Filtering equipment for leaching rare earths

Abstract

The utility model discloses a filter equipment is used to rare earth leaching relates to filter equipment technical field, the utility model discloses a bottom plate still includes: the stirring part is set at the top of bottom plate, the configuration part is set at the top of bottom plate, the stirring part includes stirring subassembly, stirring subassembly installs at the top of bottom plate, transmission assembly, transmission assembly installs on stirring subassembly, heating assembly, heating assembly installs on stirring subassembly, the stirring subassembly includes the leaching jar of fixed connection at the top of bottom plate, the top fixed connection of leaching jar has the feeding pipe. The utility model discloses the stirring part is set with, has solved the device in the stirring operation of ore powder and leaching agent to the current device, owing to the single of stirring mode, will lead to the difficulty of full mixing of both, this defect not only will influence the processing effect of subsequent process, still can cause the problem of low leaching efficiency, resource waste and other bad consequences.

Description

Technical Field

[0001] This utility model belongs to the field of filtration equipment technology, and in particular relates to a filtration device for rare earth leaching. Background Technology

[0002] Filtration equipment for rare earth leaching is a specialized device used in rare earth extraction processes to separate solid rare earth minerals from the leachate in the leaching slurry. Its core function is to filter out solid particles in the slurry through a filter medium, thereby purifying and enriching the leachate and providing qualified raw materials for subsequent extraction, precipitation, and other purification processes. It needs to be adapted to the corrosiveness, slurry concentration, and particle characteristics of the rare earth leaching system. Common types include plate and frame filter presses, chamber filters, and ceramic membrane filters, which feature high separation efficiency, high filtrate recovery rate, and resistance to acid and alkali corrosion.

[0003] However, in the operation of existing equipment, the mixing method of mineral powder and leaching agent is too simple, which makes it difficult to achieve sufficient mixing between the two. This defect not only affects the processing effect of subsequent processes, but also causes adverse consequences such as low leaching efficiency and waste of resources. Utility Model Content

[0004] The purpose of this utility model is to provide a filtration device for rare earth leaching. By setting up a stirring unit, it solves the problem that in the existing device, the stirring method is too simple, which makes it difficult to achieve sufficient mixing between the mineral powder and the leaching agent. This defect not only affects the processing effect of subsequent processes, but also causes adverse consequences such as low leaching efficiency and waste of resources.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a filtration device for rare earth leaching, comprising a base plate and further comprising: a stirring section disposed on the top of the base plate; a configuration section disposed on the top of the base plate; the stirring section comprising a stirring assembly mounted on the top of the base plate; a transmission assembly mounted on the stirring assembly; and a heating assembly mounted on the stirring assembly; the stirring assembly comprising a leaching tank fixedly connected to the top of the base plate, a feeding pipe fixedly connected to the top of the leaching tank, a motor disposed on the top of the leaching tank, the output shaft of the motor being fixedly connected to a rotating shaft via a coupling, the rotating shaft passing through the leaching tank and rotatably connected to the leaching tank, a main stirring blade fixedly connected to the outer wall of the rotating shaft, a large gear fixedly connected to the outer wall of the rotating shaft, a fixing member disposed on the top of the leaching tank, the feeding pipe communicating with the leaching tank, and the fixing member comprising a motor sleeve fixedly connected to the top of the leaching tank, the inner wall of the motor sleeve being fixedly connected to the motor.

[0006] Furthermore, the configuration unit includes a sewage discharge assembly disposed on the leaching tank; and a filter assembly installed on the right side of the leaching tank.

[0007] Furthermore, the transmission assembly includes a plurality of rotating shafts rotatably connected to the leaching tank, each of the rotating shafts having an auxiliary stirring blade fixedly connected to its outer wall, each of the rotating shafts having a pinion fixedly connected to its top outer wall, each of the pinions meshing with a large gear, and each of the rotating shafts extending to the outside of the leaching tank.

[0008] Furthermore, the heating assembly includes a heating chamber formed on the leaching tank, an inlet pipe is fixedly connected to the outer wall of the leaching tank, a temperature sensor is provided on the top of the leaching tank, and the inlet pipe is connected to the heating chamber.

