A waste treatment device for comprehensive utilization of jarosite residue

Abstract

The present application relates to waste treatment equipment technical field, specifically is related to a kind of waste treatment equipment for comprehensive utilization of iron alum residue, including the circulating oxidation stirring device installed on waste liquid mixing bucket, circulating oxidation stirring device includes the flow mixing pipe installed in waste liquid mixing bucket inside, and the liquid inlet end of flow mixing pipe is installed with circulating oxygenation pipe, circulating oxygenation pipe is used to inject air into the flowing waste acid, and the liquid inlet end of circulating oxygenation pipe is communicated with the bottom of waste liquid mixing bucket, circulating oxygenation pipe is installed with circulating delivery pump and solenoid valve, and circulating delivery pump provides suction force for circulating oxygenation pipe, the present application can effectively improve the efficiency and effect of waste acid treatment, while saving manpower.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste treatment equipment, in particular to a waste treatment equipment for comprehensive utilization of jarosite residue. BACKGROUND

[0002] Jarosite residue is a typical acid metallurgical slag produced in the iron removal process of the jarosite method in the zinc hydrometallurgy process, and belongs to the dangerous solid waste containing iron sulfate. Its main components are Fe (20%-30%), S (10%-15%), Zn (2%-5%), and trace amounts of heavy metal elements such as As, Cd, Pb, Ga, and In, and the phase composition is mainly jarosite (KFe3(SO4)2(OH)6), with associated zinc ferrite (ZnFe2O4) and zinc silicate (Zn2SiO4) stable mineral phases. The slag is rich in sulfate and heavy metal ions, and long-term storage is prone to leaching by rainwater, resulting in acid seepage (pH 1.5-3.0) and migration of heavy metal ions (such as As 3+ , Cd 2+ ), which poses a serious threat to the soil and groundwater ecosystems. At present, the global zinc smelting industry annually discharges about 50% of the zinc production as jarosite residue, but due to its complex mineral structure and stable heavy metal occurrence, the resource utilization rate is less than 10%, and it is urgent to develop efficient and green co-processing technologies to achieve the dual goals of environmental risk control and valuable metal recovery.

[0003] Chinese Patent No. CN110255770B discloses a method for treating arsenic in non-ferrous smelting waste acid by using jarosite residue and calcium carbide slag, which belongs to the technical field of heavy metal pollution control. The jarosite residue and calcium carbide slag are mixed uniformly, and ball milling is performed to obtain a mixture with a particle size of not more than 0.56 μm; the mixture and potassium permanganate are added to the waste acid and mixed uniformly, and air is continuously introduced and oxidized to remove arsenic for 24-36 hours to obtain a solid-liquid mixture; the solid-liquid mixture is separated to obtain an arsenic-containing solid and a filtrate, and the arsenic-containing solid is stored for treatment, and the filtrate is subjected to further arsenic removal treatment. The present application uses jarosite residue and calcium carbide slag to remove arsenic from waste acid, which has excellent arsenic removal effect, simple process operation, low production cost, and less sludge after arsenic removal, thereby solving the problem of large amount of sludge storage.

[0004] The above device has formed a certain application basis in the treatment of non-ferrous metal smelting waste acid by using jarosite residue and calcium carbide slag to fix arsenic. The existing technical solutions are usually based on the oxidation adsorption cooperation mechanism, and the mixture of jarosite residue and potassium permanganate is mixed with waste acid by mechanical stirring equipment, and air oxidation is used to realize the form conversion and fixation of arsenic. However, the above technical solutions have the following technical problems in actual industrial application:

[0005] 1. Traditional mixing devices have significant limitations in achieving uniform mixing of waste acid, slag, and air. Mechanical stirring has a weak ability to renew the gas-liquid interface and a low oxygen mass transfer rate, resulting in a slow oxidation process. It requires continuous aeration and stirring for up to 24 hours, leading to high energy consumption and long-term operation, resulting in low treatment efficiency. At the same time, the mixed slag powder of potassium ferric sulfate slag will settle or agglomerate due to density differences, causing uneven local oxidation distribution in the reaction system, affecting the adsorption capacity and stability of arsenic.

