A safe solidification treatment device for phosphorus iron slag leaching waste residue

Abstract

This invention relates to the field of ferrophosphate slag treatment, and more particularly to a safe solidification treatment device for ferrophosphate slag leaching waste. The device includes a base, a housing connected to the top of the base, a feed pipe connected to the housing, a filter screen inside the housing, a slidably connected extrusion plate to the housing, a guide block connected to the housing near the feed pipe, threaded rods rotatably connected to the housing near the guide block, the threaded rods being threadedly connected to the extrusion plate, a first servo motor connected to the top of the housing near the guide block, the first servo motor being connected to the threaded rods, a push plate slidably connected to the housing, a drive mechanism for moving the push plate between the push plate and the housing, and an opening on the housing away from the feed pipe. This device can quickly extrude and filter ferrophosphate mixtures, significantly improving solid-liquid separation efficiency. Automatic switching between pressure filtration and discharge is achieved through a small motor and gear assembly, with the discharge port opening and closing synchronously with the push, preventing dust leakage and waste slag scattering.

Description

Technical Field

[0001] This invention relates to the field of phosphorus ferrophosphate slag treatment, and more particularly to a safe solidification treatment device for phosphorus ferrophosphate slag leaching waste. Background Technology

[0002] Phosphorus iron slag is a major industrial waste generated during the production of yellow phosphorus, phosphate fertilizer preparation, and recycling of decommissioned lithium iron phosphate batteries. It typically requires acid leaching, alkali leaching, or roasting-leaching processes to extract valuable elements such as phosphorus and iron, achieving resource recovery and utilization. In the phosphorus iron slag leaching process, after being acted upon by leaching agents (acids, alkalis, etc.), effective substances such as phosphorus and iron dissolve in the liquid to form a leachate for subsequent deep processing. The remaining insoluble solids are the phosphorus iron slag leaching waste. This waste still contains residual fluorides, heavy metals, and incompletely leached impurities, classifying it as hazardous waste. Direct dumping, landfilling, or improper disposal can easily lead to leaching leaks, polluting soil, groundwater, and the surrounding ecological environment, posing a serious threat to human health and ecological safety. Therefore, it must undergo safe solidification treatment to meet environmental emission or resource utilization standards.

[0003] Existing treatment technologies mainly employ a segmented process of "leaching-solid-liquid separation-temporary storage-solidification-forming-curing." This involves first separating the leachate from the leaching waste using methods such as plate and frame filter presses and centrifugation. The separated leaching waste is then temporarily stored in a dedicated silo before being transferred to a solidification device. Cement, lime, and other solidifying agents and stabilizers are added and mixed. The mixture is then fed into a forming device to be pressed into blocks. Finally, after curing to safety standards, it undergoes final disposal. However, this segmented treatment process has several insurmountable drawbacks, particularly in the solidification and forming stage of the leaching waste. It cannot achieve continuous processing where "the leaching waste is immediately compressed into blocks and pushed out after the useful substances in the phosphorus-iron slag are leached." Specific shortcomings are as follows: The existing treatment equipment has an independent and disconnected leaching system and solidification molding system, lacking an efficient connection structure between the two. After the phosphorus iron slag completes leaching and solid-liquid separation, the leached waste residue needs to be temporarily stored and then transferred to the solidification molding equipment manually or by additional conveying equipment. The whole process has obvious time intervals and process breaks, making it impossible to achieve immediate solidification molding of the leached waste residue.

[0004] Therefore, it is necessary to develop a safe solidification treatment device for phosphorus iron slag leaching waste that can immediately compress the leached waste into blocks and push it out after the useful substances in the phosphorus iron slag are leached out. Summary of the Invention

[0005] The technical implementation of the present invention is as follows: a safe solidification treatment device for phosphorus iron slag leaching waste includes a base, a box connected to the top of the base, a feed pipe connected to the box, a filter screen installed inside the box, an extrusion plate slidably connected to the box, a guide block connected to the side of the box near the feed pipe, threaded rods rotatably connected to the side of the box near the guide block, the threaded rods and the extrusion plate being threadedly connected, a first servo motor connected to the top of the box near the guide block, the first servo motor and the threaded rods being connected, an ejector plate slidably connected to the box, a drive mechanism for driving the ejector plate to move is provided between the ejector plate and the box, an opening is opened on the side of the box away from the feed pipe, a baffle plate is slidably connected to the box near the opening, and a discharge port is opened on the baffle plate.

