A device and method for resource recycling phosphogypsum leachate

Abstract

The present application relates to the field of leachate, particularly to a kind of processing device and method for recycling phosphogypsum leachate;Including reagent mixing tank, leachate storage tank, reagent supply tank and recovery separation tank, the present application can solve the following problems existing in the process of treating phosphogypsum leachate in prior art: unable to continuously treat phosphogypsum leachate for a long time;Phosphogypsum leachate such as phosphate, heavy metals and organic matter cannot be recycled, resulting in waste of resources;The size of the reagent cannot be automatically adjusted according to the amount of phosphogypsum leachate;The present application can separate the solid and liquid of phosphogypsum leachate through the recovery separation tank, extract the recyclable solid materials and store them;The water flow formed by the leachate can automatically adjust the amount of reagent added, so that the leachate reaches the required acidic range after mixing with the reagent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of leachate, particularly to a device and method for recycling and recovering phosphogypsum leachate. BACKGROUND

[0002] Resource recycling of phosphogypsum leachate refers to the effective treatment and recycling technology of leachate generated during the preparation of phosphogypsum. Phosphogypsum leachate contains a large amount of harmful components such as phosphates, heavy metals and organic matter. If it is discharged directly without treatment, it will cause serious pollution to the environment. The resource recycling technology separates, purifies and purifies the leachate by physical, chemical and biological methods, separates the useful components such as phosphates for fertilizer production, recycles heavy metals, and uses organic matter for energy production, thereby achieving effective treatment and recycling of leachate, achieving the purpose of resource recycling, reducing pollution to the environment, and promoting sustainable development.

[0003] A large number of devices for treating phosphogypsum leachate and corresponding devices are disclosed in the prior art. For example, a comprehensive disposal device and treatment process for phosphogypsum wastewater, with publication number CN117326717A, relates to the field of phosphorus-containing wastewater treatment. The prior art includes a first reaction tank and a second reaction tank connected by pipes. The first reaction tank is provided with a water inlet, and the second reaction tank is provided with a water outlet. A horizontal rotating cage is installed in the middle of the first reaction tank, and the rotating cage is filled with sponge iron. The bottom of the first reaction tank is provided with an annular aeration pipe. The water inlet of the first reaction tank is connected to the water outlet of the second reaction tank through a reflux pipe. A plurality of baffles are provided in the second reaction tank, and the baffles form a zigzag channel in the second reaction tank. The zigzag channel is provided with a dosing system corresponding to each bend.

[0004] However, in the process of treating phosphogypsum leachate using the above-mentioned prior art, the following deficiencies exist: 1. The above-mentioned prior art can treat phosphogypsum leachate and make it meet the discharge standard, but the treatment process is slow and cannot continuously treat phosphogypsum leachate for a long time. Moreover, the substances such as phosphates, heavy metals and organic matter in the phosphogypsum leachate are not recovered, resulting in waste of resources.

[0005] 2. The above-mentioned prior art can dose through the dosing system, but it needs multiple dosing systems to add medicine multiple times, and cannot automatically adjust the amount of medicine added according to the amount of phosphogypsum leachate. Errors may occur during dosing, which may affect the subsequent steps.

[0006] Therefore, under the above-mentioned view, the existing technology of phosphogypsum leachate treatment method still has room for improvement. SUMMARY

[0007] In order to solve the above problems, the present application provides a kind of resource recycling phosphogypsum leachate processing device, including reagent mixing tank, reagent mixing tank upper end is connected with leachate storage tank by square board support, it is characterized in that: the reagent mixing tank upper end is connected with reagent supply tank, the reagent supply tank is connected with leachate storage tank, and reagent mixing tank is connected with recovery separation tank away from reagent supply tank side;

[0008] The bottom of the reagent mixing tank is provided with a support frame, and a driving motor is installed on the side of the reagent mixing tank away from the recovery separation tank through a motor base. The driving motor driving shaft is arranged in the middle of the reagent mixing tank, and the driving motor driving shaft is provided with a stirring plate.

[0009] Preferably, the bottom of the reagent supply tank is connected with a conveying pipe, the conveying pipe is communicated with the reagent mixing tank, the conveying pipe is connected with a connecting pipe near the leachate storage tank side, the connecting pipe is communicated with the leachate storage tank, and the connecting pipe is located at the bottom of the side wall of the leachate storage tank.

[0010] Preferably, a plurality of first sector plates are equidistantly distributed on the inner wall of the conveying pipe along the central axis, a connecting rod is rotatably arranged through the plurality of first sector plates, a helical blade is sleeved on the outer wall of the connecting rod, a second sector plate is sleeved on the outer wall of the connecting rod and located at the bottom of the first sector plate, all the second sector plates in the conveying pipe are helically staggered from top to bottom, a spoiler plate is sleeved on the outer wall of the connecting rod, the spoiler plate is located at the bottom of the helical blade, and the spoiler plate is located on the same horizontal line of the connecting pipe.

