Industrial solid waste treatment and recovery equipment and recovery treatment process

Abstract

The invention provides industrial solid waste treatment and recovery equipment and a recovery treatment process, and relates to the technical field of solid waste treatment, the industrial solid waste treatment and recovery equipment comprises a heating seat, a liquid storage tank, a filtering tank, a feeding mechanism and a dispersing mechanism; the liquid storage tank is located in the heating base, the filtering tank is located in the liquid storage tank, a top cover is installed at the top of the filtering tank, and a positioning base is fixedly arranged at the top of the liquid storage tank and located on one side of the filtering tank; the feeding mechanism comprises a feeding motor mounted at the top of the positioning seat, a feeding barrel is mounted in the filter tank in a penetrating manner, and two feeding pipes are mounted at the top of the feeding barrel in a penetrating manner; the dispersing mechanism comprises a positioning frame fixedly arranged on the side wall of the filtering tank. According to the scheme, the residues can be uniformly scattered on the total cross section of the filter tank in a thin curtain shape through the fan-shaped reciprocating dispersion plate, so that the thickness of a material layer is consistent, the solid-liquid contact area is increased, slight vibration generated by reciprocating motion can avoid residue caking, deionized water is in full contact with each particle, and the leaching rate of valuable substances can be remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of solid waste treatment, and more particularly to an industrial solid waste treatment and recycling equipment and recycling process. Background Technology

[0002] During the aluminum extraction and electrolysis process, a large amount of red mud and cathode carbon blocks are generated. The large-scale generation of these solid wastes seriously restricts the sustainable development of the aluminum industry. At present, most of the processes for recovering components from red mud focus on the recovery of single components, and pay little attention to other components in the residue.

[0003] In the past, cathode carbon blocks were often directly landfilled, but the fluorides and cyanides in them could seep into the soil and pollute groundwater, causing significant impacts on the health of plants and animals and the ecological balance. Therefore, they were classified as hazardous solid waste. Currently, the treatment methods for waste carbon cathodes include flotation, leaching with soluble aluminum salt solutions, high-temperature treatment, acid leaching, and alkaline leaching.

[0004] In existing technologies, the non-magnetic residue generated after traditional cathode carbon block treatment needs to be mixed with deionized water for leaching again. During the leaching process, the non-magnetic residue is not easy to mix fully with deionized water, which can easily affect the leaching efficiency and the overall quality of the final product.

[0005] Therefore, it is necessary to provide an industrial solid waste treatment and recycling equipment and recycling process to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides an industrial solid waste treatment and recycling equipment and process, which solves the problems in related technologies where non-magnetic residues are inconvenient to handle and deionized water is not fully mixed for leaching, which can easily affect leaching efficiency and the overall quality of the final product.

[0007] To solve the above-mentioned technical problems, the present invention provides an industrial solid waste treatment and recycling device, including a heating base, a liquid storage tank, a filter tank, a feeding mechanism, and a dispersing mechanism;

[0008] The liquid storage tank is located inside the heating base, the filter tank is located inside the liquid storage tank, a top cover is installed on the top of the filter tank, and a positioning seat is fixed on the top of the liquid storage tank and on one side of the filter tank;

[0009] The feeding mechanism includes a feeding motor installed on the top of the positioning seat, a feeding cylinder is installed through the inside of the filter tank, and two feeding pipes are installed through the top of the feeding cylinder;

[0010] The dispersing mechanism includes a positioning frame fixed to the side wall of the filter tank, a rotating rod rotatably connected to the positioning frame and inside the filter tank, a driven rod rotatably connected inside the filter tank and above the rotating rod, an eccentric plate and a driven pulley respectively connected by keyways at both ends of the rotating rod, a drive pulley connected by keyways to the output shaft of the feeding motor, a first belt sleeved on the outer walls of the drive pulley and the driven pulley, and a spiral rod connected by keyways inside the feeding cylinder to the drive pulley;

[0011] The driven rod has a groove plate and a dispersion plate fixed on its outer wall and inside the filter tank. The eccentric plate has a guide wheel rotatably connected to its outer wall and inside the groove plate. A slag discharge pipe is installed at the bottom of the filter tank, and a liquid discharge pipe is installed at the bottom of the liquid storage tank.

[0012] Preferably, the drive pulley shaft is rotatably connected to the feed cylinder shaft, and the outer wall of the screw rod and the inner wall of the feed cylinder are in contact with each other.

[0013] Preferably, the outer wall of the guide wheel and the inner wall of the trough plate are in close contact with each other, and the dispersing plate is directly below the discharge port of the feeding cylinder.