[0006] 2. In the existing process, the addition of mixed slag powder of potassium ferrous sulfate slag and potassium permanganate depends on manual proportioning and step-by-step addition. There are many manual operation steps, poor process controllability, and it is difficult to adapt to the fluctuation of waste acid composition and the need for continuous treatment. Summary of the Invention

[0007] To address the aforementioned issues, a waste treatment device for the comprehensive utilization of iron ore slag is provided. Through a circulating oxidation and stirring device, the efficiency and effectiveness of treating acidic waste liquid can be effectively improved, while saving manpower.

[0008] To address the problems of existing technologies, this invention provides a waste treatment device for the comprehensive utilization of iron ore slag, comprising a circulating oxidation stirring device installed on a waste liquid mixing tank. The circulating oxidation stirring device includes a flow mixing pipe installed inside the waste liquid mixing tank. A circulating oxygenation pipe is installed at the inlet end of the flow mixing pipe. The circulating oxygenation pipe is used to inject air into the flowing waste acid liquid. The inlet end of the circulating oxygenation pipe is connected to the bottom of the waste liquid mixing tank. A circulating delivery pump and a solenoid valve are installed on the circulating oxygenation pipe. The circulating delivery pump provides suction force for the circulating oxygenation pipe.

[0009] Preferably, the interior of the flow mixing tube is provided with drive blades, and the flow mixing tube is provided with multiple stirring rods and stirring blades, and the stirring rods are provided with multiple diffusion holes.

[0010] Preferably, the inner wall of the circulating oxygenation pipe has multiple spiral guide vanes evenly distributed, and the inner wall of the circulating oxygenation pipe also has multiple air delivery holes evenly distributed. An air guide sleeve is installed on the outer side of the circulating oxygenation pipe to guide the airflow to the air delivery holes.

[0011] Preferably, the circulating oxidation stirring device further includes multiple adaptive mixing and feeding devices. The adaptive mixing and feeding device includes an assembled shell, a mixing wheel is installed inside the assembled shell, a main flow hole is provided at the axial position of the mixing wheel, multiple metering grooves are provided on the outer side of the mixing wheel, a rotating extrusion wheel is also installed on the side of the mixing wheel, and a feed pipe is installed on the top of the assembled shell.

[0012] Preferably, the inside of the assembled shell is provided with a mixing flow guide rail, the upper part of the mixing flow guide rail is provided with a feeding port, the inside of the mixing flow guide rail is provided with a first annular baffle plate and a second annular baffle plate, the first annular baffle plate and the second annular baffle plate are both provided with area flow holes, and the second annular baffle plate is further provided with a one-way flow resistance port.

[0013] Preferably, the inside of the one-way flow resistance port is mounted with a flow installation plate, the flow installation plate is provided with a one-way flow hole, and the inside of the one-way flow resistance port is further mounted with a floating film.

[0014] Preferably, each quantitative groove of the mixing wheel is mounted with a quantitative adjusting device, the quantitative adjusting device is used for adjusting the capacity of the quantitative groove, the main flow hole of the mixing wheel is mounted with a mixing blade, and the mixing blade makes the waste acid liquid generate spiral flow.

[0015] Preferably, a plurality of movable push plates are mounted on the rotating extrusion wheel, a push spring is mounted between the movable push plate and the rotating extrusion wheel, an extrusion device is further mounted on the movable push plate, and an extrusion roller matched with the quantitative groove is mounted on the extrusion device.

[0016] Preferably, a rotating wheel is rotatably mounted on the feeding pipe, and a plurality of stirring blades are arranged in the rotating wheel.

[0017] Preferably, a one-way filter pipe is mounted at the liquid outlet end of the mixing flow guide rail, a conical filter layer is arranged in the one-way filter pipe, and a movable sealing plug is further mounted in the one-way filter pipe, and a reset spring is mounted between the movable sealing plug and the one-way filter pipe.