[0011] Preferably, a pressure pump is installed on the side of the reagent mixing tank close to the recovery separation tank, the reagent mixing tank is connected with the recovery separation tank through a transmission pipe, the transmission pipe is arranged in the interior of the recovery separation tank away from the reagent mixing tank side, two baffles are installed on the inner wall of the recovery separation tank close to the reagent mixing tank side, the two baffles are located on both sides of the transmission pipe, a plurality of high-pressure nozzles are installed on the outer wall of the transmission pipe close to both sides of the baffles along the length direction of the transmission pipe, and a heating pipe is connected to the side of the baffle away from the high-pressure nozzle.

[0012] Preferably, the baffle plate is vertically arranged along the longitudinal direction.

[0013] Preferably, the two sliding blocks are connected with telescopic rods away from the placement plate, and the opposite sides of the two connecting rods are connected with scrapers, the scraper is in contact with the placement plate away from the placement plate, and the opposite sides of the two shafts located on the same vertical line are jointly connected with auxiliary shafts.

[0014] Preferably, the bottom of the recovery separation tank is provided with a discharge port, and the bottom of the recovery separation tank is provided with guide plates on both sides of the discharge port.

[0015] Preferably, the upper end of the recovery separation tank is provided with a steam emission hole, and the upper end of the recovery separation tank is provided with a collecting hopper.

[0016] Preferably, the baffle plate is vertically arranged along the longitudinal direction.

[0017] In addition, the application also provides a treatment method for resource recycling of phosphogypsum leachate, comprising the following steps: S1: leachate and reagent mixing: when the leachate passes through the reagent supply tank, the reagent in the reagent supply tank is added with the flow speed of the leachate, and then the leachate and the reagent are mixed in the reagent mixing tank;

[0018] S2: solid-liquid separation of leachate: the leachate is evaporated by the recovery separation tank to make the recyclable substances remain, and the water becomes steam to evaporate, so as to carry out solid-liquid separation, and the recyclable substances are dried after separation;

[0019] S3: recycling solid substances: the recyclable substances separated out are scraped off by the recovery separation tank, and are recycled and stored;

[0020] S4: Water vapor condensation: The percolation liquefied as water vapor is discharged from the upper end of the recovery separation tank and is condensed into water droplets during the discharging process.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] Firstly, the present application scrapes the solid substances on the surface of the baffle by the scraper, and the solid substances fall onto the guide plate through the discharge port, and then slide along the guide plate to the drawer, and when the recovery is completed, the drawer is pulled out by the handle to take out the solid substances recovered in the drawer, thereby realizing the recovery of the solid substances.

[0023] Secondly, when the water flow formed by the percolation liquid flows through the spoiler curved plate, the spoiler curved plate and the connecting rod are driven to rotate, the connecting rod drives the spiral blade and the second fan-shaped plate to rotate synchronously, and when the gap between the second fan-shaped plate and the first fan-shaped plate coincides during the rotation, the medicament in the upper end medicament supply tank flows downward from the gap, and at the same time, the spiral blade accelerates the flow of the medicament during the rotation, and then the medicament enters the medicament mixing tank along the conveying pipe, thereby realizing automatic adjustment of the amount of medicament added according to the flow of the percolation liquid, so that the percolation liquid reaches the required acidic range after mixing with the medicament. BRIEF DESCRIPTION OF DRAWINGS

[0024] The present application will be further described below in conjunction with the drawings and examples.

[0025] Figure 1 is a structural schematic diagram of the present application.

[0026] Figure 2 is a first structural schematic diagram of the medicament supply tank of the present application.

[0027] Figure 3 is a second structural schematic diagram of the medicament supply tank of the present application.

[0028] Figure 4 is a third structural schematic diagram of the medicament supply tank of the present application.

[0029] Figure 5 is a first structural schematic diagram of the recovery separation tank of the present application.

[0030] Figure 6 is a first structural schematic diagram of the placement plate of the present application.

[0031] Figure 7 is a second structural schematic diagram of the placement plate of the present application.

[0032] Figure 8 is a third structural schematic diagram of the placement plate of the present application.

[0033] Figure 9 is a structural schematic diagram of the present application Figure 7A local enlarged view of A in FIG. 1.

[0034] Figure 10 is a second structural schematic view of the recycling separation tank of the present application. Figure 7 is a local enlarged view of B in FIG. 1.