[0014] Preferably, it also includes auxiliary mechanisms;

[0015] The auxiliary mechanism includes a liquid storage cylinder installed inside the positioning seat. An outlet pipe and an inlet pipe are respectively installed through the outer wall of the liquid storage cylinder. An inlet check valve is installed inside the inlet pipe. An elastic tube is installed at the outlet end of the outlet pipe inside the filter tank. A spray pipe is installed at the outlet end of the elastic tube.

[0016] A screw is fixed at the axis of the driven rod and outside the filter tank. A positioning rod is fixed on the outer wall of the filter tank above and below the screw. A reciprocating frame is threadedly connected to the outer wall of the screw. A piston is fixed on the outer wall of the reciprocating frame and coaxially with the liquid storage cylinder. A positioning plate is installed on the side wall of the dispersion plate.

[0017] Preferably, the positioning plate and the nozzle are fixedly installed together, and the elastic tube has a spiral-shaped reset elastic design.

[0018] Preferably, the reciprocating frame slides horizontally about the positioning rod, and the outer wall of the piston and the inner wall of the liquid storage cylinder are in close contact.

[0019] Preferably, it also includes a mixing mechanism;

[0020] The mixing mechanism includes a mounting bracket installed on the upper surface of the top cover, a mixing motor mounted on the top of the mounting bracket, a first pulley connected to the output shaft of the mixing motor via a keyway, a mixing frame connected to the keyway at the center of the first pulley and inside the filter tank, a rotating shaft installed inside the storage tank, a second pulley connected to the top of the rotating shaft via a keyway, a second belt sleeved on the outer walls of the first and second pulleys, an auxiliary frame fixed inside the storage tank and below the rotating shaft, and an auxiliary pipe installed through the side of the storage tank.

[0021] Preferably, the outlet end of the auxiliary tube is located on one side of the auxiliary frame, and the top of the mixing frame is rotatably connected to the center of the top cover via a bearing.

[0022] An industrial solid waste treatment and recycling process includes the following steps:

[0023] S1: Place the red mud and cathode carbon blocks into a vibrating mill for crushing. The crushed material is then sieved through a standard sieve of a certain mesh size. After sieving, it is dried for a period of time for later use.

[0024] S2: Weigh red mud and sodium hydroxide and mix them in a certain proportion. Under specific temperature conditions, carry out an alkaline fusion reaction for a period of time. After the alkaline fusion is completed, place the mixture in a graphite crucible and calcine it at a specific calcination temperature for a period of time to further promote the reaction and the conversion of the product.

[0025] S3: The calcined product is placed in a polytetrafluoroethylene water immersion reactor, deionized water is added according to a certain solid-liquid ratio, and the reaction system is stirred and reacted for a period of time under specific temperature conditions. The solid and liquid are separated to obtain filter residue A and filtrate A.

[0026] S4: Analyze filtrate A, adjust the molar ratio of SiO2 / Al2O3 / Na2O in the filtrate, transfer it to an autoclave, and perform hydrothermal crystallization at a specific temperature for a period of time. Filter to obtain filter residue B and filtrate B. Add a certain amount of deionized water to filter residue B and wash it with water according to a certain solid-liquid ratio to remove impurities and unreacted reagents attached to the surface. After washing, filter residue B is dried to obtain pure 4A zeolite product.

[0027] S5: The filter residue A and cathode carbon block are mixed and granulated according to a certain mass ratio, placed in a tube furnace, and reduced and roasted at a specific temperature under a nitrogen atmosphere for a period of time. The volatile fluorine-containing gas generated during the roasting process is alkali-adsorbed through the device. After the roasting product is cooled, the magnetic part is separated by wet magnetic separation to obtain a magnetic concentrate with high iron grade.

[0028] S6: Add deionized water to the non-magnetic residue remaining after magnetic separation and soak it in water at a certain solid-liquid ratio and a specific temperature for a period of time. Filter to obtain filter residue C and fluoride-containing filtrate C. Filter residue C can be used in the construction industry. Mix filtrate B, filtrate C and alkaline adsorption solution, add calcium chloride to adjust the pH to neutral, evaporate and crystallize to precipitate calcium fluoride. Add deionized water to the non-magnetic residue and complete the leaching in the filter tank. Filter residue C is finally discharged through the slag discharge pipe. Fluoride-containing filtrate C is filtered through the filter tank into the storage tank. Finally, filtrate B and filtrate C are adjusted and mixed in the storage tank and finally discharged through the drain pipe.

