Phosphogypsum solid waste treatment device and treatment method

Abstract

This invention discloses a phosphogypsum solid waste treatment device and method, relating to the field of phosphogypsum solid waste treatment technology. It includes a fastener, within which a first washing tank, a second washing tank, and a third washing tank are fitted. The third washing tank includes a washing chamber and a filter frame. A top box is fitted onto the upper side of the washing chamber, and an inlet is provided on one side of the top box, communicating with the interior of the washing chamber. An air pump is fitted onto the upper side of the top box, and a squeezing chamber is provided on the top box. The air pump is connected to the squeezing chamber via a first connecting pipe. A filter plate is fitted into the filter frame, which is configured to cooperate with the squeezing chamber. This invention abandons the current method of using large amounts of clean water for phosphogypsum washing, and instead completes the washing, acid washing, and neutralization washing of phosphogypsum through multi-stage washing, effectively reducing impurities in the phosphogypsum and significantly shortening the processing length.

Description

Technical Field

[0001] This invention relates to the field of phosphogypsum solid waste treatment technology, specifically to a phosphogypsum solid waste treatment device and treatment method. Background Technology

[0002] Phosphogypsum is a byproduct of the wet-process phosphoric acid production process. Its main component is calcium sulfate dihydrate (CaSO4·2H2O), and it also contains small amounts of unreacted phosphorus, fluorine compounds, heavy metals (such as cadmium and lead), and radioactive elements (such as uranium and radium) as impurities.

[0003] Current phosphogypsum recycling processes commonly employ a crude method of immersing the phosphogypsum in large washing tanks for rinsing and sedimentation. This method has significant drawbacks: First, the static rinsing process results in low solid-liquid contact efficiency, leading to processing cycles that can last for several hours and require repeated water changes, resulting in enormous energy and water consumption. Second, traditional gravity sedimentation is ineffective at separating micron-sized particles and adhering impurities (such as soluble phosphorus, fluorides, and heavy metal ions), severely restricting its compliant application in building materials, agriculture, and other fields. Summary of the Invention

[0004] To address the problem of incomplete treatment of phosphogypsum solid waste mentioned in the background art, the present invention aims to provide a phosphogypsum solid waste treatment device and treatment method.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a phosphogypsum solid waste treatment device, comprising fasteners, wherein a first washing tank, a second washing tank, and a third washing tank are fitted together within the fasteners; the first washing tank, the second washing tank, and the third washing tank have the same structure, and the second washing tank is located between the first washing tank and the third washing tank.

[0006] The third washing tank includes a washing tank and a filter frame. A top box is installed on the upper side of the washing tank. A feed inlet is opened on one side of the top box and is connected to the inside of the washing tank. An air pump is installed on the upper side of the top box and a squeezing chamber is opened on the top box. The air pump is connected to the squeezing chamber through a first connecting pipe. A filter plate is installed inside the filter frame and the filter frame is configured to cooperate with the squeezing chamber.

[0007] Preferably, the washing tank is provided with an upper stirring chamber and a lower stirring chamber, the cross-sectional area of ​​the lower stirring chamber being smaller than that of the upper stirring chamber; a connecting plate is installed on one side of the washing tank, and the lower end of the washing tank is connected to the connecting plate through a second connecting pipe; a mud pump is installed on the second connecting pipe, and the mud pump is fixedly installed on the washing tank.

[0008] Preferably, a first stirring motor is installed on the outside of the washing tank, and the first stirring motor drives and connects to a plurality of stirring rods. The stirring rods are located inside the washing tank and have a hollow design.

[0009] Preferably, a rotating shaft is installed on the washing tank, the rotating shaft is located in the lower stirring chamber, a second stirring motor is installed on one side of the washing tank, the second stirring motor drives the rotating shaft, and a plurality of stirring blades are installed on the rotating shaft.

[0010] Preferably, two opposing guide plates are installed inside the washing tank, and the filter frame is slidably fitted with the guide plates.