[0035] Figure 11 is a second structural schematic view of the recycling separation tank of the present application.

[0036] Figure 12 is a first structural schematic view of the baffle of the present application.

[0037] In the figure, 1, a medicament mixing tank; 2, a leachate storage tank; 3, a medicament supply tank; 4, a recycling separation tank; 11, a support frame; 12, a driving motor; 13, a stirring plate; 31, a conveying pipe; 32, a connecting pipe; 33, a first sector plate; 34, a connecting rod; 35, a helical blade; 36, a second sector plate; 37, a turbulence curved plate; 41, a pressurizing pump; 42, a transmission pipe; 43, a baffle; 44, a high-pressure nozzle; 45, a heating pipe; 46, a mounting plate; 461, a rotating shaft; 462, a transmission belt; 463, a T-shaped sliding rail; 464, a stop block; 465, a sliding block; 466, a tension spring; 467, a trigger plate; 468, a containing groove; 469, a trigger spring; 470, a trigger block; 471, a telescopic rod; 472, a scraper; 473, an auxiliary shaft; 474, a transmission motor; 475, a connecting belt; 48, a discharge port; 49, a guide plate; 50, a collection tank; 51, a drawer; 52, a handle; 53, a steam emission hole; 54, a collection hopper; 55, a cooling pipe; 431, a retaining groove; 432, an inclined groove; 433, a scraping tooth. DETAILED DESCRIPTION

[0038] The following will be described in detail in combination with the accompanying drawings. Figures 1-12 The embodiments of the present application are described in detail, but the present application can be implemented in various different ways limited and covered by the claims.

[0039] The embodiments of the present application disclose a processing device for recycling leachate of phosphogypsum, which is mainly applied to the processing of recycling leachate of phosphogypsum and can automatically adjust the amount of medicament according to the flow size of the leachate, so that the leachate reaches the required acidic range after mixing with the medicament. In particular, in the processing process, the atomized leachate is evaporated into water vapor to rise, and the solid substances to be recycled are left on the surface of the baffle 43. Further, the processing device for recycling leachate of phosphogypsum can quickly scrape along the surface of the baffle 43, so as to scrape the solid substances on the surface of the baffle 43 and continuously recycle the solid substances in the leachate.

[0040] Embodiment I:

[0041] Referring to Figure 1 As shown in the figure, a kind of processing device of resource recycling phosphogypsum percolate, including reagent mixing tank 1, the upper end of reagent mixing tank 1 is connected with percolate storage tank 2 by square plate support, reagent mixing tank 1 upper end is connected with reagent supply tank 3, reagent supply tank 3 is connected with percolate storage tank 2, reagent mixing tank 1 side away from reagent supply tank 3 is connected with recovery separation tank 4.

[0042] It should be noted that, in the present embodiment, the reagent is prior art (such as aluminum sulfate, polyaluminum chloride, etc.) to promote the coagulation and precipitation of suspended solids in solution, thereby removing harmful substances.

[0043] In the specific implementation process, the phosphogypsum percolate is stored in percolate storage tank 2, then the percolate enters the reagent mixing tank 1 through the reagent supply tank 3, when the percolate passes through the reagent supply tank 3, the reagent in the reagent supply tank 3 will join the corresponding amount of reagent following the flow rate of the percolate, then the percolate and the reagent are mixed in the reagent mixing tank 1, after mixing, the percolate enters the recovery separation tank 4 for solid-liquid separation to recover the solid particles in the percolate.

[0044] Referring to Figure 1 And Figure 2 As shown in the figure, in order to mix the reagent and the percolate and precipitate, based on this, in the present embodiment, the reagent mixing tank 1 bottom is provided with support frame 11, the reagent mixing tank 1 side away from recovery separation tank 4 is provided with driving motor 12 through motor base, the driving motor 12 driving shaft is arranged in the middle of the reagent mixing tank 1, the driving motor 12 output shaft is provided with stirring plate 13.

[0045] It should be noted that, in the present embodiment, the solid substance is (phosphate, heavy metal, organic matter, etc.) recyclable material.

[0046] In the specific implementation process, when the reagent and the percolate enter the reagent mixing tank 1, start the driving motor 12, the driving motor 12 drives the stirring plate 13 to stir the reagent and the percolate, so that the reagent and the percolate are fully mixed to ensure that the PH value is adjusted to the required acidic range, then the solid substance in the percolate is separated from the water.