[0018] The beneficial effects of the present application compared with the prior art are:

[0019] 1. By introducing a circulating oxygenation pipe, combining a circulating delivery pump and an electromagnetic valve, the present application realizes continuous and efficient mixing of waste acid liquid and air. The circulating oxygenation pipe directly mixes air into the flowing waste acid liquid, significantly enhancing the renewal capacity of the gas-liquid interface and improving the oxygen mass transfer rate. This design not only accelerates the oxidation process, but also ensures that the arsenic form conversion and fixation in the waste acid liquid are more rapid and complete. At the same time, the flow mixing pipe rotates under the action of fluid dynamics, further enhancing the mixing uniformity of the waste acid liquid, avoiding the sedimentation or agglomeration of yellow potassium iron alum slag mixed slag powder, and thus improving the adsorption capacity and stability of arsenic.

[0020] 2. Traditional stirring devices rely on long-term continuous stirring, resulting in high energy consumption and low processing efficiency. However, the present application effectively shortens the time required for the oxidation process and reduces energy consumption through a circulating oxidation stirring mechanism. At the same time, due to the improvement of mixing uniformity, the arsenic form conversion in the reaction system is more efficient, thereby improving the overall processing efficiency. This not only helps to reduce production costs, but also enhances the industrial application feasibility of the equipment.

[0021] 3. The integrated adaptive mixing device in the application realizes the stable proportional mixing of jarosite mixed slag powder and potassium permanganate and waste acid liquid through the cooperation of the synchronous driving device and the flow rate sensor. This design reduces the manual operation link and improves the controllability and adaptability of the process. Regardless of the flow rate of the waste acid liquid, the adaptive mixing device can adjust the rotating speed of the mixing wheel according to the real-time monitoring data, ensuring the accurate addition of the mixed slag powder and potassium permanganate. This not only improves the stability of the treatment process, but also provides strong support for the continuous treatment requirements. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view of a waste treatment equipment for comprehensive utilization of jarosite slag according to the application.

[0023] Figure 2 is a plane cross-sectional view of a waste treatment equipment for comprehensive utilization of jarosite slag according to the application.

[0024] Figure 3 is a plane cross-sectional view of a waste treatment equipment for comprehensive utilization of jarosite slag according to the application.

[0025] Figure 4 is Figure 3 is a partial enlarged view of A in

[0026] Figure 5 is a perspective view of an adaptive mixing device in a waste treatment equipment for comprehensive utilization of jarosite slag according to the application.

[0027] Figure 6 is a front view of an adaptive mixing device in a waste treatment equipment for comprehensive utilization of jarosite slag according to the application.

[0028] Figure 7 is Figure 6 is a plane cross-sectional view of B-B section in

[0029] Figure 8 is an exploded view of an adaptive mixing device in a waste treatment equipment for comprehensive utilization of jarosite slag according to the application. Figure 1 .

[0030] Figure 9 is Figure 8 is a partial enlarged view of C in

[0031] Figure 10 is an exploded view of an adaptive mixing device in a waste treatment equipment for comprehensive utilization of jarosite slag according to the application. Figure 2 .

[0032] Figure 11 isFigure 10 Close-up view at D.

[0033] Reference numerals in the figures are:

[0034] 1, waste liquid mixing barrel; 2, flow mixing pipe; 21, driving blade; 22, stirring rod; 23, stirring blade; 3, circulating oxygenation pipe; 31, circulating delivery pump; 32, electromagnetic valve; 33, spiral guide vane; 34, air inlet; 35, air guide sleeve; 4, self-adaptive mixing feeding device; 41, assembled shell; 411, mixing guide rail; 412, first annular baffle; 4121, area flow-through hole; 413, second annular baffle; 4131, one-way flow resistance port; 4132, flow-through mounting plate; 4133, floating film; 42, mixing wheel; 421, main flow hole; 422, quantitative groove; 423, quantitative adjusting means; 424, mixing vane; 43, rotating extrusion wheel; 431, movable push plate; 4311, push spring; 432, extrusion means; 4321, extrusion roller; 44, feeding pipe; 441, rotating wheel; 442, material pushing blade; 45, one-way filter pipe; 451, cleaning port; 452, conical filter layer; 453, reset spring; 454, movable blocking plug; 46, synchronous driving device. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application will be described in further detail below in combination with the drawings and specific embodiments.