[0009] Furthermore, the sewage discharge assembly includes a sewage discharge pipe fixedly connected to the bottom of the leaching tank, a valve stem rotatably connected to the sewage discharge pipe, the front and rear ends of the valve stem extending outside the sewage discharge pipe, a valve core fixedly connected to the outer wall of the valve stem, a manual turntable fixedly connected to the front end of the valve stem, and the valve core being adapted to the sewage discharge pipe.

[0010] Furthermore, the filtration assembly includes a feed pump disposed on the outer wall of the leaching tank, a conveying pipe fixedly connected to the right end of the feed pump, a filter press disposed on the top of the bottom plate, the right end of the conveying pipe being fixedly connected to the filter press, and the feed pump being located on the right side of the leaching tank.

[0011] This utility model has the following beneficial effects: 1. By setting up a stirring unit, when in use, rare earth mineral powder and leaching agent are injected into the leaching tank according to a preset ratio. Then, hot water is introduced into the heating chamber above the leaching tank through the water inlet pipe. Combined with the real-time monitoring data of the temperature sensor, the stirring temperature of the slurry is adjusted. Then, after the motor is started, it will drive the main stirring blade to initially stir the slurry through the rotating shaft. At the same time, the large gear on the rotating shaft meshes with the small gears at the ends of multiple rotating shafts, so that multiple auxiliary stirring blades can rotate synchronously around the main stirring blade. This composite stirring structure realizes multi-dimensional and efficient stirring of the slurry, significantly improving the mixing uniformity of rare earth mineral powder and leaching agent. 2. After the slurry is stirred, it is allowed to stand in the leaching tank for a preset time. After standing, the manual turntable of the bottom drain pipe is rotated to open the drain pipe through the valve stem, allowing a small amount of large particles of impurities to settle in the tank. Then, the valve is closed, and the filter press is started to pressurize. The feed pump is then turned on to transport the slurry to the filter press through the conveying pipe. During the process, the state of the filtrate is observed in real time: if the filtrate is turbid, the feed is stopped and 0.2% to 0.3% diatomaceous earth filter aid is added to the system. The feed is then resumed and the filtration continues. When there is no obvious outflow of filtrate, the feed pump is turned off, and the flushing valve is opened to flush the filter cake with clean water for 10 to 15 minutes. After flushing, the filter press is depressurized, and the filter cake falls off automatically. The leaching residue and filtrate are collected separately. The filtrate is transferred to the subsequent purification process. Finally, the filter cloth of the filter press and the leaching tank are flushed with clean water, and all power and valves are turned off.

[0012] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional view of the stirring section of this utility model; Figure 3 This is a partial cross-sectional view of the configuration part of this utility model; Figure 4 This utility model Figure 2 A magnified structural diagram of A in the middle; Figure 5 This utility model Figure 2 A magnified structural diagram of B in the diagram; Figure 6 This utility model Figure 3 A magnified structural diagram of C.

[0015] The attached diagram lists the components represented by each number as follows: 1. Base plate; 2. Mixing section; 21. Mixing assembly; 211. Leaching tank; 212. Feeding pipe; 213. Motor sleeve; 214. Motor; 215. Shaft 1; 216. Main mixing blade; 217. Large gear; 22. Transmission assembly; 221. Shaft 2; 222. Auxiliary mixing blade; 223. Small gear; 23. Heating assembly; 231. Heating chamber; 232. Water inlet pipe; 233. Temperature sensor; 3. Configuration section; 31. Sewage discharge assembly; 311. Sewage discharge pipe; 312. Valve stem; 313. Valve core; 314. Manual turntable; 32. Filter assembly; 321. Feed pump; 322. Conveying pipe; 323. Filter press. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-6 As shown, this utility model is a filtration device for rare earth leaching, including a base plate 1, and further including: a stirring part 2, which is disposed on the top of the base plate 1; and a configuration part 3, which is disposed on the top of the base plate 1.