[0047] Referring to Figure 2 , Figure 3 And Figure 4As shown, in order to make the leachate PH value to reach the accurate acidic range, and according to the amount of leachate automatically adjust the amount of the added reagent, based on this in the present embodiment provides the reagent supply tank 3; Specifically, the reagent supply tank 3 bottom is connected with the conveying pipe 31, the conveying pipe 31 is communicated with the reagent mixing tank 1, the conveying pipe 31 is connected with the connecting pipe 32 near the leachate storage tank 2 side, the connecting pipe 32 is communicated with the leachate storage tank 2, and the connecting pipe 32 is located at the bottom of the side wall of the leachate storage tank 2.

[0048] Further, in the present embodiment, the inner wall of the conveying pipe 31 is equidistantly distributed with a plurality of first sector plates 33 along the central axis, a plurality of first sector plates 33 are collectively provided with a connecting rod 34, the outer wall of the connecting rod 34 is sleeved with a spiral blade 35, the outer wall of the connecting rod 34 is sleeved with a second sector plate 36 located at the bottom of the first sector plate 33, all the second sector plates 36 in the conveying pipe 31 are spirally staggered from top to bottom, the outer wall of the connecting rod 34 is sleeved with a spoiler 37, the spoiler 37 is located at the bottom of the spiral blade 35, and the spoiler 37 is located on the same horizontal line of the connecting pipe 32.

[0049] In the specific implementation process, the leachate storage tank 2 delivers the leachate stored in its interior to the connecting pipe 32 through the connecting pipe 32, and then the water flow formed by the leachate drives the spoiler 37 and the connecting rod 34 to rotate when flowing through the spoiler 37, the connecting rod 34 drives the spiral blade 35 and the second sector plate 36 to rotate synchronously, and when the gap between the second sector plate 36 and the first sector plate 33 coincides during rotation, the reagent in the upper reagent supply tank 3 flows downward from the gap, and the reagent is accelerated to flow during the rotation of the spiral blade 35, and then the reagent enters the reagent mixing tank 1 along the conveying pipe 31, thereby realizing automatic adjustment of the amount of reagent according to the flow rate of the leachate, so that the leachate reaches the required acidic range after mixing with the reagent.

[0050] Referring to Figure 5 and Figure 6 As shown, in order to extract and recycle the solid substances in the leachate, based on this in the present embodiment, a recovery separation tank 4 is provided; Specifically, the reagent mixing tank 1 is installed with a pressurizing pump 41 near the recovery separation tank 4 side, the reagent mixing tank 1 is connected with the recovery separation tank 4 through the transmission pipe 42, the transmission pipe 42 is provided in the interior of the recovery separation tank 4 away from the reagent mixing tank 1 side, two vertically arranged baffles 43 are installed on the inner wall of the recovery separation tank 4 near the reagent mixing tank 1 side, the two baffles 43 are located on both sides of the transmission pipe 42, a plurality of high-pressure nozzles 44 are installed on the outer wall of the transmission pipe 42 near both sides of the baffles 43 along the length direction, and the baffles 43 are connected with a heating pipe 45 away from the high-pressure nozzles 44 side.

[0051] In the specific implementation process, the heating pipe 45 is started, and the heating pipe 45 preheats the baffle 43. When the leaching solution reaches the required pH value after mixing with the reagent, the pressurized pump 41 draws the mixed leaching solution and solid substances from the reagent mixing tank 1 into the transmission pipe 42 and sprays them out of the high-pressure nozzle 44. The high-pressure nozzle 44 sprays the atomized leaching solution and solid substances, and then the atomized leaching solution is evaporated into water vapor and rises, and the solid substances remain on the surface of the baffle 43.

[0052] Referring to Figure 6 、 Figure 7 Figure 8 、 Figure 9 and Figure 10 In order to quickly recover the solid substances separated from the leaching solution and avoid affecting the separation of the leaching solution and the solid substances, a setting plate 46 is provided in the embodiment. Specifically, the baffle 43 is provided with the setting plate 46 on both sides. The setting plate 46 extends away from the high-pressure nozzle 44, and the side of the setting plate 46 close to the high-pressure nozzle 44 is flush with the baffle 43. Two rotating shafts 461 are installed on the side of the setting plate 46 away from the heating pipe 45. The rotating shafts 461 are symmetrically distributed along the length direction of the setting plate 46. The two rotating shafts 461 are jointly sleeved with a transmission belt 462. The upper end of the transmission belt 462 is provided with a T-shaped sliding rail 463. The upper end of the transmission belt 462 is slidingly provided with a stop block 464. The T-shaped sliding rail 463 is slidingly provided with a sliding block 465. The stop block 464 and the sliding block 465 are provided with a tension spring 466 on the opposite side. Two diagonal corners of the upper end of the setting plate 46 are provided with a trigger plate 467. The side of the trigger plate 467 close to the rotating shaft 461 is provided with a receiving groove 468. The receiving groove 468 is provided with a trigger spring 469. The trigger spring 469 is connected with a trigger block 470 on the side close to the rotating shaft 461.