[0029] Compared with related technologies, the industrial solid waste treatment and recycling equipment and recycling process provided by the present invention have the following beneficial effects:

[0030] The fan-shaped reciprocating dispersion plate can evenly spread the residue in a thin curtain across the entire cross-section of the filter tank, ensuring a consistent material layer thickness and increasing the solid-liquid contact area. Furthermore, the slight vibrations generated by the reciprocating motion prevent residue clumping, allowing deionized water to fully contact each particle, significantly improving the leaching rate of valuable substances. This enhances the utilization rate of solid waste, transforming materials originally considered waste into reusable valuable resources, truly achieving resource recycling, greatly improving resource utilization efficiency, fundamentally reducing dependence on primary resources, and providing strong technical support for the practice of sustainable development concepts in the electrolytic aluminum industry. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 The optimal structural schematic diagram provided for this invention;

[0033] Figure 2 for Figure 1 The enlarged structural diagram at point A is shown below;

[0034] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the storage tank and filter tank.

[0035] Figure 4 for Figure 3 The enlarged structural diagram at point B is shown below;

[0036] Figure 5 for Figure 3 The diagram shows the structure viewed from below.

[0037] Figure 6 A detailed structural diagram of the feeding mechanism, dispersing mechanism, and auxiliary mechanism provided by the present invention;

[0038] Figure 7 for Figure 6 The diagram shows a side view of the structure.

[0039] Figure 8 for Figure 6 The diagram shows a cross-sectional view of the feed pipe, feed cylinder, and liquid storage cylinder.

[0040] Figure 9 A schematic diagram of the rotating working state of the feeding mechanism, dispersing mechanism and auxiliary mechanism provided by the present invention;

[0041] Figure 10 The present invention provides a process flow diagram for the treatment and recycling of industrial solid waste.

[0042] Explanation of icon numbers:

[0043] 1. Heating base; 2. Liquid storage tank; 3. Filter tank; 4. Top cover;

[0044] 5. Feeding mechanism; 51. Feeding motor; 52. Feeding cylinder; 53. Drive pulley; 54. Driven pulley; 55. First belt; 56. Feeding tube; 57. Screw rod.

[0045] 6. Dispersion mechanism; 61. Positioning frame; 62. Rotating rod; 63. Eccentric plate; 64. Guide wheel; 65. Driven rod; 66. Slot plate; 67. Dispersion plate; 68. Positioning plate;

[0046] 7. Auxiliary mechanism; 71. Screw; 72. Positioning rod; 73. Reciprocating frame; 74. Piston; 75. Liquid storage tank; 76. Inlet pipe; 77. Inlet check valve; 78. Outlet pipe; 79. Elastic tube; 710. Nozzle.

[0047] 8. Mixing mechanism; 81. Mounting bracket; 82. Mixing motor; 83. First pulley; 84. Mixing frame; 85. Rotating shaft; 86. Second pulley; 87. Second belt; 88. Auxiliary frame;

[0048] 9. Positioning seat;

[0049] 10. Slag discharge pipe, 11. Liquid discharge pipe, 12. Auxiliary pipe. Detailed Implementation

[0050] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0051] This invention provides an industrial solid waste treatment and recycling equipment and recycling process.

[0052] First embodiment:

[0053] Please see Figure 1 , Figure 2 , Figures 6 to 8 An industrial solid waste treatment and recycling device includes a heating base 1, a liquid storage tank 2, a filter tank 3, a feeding mechanism 5, and a dispersing mechanism 6;

[0054] The liquid storage tank 2 is located inside the heating base 1, the filter tank 3 is located inside the liquid storage tank 2, the top cover 4 is installed on the top of the filter tank 3, and a positioning seat 9 is fixed on the top of the liquid storage tank 2 and on one side of the filter tank 3.

[0055] The feeding mechanism 5 includes a feeding motor 51 installed on the top of the positioning seat 9, and a feeding cylinder 52 is installed through the inside of the filter tank 3. Two feeding pipes 56 are installed through the top of the feeding cylinder 52.

[0056] The dispersing mechanism 6 includes a positioning frame 61 fixed to the side wall of the filter tank 3. The positioning frame 61 and the filter tank 3 are rotatably connected to a rotating rod 62. The filter tank 3 is rotatably connected to a driven rod 65 inside and above the rotating rod 62. The two ends of the rotating rod 62 are respectively keyway connected to an eccentric plate 63 and a driven pulley 54. The output shaft of the feeding motor 51 is keyway connected to a drive pulley 53. The outer walls of the drive pulley 53 and the driven pulley 54 are fitted with a first belt 55. The drive pulley 53 is keyway connected to a spiral rod 57 inside the feeding cylinder 52.