[0018] The stirring unit 2 includes a stirring assembly 21, which is mounted on the top of the base plate 1; a transmission assembly 22, which is mounted on the stirring assembly 21; and a heating assembly 23, which is mounted on the stirring assembly 21. The stirring assembly 21 includes a leaching tank 211 fixedly connected to the top of the base plate 1. A feeding pipe 212 is fixedly connected to the top of the leaching tank 211. A motor 214 is installed on the top of the leaching tank 211. The output shaft of the motor 214 is fixedly connected to a rotating shaft 215 via a coupling. The rotating shaft 215 passes through the leaching tank 211 and is rotatably connected to the leaching tank 211. The outer wall of the rotating shaft 215... A main stirring blade 216 is fixedly connected to the leaching tank 211. A large gear 217 is fixedly connected to the outer wall of the rotating shaft 215. A fixing member is provided on the top of the leaching tank 211. The feeding pipe 212 communicates with the leaching tank 211. The transmission assembly 22 includes several rotating shafts 221 rotatably connected to the leaching tank 211. Auxiliary stirring blades 222 are fixedly connected to the outer wall of each of the rotating shafts 221. Small gears 223 are fixedly connected to the outer wall of the top of each of the rotating shafts 221. Each of the small gears 223 meshes with the large gear 217. The tops of each of the rotating shafts 221 extend outside the leaching tank 211. The heating assembly 23 includes an opening... A heating chamber 231 is installed on the leaching tank 211. A water inlet pipe 232 is fixedly connected to the outer wall of the leaching tank 211. A temperature sensor 233 is installed on the top of the leaching tank 211. The water inlet pipe 232 communicates with the heating chamber 231. The fixing components include a motor sleeve 213 fixedly connected to the top of the leaching tank 211. The inner wall of the motor sleeve 213 is fixedly connected to a motor 214. By setting a stirring unit 2, rare earth mineral powder and leaching agent can be injected into the leaching tank 211 in sequence according to a preset ratio during use. Then, hot water is introduced into the heating chamber 231 above the leaching tank 211 through the water inlet pipe 232, combined with the temperature sensor 233. Real-time monitoring data is used to regulate the stirring temperature of the slurry in the leaching tank 211. Then, the motor 214 is started. The motor 214 drives the main stirring blade 216 to perform preliminary stirring of the slurry through the rotating shaft 215. At the same time, when the rotating shaft 215 rotates, it also drives the large gear 217 on it, which meshes with the small gears 223 at the ends of multiple rotating shafts 221. This allows each rotating shaft 221 to drive the corresponding auxiliary stirring blade 222 to rotate synchronously around the main stirring blade 216. Through this composite stirring structure design, multi-dimensional and efficient stirring of the slurry can be achieved, which greatly improves the mixing uniformity of rare earth mineral powder and leaching agent.

[0019] Configuration unit 3 includes a drain assembly 31, which is mounted on the leaching tank 211; and a filter assembly 32, which is mounted on the right side of the leaching tank 211. The drain assembly 31 includes a drain pipe 311 fixedly connected to the bottom of the leaching tank 211, and a valve stem 312 rotatably connected to the drain pipe 311. The front and rear ends of the valve stem 312 extend outside the drain pipe 311, and a valve core 313 is fixedly connected to the outer wall of the valve stem 312. A manual turntable 314 is fixedly connected to the end of the filter assembly 32. The valve core 313 is adapted to the drain pipe 311. The filter assembly 32 includes a feed pump 321 installed on the outer wall of the leaching tank 211. A conveying pipe 322 is fixedly connected to the right end of the feed pump 321. A filter press 323 is installed on the top of the bottom plate 1. The right end of the conveying pipe 322 is fixedly connected to the filter press 323. The feed pump 321 is located on the right side of the leaching tank 211. After the slurry is stirred, the filter assembly 321 is installed. After the slurry in the leaching tank 211 has been allowed to stand for a preset time, the manual turntable 314 on the drain pipe 311 at the bottom of the leaching tank is rotated. This drives the valve core 313 through the valve stem 312 to open the drain pipe and discharge a small amount of large particles of impurities that have settled in the tank. Then, the valve is closed, and the filter press 323 is started to complete the pressurization operation. Then, the feed pump 321 is started, and the slurry in the leaching tank 211 is transported to the filter press 323 through the conveying pipe 322. During the process, the state of the filtrate is observed: if the filtrate is turbid, the feed is stopped, and 0.2% to 0.3% diatomaceous earth filter aid is added to the system. Then, the feed is resumed. When there is no obvious outflow of filtrate, the feed pump is turned off, the flushing valve is opened, and the filter cake is flushed with clean water for 10 to 15 minutes. After flushing, the filter press is depressurized, and the filter cake falls off automatically. The leaching residue and filtrate are collected separately. The filtrate is transferred to the subsequent purification process. Finally, the filter cloth of the filter press and the leaching tank are flushed with clean water, and all power and valves are turned off.