[0011] Preferably, a hydraulic cylinder is fixedly connected to the top box via a fixing plate, and a scraper is driven by the hydraulic cylinder. The scraper is correspondingly matched with the filter frame. A sealing groove is installed in the extrusion chamber, and the filter frame is correspondingly matched with the sealing groove.

[0012] Preferably, a roll hopper is installed on the upper side of the top box, and a servo motor is installed on one side of the roll hopper. The servo motor and the roll hopper are configured together. A pull rope is provided inside the roll hopper, and the pull rope extends into the lower part of the top box. The lower end of the pull rope is installed on the filter frame.

[0013] Preferably, the washing tank is equipped with an inlet pipe and an outlet pipe, with the inlet pipe located above the outlet pipe. The top box is equipped with a discharge port, which is configured to work with a scraper.

[0014] Preferably, the scraping component includes a scraper and a guide plate, the guide plate is located above the scraper, the scraper has a plurality of scraping protrusions on its lower side, and end plates are fitted at both ends of the scraper and the guide plate.

[0015] Both the scraper and the guide plate are arc plates, and one end of the filter plate is arc-shaped. The scraper and the filter plate are correspondingly matched with the arc-shaped ends.

[0016] This invention includes a method for treating phosphogypsum solid waste, the method comprising the following steps:

[0017] S1. First, phosphogypsum is put into the washing tank through the feed inlet of the first washing tank. Then, the washing liquid is filled into the washing tank through the water inlet pipe. The corresponding first stirring motor is turned on so that the stirring rod stirs the liquid in the upper stirring chamber. The second stirring motor is turned on so that the stirring blades stir the liquid in the lower stirring chamber to make it fully stirred.

[0018] S2. After mixing is complete, the length of the pull rope extending from the hopper is controlled by the servo motor, causing the filter frame to descend and fall into the lower mixing chamber due to its own gravity, separating the upper and lower mixing chambers. At this time, the mud pump is turned on to draw the liquid from the lower mixing chamber into the upper mixing chamber, which reduces the pressure in the lower mixing chamber. As a result, the liquid in the upper mixing chamber passes through the filter plate and enters the lower mixing chamber. During this process, a large amount of phosphogypsum is left on the filter plate.

[0019] S3. After a period of time, the height of the filter frame is raised by the servo motor so that the filter frame and the extrusion chamber are matched. The air pump is turned on so that the pressure in the extrusion chamber increases. Through the change in pressure, the liquid content of phosphogypsum in the filter plate is greatly reduced.

[0020] S4. After a period of time, the height of the filter frame is lowered by the servo motor, and the hydraulic cylinder is extended so that the scraper is above the filter plate. Then, the height of the filter frame is raised by the servo motor so that the scraper is inserted into the filter frame.

[0021] S5. Control the hydraulic cylinder to extend again, and use the scraper to discharge the phosphogypsum on the filter plate into the second washing tank through the discharge port for a second washing (this time it is acid washing, and the washing liquid is dilute sulfuric acid). The washing steps are the same as S1-S4. The phosphogypsum from the second washing will fall into the third washing (this time it is neutralization washing, and the washing liquid is lime milk suspension). Finally, it is discharged through the discharge port of the third washing tank.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This invention abandons the current method of using large amounts of water to wash phosphogypsum. Instead, it completes the washing of phosphogypsum through three processes: water washing, acid washing, and neutralization washing. First, turbulent water washing removes surface impurities (such as phosphorus and fluorine). Then, acidic medium is used for circulating cleaning (pH=3-4) to dissolve residual phosphorus and fluorine compounds and some heavy metals. Finally, an alkaline neutralization reaction (pH=7-8) precipitates heavy metal ions. Compared with the current process, water consumption is reduced and the treatment cycle is significantly shortened, realizing a single-line conversion from industrial solid waste to compliant building materials.