[0057] The driven rod 65 is fixedly provided with a groove plate 66 and a dispersion plate 67 on its outer wall and inside the filter tank 3. The eccentric plate 63 is rotatably connected to a guide wheel 64 on its outer wall and inside the groove plate 66. The filter tank 3 is equipped with a slag discharge pipe 10 and the liquid storage tank 2 is equipped with a liquid discharge pipe 11.

[0058] The drive pulley 53 is rotatably connected to the feed cylinder 52 at its shaft center, and the outer wall of the screw rod 57 and the inner wall of the feed cylinder 52 are in contact with each other.

[0059] The outer wall of the guide wheel 64 and the inner wall of the trough plate 66 are in contact with each other, and the dispersing plate 67 is directly below the discharge port of the feeding cylinder 52.

[0060] Please see Figure 6 and Figure 7 Non-magnetic residue is continuously fed into the feeding cylinder 52 through the feeding pipe 56. The user starts the feeding motor 51 to control the drive pulley 53 and the screw rod 57 to rotate. The screw rod 57 rotates inside the feeding cylinder 52. During the rotation, the non-magnetic residue fed by the feeding pipe 56 is screwed to the outlet position of the feeding cylinder 52 and finally falls into the filter tank 3.

[0061] The drive pulley 53 rotates and the first belt 55 controls the driven pulley 54 to make the rotating rod 62 rotate within the positioning frame 61. When the rotating rod 62 rotates, it controls the eccentric plate 63 to drive the guide wheel 64 to rotate eccentrically. When the guide wheel 64 rotates eccentrically, it is subjected to force to control the trough plate 66 to form an adaptive fan-shaped reciprocating forward and reverse rotation. Therefore, the trough plate 66 can control the driven rod 65 to drive the dispersing plate 67 to reciprocate fan-shaped flipping motion below the outlet end of the feed cylinder 52. The falling non-magnetic residue will fall on the dispersing plate 67 and be evenly dispersed in the filter tank 3 by the dispersing plate 67.

[0062] This embodiment:

[0063] The feed rate conveyed by the screw 57 can be precisely controlled by adjusting the speed of the feeding motor 51, which can continuously, uniformly and quantitatively feed non-magnetic residues into the filter tank 3. Secondly, the feeding cylinder 52 adopts a fully enclosed cylinder structure, so there is no risk of dust flying or acid mist leakage during the conveying process.

[0064] If non-magnetic residues are directly deposited into filter tank 3, they will form localized material compaction and uneven thickness, preventing deionized water from quickly penetrating into the material layer. This results in insufficient reaction at the edges and inadequate reaction in the center. The fan-shaped reciprocating dispersion plate 67 can evenly spread the residues in a thin curtain across the entire cross-section of filter tank 3, ensuring a consistent material layer thickness and increasing the solid-liquid contact area. Furthermore, the slight vibrations generated by the reciprocating motion prevent residue clumping, allowing deionized water to fully contact each particle. This significantly improves the leaching rate of valuable substances, thereby enhancing the utilization rate of solid waste. Materials that were originally considered waste are transformed into reusable valuable resources, truly achieving resource recycling and greatly improving resource utilization efficiency. This fundamentally reduces dependence on primary resources and provides strong technical support for the practice of sustainable development in the electrolytic aluminum industry.

[0065] Second embodiment:

[0066] Please refer to Figure 1 , Figure 2 , Figures 6 to 9 It also includes auxiliary mechanisms 7;

[0067] The auxiliary mechanism 7 includes a liquid storage cylinder 75 installed inside the positioning seat 9. An outlet pipe 78 and an inlet pipe 76 are respectively installed through the outer wall of the liquid storage cylinder 75. An inlet one-way valve 77 is installed inside the inlet pipe 76. An elastic tube 79 is installed at the outlet end of the outlet pipe 78 and inside the filter tank 3. A spray pipe 710 is installed at the outlet end of the elastic tube 79.

[0068] A screw 71 is fixed at the axis of the driven rod 65 and outside the filter tank 3. A positioning rod 72 is fixed on the outer wall of the filter tank 3 above and below the screw 71. A reciprocating frame 73 is threadedly connected to the outer wall of the screw 71. A piston 74 is fixed on the outer wall of the reciprocating frame 73 and coaxially with the liquid storage cylinder 75. A positioning plate 68 is installed on the side wall of the dispersion plate 67.