[0006] As a further preferred embodiment, the drive mechanism includes a twisted shaft, which is slidably connected to the side of the housing near the feed pipe. The twisted shaft and the ejector plate are fixedly connected. A nut block is rotatably connected to the side of the housing near the twisted shaft. The nut block and the twisted shaft are threadedly connected. A small motor is installed on the side of the housing near the nut block. A gear assembly is provided between the output shaft of the small motor and the outside of the nut block. As a further preferred embodiment, the gear assembly consists of two gears, which are respectively mounted on the output shaft of the small motor and the outside of the nut block, and the two gears mesh.

[0007] As a further preferred embodiment, it also includes a column connected to a baffle plate, an extrusion frame slidably connected to the outside of the box, the extrusion frame and the twisted shaft are extruded together, the extrusion frame has a slanted groove and a straight groove on the side near the column, the slanted groove and the straight groove are slidably connected to the column respectively, and a first spring connects the extrusion frame and the box.

[0008] As a further preferred embodiment, it also includes a lifting frame, which is slidably connected to the housing. A rodless cylinder is connected to the top of the housing near the threaded rod. The rodless cylinder and the lifting frame are slidably connected. The lifting frame is equipped with a second servo motor. The bottom of the output shaft of the second servo motor is connected to a stirring rod. A liquid storage tank is connected to the top center of the lifting frame. The bottom of the liquid storage tank is connected to symmetrically arranged liquid outlet pipes. Hollow shells are fixedly connected between the liquid outlet pipes. The hollow shells are rotatably connected to the stirring rod. The stirring rod has a hollow internal structure. Multiple equally spaced square grooves are opened along the circumference of the upper part of the stirring rod. The square grooves are connected to the hollow shell.

[0009] As a further preferred option, multiple liquid outlets are provided on the stirring rod.

[0010] As a further preferred embodiment, it also includes a sliding rod that is slidably connected to the extrusion plate. A conical block is connected between the bottom of the sliding rod, and the conical block and the bottom of the stirring rod are pressed together. A circular groove is opened in the middle of the extrusion plate, and the circular groove and the conical block are fitted together. A rubber ring is provided on the plug.

[0011] As a further preferred option, it also includes a movable frame that is slidably connected to the housing. The top of the movable frame is connected to multiple equally spaced plugs that engage with the mesh openings on the filter screen.

[0012] As a further preferred embodiment, it also includes a first rack that is slidably connected to the movable frame, a third spring connecting the first rack and the movable frame, a symmetrically arranged full gear that is rotatably connected to the housing, the full gear meshing with the first rack, and a second rack connected to the bottom of the lifting frame, the second rack meshing with the full gear.

[0013] As a further preferred option, a drain pipe is also included, which is located at the bottom of the enclosure.

[0014] The beneficial effects of this invention are as follows: 1. This device can quickly squeeze and filter phosphorus-iron mixture, significantly improving solid-liquid separation efficiency. It achieves automatic switching between pressure filtration and discharge through a small motor and gear assembly. The discharge port opens and closes synchronously with the material push, avoiding dust leakage and waste residue scattering.

[0015] 2. This device can accurately add curing agent and simultaneously stir and mix it, so that the curing agent and phosphorus iron slag come into more uniform contact and the curing effect is more complete. The stirring and discharge are linked and sealed, which can effectively prevent liquid leakage during pressure filtration. The overall structure is compact, the operation is smooth, and the degree of automation is high. It not only improves the quality of waste residue solidification and molding, but also reduces the waste of agents and the risk of leakage. It is safe, environmentally friendly and has higher processing efficiency.

[0016] 3. This device can automatically seal the filter screen during solidification and mixing to prevent the solidifying agent from leaking out before it reacts, thus greatly reducing agent waste. The sealing and filtration are switched synchronously through gear and rack linkage, requiring no additional power. The operation is reliable and coordinated, ensuring that the phosphorus iron slag is fully solidified and formed without affecting the subsequent normal filtration and drainage, thereby improving the treatment effect and economy. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a partial three-dimensional structural cross-sectional view of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the components of the present invention, including the liquid storage tank, the liquid outlet pipe, and the hollow shell.