[0036] Reference Figures 1 to 11 As shown in the drawings, a waste treatment equipment for comprehensive utilization of jarosite slag includes a circulating oxidation stirring device installed on a waste liquid mixing barrel 1, the circulating oxidation stirring device includes a flow mixing pipe 2 installed inside the waste liquid mixing barrel 1, a circulating oxygenation pipe 3 is installed at the liquid inlet end of the flow mixing pipe 2, the circulating oxygenation pipe 3 is used for injecting air into the flowing waste acid, the liquid inlet end of the circulating oxygenation pipe 3 is in communication with the bottom of the waste liquid mixing barrel 1, a circulating delivery pump 31 and an electromagnetic valve 32 are installed on the circulating oxygenation pipe 3, and the circulating delivery pump 31 provides suction force for the circulating oxygenation pipe 3.

[0037] A plurality of electromagnetic valves 32 are also installed on the circulating oxygenation pipe 3. The circulating oxygenation pipe 3 is connected with an air delivery pump.

[0038] The liquid inlet end of the flow mixing pipe 2 is connected with a circulating oxygenation pipe 3, which is used to mix air into the flowing waste acid liquid. The liquid inlet end of the circulating oxygenation pipe 3 is directly connected with the bottom of the waste liquid mixing bucket 1, which ensures that the bottom layer of the waste acid liquid can be pumped. On the circulating oxygenation pipe 3, a circulating pump 31 and an electromagnetic valve 32 are installed. The circulating pump 31 provides the necessary suction force to drive the circulation of the waste acid liquid in the pipe, and the electromagnetic valve 32 is used to adjust the flow state of the pipe. In addition, the circulating oxygenation pipe 3 is also connected with a gas delivery pump, which is responsible for delivering air into the circulating oxygenation pipe 3.

[0039] When the device is running, the workers first mix the mixed slag powder of yellow potassium jarosite slag and potassium permanganate with the waste acid liquid in proportion, and then deliver them into the waste liquid mixing bucket 1. Subsequently, by opening the electromagnetic valve 32 on the circulating oxygenation pipe 3 and starting the circulating pump 31, the pump pumps the waste acid liquid at the bottom of the waste liquid mixing bucket 1 into the circulating oxygenation pipe 3 through its suction force. In the process of the waste acid liquid flowing through the circulating oxygenation pipe 3, the air delivered by the gas delivery pump is mixed into it, forming a gas-liquid mixture.

[0040] At the same time, due to the flow of the waste acid liquid in the circulating oxygenation pipe 3, the flow mixing pipe 2 is subjected to fluid dynamic action and generates self-rotation. This self-rotation not only enhances the mixing effect of the waste acid liquid inside the flow mixing pipe 2, but also spreads the waste acid liquid containing air to the entire system of the waste liquid mixing bucket 1 through its stirring action. After the air enters the waste liquid mixing bucket 1, it will naturally flow upward due to the density difference, further promoting the uniform contact between the waste acid liquid and the air, thereby significantly improving the treatment efficiency of the waste acid liquid.

[0041] The electromagnetic valve 32 and the gas delivery pump are prior art and will not be described here.

[0042] Referring to Figures 1 to 3 As shown in the figure, the inside of the flow mixing pipe 2 is provided with a driving blade 21, and the flow mixing pipe 2 is provided with a plurality of stirring rods 22 and stirring blades 23, and the stirring rod 22 is further provided with a plurality of diffusion holes.

[0043] The flow mixing pipe 2 is installed inside the waste liquid mixing bucket 1. The inside of the flow mixing pipe 2 is designed with a driving blade 21, which can respond to the fluid dynamic force flowing through the surface. In addition, the outer wall of the flow mixing pipe 2 is also provided with a plurality of stirring rods 22 and stirring blades 23, and the stirring rod 22 is further provided with a plurality of diffusion holes, which can optimize the diffusion and mixing effect of the waste acid liquid.