[0069] The positioning plate 68 and the nozzle 710 are fixedly installed together, and the elastic tube 79 has a spiral-shaped reset elastic design.

[0070] The reciprocating frame 73 slides horizontally about the positioning rod 72, and the outer wall of the piston 74 and the inner wall of the liquid storage cylinder 75 are in close contact.

[0071] Please see Figures 6 to 9 In the first embodiment, the driven rod 65 can synchronously drive the screw 71 to rotate in both directions during the reciprocating forward and reverse rotation. When the screw 71 rotates in both directions, it can control the reciprocating frame 73 to move horizontally along the horizontal direction of the positioning rod 72 through the screw 71 in the rotating state. The horizontal movement conversion of the reciprocating frame 73 is realized through the rotating screw 71.

[0072] When the reciprocating frame 73 controls the piston 74 to push inside the liquid storage tank 75, it can push and squeeze the deionized water in the liquid storage tank 75 to the outlet pipe 78, through the elastic tube 79, and finally through the spray pipe 710 to inject into the filter tank 3.

[0073] When the reciprocating frame 73 drives the piston 74 to reset, the piston 74 will generate a suction force in the liquid storage tank 75. During the suction process, the liquid is drawn into the liquid storage tank 75 through the liquid inlet pipe 76 and the liquid inlet check valve 77. This reciprocating motion forms a pushing and suction, which can evenly add deionized water into the filter tank 3.

[0074] Understandably, the positioning rod 72 is used to slide and limit the reciprocating frame 73, which ensures that the reciprocating frame 73 can only move horizontally and will not rotate.

[0075] A deionized water tank can be installed externally on the inlet pipe 76, while the inlet check valve 77 only allows external water to flow into the storage tank 75 in one direction, which can prevent the deionized water inside the storage tank 75 from flowing back.

[0076] Please see Figure 8 and Figure 9During the reciprocating motion of the dispersion plate 67, the positioning plate 68 is driven to reciprocate. At this time, the positioning plate 68 controls the nozzle 710 to reciprocate following the movement trajectory of the positioning plate 68. Therefore, the range of deionized water sprayed by the nozzle 710 is also a fan-shaped trajectory. By setting the elastic tube 79, interference during the movement can be avoided.

[0077] This embodiment:

[0078] As the reciprocating motion of the dispersing plate 67 causes the residue to disperse and fall in a thin curtain, the simultaneously injected deionized water can form a uniform water curtain or water mist, which fully collides and coats the falling residue particles. Compared with the traditional method of piling up materials first and then spraying water, this synchronous contact mode can avoid local material drying and clumping or excessive moisture, allowing soluble fluoride salts to begin dissolving during the falling process, completing pre-leaching in advance, shortening the formal leaching time, and ensuring that the leaching rate of valuable substances is further improved.

[0079] The graphitized carbon powder and fluoride fine particles contained in the non-magnetic residue are easily blown away by the airflow during the reciprocating feeding process. Simultaneous injection of deionized water can wet the fine particles in real time, reducing the dust emission rate. This not only reduces the corrosion of equipment by fluoride dust and the health risks to operators, but also avoids the loss of valuable materials such as carbon powder, thus improving resource utilization.

[0080] Third embodiment:

[0081] Please see Figures 1 to 5 It also includes a hybrid mechanism 8;

[0082] The mixing mechanism 8 includes a mounting bracket 81 installed on the upper surface of the top cover 4. A mixing motor 82 is installed on the top of the mounting bracket 81. The output shaft of the mixing motor 82 is keyway connected to a first pulley 83. A mixing frame 84 is keyway connected at the axis of the first pulley 83 and inside the filter tank 3. A rotating shaft 85 is installed inside the liquid storage tank 2. A second pulley 86 is keyway connected to the top of the rotating shaft 85. A second belt 87 is sleeved on the outer wall of the first pulley 83 and the second pulley 86. An auxiliary frame 88 is fixed inside the liquid storage tank 2 and below the rotating shaft 85. An auxiliary pipe 12 is installed through the side of the liquid storage tank 2.

[0083] The outlet end of the auxiliary pipe 12 is located on one side of the auxiliary frame 88, and the top of the mixing frame 84 is rotatably connected to the top cover 4 at the center via a bearing.

[0084] Please refer to 3 to Figure 5 The user can start the mixing motor 82 to control the rotation of the first pulley 83 and the mixing frame 84. The mixing frame 84 rotates in the filter tank 3 to mix and leach out the non-magnetic residue and deionized water.