[0024] 2. This invention achieves fully mechanized operation when retrieving phosphogypsum from the washing tank, eliminating the need for manual assistance. During operation, a servo motor controls the height of the filter plate within the washing tank. When material retrieval is required, the filter plate is first moved to a preset height, separating the upper and lower mixing chambers. Negative pressure is used to filter the liquid in the upper mixing chamber, leaving the phosphogypsum on the filter plate. After the phosphogypsum is retrieved, the filter plate is moved to the extrusion chamber, where excess washing liquid is expelled. This significantly reduces the liquid content of the phosphogypsum entering the next washing tank, minimizing the impact of residual washing liquid on the liquid in the next tank. This makes the invention more controllable during use and achieves fully unmanned operation from solid-liquid separation and mechanical dehydration to cross-process contamination control. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the basic structure of a phosphogypsum solid waste treatment device according to the present invention.

[0026] Figure 2 This is a schematic diagram showing the installation position of the first stirring motor in a phosphogypsum solid waste treatment device according to the present invention.

[0027] Figure 3 This invention relates to a phosphogypsum solid waste treatment device. Figure 2 A sectional view.

[0028] Figure 4 This is a schematic diagram of the internal structure of the washing tank in a phosphogypsum solid waste treatment device according to the present invention.

[0029] Figure 5 This invention relates to a phosphogypsum solid waste treatment device. Figure 4 Another perspective view.

[0030] Figure 6 This invention relates to a phosphogypsum solid waste treatment device. Figure 4 The main view.

[0031] Figure 7 This is a schematic diagram showing the internal condition of the washing tank in use of a phosphogypsum solid waste treatment device according to the present invention.

[0032] Figure 8 This is a schematic diagram of the internal structure of the washing tank of a phosphogypsum solid waste treatment device of the present invention after sedimentation.

[0033] Figure 9 This is a schematic diagram showing the cooperation relationship between the filter frame and the extrusion chamber of a phosphogypsum solid waste treatment device according to the present invention.

[0034] Figure 10 This is a schematic diagram of the structure of a phosphogypsum solid waste treatment device of the present invention when the scraper moves above the filter frame.

[0035] Figure 11 This is a schematic diagram of the structure of a phosphogypsum solid waste treatment device of the present invention when the scraper is inserted into the filter frame.

[0036] Figure 12 This is a schematic diagram of the scraping component of a phosphogypsum solid waste treatment device according to the present invention during scraping.

[0037] Figure 13 This is a schematic diagram showing the relationship between the upper and lower stirring chambers of a phosphogypsum solid waste treatment device according to the present invention.

[0038] Figure 14 This is a schematic diagram of the basic structure of the scraper component of a phosphogypsum solid waste treatment device according to the present invention.

[0039] In the diagram: 101, Fastener; 200, First washing tank; 300, Second washing tank; 400, Third washing tank; 401, Washing box; 402, Inlet pipe; 403, Outlet pipe; 404, Guide plate; 405, Filter frame; 406, Filter plate; 407, Top box; 408, Servo motor; 409, Roll hopper; 410, Air pump; 411, First connecting pipe; 412, Feed inlet; 414, First stirring motor; 415, ... 416. Connecting pipe; 417. Mud pump; 418. Connecting plate; 419. Second stirring motor; 420. Stirring rod; 421. Stirring blade; 424. Upper stirring chamber; 425. Lower stirring chamber; 426. Rotating shaft; 427. Discharge port; 428. Pull rope; 429. Hydraulic cylinder; 430. Fixing plate; 431. Scraper; 4311. Scraper; 4312. Guide plate; 4313. End plate; 432. Sealing groove; 433. Extrusion chamber: Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figures 1-14 As shown, this embodiment provides a phosphogypsum solid waste treatment device, including a fastener 101. A first washing tank 200, a second washing tank 300, and a third washing tank 400 are fitted and installed within the fastener 101. The first washing tank 200, the second washing tank 300, and the third washing tank 400 have the same structure. (Refer to...) Figure 1As shown, the second washing tank 300 is located between the first washing tank 200 and the third washing tank 400, and the first washing tank 200, the second washing tank 300 and the third washing tank 400 are arranged adjacent to each other at the end.