[0020] Temperature sensor 233: A PT100 platinum resistance temperature sensor, such as model WZP-230, or a K-type thermocouple temperature sensor, such as model WRN-130, can be selected. The core working principle is as follows: the sensor probe is directly inserted into the mixture or reaction system. The PT100 uses the linear characteristic of the resistance value of platinum resistance changing with temperature. Within the range of -200℃ to 650℃, the resistance value is precisely proportional to the temperature. The K-type thermocouple generates thermoelectric potential under the action of temperature difference through a circuit composed of two different metal conductors. The real-time temperature signal during the mixing process is converted into an electrical signal and transmitted to the control system through the transmitter. This enables real-time monitoring and precise control of the mixing reaction temperature of mineral powder and leaching agent, ensuring leaching efficiency and rare earth recovery rate.

[0021] Filter press 323: Common models include XMYZ120 / 1250-UB automatic plate filter press and XAZG200 / 1500-U diaphragm filter press. Their working principle is as follows: The slurry after leaching rare earth mineral powder is injected into the filter plate chamber of the filter press via a feed pump. A hydraulic system applies high pressure (typically 0.6-1.6 MPa) to tightly close the filter plates, forming a sealed filtration space. Under pressure difference, the liquid leachate in the slurry permeates through the filter cloth and is discharged. Rare earth ions are collected and recovered with the leachate, while the slag is trapped between the filter plates by the filter cloth. After filtration, the filter plates are loosened by the hydraulic system, and the filter residue automatically falls off or is manually cleaned, achieving efficient separation of the leachate and slag, ensuring efficient rare earth resource recovery and smooth subsequent processes.

[0022] It should be noted that the control of motor 214, temperature sensor 233 and filter press 323 in this application can all be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be achieved using existing technologies, such as PLC.