[0044] When the device starts running, the circulating oxygen-increasing pipe 3, under the suction force of the circulating conveying pump 31, sucks the waste liquid mixed in the bottom of the waste liquid mixing barrel 1 and conveys it into the flow mixing pipe 2. When the waste liquid flows through the driving blades 21, the driving blades 21 will be subjected to force due to the change of flow rate and the impact force of the fluid, and start to rotate. This rotating motion immediately drives the entire flow mixing pipe 2 to rotate in the waste liquid mixing barrel 1.

[0045] With the rotation of the flow mixing pipe 2, the stirring rod 22 and the stirring blades 23 also move, stirring the surrounding waste liquid. The design of the stirring blades 23 enables them to effectively cut, fold and redistribute the waste liquid, thereby enhancing the degree of turbulence inside the waste liquid and promoting the dispersion of solid particles such as mixed slag powder and potassium permanganate in the waste liquid.

[0046] At the same time, the diffusion holes on the stirring rod 22 allow the waste liquid to pass during stirring. The presence of diffusion holes not only increases the flow path of the waste liquid, but also promotes the uniform distribution of the waste liquid in the mixing barrel. When the waste liquid is sprayed out of the diffusion holes, it forms tiny droplets or streams, further enhancing the contact area between the waste liquid and air, which is beneficial to the dissolution of oxygen in the air into the waste liquid, improving the oxidation efficiency.

[0047] Referring to Figures 1 to 4 As shown, the inner wall of the circulating oxygen-increasing pipe 3 is evenly distributed with a plurality of spiral guide vanes 33, and the inner wall of the circulating oxygen-increasing pipe 3 is also evenly distributed with a plurality of air inlet holes 34. The outer side of the circulating oxygen-increasing pipe 3 is provided with an air guide sleeve 35, which is used to guide the air flow to the air inlet holes 34.

[0048] The air guide sleeve 35 is connected with the air inlet pump. The circulating oxygen-increasing pipe 3 is used to mix air into the flowing waste liquid efficiently. The inner wall of the circulating oxygen-increasing pipe 3 is evenly distributed with a plurality of spiral guide vanes 33, which guide the waste liquid to rotate spirally in the pipe. At the same time, the inner wall of the circulating oxygen-increasing pipe 3 is also evenly distributed with a plurality of air inlet holes 34, which are used to introduce external air into the waste liquid.

[0049] In order to realize the introduction of air, the outer side of the circulating oxygen-increasing pipe 3 is provided with an air guide sleeve 35, which is connected with the air inlet pump. When the device is running, the air inlet pump is started and air is pumped into the air guide sleeve 35. Then, under the guidance of the air guide sleeve 35, the air uniformly flows to each air inlet hole 34 of the circulating oxygen-increasing pipe 3 and is injected into the circulating waste liquid.

[0050] In the process of the waste liquid flowing through the circulating oxygenation pipe 3, the waste liquid is affected by the spiral guide vane 33, generating spiral rotation. This rotation not only enhances the degree of turbulence inside the waste liquid, but also promotes the sufficient contact and mixing between the waste liquid and the air entering through the air inlet hole 34. Due to the synergistic effect of spiral rotation and air input, the air is uniformly dispersed in the waste liquid, thereby ensuring the uniformity of the gas-liquid mixture.

[0051] Referring to Figures 1 to 8 As shown in the figure, the circulating oxidation stirring device also includes a plurality of adaptive mixing feeding devices 4, which include an assembled shell 41, the inside of which is installed with a mixing wheel 42, the center of the shaft of which is provided with a main flow hole 421, the outside of which is provided with a plurality of quantitative grooves 422, and the side of the mixing wheel 42 is also installed with a rotating extrusion wheel 43, and the upper part of the assembled shell 41 is installed with a feeding pipe 44.