[0085] The first pulley 83 drives the second belt 87 to control the second pulley 86, causing the rotating shaft 85 to drive the auxiliary frame 88 to rotate inside the storage tank 2. At this time, the filtrate B and calcium chloride entering through the auxiliary pipe 12 are fully mixed to ensure that the liquid distribution in the storage tank 2 is uniform.

[0086] This embodiment:

[0087] The integrated design of filter tank 3 and storage tank 2 can be completed in the same equipment. The entire process of residue leaching reaction, leaching residue filtration and interception and leachate permeation collection is completed, eliminating the transfer and transportation steps. At the same time, the leachate can be directly stored in storage tank 2.

[0088] Secondly, during the leaching process of non-magnetic residue and deionized water in filter tank 3, filtrate C has been precipitated in storage tank 2. At this time, the rotation of mixing rack 84 synchronously drives auxiliary rack 88 to rotate. Auxiliary rack 88 fully mixes filtrate B and calcium chloride entering through auxiliary pipe 12 into storage tank 2. This ensures that various solutions in storage tank 2 are evenly distributed, which facilitates the extraction of valuable substances.

[0089] An industrial solid waste treatment and recycling process includes the following steps:

[0090] S1: Place the red mud and cathode carbon blocks into a vibrating mill for crushing. The crushed material is then sieved through a standard sieve of a certain mesh size. After sieving, it is dried for a period of time for later use.

[0091] S2: Weigh red mud and sodium hydroxide and mix them in a certain proportion. Under specific temperature conditions, carry out an alkaline fusion reaction for a period of time. After the alkaline fusion is completed, place the mixture in a graphite crucible and calcine it at a specific calcination temperature for a period of time to further promote the reaction and the conversion of the product.

[0092] S3: The calcined product is placed in a polytetrafluoroethylene water immersion reactor, deionized water is added according to a certain solid-liquid ratio, and the reaction system is stirred and reacted for a period of time under specific temperature conditions. The solid and liquid are separated to obtain filter residue A and filtrate A.

[0093] S4: Analyze filtrate A, adjust the molar ratio of SiO2 / Al2O3 / Na2O in the filtrate, transfer it to an autoclave, and perform hydrothermal crystallization at a specific temperature for a period of time. Filter to obtain filter residue B and filtrate B. Add a certain amount of deionized water to filter residue B and wash it with water according to a certain solid-liquid ratio to remove impurities and unreacted reagents attached to the surface. After washing, filter residue B is dried to obtain pure 4A zeolite product.

[0094] S5: The filter residue A and cathode carbon block are mixed and granulated according to a certain mass ratio, placed in a tube furnace, and reduced and roasted at a specific temperature under a nitrogen atmosphere for a period of time. The volatile fluorine-containing gas generated during the roasting process is alkali-adsorbed through the device. After the roasting product is cooled, the magnetic part is separated by wet magnetic separation to obtain a magnetic concentrate with high iron grade.

[0095] S6: Add deionized water to the non-magnetic residue remaining after magnetic separation and soak it in water at a certain solid-liquid ratio and a specific temperature for a period of time. Filter to obtain filter residue C and fluoride-containing filtrate C. Filter residue C can be used in the construction industry. Mix filtrate B, filtrate C and alkaline adsorption solution, add calcium chloride to adjust the pH to neutral, evaporate and crystallize to precipitate calcium fluoride. Add deionized water to the non-magnetic residue and complete the leaching in filter tank 3. Filter residue C is finally discharged through slag discharge pipe 10. Fluoride-containing filtrate C is filtered through filter tank 3 into storage tank 2. Finally, filtrate B and filtrate C are adjusted and mixed in storage tank 2 and finally discharged through drain pipe 11.

[0096] Throughout the process, an alkali adsorption treatment step was specifically designed for the volatile gases generated during the roasting stage, effectively preventing harmful gases from being emitted into the atmosphere and further improving the environmental performance of the process.

[0097] Most importantly, this process has successfully achieved the efficient recovery of multiple resources such as 4A zeolite, metallic iron, and fluorine, extracting high-value products from traditional solid wastes such as red mud and cathode carbon blocks. This significantly improves the resource utilization rate of solid waste in the aluminum industry and provides strong technical support for the sustainable development of the aluminum industry.

[0098] The process flow of this invention has been carefully designed, with each step logically connected and smoothly integrated. From the pretreatment of raw materials to the subsequent chemical reaction, product separation and waste treatment, every link has been rigorously considered and optimized.

