rotates intermittently, the hydraulic cylinder 532 applies pressure in three stages, and the heating wire 5311 promotes curing, and finally the high-strength cured block is ejected.

[0048] Exhaust gas treatment:

[0049] The exhaust gas from the pretreatment, mixing, and hot pressing stages is purified by a cyclone dust collector and a spray tower before being discharged.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A complete set of equipment for hot-pressing solidification and harmless treatment of aluminum ash slag, comprising a pretreatment device (1), a mixing and stirring device (2), and a hot-pressing solidification component, wherein the pretreatment device (1), the mixing and stirring device (2), and the hot-pressing solidification component are connected by a screw conveyor for material transfer, characterized in that, The pretreatment device (1) is equipped with a screening cylinder (11), which includes a conical feed inlet (111), a dispersion cylinder (112), a first screen (113), and a second screen (114) connected in sequence. The inner wall of the dispersion cylinder (112) is provided with staggered protrusions (1121). The first screen (113) and the second screen (114) are connected to the first motor (116) through a connecting rod (115) and rotate to screen aluminum ash slag. The pretreatment device (1) is also provided with a small particle size channel (12), a medium particle size channel (13), and a large particle size channel (14), which correspond to different particle sizes, respectively. The medium-diameter aluminum ash slag particles; the medium-diameter channel (13) is equipped with an air classifier (131), the lower end of the medium-diameter channel (13) is divided into a metal recovery channel (132) and a non-metal recovery channel (133), the non-metal recovery channel (133) is equipped with a crushing roller (1331) and an inclined filter screen (134), the metal particles after air classification are combined with the impurities in the large-diameter channel (14) for recovery; the lower ends of the non-metal recovery channel (133) and the small-diameter channel (12) are connected, and a grinding block (162) and a grinding groove (17) are provided, the central shaft of the grinding block (162) is connected to a second motor (161); The pretreatment device (1) is equipped with a heating chamber (15), and a heating plate (151) is provided inside the heating chamber (15). The airflow of the air classifier (131) blows into the heating chamber (15) through the filter screen (134) to transfer the heat inside the heating chamber (15) to the screening cylinder (11) to dry the aluminum ash slag. The mixing device (2) includes a twin-shaft mixer (21) and a quantitative feeding bin (22), wherein the quantitative feeding bin (22) feeds material quantitatively to the twin-shaft mixer (21) via a screw feeder; The hot-press curing assembly includes a heating pre-compression cylinder (4) and a curing and shaping device (5); the heating pre-compression cylinder (4) is provided with an inner cylinder (41) and an outer cylinder (42), and the inner cylinder (41) is provided with a spiral conveying rod (413) and a water spray pipe (411). The curing and shaping device (5) includes a fixed support column (51), a limiting top plate (52), and a movable turntable (53). The movable turntable (53) is provided with shaping cylinders (531) at equal intervals. The shaping cylinders (531) are provided with hydraulic cylinders (532) and heating wires (5311) for segmented pressure curing of preformed products. The upper end of the fixed support column (51) is fixedly connected to the limiting top plate (52). The fixed support column (51) is sleeved with the movable turntable (53). The bottom of the movable turntable (53) is provided with a drive motor. The movable turntable (53) has six workstations, three of which are located below the limiting top plate (52). The output end of the hydraulic cylinder (532) is provided with a pressure plate (533). The gas discharge pipes of the pretreatment device (1), the twin-shaft mixer (21), and the outer cylinder (42) are connected to the cyclone dust collector and the spray tower.

2. The complete set of equipment for hot-pressing solidification and harmless treatment of aluminum ash slag according to claim 1, characterized in that, The inner cylinder (41) and the outer cylinder (42) are sleeved together, and a heating block is provided between the inner cylinder (41) and the outer cylinder (42).

3. The complete set of equipment for hot-pressing solidification and harmless treatment of aluminum ash slag according to claim 2, characterized in that, The lower end of the inner cylinder (41) is a conical structure, and the lower end of the conical structure is connected to a forming tube (414), which is a cylindrical structure.

4. A treatment method for a complete set of equipment for hot-pressing solidification and harmless treatment of aluminum ash slag as described in any one of claims 1-3, characterized in that, Includes the following steps: Pretreatment stage: Aluminum ash slag is screened into <2mm, 2-10mm and >10mm particles by screening cylinder (11), metal particles are separated by air classifier (131), and non-metal particles are crushed and mixed with <2mm particles for grinding. Mixing and stirring stage: quantitatively add stabilizing agents and binders, and mix them evenly with aluminum ash slag in a twin-shaft mixer (21); Hot pressing and curing stage: The mixture is humidified, extruded and pre-formed in the heated pre-press cylinder (4), and then formed into a solidified block after being pressurized and heated in sections by the curing and shaping device (5); exhaust gas treatment: the exhaust gas is purified and discharged through a cyclone dust collector and a spray tower.

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