[0053] The two sliding blocks 465 are connected with telescopic rods 471 on the side away from the setting plate 46. The telescopic rods 471 are connected with a scraper 472 on the opposite side. The scraper 472 is in contact with the setting plate 46 on the side close to the setting plate 46. The two rotating shafts 461 on the opposite side of the same vertical line are jointly connected with an auxiliary shaft 473. The upper end of the setting plate 46 close to the bottom is provided with a transmission motor 474 through a motor base. The output shaft of the transmission motor 474 and the two auxiliary shafts 473 are jointly sleeved with a connecting belt 475.

[0054] It should be noted that the side of the trigger block 470 close to the transmission belt 462 is an inclined surface that gradually approaches the transmission belt 462. The elastic force of the trigger spring 469 is smaller than the maximum elastic force of the tension spring 466. The scraper 472 cannot rotate under the restriction of the baffle 43, so it can only reciprocate along the surface of the baffle 43.

[0055] In the specific implementation process, the drive motor 474 is started. The output shaft of the drive motor 474 drives two auxiliary shafts 473 to rotate via a connecting belt 475. The two auxiliary shafts 473 drive the rotating shaft 461 to rotate, which in turn drives the drive belt 462 to rotate. The drive belt 462 drives the upper T-shaped slide rail 463 and the stop block 464 to rotate synchronously. The stop block 464 drives the sliding block 465 to move synchronously via a tension spring 466. Subsequently, when the stop block 464 passes the trigger plate 467, the sliding block 465 contacts the trigger block 470. The stop block 464 continues to move with the drive belt 462, and the sliding block 465 remains in contact with the trigger block 470. Under the limit, it slides on the T-shaped slide rail 463. The tension spring 466 stretches adaptively. When the tension spring 466 is stretched to the limit of elasticity, the trigger block 470 moves into the receiving groove 468 under the pressure of the sliding block 465. The trigger spring 469 retracts adaptively. Then, under the tension of the tension spring 466, the sliding block 465 moves quickly along the T-shaped slide rail 463 to the side closer to the stop block 464, and drives the telescopic rod 471 and the scraper 472 to quickly scrape off the solid material on the surface of the baffle 43, thereby scraping off the solid material on the surface of the baffle 43 and avoiding the adhesion of the leachate sprayed by the high-pressure nozzle 44 to the upper end of the scraper 472.

[0056] When the drive belt 462 rotates to the shaft 461, the sliding block 465 drives the telescopic rod 471 to move away from the scraper 472. The telescopic rod 471 extends and retracts adaptively. Then, the drive belt 462 drives the stop block 464 and the sliding block 465 to move to the opposite side of the two drive belts 462. The sliding block 465 stops moving at the limit position of the trigger block 470 on the opposite side of the two drive belts 462. Then, the tension spring 466 extends adaptively. When the tension spring 466 extends to the limit again, the trigger block 470 retracts into the receiving groove 468. Then, the sliding block 465 drives the telescopic rod 471 and the scraper 472 to move quickly towards the side of the reagent mixing tank 1, thereby scraping off the solid matter on the surface of the baffle 43 again and running in a cycle, so as to continuously recover the solid matter in the leachate.

[0057] Reference Figure 3 , Figure 4 and Figure 11 As shown, in order to facilitate the collection of scraped solid materials and to cool and discharge the water vapor generated by the leachate, in this embodiment, a discharge port 48 is provided at the bottom of the recycling separation box 4. Guide plates 49 are installed on both sides of the discharge port 48 at the bottom of the recycling separation box 4. Both guide plates 49 are inclined towards the middle of the recycling separation box 4. A collection box 50 is installed at the bottom of the guide plates 49. A drawer 51 is installed on the side of the collection box 50 away from the drug mixing tank 1. A handle 52 is installed on the side of the drawer 51 away from the drug mixing tank 1.

[0058] The upper end of the recovery separation tank 4 is provided with a steam emission hole 53, and a collecting hopper 54 is installed at the upper end of the recovery separation tank 4, and the upper end of the collecting hopper 54 is connected with a cooling pipe 55.

[0059] In the specific implementation process, the solid matter scraped from the baffle 43 falls into the drawer 51 from the discharge port 48, and the solid matter slides into the drawer 51 along the guide plate 49, and when the recovery is completed, the drawer 51 is pulled out by the handle 52 to take out the solid matter recovered in the drawer 51.

[0060] In the process of rising of the water vapor, the water vapor is gathered through the collecting hopper 54 and cooled through the cooling pipe 55, so as to be condensed into water and discharged from the cooling pipe 55, avoiding the discharge of harmful substances in the leachate and thus polluting the environment.