[0020] Figure 4 This is a three-dimensional structural diagram of the components of the present invention, including the movable frame, the plug, and the first rack.

[0021] The markings in the diagram are as follows: 1: Base, 2: Box body, 201: Drain pipe, 3: Feed pipe, 4: Filter screen, 5: Extrusion plate, 501: Guide block, 6: First servo motor, 7: Threaded rod, 8: Push plate, 9: Twisted shaft, 10: Nut block, 11: Gear assembly, 12: Small motor, 13: Baffle plate, 14: Discharge port, 15: Column, 16: Extrusion frame, 17: First spring, 171: Lifting frame, 172: Rodless cylinder, 18: Stirring rod, 19: Second servo motor, 20: Liquid storage tank, 21: Liquid outlet pipe, 210: Hollow shell, 22: Square groove, 23: Conical block, 24: Sliding rod, 25: Second spring, 26: Moving frame, 27: Plug, 271: Rubber ring, 28: First rack, 29: Full gear, 30: Second rack, 31: Third spring. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0023] A safe solidification treatment device for phosphorus-iron slag leaching waste, such as Figures 1-2 As shown, the device includes a base 1, a housing 2 fixedly connected to the top of the base 1, a drain pipe 201 at the bottom of the housing 2, a feed pipe 3 connected to the upper left of the housing 2, a filter screen 4 in the middle of the housing 2, a slidably connected extrusion plate 5 to the upper part of the housing 2, guide blocks 501 fixedly connected to the front and rear sides of the upper part of the filter screen 4, threaded rods 7 rotatably connected to the front and rear sides of the top of the housing 2, the threaded rods 7 and the extrusion plate 5 being threadedly connected, a first servo motor 6 connected to the front and rear sides of the top of the housing 2, the first servo motor 6 being connected to the threaded rods 7, and an ejector plate 8 slidably connected inside the housing 2. A drive mechanism for moving the ejector plate 8 is provided between the ejector plate 8 and the housing 2. The upper right part of the box body 2 has an opening, and a baffle plate 13 is slidably connected to the box body 2 near the opening. A discharge port 14 is opened at the lower part of the baffle plate 13. The drive mechanism includes a twisted shaft 9, which is slidably connected to the left side of the box body 2. The right end of the twisted shaft 9 is fixedly connected to the push plate 8. A nut block 10 is rotatably connected to the left side of the box body 2. The nut block 10 and the twisted shaft 9 are threadedly connected. A small motor 12 is set on the outside of the left side of the box body 2. A gear assembly 11 is set between the output shaft of the small motor 12 and the outside of the nut block 10. The gear assembly 11 consists of two gears, which are respectively set on the output shaft of the small motor 12 and the outside of the nut block 10. The two gears are meshed.

[0024] like Figures 1-2 As shown, it also includes a column 15, which is fixedly connected to the front and rear sides of the baffle plate 13. The box 2 is slidably connected to the outside of the extrusion frame 16. The left side of the extrusion frame 16 is extruded and fitted with the left end of the twist shaft 9. The right side of the extrusion frame 16 has a slanted groove and a straight groove on both the front and rear sides. The straight groove is located on the left side of the slanted groove. The slanted groove and the straight groove are slidably connected to the column 15 respectively. The right side of the extrusion frame 16 is connected to the box 2 between the front and rear sides of the right side and the box 2. A first spring 17 is connected between the extrusion frame 16 and the box 2.