[0052] The plurality of adaptive mixing feeding devices 4 are in communication with each other, and the liquid outlet of the assembled shell 41 is in communication with the circulating oxygenation pipe 3. The adaptive mixing feeding device 4 also includes a synchronous driving device 46 installed on the assembled shell 41, and the driving end of the synchronous driving device 46 is in transmission connection with the mixing wheel 42, the rotating extrusion wheel 43 and the feeding pipe 44 respectively. The synchronous driving device 46 also includes a flow rate sensor installed on the assembled shell 41.

[0053] The waste liquid enters the inside of the assembled shell 41 through the conveying pipe, and the flow rate sensor monitors the flow rate of the waste liquid in real time. When the flow rate sensor detects the flow of the waste liquid, the synchronous driving device 46 starts to drive the mixing wheel 42, the rotating extrusion wheel 43 and the feeding pipe 44 to rotate synchronously. The main flow hole 421 of the mixing wheel 42 is used for the flow of the waste liquid, and the plurality of quantitative grooves 422 on the outside are used for temporarily storing and releasing the mixed slag powder or potassium permanganate. When the quantitative groove 422 moves below the feeding pipe 44, the feeding pipe 44 delivers the mixed slag powder or potassium permanganate into the quantitative groove 422 through rotation. As the mixing wheel 42 continues to rotate, the mixed slag powder or potassium permanganate in the quantitative groove 422 is carried away by the waste liquid, realizing the mixing with the waste liquid. The rotating extrusion wheel 43 rotates synchronously, extruding the quantitative groove 422 outside the mixing wheel 42 to remove the excess waste liquid therein, ensuring that the quantitative groove 422 can better accept the subsequent mixed slag powder or potassium permanganate. The synchronous driving device 46 adjusts the rotation speed of the mixing wheel 42 according to the flow rate of the waste liquid, so as to realize stable proportional mixing.

[0054] The stable proportional mixing of the mixed slag powder of jarosite slag and potassium permanganate with the waste liquid is realized, the manual operation link is reduced, and the process controllability and adaptability are improved.

[0055] The synchronous driving device 46 is an existing transmission technology which is not described here.

[0056] Referring to Figures 5 to 10 As shown, the inside of the assembled shell 41 is provided with a mixing flow guide rail 411, the upper part of the mixing flow guide rail 411 is provided with a feeding port, the inside of the mixing flow guide rail 411 is provided with a first annular blocking plate 412 and a second annular blocking plate 413, the first annular blocking plate 412 and the second annular blocking plate 413 are both provided with area flow-through holes 4121, and the second annular blocking plate 413 is further provided with a one-way flow blocking port 4131.

[0057] The assembled shell 41 is detachable, which is convenient for the staff to maintain the devices inside the assembled shell 41.

[0058] The polluted acid waste liquid enters the mixing flow guide rail 411 of the assembled shell 41 through the conveying pipeline. The mixing wheel 42 rotates under the driving of the synchronous driving device 46, and the quantitative groove 422 moves with the rotation of the mixing wheel 42. When the quantitative groove 422 moves to the area flow-through hole 4121 between the first annular blocking plate 412 and the second annular blocking plate 413, the flowing polluted acid waste liquid enters the quantitative groove 422 through the area flow-through hole 4121, and the mixed slag powder or potassium permanganate in the quantitative groove 422 is washed away, realizing the mixing with the polluted acid waste liquid. The design of the first annular blocking plate 412 and the second annular blocking plate 413 effectively blocks both ends of the quantitative groove 422, preventing the polluted acid waste liquid from flowing out when the quantitative groove 422 is not completely filled or the mixed slag powder / potassium permanganate is not completely released.

[0059] With the continuous rotation of the mixing wheel 42, the quantitative groove 422 moves to the position in contact with the rotating extrusion wheel 43. The rotating extrusion wheel 43 extrudes the quantitative groove 422, extruding the excess polluted acid waste liquid therein through the one-way flow blocking port 4131, ensuring that the quantitative groove 422 can better accept the subsequent mixed slag powder or potassium permanganate. The synchronous driving device 46 adjusts the rotation speed of the mixing wheel 42 according to the flow rate of the polluted acid waste liquid monitored by the flow rate sensor, so as to realize stable proportioning and mixing.