[0061] Embodiment Two

[0062] Referring to Figure 12 On the basis of Embodiment One, in order to avoid the leachate sprayed by the high-pressure spray head 44 from sliding quickly along the surface of the baffle 43 after being sprayed along the surface of the baffle 43 without being evaporated, so that the solid matter cannot be separated, based on this, the baffle 43 is further improved on the basis of the original baffle 43; specifically, the two baffles 43 are both inclinedly arranged towards the opposite sides thereof, the opposite sides of the two baffles 43 are both provided with retention grooves 431 arranged equidistantly along the width direction thereof, the two sides of each retention groove 431 are both provided with inclined grooves 432 gradually inclined downward, and the scraping plates 472 are both connected with scraping teeth 433 corresponding to the retention grooves 431 on the side close to the baffle 43.

[0063] In the specific implementation process, after the mixed leachate is sprayed and atomized by the high-pressure spray head 44, a large amount of leachate is evaporated into water vapor on the surface of the baffle 43, then a small amount of atomized leachate is retained in the retention groove 431 and evaporated, and then part of the leachate condenses into water droplets on the inclined surface of the baffle 43 and then slides into the retention groove 431 and is gradually heated and evaporated, then the solid matter in the retention groove 431 is scraped by the scraping plate 472 during the scraping process, and then the solid matter in the retention groove 431 slides into the drawer 51 along the inclined groove 432.

[0064] In addition, the application also provides a treatment method for recycling and recovering phosphogypsum leachate, which comprises the following steps: S1, mixing the leachate with the medicament: the phosphogypsum leachate is stored in the leachate storage tank 2, and when the leachate passes through the medicament supply tank 3, the medicament in the medicament supply tank 3 will join the corresponding amount of medicament at the flow speed of the leachate.

[0065] The leachate storage tank 2 transports the leachate stored in its interior to the connecting pipe 32, and then the water flow formed by the leachate drives the turbulence curved plate 37 and the connecting rod 34 to rotate when the water flow flows through the turbulence curved plate 37, the connecting rod 34 drives the helical blade 35 and the second sector plate 36 to rotate synchronously, and in the rotating process, when the gap between the second sector plate 36 and the first sector plate 33 coincides, the medicament in the upper medicament supply tank 3 flows downward from the gap, and at the same time, the helical blade 35 makes the medicament flow faster in the rotating process, and then the medicament enters the medicament mixing tank 1 along the conveying pipe 31, so as to realize automatic adjustment of the amount of medicament added according to the flow of the leachate, and make the leachate reach the required acidic range after mixing with the medicament.

[0066] When the medicament and the leachate enter the medicament mixing tank 1, the driving motor 12 is started, the driving motor 12 drives the stirring plate 13 to stir the medicament and the leachate, so as to make the medicament and the leachate fully mixed to ensure that the PH value is adjusted to the required acidic range, and then the solid substances in the leachate are separated from the water.

[0067] S2, leachate solid-liquid separation: in the specific implementation process, the heating pipe 45 is started, the heating pipe 45 preheats the baffle 43, when the leachate reaches the required pH value after mixing with the medicament, the pressurized pump 41 draws the mixed leachate and solid substances from the medicament mixing tank 1 into the transmission pipe 42 and sprays them from the high-pressure spray head 44, the high-pressure spray head 44 sprays the atomized leachate and solid substances, and then the atomized leachate and solid substances are sprayed onto the surface of the baffle 43, and then the atomized leachate is evaporated into water vapor rising, and the solid substances remain on the surface of the baffle 43.

[0068] S3, recovery of solid matter: start the transmission motor 474, the output shaft of the transmission motor 474 drives the two auxiliary shafts 473 through the connecting belt 475, the two auxiliary shafts 473 drive the rotating shaft 461, the rotating shaft 461 drives the transmission belt 462, the transmission belt 462 drives the upper T-shaped slide rail 463 and the stop block 464 to rotate synchronously, the stop block 464 drives the sliding block 465 to move synchronously through the extension spring 466, then when the stop block 464 passes through the trigger plate 467, the sliding block 465 is in contact with the trigger block 470, the stop block 464 continues to move along with the transmission belt 462, the sliding block 465 slides on the T-shaped slide rail 463 under the limitation of the trigger block 470, the extension spring 466 is adaptively stretched, when the extension spring 466 is stretched to the elastic limit, the trigger block 470 moves into the containing groove 468 under the extrusion of the sliding block 465, the trigger spring 469 is adaptively retracted, then the sliding block 465 moves along the T-shaped slide rail 463 to the side close to the stop block 464 under the tension of the extension spring 466, and drives the telescopic rod 471 and the scraper 472 to quickly scrape along the surface of the baffle 43, so as to scrape off the solid matter on the surface of the baffle 43, avoiding affecting the attachment of the leachate sprayed by the high-pressure nozzle 44 on the upper end of the scraper 472.