[0025] When using this safe solidification treatment device for ferrophosphate slag leaching waste, the ferrophosphate mixture is first injected into the tank 2 through the feed pipe 3. The mixture passes through the filter screen 4, where the ferrophosphate slag remains at the top, while the liquid sinks to the bottom of the tank 2. To accelerate the downward flow of the liquid, the first servo motor 6 is activated. The output shaft of the first servo motor 6 drives the threaded rod 7 to rotate, which in turn moves the extrusion plate 5 downwards. This downward movement of the extrusion plate 5 forces the liquid downwards, accelerating the filtration process. After the liquid has drained downwards, the output shaft of the first servo motor 6 reverses, causing the threaded rod 7 to reverse as well. This reverse rotation of the threaded rod 7 then causes the extrusion plate 5 to rise and reset. Afterwards, the small motor 12 is activated, causing the gear assembly 11 to rotate the nut block 10. The rotation of the nut block 10 moves the twisted shaft 9 to the right, which in turn moves the ejector plate 8 to the right. When the ejector plate 8 moves to the right, it pushes the waste residue to the right. When the twisted shaft 9 moves to the right, it pushes the extrusion frame 16 to the right via the first spring 17. The extrusion frame 16 drives the inclined groove and the straight groove to the right. Under the action of the inclined groove, it pushes the column 15 to move upward. The column 15 drives the baffle plate 13 to move upward. The upward movement of the baffle plate 13 will move the discharge port 14 to the open position. At this time, the opening is open. Then, the ejector plate continues to move to the right, which will push the clump of waste residue to the right. At this time, the first spring 17 is compressed. When the nut block 10 continues to rotate, it will drive the twisted shaft 9 to move to the left to reset. The twisted shaft 9 drives the ejector plate 8 to move to the left to reset. The twisted shaft 9 drives the first spring 17 and the extrusion frame 16 to move to the left to reset. The extrusion frame 16 then drives the column 15 and the baffle plate 13 to move downward to reset. Then, the small motor 12 can be turned off. The liquid can be discharged through the drain pipe 201.

[0026] like Figures 1-3As shown, it also includes a lifting frame 171, which is slidably connected to the upper part of the box 2. Rodless cylinders 172 are connected to the front and rear sides of the top of the box 2. The rodless cylinders 172 and the lifting frame 171 are slidably connected. A second servo motor 19 is provided in the middle of the lifting frame 171. A stirring rod 18 is fixedly connected to the bottom of the output shaft of the second servo motor 19. A liquid storage tank 20 is connected to the middle of the top of the lifting frame 171. A liquid outlet pipe 21 is connected to the left and right sides of the bottom of the liquid storage tank 20. A hollow shell 210 is fixedly connected between the liquid outlet pipes 21. The hollow shell 210 and the stirring rod 18 are rotatably connected. The stirring rod 18 has a hollow internal structure. Multiple equally spaced square grooves 22 are opened on the upper part of the stirring rod 18 along the circumferential direction. The square grooves 22 are connected to the hollow shell 210. Multiple liquid outlets are opened on the stirring rod 18.

[0027] like Figure 2 As shown, it also includes a sliding rod 24, which is symmetrically arranged and slidably connected to the extrusion plate 5. A conical block 23 is fixedly connected between the bottoms of the sliding rods 24. The conical block 23 and the bottom of the stirring rod 18 are squeezed together. A circular groove is opened in the middle of the extrusion plate 5. The circular groove and the conical block 23 are fitted together. The conical block 23 is used to block the circular groove.

[0028] To solidify ferrophosphate slag, a curing agent is usually added to it for solidification treatment. The following methods are adopted for this purpose: After pre-filling the storage tank 20 with curing agent, and then filtering out the phosphorus slag, the lifting frame 171 can be lowered by controlling the rodless cylinder 172. The lowering of the lifting frame 171 drives the second servo motor 19, the stirring rod 18, the storage tank 20, and the outlet pipe 21 to descend. When the stirring rod 18 contacts the top of the conical block 23, it will push the conical block 23 to move downward. The conical block 23 drives the sliding rod 24 to move downward, and the second spring 25 is compressed. After the stirring rod 18 enters the box 2, the second servo motor 19 can be turned on. The second servo motor 19 drives the stirring rod 18 to rotate. When the square groove 22 on the stirring rod 18 is connected to the hollow shell 210, the curing agent will enter the stirring rod 18 through the square groove 22 and be discharged through the outlet on the stirring rod 18. When the square groove 22 and the hollow shell 210 are not connected, the curing agent stops flowing out, enabling intermittent discharge. Moreover, the rotation of the stirring rod 18 can evenly mix the curing agent in the ferrophosphate slag, ensuring that the ferrophosphate slag and the curing agent are fully mixed together, thus achieving more thorough curing. After the stirring is completed, the second servo motor 19 is turned off, and the lifting frame 171 can be moved upward and reset by the rodless cylinder 172. The lifting frame 171 drives the second servo motor 19, the stirring rod 18, the liquid storage tank 20, and the liquid outlet pipe 21 to move upward and reset. When the stirring rod 18 and the conical block 23 are separated, the second spring 25 drives the conical block 23 to move upward and reset. The conical block 23 can re-block the circular groove, thus preventing the liquid from flowing out of the circular groove when the extrusion plate 5 descends to extrude liquid.