[0023] One specific application of this embodiment is as follows: During use, rare earth mineral powder and leaching agent are sequentially injected into the leaching tank 211 according to a preset ratio. Then, hot water is introduced into the heating chamber 231 above the leaching tank 211 through the water inlet pipe 232. Combined with real-time monitoring data from the temperature sensor 233, the stirring temperature of the slurry in the leaching tank 211 is adjusted. Next, the motor 214 is started. The motor 214 drives the main stirring blade 216 to initially stir the slurry through the rotating shaft 215. Simultaneously, as the rotating shaft 215 rotates, it also drives the large gear 217 on it, which meshes with the small gears 223 at the ends of multiple rotating shafts 221. This allows each rotating shaft 221 to drive its corresponding auxiliary stirring blade 222 to rotate synchronously around the main stirring blade 216. Through this composite stirring structure design, multi-dimensional and efficient stirring of the slurry can be achieved, significantly improving the mixing uniformity of the rare earth mineral powder and leaching agent. After the slurry stirring is completed... After the slurry in the leaching tank 211 has been allowed to stand for a preset time, the manual turntable 314 on the drain pipe 311 at the bottom of the leaching tank is rotated. This drives the valve core 313 through the valve stem 312 to open the drain pipe and discharge a small amount of large particles of impurities that have settled in the tank. Then, the valve is closed, and the filter press 323 is started to complete the pressurization operation. Then, the feed pump 321 is started, and the slurry in the leaching tank 211 is transported to the filter press 323 through the conveying pipe 322. During the process, the state of the filtrate is observed: if the filtrate is turbid, the feed is stopped, and 0.2% to 0.3% diatomaceous earth filter aid is added to the system. Then, the feed is resumed. When there is no obvious outflow of filtrate, the feed pump is turned off, the flushing valve is opened, and the filter cake is flushed with clean water for 10 to 15 minutes. After flushing, the filter press is depressurized, and the filter cake falls off automatically. The leaching residue and filtrate are collected separately. The filtrate is transferred to the subsequent purification process. Finally, the filter cloth of the filter press and the leaching tank are flushed with clean water, and all power and valves are turned off.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A filtration device for rare earth leaching, comprising a base plate (1), characterized in that, Also includes: A stirring section (2) is provided on the top of the base plate (1); Configuration section (3), which is disposed on the top of base plate (1); The stirring section (2) includes a stirring assembly (21), which is mounted on the top of the base plate (1); A transmission assembly (22) is mounted on the stirring assembly (21); as well as A heating assembly (23) is mounted on a stirring assembly (21); The stirring assembly (21) includes a leaching tank (211) fixedly connected to the top of the base plate (1). A feeding pipe (212) is fixedly connected to the top of the leaching tank (211). A motor (214) is installed on the top of the leaching tank (211). The output shaft of the motor (214) is fixedly connected to a rotating shaft (215) via a coupling. The rotating shaft (215) passes through the leaching tank (211) and is rotatably connected to the leaching tank (211). A main stirring blade (216) is fixedly connected to the outer wall of the rotating shaft (215). A large gear (217) is fixedly connected to the outer wall of the rotating shaft (215). A fixing member is installed on the top of the leaching tank (211). The feeding pipe (212) is connected to the leaching tank (211).

2. The filtration device for rare earth leaching according to claim 1, characterized in that, The configuration unit (3) includes a sewage discharge assembly (31) disposed on the leaching tank (211); and A filter assembly (32) is installed on the right side of the leaching tank (211).

3. The filtration device for rare earth leaching according to claim 2, characterized in that, The transmission assembly (22) includes a plurality of rotating shafts (221) rotatably connected to the leaching tank (211). Auxiliary stirring blades (222) are fixedly connected to the outer walls of the plurality of rotating shafts (221). Small gears (223) are fixedly connected to the top outer walls of the plurality of rotating shafts (221). The plurality of small gears (223) mesh with large gears (217). Among them, the tops of several rotating shafts (221) extend outside the leaching tank (211).

4. The filtration device for rare earth leaching according to claim 3, characterized in that, The heating assembly (23) includes a heating chamber (231) opened on the leaching tank (211), an inlet pipe (232) is fixedly connected to the outer wall of the leaching tank (211), and a temperature sensor (233) is provided on the top of the leaching tank (211). The water inlet pipe (232) is connected to the heating chamber (231).

5. A filtration device for rare earth leaching according to claim 4, characterized in that, The sewage discharge assembly (31) includes a sewage discharge pipe (311) fixedly connected to the bottom of the leaching tank (211), a valve stem (312) rotatably connected to the sewage discharge pipe (311), the front and rear ends of the valve stem (312) extending to the outside of the sewage discharge pipe (311), a valve core (313) fixedly connected to the outer wall of the valve stem (312), and a manual turntable (314) fixedly connected to the front end of the valve stem (312). Among them, the valve core (313) is compatible with the drain pipe (311).

6. A filtration device for rare earth leaching according to claim 5, characterized in that, The filter assembly (32) includes a feed pump (321) disposed on the outer wall of the leaching tank (211), a conveying pipe (322) is fixedly connected to the right end of the feed pump (321), a filter press (323) is disposed on the top of the bottom plate (1), and the right end of the conveying pipe (322) is fixedly connected to the filter press (323). The feed pump (321) is located on the right side of the leaching tank (211).

7. A filtration device for rare earth leaching according to claim 6, characterized in that, The fastener includes a motor sleeve (213) fixedly connected to the top of the leaching tank (211), and the inner wall of the motor sleeve (213) is fixedly connected to the motor (214).

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