[0042] The washing tank (first washing tank 200, second washing tank 300, and third washing tank 400) includes a washing box 401. The washing box 401 is provided with an upper mixing chamber 424 and a lower mixing chamber 425. The lower mixing chamber 425 is smaller than the cross-sectional area of ​​the upper mixing chamber 424. A connecting plate 417 is installed on one side of the washing box 401. The lower end of the washing box 401 is connected to the connecting plate 417 through a second connecting pipe 415. A mud pump 416 is installed on the second connecting pipe 415. The mud pump 416 is installed on the washing box 401. During use, the mud pump 416 can transfer the liquid in the lower mixing chamber 425 to the mixing chamber 424 to achieve cross-flow of liquid and improve the mixing efficiency in the washing box 401.

[0043] A first stirring motor 414 is installed on the outside of the washing tank 401. The first stirring motor 414 drives and connects to several stirring rods 420. The stirring rods 420 are located inside the washing tank 401. A rotating shaft 426 is installed on the washing tank 401. The rotating shaft 426 is located in the lower stirring chamber 425. A second stirring motor 418 is installed on one side of the washing tank 401. The second stirring motor 418 drives and connects to the rotating shaft 426. Several stirring blades 421 are installed on the rotating shaft 426.

[0044] When granular phosphogypsum and washing liquid are added to the washing tank 401, the first stirring motor 414 and the second stirring motor 418 can achieve rapid mixing of phosphogypsum and washing liquid, thereby accelerating the reaction speed. In this embodiment, there are two first stirring motors 414, which can operate alternately, creating turbulence in the washing tank 401, thereby increasing the mixing speed of phosphogypsum and washing liquid. The viscous liquid in the lower stirring chamber 425 is transferred to the upper stirring chamber 424 by the mud pump 416 for stirring, further improving the stirring effect.

[0045] A top box 407 is fitted onto the upper side of the washing tank 401. A feed inlet 412 is located on one side of the top box 407 and communicates with the interior of the washing tank 401. An air pump 410 is fitted onto the upper side of the top box 407. A squeezing chamber 433 is located on the top box 407, and the air pump 410 is connected to the squeezing chamber 433 via a first connecting pipe 411. Two opposing guide plates 404 are fitted inside the washing tank 401. A sliding guide plate 404 is mounted on one side of each guide plate 404. A filter frame 405 is provided, and a filter plate 406 is installed inside the filter frame 405. The filter frame 405 is slidably fitted with a guide plate 404. A roll hopper 409 is installed on the upper side of the top box 407. A servo motor 408 is installed on one side of the roll hopper 409. The servo motor 408 is fitted with the roll hopper 409. A pull rope 428 is provided inside the roll hopper 409. The pull rope 428 extends into the lower part of the top box 407. The lower end of the pull rope 428 is installed on the filter frame 405.

[0046] In this embodiment, the height of the filter plate 406 in the washing tank 401 is controlled by the servo motor 408. When material retrieval is required, the filter plate 406 is first controlled to a preset height to separate the upper stirring chamber 424 and the lower stirring chamber 425. The liquid in the upper stirring chamber is filtered by negative pressure, so that the phosphogypsum remains on the filter plate 406. After the phosphogypsum is retrieved, the filter plate 406 is moved to the extrusion chamber 433 to expel excess washing water.

[0047] A hydraulic cylinder 429 is fixedly connected to the top box 407 via a fixing plate 430. The hydraulic cylinder 429 drives a scraper component 431, which is correspondingly matched with the filter frame 405. The scraper component 431 includes a scraper 4311 and a guide plate 4312. The guide plate 4312 is located above the scraper 4311. Several scraping protrusions are provided on the lower side of the scraper 4311. End plates 4313 are installed at both ends of the scraper 4311 and the guide plate 4312. Both the scraper 4311 and the guide plate 4312 are arc-shaped plates. One end of the filter plate 406 is arc-shaped. The arc-shaped ends of the scraper 4311 and the filter plate 406 are correspondingly matched (see reference). Figure 14 (As shown).