[0029] like Figure 4 As shown, it also includes a movable frame 26, which is slidably connected inside the housing 2. Two plugs 27 are fixedly connected to the top of the movable frame 26, and each plug 27 is provided with a rubber ring 271. The plugs 27 and the mesh openings on the filter screen 4 are engaged. The front and rear sides of the movable frame 26 are slidably connected to a first rack 28. A third spring 31 is connected between the first rack 28 and the movable frame 26. The front and rear sides of the housing 2 are rotatably connected to a full gear 29, which meshes with the first rack 28. The bottom front and rear sides of the lifting frame 171 are connected to a second rack 30, which meshes with the full gear 29.

[0030] Because filter screen 4 has mesh openings, when adding the curing agent, some of the curing agent may flow down into the lower part of box 2 before it has cured the phosphate slag, resulting in waste of the curing agent. Therefore, this embodiment provides the following solution: When the lifting frame 171 descends, it drives the second rack 30 to move downwards. The downward movement of the second rack 30 drives the full gear 29 to rotate. The full gear 29 drives the first rack 28 to move upwards. The upward movement of the first rack 28 drives the moving frame 26 to move upwards via the third spring 31. The upward movement of the moving frame 26 drives the plug 27 to move upwards. After the plug 27 moves downwards to block the mesh opening, the plug 27 and the moving frame 26 stop moving. The first rack 28 continues to move upwards, and the third spring 31 is compressed. After curing, the upward movement of the lifting frame 171 drives the second rack 30 to move upwards. The upward movement of the second rack 30 drives the first rack 28, the third spring 31, the moving frame 26, and the plug 27 to move downwards to reset, and the mesh opening is opened.

[0031] Mixing and curing steps: First, the first servo motor 6 is turned on, and the lifting frame 171 is driven to descend through the threaded rod 7. With the cooperation of the second rack 30, the first rack 28, the full gear 29 and other components, the moving frame 26, the plug 27 and the rubber ring 271 move up to block the mesh opening. At this time, two cavities are formed inside the box 2, and the stirring rod 18 has not yet entered the box 2. Next, the lifting frame 171 and the stirring rod 18 continue to descend. After the stirring rod 18 descends and contacts the cone block 23, it will also descend against the cone block 23. The stirring rod 18 will then slowly enter the upper cavity. After the stirring rod 18 is fully inserted into the upper cavity, the phosphorus-iron mixture can be injected into the upper cavity through the feed pipe 3. After the injection is completed, the second servo motor 19 can be turned on, and the stirring rod 18 will start to rotate. Two square grooves 22 are opened on the top of the stirring rod 18. Each time the stirring rod 18 rotates 15°, the square grooves 22 will be connected to the liquid outlet pipe 21. During the process of the stirring rod 18 continuing to rotate 165°, the square grooves 22 will always remain connected to the liquid outlet pipe 21. During this process, the curing agent will continue to flow into the stirring rod 18 and will be continuously added. As the stirring rod 18 rotates, it will be thrown out and fully mixed with the phosphorus-iron mixture.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A safe solidification treatment device for phosphorus iron slag leaching waste, comprising a base (1), a box (2) connected to the top of the base (1), a feed pipe (3) connected to the box (2), and a filter screen (4) installed inside the box (2), characterized in that: The box (2) is slidably connected to the extrusion plate (5). Inside the box (2) near the feed pipe (3) is a guide block (501). Inside the box (2) near the guide block (501) are rotatably connected threaded rods (7). The threaded rods (7) and the extrusion plate (5) are threadedly connected. The top of the box (2) near the guide block (501) is connected to the first servo motor (6). The first servo motor (6) and the threaded rod (7) are connected. Inside the box (2) is a slidingly connected ejector plate (8). Between the ejector plate (8) and the box (2) is a drive mechanism for driving the ejector plate (8) to move. The box (2) has an opening on the side away from the feed pipe (3). The box (2) is slidably connected to the opening with a baffle plate (13). The baffle plate (13) has a discharge port (14).