[0069] When the transmission belt 462 rotates to the rotating shaft 461, the sliding block 465 drives the telescopic rod 471 to move away from the scraper 472, the telescopic rod 471 is adaptively telescopic, then the transmission belt 462 drives the stop block 464 and the sliding block 465 to move to the opposite side of the two transmission belts 462, the sliding block 465 stops moving under the limitation of the trigger block 470 on the opposite side of the two transmission belts 462, then the extension spring 466 is adaptively stretched, when the extension spring 466 is stretched to the limit again, the trigger block 470 retracts into the containing groove 468, then the sliding block 465 drives the telescopic rod 471 and the scraper 472 to quickly move to the side close to the medicament mixing tank 1, so as to scrape off the solid matter on the surface of the baffle 43 again, and cyclically operate, so as to continuously recover the solid matter in the leachate.

[0070] The solid matter scraped off from the baffle 43 falls into the drawer 51 from the discharge port 48, and the solid matter slides into the drawer 51 along the guide plate 49, and when the recovery is completed, the drawer 51 is pulled out by the handle 52 to take out the recovered solid matter in the drawer 51.

[0071] S4, water vapor condensation: in the process of rising of water vapor, the water vapor is gathered by the collecting hopper 54 and cooled by the cooling pipe 55, so as to be condensed into water and discharged from the cooling pipe 55, avoiding the discharge of harmful substances in the leachate to pollute the environment.

[0072] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0073] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description is made in this way only for the sake of clarity, and a person skilled in the art should consider the description as a whole, and the technical solutions in each embodiment can also be combined appropriately to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A treatment device for resource recovery of phosphogypsum leachate, comprising a reagent mixing tank (1), wherein a leachate storage tank (2) is connected to the upper end of the reagent mixing tank (1) via a square plate support, characterized in that: The upper end of the drug mixing tank (1) is connected to the drug supply tank (3), the drug supply tank (3) is connected to the leachate storage tank (2), and the side of the drug mixing tank (1) away from the drug supply tank (3) is connected to the recovery separation box (4). The bottom of the drug mixing tank (1) is equipped with a support frame (11). A drive motor (12) is installed on the side of the drug mixing tank (1) away from the recovery and separation box (4) via a motor base. The drive shaft of the drive motor (12) passes through the middle of the drug mixing tank (1). A stirring plate (13) is sleeved on the outer wall of the drive shaft of the drive motor (12). A pressure pump (41) is installed on the side of the drug mixing tank (1) near the recovery separation tank (4). The drug mixing tank (1) is connected to the recovery separation tank (4) through a transmission pipe (42). The side of the transmission pipe (42) away from the drug mixing tank (1) passes through the inside of the recovery separation tank (4). Two baffles (43) are installed on the inner wall of the recovery separation tank (4) near the drug mixing tank (1). The two baffles (43) are located on both sides of the transmission pipe (42). Multiple high-pressure nozzles (44) are installed along the length of the outer wall of the transmission pipe (42) near the baffles (43). A heating pipe (45) is connected to the side of the baffles (43) away from the high-pressure nozzles (44). The baffle (43) is equipped with mounting plates (46) on both its upper and lower sides. The mounting plates (46) extend away from the high-pressure nozzle (44), and the side of the mounting plates (46) closest to the high-pressure nozzle (44) is flush with the baffle (43). Two rotating shafts (461) are mounted on the side of the mounting plates (46) away from the heating tube (45). The rotating shafts (461) are symmetrically distributed along the length of the mounting plates (46). The two rotating shafts (461) are fitted with a drive belt (462). A T-shaped slide rail (463) is mounted on the upper end of the drive belt (462). 462) A stop block (464) is slidably installed on the upper end, and a sliding block (465) is slidably installed on the T-shaped slide rail (463). A tension spring (466) is installed on the opposite side of the stop block (464) and the sliding block (465). A trigger plate (467) is installed at two diagonal points on the upper end of the mounting plate (46). A receiving groove (468) is opened on the side of the trigger plate (467) near the rotating shaft (461). A trigger spring (469) is installed in the receiving groove (468). A trigger block (470) is connected to the side of the trigger spring (469) near the rotating shaft (461). The baffle (43) is equipped with mounting plates (46) on both its upper and lower sides. The mounting plates (46) extend away from the high-pressure nozzle (44), and the side of the mounting plates (46) closest to the high-pressure nozzle (44) is flush with the baffle (43). Two rotating shafts (461) are mounted on the side of the mounting plates (46) away from the heating tube (45). The rotating shafts (461) are symmetrically distributed along the length of the mounting plates (46). The two rotating shafts (461) are fitted with a drive belt (462). A T-shaped slide rail (463) is mounted on the upper end of the drive belt (462). 462) A stop block (464) is slidably installed on the upper end, and a sliding block (465) is slidably installed on the T-shaped slide rail (463). A tension spring (466) is installed on the opposite side of the stop block (464) and the sliding block (465). A trigger plate (467) is installed at two diagonal points on the upper end of the mounting plate (46). A receiving groove (468) is opened on the side of the trigger plate (467) near the rotating shaft (461). A trigger spring (469) is installed in the receiving groove (468). A trigger block (470) is connected to the side of the trigger spring (469) near the rotating shaft (461). The two sliding blocks (465) are connected to telescopic rods (471) on the side away from the mounting plate (46), and the two connecting rods (34) are connected to scrapers (472) on opposite sides. The scrapers (472) are in contact with the mounting plate (46) on the side closer to the mounting plate (46). The two rotating shafts (461) on the same vertical line are connected to auxiliary shafts (473) on opposite sides. The upper end of the mounting plate (46) near the bottom is equipped with a drive motor (474) through a motor seat. The output shaft of the drive motor (474) and the two auxiliary shafts (473) are fitted with a connecting belt (475).