[0048] When using it, refer to Figures 10-13 As shown, when the scraper 431 is in use, the scraper 4311 will be inserted into the filter plate 406. The arc-shaped scraper 4311 will squeeze the phosphogypsum at one end of the filter plate 406 to one side. Then, the hydraulic cylinder 429 drives the scraper 4311 to move, so that the phosphogypsum can be squeezed out from the outlet 427. During this process, the guide plate 4312 is used to control the extrusion direction of the phosphogypsum and prevent the phosphogypsum from falling into the washing tank 401.

[0049] A sealing groove 432 is installed inside the extrusion chamber 433. The filter frame 405 is correspondingly installed in the sealing groove 432. A water inlet pipe 402 and a water outlet pipe 403 are installed inside the washing tank 401. The water inlet pipe 402 is located above the water outlet pipe 403. A discharge port 427 is installed on the top box 407. The discharge port 427 is correspondingly installed in the scraper 431. The discharge ports 427 of the first washing tank 200 and the second washing tank 300 are respectively corresponding to the inlets 412 of the second washing tank 300 and the third washing tank 400. The inlet 412 of the first washing tank 200 is used to feed granular phosphogypsum raw materials. The discharge port 427 of the third washing tank 400 is used to discharge the phosphogypsum that has completed three-stage washing. The phosphogypsum that has completed washing can be used in the project after calcination.

[0050] This embodiment also includes a method for treating phosphogypsum solid waste, the steps of which are as follows:

[0051] S1. First, phosphogypsum is fed into washing tank 401 through inlet 412 of first washing tank 200 for primary washing (the purpose is to remove free acid and soluble phosphorus and fluorine from the surface; the washing solution at this time is clean water, the liquid-to-solid ratio of clean water to phosphogypsum is 3.5:1, the temperature is room temperature, no heating is required). Then, clean water is filled into washing tank 401 through inlet pipe 402. The corresponding first stirring motor 414 is turned on, so that stirring rod 420 agitates the liquid in upper stirring chamber 424. The second stirring motor 418 is turned on, and stirring blade 421 agitates the liquid in lower stirring chamber 425 to ensure thorough mixing (see the schematic diagram after stirring for one end). Figure 7 (as shown);

[0052] S2. After mixing is complete, the length of the pull rope 428 extending from the coil hopper 409 is controlled by the servo motor 408, causing the filter frame 405 to descend and fall into the lower mixing chamber 425 due to its own gravity, separating the upper mixing chamber 424 and the lower mixing chamber 425. At this time, the mud pump 416 is turned on to draw the liquid from the lower mixing chamber 425 into the upper mixing chamber 424, reducing the pressure in the lower mixing chamber 425. Consequently, the liquid in the upper mixing chamber 424 passes through the filter plate 406 and enters the lower mixing chamber 425. During this process, a large amount of phosphogypsum is left on the filter plate 406 (see reference). Figure 8 (as shown);

[0053] S3. After a period of time, the height of the filter frame 405 is raised by the servo motor 408, so that the filter frame 405 and the extrusion chamber 433 are engaged. The air pump 410 is turned on, which increases the pressure in the extrusion chamber 433. Through the change in pressure, the liquid content of phosphogypsum in the filter plate 406 is greatly reduced (refer to...). Figure 9 (as shown);

[0054] S4. After a period of time, the height of the filter frame 405 is lowered by the servo motor 408, and the hydraulic cylinder 429 is extended, so that the scraper 431 is positioned above the filter plate 406. Then, the height of the filter frame 405 is raised by the servo motor 408, so that the scraper 431 is inserted into the filter frame 405 (refer to...). Figure 10 and Figure 11 (as shown);