[0099] The entire process is simple to operate, and the equipment and technologies involved are all common and easy to master in the industry. This makes the process highly feasible in practical applications, easy to achieve large-scale industrial production, and has extremely good application prospects and market value.

[0100] Please refer to the reference again. Figures 1 to 10 The working principle of the industrial solid waste treatment and recycling equipment and recycling process provided by this invention is as follows:

[0101] Step S1: Start the feeding motor 51 to control the drive pulley 53 and the screw rod 57 to rotate. The screw rod 57 rotates inside the feeding cylinder 52. During the rotation, the non-magnetic residue conveyed by the feeding pipe 56 is screwed to the outlet position of the feeding cylinder 52 and finally falls into the filter tank 3. The drive pulley 53 rotates to drive the first belt 55 to control the driven pulley 54 to realize the rotation of the rotating rod 62 in the positioning frame 61. When the rotating rod 62 rotates, it controls the eccentric plate 63 to drive the guide wheel 64 to rotate eccentrically. When the guide wheel 64 rotates eccentrically, it is subjected to force to control the trough plate 66 to form an adaptive fan-shaped reciprocating forward and reverse rotation. Therefore, the trough plate 66 can control the driven rod 65 to drive the dispersing plate 67 to reciprocate fan-shaped flipping motion below the outlet end of the feeding cylinder 52. The falling non-magnetic residue will fall on the dispersing plate 67 and be evenly dispersed in the filter tank 3 by the dispersing plate 67.

[0102] Step S2: During the reciprocating forward and reverse rotation, the driven rod 65 can synchronously drive the screw 71 to rotate forward and reverse. When the screw 71 rotates forward and reverse, it can control the reciprocating frame 73 to move horizontally along the positioning rod 72. The horizontal movement of the reciprocating frame 73 is converted by the rotating screw 71. When the reciprocating frame 73 controls the piston 74 to push in the liquid storage tank 75, it can push and squeeze the deionized water in the liquid storage tank 75 to the liquid outlet pipe 78, through the elastic tube 79, and finally through the spray pipe 710 to be injected and sprayed into the filter tank 3.

[0103] Step S3: Start the mixing motor 82 to control the rotation of the first pulley 83 and the mixing frame 84. The mixing frame 84 rotates in the filter tank 3 to mix and leach out the non-magnetic residue and deionized water.

[0104] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An industrial solid waste treatment and recycling device, characterized in that, Includes a heating base, a liquid storage tank, a filter tank, a feeding mechanism, and a dispersing mechanism; The liquid storage tank is located inside the heating base, the filter tank is located inside the liquid storage tank, a top cover is installed on the top of the filter tank, and a positioning seat is fixed on the top of the liquid storage tank and on one side of the filter tank; The feeding mechanism includes a feeding motor installed on the top of the positioning seat, a feeding cylinder is installed through the inside of the filter tank, and two feeding pipes are installed through the top of the feeding cylinder; The dispersing mechanism includes a positioning frame fixed to the side wall of the filter tank, a rotating rod rotatably connected to the positioning frame and inside the filter tank, a driven rod rotatably connected inside the filter tank and above the rotating rod, an eccentric plate and a driven pulley respectively connected by keyways at both ends of the rotating rod, a drive pulley connected by keyways to the output shaft of the feeding motor, a first belt sleeved on the outer walls of the drive pulley and the driven pulley, and a spiral rod connected by keyways inside the feeding cylinder to the drive pulley; The driven rod is fixedly provided with a groove plate and a dispersion plate on its outer wall and inside the filter tank. The eccentric plate is rotatably connected to a guide wheel on its outer wall and inside the groove plate. A slag discharge pipe is installed at the bottom of the filter tank and a liquid discharge pipe is installed at the bottom of the storage tank.

2. The industrial solid waste treatment and recycling equipment according to claim 1, characterized in that, The drive pulley shaft is rotatably connected to the feed cylinder shaft, and the outer wall of the screw rod and the inner wall of the feed cylinder are in contact with each other.

3. The industrial solid waste treatment and recycling equipment according to claim 1, characterized in that, The outer wall of the guide wheel and the inner wall of the trough plate are in close contact with each other, and the dispersing plate is directly below the discharge port of the feeding cylinder.