2. The safe solidification treatment device for phosphorus-iron slag leaching waste as described in claim 1, characterized in that: The drive mechanism includes a twisted shaft (9), which is slidably connected to the side of the housing (2) near the feed pipe (3). The twisted shaft (9) and the ejector plate (8) are fixedly connected. A nut block (10) is rotatably connected to the side of the housing (2) near the twisted shaft (9). The nut block (10) and the twisted shaft (9) are threadedly connected. A small motor (12) is provided on the side of the housing (2) near the nut block (10). A gear assembly (11) is provided between the output shaft of the small motor (12) and the outside of the nut block (10). The safe solidification treatment device for phosphorus iron slag leaching waste as described in claim 2 is characterized in that: the gear assembly (11) consists of two gears, which are respectively set on the output shaft of the small motor (12) and the outside of the nut block (10), and the two gears mesh.

3. The safe solidification treatment device for phosphorus-iron slag leaching waste as described in claim 3, characterized in that: It also includes a column (15), which is connected to the baffle plate (13). The box (2) is slidably connected to the outside of the extrusion frame (16). The extrusion frame (16) and the twisted shaft (9) are extruded together. The extrusion frame (16) has a slanted groove and a straight groove on the side near the column (15). The slanted groove and the straight groove are slidably connected to the column (15) respectively. A first spring (17) is connected between the extrusion frame (16) and the box (2).

4. The safe solidification treatment device for phosphorus-iron slag leaching waste as described in claim 4, characterized in that: It also includes a lifting frame (171), which is slidably connected to the box (2). A rodless cylinder (172) is connected to the top of the box (2) near the threaded rod (7). The rodless cylinder (172) and the lifting frame (171) are slidably connected. The lifting frame (171) is equipped with a second servo motor (19). The bottom of the output shaft of the second servo motor (19) is connected to a stirring rod (18). A liquid storage tank (20) is connected to the top middle of the lifting frame (171). The bottom of the liquid storage tank (20) is connected to symmetrically arranged liquid outlet pipes (21). Hollow shells (210) are fixedly connected between the liquid outlet pipes (21). The hollow shells (210) and the stirring rods (18) are rotatably connected. The stirring rods (18) have a hollow internal structure. Multiple equally spaced square grooves (22) are opened on the upper part of the stirring rods (18) along the circumferential direction. The square grooves (22) are connected to the hollow shells (210).

5. The safe solidification treatment device for phosphorus-iron slag leaching waste as described in claim 5, characterized in that: Multiple liquid outlets are provided on the stirring rod (18).

6. The safe solidification treatment device for phosphorus-iron slag leaching waste as described in claim 6, characterized in that: It also includes a sliding rod (24), which is slidably connected to the extrusion plate (5). A conical block (23) is connected between the bottom of the sliding rod (24). The conical block (23) and the bottom of the stirring rod (18) are squeezed together. A circular groove is opened in the middle of the extrusion plate (5), and the circular groove and the conical block (23) are engaged.

7. The safe solidification treatment device for phosphorus-iron slag leaching waste as described in claim 7, characterized in that: It also includes a movable frame (26), which is slidably connected inside the box (2). The top of the movable frame (26) is connected to multiple equally spaced plugs (27), which are snapped together with the mesh openings on the filter screen (4). A rubber ring (271) is provided on the plug (27).

8. The safe solidification treatment device for phosphorus-iron slag leaching waste as described in claim 8, characterized in that: It also includes a first rack (28), which is slidably connected to the movable frame (26). A third spring (31) is connected between the first rack (28) and the movable frame (26). The housing (2) is rotatably connected to a symmetrically arranged full gear (29), which meshes with the first rack (28). A second rack (30) is connected to the bottom of the lifting frame (171), which meshes with the full gear (29).

9. The safe solidification treatment device for phosphorus-iron slag leaching waste as described in claim 9, characterized in that: It also includes a drain pipe (201), which is located at the bottom of the box (2).

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