[0055] S5. Reference Figure 12 and Figure 13 As shown, the hydraulic cylinder 429 extends again, and the scraper 431 discharges the phosphogypsum on the filter plate 406 through the outlet 427 into the second washing tank 300 for a second washing (the purpose is to deeply remove residual fluoride and some heavy metals; the washing solution at this time is dilute sulfuric acid, the pH value of the dilute sulfuric acid solution is 3.5, the liquid-solid ratio of dilute sulfuric acid solution to phosphogypsum is 2.5:1, and the temperature should be set to 50 degrees to improve the solubility of fluoride; a glass heating tank is inserted into the washing tank for heating). The washing steps are the same as S1-S4. The phosphogypsum from the second washing will fall into the third washing tank 400 for a third washing (the purpose is to...). The residual dilute sulfuric acid solution in the phosphogypsum is removed to ensure that the pH value of the washed phosphogypsum meets the standard. At this time, lime milk suspension is also used for washing. The liquid-solid ratio of lime milk suspension to phosphogypsum is 2.5:1, and the temperature is room temperature. Lime milk that can fully mix with phosphogypsum is used for neutralization, so that the phosphogypsum can be used directly without the need for lime milk removal. Finally, it is discharged through the outlet 427 of the third washing tank 400. Compared with the current method of using a large amount of clean water to wash phosphogypsum, the above method can effectively reduce the impurities in phosphogypsum, greatly reducing the impurities and harmful substances in the finished phosphogypsum product, so that the phosphogypsum can be used directly.

[0056] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for treating phosphogypsum solid waste, characterized in that, The method and steps include the following: S1. First, phosphogypsum is put into the washing tank (401) through the feed port (412) of the first washing tank (200). Then, clean water is filled into the washing tank (401) through the water inlet pipe (402). The corresponding first stirring motor (414) is turned on so that the stirring rod (420) stirs the liquid in the upper stirring chamber (424). The second stirring motor (418) is turned on so that the stirring blade (421) stirs the liquid in the lower stirring chamber (425) so that it is fully stirred. S2. After the mixing is completed, the length of the pull rope (428) extending from the roll hopper (409) is controlled by the servo motor (408), so that the filter frame (405) descends and falls into the lower mixing chamber (425) due to its own gravity, separating the upper mixing chamber (424) and the lower mixing chamber (425). At this time, the mud pump (416) is turned on to pump the liquid in the lower mixing chamber (425) into the upper mixing chamber (424), so that the pressure in the lower mixing chamber (425) decreases, and the liquid in the upper mixing chamber (424) passes through the filter plate (406) and enters the lower mixing chamber (425). During this process, a large amount of phosphogypsum is left on the filter plate (406). S3. After a period of time, the height of the filter frame (405) is raised by the servo motor (408), so that the filter frame (405) and the extrusion chamber (433) are matched. The air pump (410) is turned on, so that the pressure in the extrusion chamber (433) increases. Through the change in pressure, the liquid content of phosphogypsum in the filter plate (406) drops significantly. S4. After a period of time, the height of the filter frame (405) is lowered by the servo motor (408), and the hydraulic cylinder (429) is extended so that the scraper (431) is above the filter plate (406). Then, the height of the filter frame (405) is raised by the servo motor (408) so that the scraper (431) is inserted into the filter frame (405). S5. Control the hydraulic cylinder (429) to extend again, and discharge the phosphogypsum on the filter plate (406) through the discharge port (427) into the second water washing tank (300) for a second water washing (this time it is acid washing, and the water washing liquid is dilute sulfuric acid). The water washing steps are the same as S1-S4. The phosphogypsum washed in the second water washing will fall into the third water washing tank (400) for a third water washing (this time it is neutralization water washing, and the water washing liquid is lime milk suspension). Finally, it is discharged through the discharge port (427) of the third water washing tank (400).