4. The industrial solid waste treatment and recycling equipment according to claim 1, characterized in that, It also includes auxiliary mechanisms; The auxiliary mechanism includes a liquid storage cylinder installed inside the positioning seat. An outlet pipe and an inlet pipe are respectively installed through the outer wall of the liquid storage cylinder. An inlet check valve is installed inside the inlet pipe. An elastic tube is installed at the outlet end of the outlet pipe inside the filter tank. A spray pipe is installed at the outlet end of the elastic tube. A screw is fixed at the axis of the driven rod and outside the filter tank. A positioning rod is fixed on the outer wall of the filter tank above and below the screw. A reciprocating frame is threadedly connected to the outer wall of the screw. A piston is fixed on the outer wall of the reciprocating frame and coaxially with the liquid storage cylinder. A positioning plate is installed on the side wall of the dispersion plate.

5. The industrial solid waste treatment and recycling equipment according to claim 4, characterized in that, The positioning plate and the nozzle are fixedly installed together, and the elastic tube has a spiral-shaped reset elastic design.

6. The industrial solid waste treatment and recycling equipment according to claim 4, characterized in that, The reciprocating frame slides horizontally about the positioning rod, and the outer wall of the piston and the inner wall of the liquid storage cylinder are in close contact.

7. The industrial solid waste treatment and recycling equipment according to claim 1, characterized in that, It also includes hybrid mechanisms; The mixing mechanism includes a mounting bracket installed on the upper surface of the top cover, a mixing motor mounted on the top of the mounting bracket, a first pulley connected to the output shaft of the mixing motor via a keyway, a mixing frame connected to the keyway at the center of the first pulley and inside the filter tank, a rotating shaft installed inside the storage tank, a second pulley connected to the top of the rotating shaft via a keyway, a second belt sleeved on the outer walls of the first and second pulleys, an auxiliary frame fixed inside the storage tank and below the rotating shaft, and an auxiliary pipe installed through the side of the storage tank.

8. An industrial solid waste treatment and recycling device according to claim 7, characterized in that, The outlet end of the auxiliary pipe is located on one side of the auxiliary frame, and the top of the mixing frame is rotatably connected to the center of the top cover via a bearing.

9. An industrial solid waste treatment and recycling process, characterized in that, The industrial solid waste treatment and recycling process includes an industrial solid waste treatment and recycling device as described in any one of claims 1-8, comprising the following steps: S1: Place the red mud and cathode carbon blocks into a vibrating mill for crushing. The crushed material is then sieved through a standard sieve of a certain mesh size. After sieving, it is dried for a period of time for later use. S2: Weigh red mud and sodium hydroxide and mix them in a certain proportion. Under specific temperature conditions, carry out an alkaline fusion reaction for a period of time. After the alkaline fusion is completed, place the mixture in a graphite crucible and calcine it at a specific calcination temperature for a period of time to further promote the reaction and the conversion of the product. S3: The calcined product is placed in a polytetrafluoroethylene water immersion reactor, deionized water is added according to a certain solid-liquid ratio, and the reaction system is stirred and reacted for a period of time under specific temperature conditions. The solid and liquid are separated to obtain filter residue A and filtrate A. S4: Analyze filtrate A, adjust the molar ratio of SiO2 / Al2O3 / Na2O in the filtrate, transfer it to an autoclave, and perform hydrothermal crystallization at a specific temperature for a period of time. Filter to obtain filter residue B and filtrate B. Add a certain amount of deionized water to filter residue B and wash it with water according to a certain solid-liquid ratio to remove impurities and unreacted reagents attached to the surface. After washing, filter residue B is dried to obtain pure 4A zeolite product. S5: The filter residue A and cathode carbon block are mixed and granulated according to a certain mass ratio, placed in a tube furnace, and reduced and roasted at a specific temperature under a nitrogen atmosphere for a period of time. The volatile fluorine-containing gas generated during the roasting process is alkali-adsorbed through the device. After the roasting product is cooled, the magnetic part is separated by wet magnetic separation to obtain a magnetic concentrate with high iron grade. S6: Add deionized water to the non-magnetic residue remaining after magnetic separation and soak it in water at a certain solid-liquid ratio and a specific temperature for a period of time. Filter to obtain filter residue C and fluoride-containing filtrate C. Filter residue C can be used in the construction industry. Mix filtrate B, filtrate C and alkaline adsorption solution, add calcium chloride to adjust the pH to neutral, evaporate and crystallize to precipitate calcium fluoride. Add deionized water to the non-magnetic residue and complete the leaching in the filter tank. Filter residue C is finally discharged through the slag discharge pipe. Fluoride-containing filtrate C is filtered through the filter tank into the storage tank. Finally, filtrate B and filtrate C are adjusted and mixed in the storage tank and finally discharged through the drain pipe.

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