2. The treatment device for resource-based recovery of phosphogypsum leachate according to claim 1, characterized in that: The bottom of the drug supply tank (3) is connected to a delivery pipe (31), which is connected to the drug mixing tank (1). The delivery pipe (31) is connected to a connecting pipe (32) on the side of the leachate storage tank (2), which is connected to the leachate storage tank (2) and is located at the bottom of the side wall of the leachate storage tank (2).

3. The treatment device for resource-based recovery of phosphogypsum leachate according to claim 2, characterized in that: The inner wall of the conveying pipe (31) is equidistantly distributed with multiple first sector plates (33) along its central axis. Multiple first sector plates (33) are rotatably connected to a connecting rod (34). The outer wall of the connecting rod (34) is fitted with a spiral blade (35). The outer wall of the connecting rod (34) is fitted with a second sector plate (36) located at the bottom of the first sector plate (33). The notches of all the second sector plates (36) in the conveying pipe (31) are spirally staggered from top to bottom. The outer wall of the connecting rod (34) is fitted with a turbulence-disrupting curved plate (37). The turbulence-disrupting curved plate (37) is located at the bottom of the spiral blade (35) and is located on the same horizontal line as the connecting pipe (32).

4. The treatment device for resource-based recovery of phosphogypsum leachate according to claim 1, characterized in that: The bottom of the recycling separation box (4) is provided with a discharge port (48). Guide plates (49) are installed on both sides of the discharge port (48) at the bottom of the recycling separation box (4). Both guide plates (49) are inclined towards the middle of the recycling separation box (4). A collection box (50) is installed at the bottom of the guide plate (49). A drawer (51) is installed on the side of the collection box (50) away from the medicine mixing tank (1). A handle (52) is installed on the side of the drawer (51) away from the medicine mixing tank (1).

5. The treatment device for resource-based recovery of phosphogypsum leachate according to claim 1, characterized in that: The upper end of the recycling separation box (4) is provided with a steam vent (53), and a collection hopper (54) is installed on the upper end of the recycling separation box (4). A cooling pipe (55) is connected to the upper end of the collection hopper (54).

6. The treatment device for resource-based recovery of phosphogypsum leachate according to claim 1, characterized in that: The baffle (43) is set vertically along the longitudinal direction.

7. A method for treating leachate from phosphogypsum for resource recovery, comprising the treatment apparatus for leachate from phosphogypsum for resource recovery as described in any one of claims 1-6, characterized in that, The method includes the following steps: S1: Mixing of leachate and agent: As the leachate passes through the agent supply tank (3), the agent in the agent supply tank (3) is added following the flow rate of the leachate, and then the leachate and agent are mixed in the agent mixing tank (1); S2: Leachate solid-liquid separation: The leachate is evaporated through the recycling separation tank (4), so that the recyclable substances are retained, and the water in it is evaporated as steam, thereby performing solid-liquid separation, and the recyclable substances are dried after separation. S3: Recycling solid materials: The recyclable materials separated by the recycling separator (4) are scraped off and recycled and stored. S4: Water vapor condensation: The leachate turns into water vapor and is discharged from the top of the recovery separation box (4). During the discharge process, it cools and condenses into water droplets and is then discharged.

Images