2. A treatment apparatus for use in the phosphogypsum solid waste treatment method according to claim 1, characterized in that, Includes a fastener (101), in which a first washing tank (200), a second washing tank (300), and a third washing tank (400) are fitted together; the first washing tank (200), the second washing tank (300), and the third washing tank (400) have the same structure, and the second washing tank (300) is located between the first washing tank (200) and the third washing tank (400); The third washing tank (400) includes a washing tank (401) and a filter frame (405). A top box (407) is installed on the upper side of the washing tank (401). A feed inlet (412) is opened on one side of the top box (407). The feed inlet (412) is connected to the inside of the washing tank (401). An air pump (410) is installed on the upper side of the top box (407). A squeezing chamber (433) is opened on the top box (407). The air pump (410) is connected to the squeezing chamber (433) through a first connecting pipe (411). A filter plate (406) is installed inside the filter frame (405). The filter frame (405) is configured to cooperate with the squeezing chamber (433).

3. The processing apparatus according to claim 2, characterized in that, The washing tank (401) is provided with an upper stirring chamber (424) and a lower stirring chamber (425). The cross-sectional area of ​​the lower stirring chamber (425) is smaller than that of the upper stirring chamber (424). A connecting plate (417) is installed on one side of the washing tank (401). The lower end of the washing tank (401) is connected to the connecting plate (417) through a second connecting pipe (415). A mud pump (416) is installed on the second connecting pipe (415). The mud pump (416) is fixedly installed on the washing tank (401).

4. The processing apparatus according to claim 2, characterized in that, A first stirring motor (414) is installed on the outside of the washing tank (401). The first stirring motor (414) drives and connects to a number of stirring rods (420). The stirring rods (420) are located inside the washing tank (401) and have a hollow design.

5. The processing apparatus according to claim 2, characterized in that, A rotating shaft (426) is installed on the washing tank (401). The rotating shaft (426) is located in the lower stirring chamber (425). A second stirring motor (418) is installed on one side of the washing tank (401). The second stirring motor (418) drives the rotating shaft (426). Several stirring blades (421) are installed on the rotating shaft (426).

6. The processing apparatus according to claim 2, characterized in that, The washing tank (401) has two opposing guide plates (404) installed inside, and the filter frame (405) is slidably fitted with the guide plates (404).

7. The processing apparatus according to claim 2, characterized in that, The top box (407) is fixedly connected to a hydraulic cylinder (429) via a fixing plate (430). The hydraulic cylinder (429) is driven by a scraper (431), which is correspondingly matched with the filter frame (405). A sealing groove (432) is installed in the extrusion chamber (433), and the filter frame (405) is correspondingly matched with the sealing groove (432).

8. The processing apparatus according to claim 2, characterized in that, A roll hopper (409) is installed on the upper side of the top box (407), and a servo motor (408) is installed on one side of the roll hopper (409). The servo motor (408) and the roll hopper (409) are configured together. A pull rope (428) is provided inside the roll hopper (409). The pull rope (428) extends into the lower part of the top box (407), and the lower end of the pull rope (428) is installed on the filter frame (405).

9. The processing apparatus according to claim 2, characterized in that, The washing tank (401) is equipped with an inlet pipe (402) and an outlet pipe (403). The inlet pipe (402) is located above the outlet pipe (403). The top box (407) is equipped with a discharge port (427), which is configured in conjunction with a scraper (431).

10. The processing apparatus according to claim 9, characterized in that, The scraping component (431) includes a scraper (4311) and a guide plate (4312). The guide plate (4312) is located above the scraper (4311). The scraper (4311) has several scraping protrusions on its lower side. Both ends of the scraper (4311) and the guide plate (4312) are fitted with end plates (4313). Both the scraper (4311) and the guide plate (4312) are arc plates. One end of the filter plate (406) is arc-shaped. The scraper (4311) and the filter plate (406) are respectively equipped with arc-shaped ends.

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