[0060] Referring to Figure 8 and Figure 9 As shown, the inside of the one-way flow blocking port 4131 is installed with a flow-through mounting plate 4132, the flow-through mounting plate 4132 is provided with a one-way flow-through hole, and the inside of the one-way flow blocking port 4131 is further installed with a floating film 4133.

[0061] The one-way flow blocking port 4131 is internally designed with a flow installation plate 4132, and a one-way flow hole is formed on the flow installation plate 4132 to guide the discharge of the squeezed waste acid liquid. In addition, the one-way flow blocking port 4131 is internally equipped with a floating film 4133. During operation, when the quantitative groove 422 is squeezed by the rotating squeezing wheel 43, the excess waste acid liquid in the quantitative groove 422 is forced to discharge through the one-way flow blocking port 4131. At this time, the waste acid liquid flows out smoothly through the one-way flow hole on the flow installation plate 4132. Importantly, when the waste acid liquid in the mixed flow guide rail 411 attempts to backflow through the one-way flow hole, the floating film 4133 will float in response to the fluid pressure, tightly adhere to the surrounding of the flow hole, effectively block the one-way flow hole, thereby preventing the reverse flow of the waste acid liquid.

[0062] Referring to Figures 7 to 10 As shown, the quantitative adjusting device 423 is installed in each quantitative groove 422 of the mixing wheel 42, and the quantitative adjusting device 423 is used to adjust the capacity of the quantitative groove 422. The mixed flow blade 424 is installed in the main flow hole 421 of the mixing wheel 42, and the mixed flow blade 424 causes the waste acid liquid to generate spiral flow.

[0063] The main flow hole 421 at the axial position of the mixing wheel 42 allows the waste acid liquid to flow, and the mixed flow blade 424 installed in the main flow hole 421 guides the waste acid liquid passing through to rotate in a spiral manner. The spiral flow pattern helps to enhance the mixing effect of the waste acid liquid and the subsequent added substances.

[0064] The mixing wheel 42 is provided with a plurality of quantitative grooves 422 on the outside, and the quantitative grooves 422 are used to temporarily store and release the mixed slag powder or potassium permanganate. In order to accurately control the capacity of the quantitative groove 422, the quantitative adjusting device 423 is installed in each quantitative groove 422. The quantitative adjusting device 423 and the quantitative groove 422 are connected in a detachable manner, which is convenient for workers to replace quantitative adjusting devices 423 of different sizes according to actual needs, so as to adjust the storage capacity of the quantitative groove 422 and realize accurate control of the mixing ratio.

[0065] When the mixing wheel 42 is rotated under the driving of the synchronous driving device 46, the quantitative groove 422 moves to the lower side of the feeding pipe 44 in turn with the rotation of the mixing wheel 42. At this time, the feeding pipe 44 accurately delivers the mixed slag powder or potassium permanganate into the quantitative groove 422 through the rotating action. With the continuous rotation of the mixing wheel 42, the mixed slag powder or potassium permanganate carried by the quantitative groove 422 is taken away by the spiral flowing waste acid liquid, so as to realize the mixing with the waste acid liquid.

[0066] Referring to Figures 8 to 11As shown, a plurality of movable push plates 431 are mounted on the rotating extrusion wheel 43, and a push spring 4311 is mounted between the movable push plate 431 and the rotating extrusion wheel 43. An extrusion device 432 is further mounted on the movable push plate 431, and an extrusion roller 4321 matching the quantitative groove 422 is mounted on the extrusion device 432.

[0067] The rotating extrusion wheel 43 rotates synchronously with the mixing wheel 42, and a plurality of movable push plates 431 are mounted on the rotating extrusion wheel 43. The movable push plate 431 is connected to the rotating extrusion wheel 43 through the push spring 4311, so that the movable push plate 431 has the ability to elastically move. The extrusion device 432 is mounted on the movable push plate 431, and the extrusion roller 4321 matching the quantitative groove 422 on the mixing wheel 42 is arranged on the extrusion device 432. During rotation, the extrusion roller 4321 periodically contacts and extrudes the quantitative groove 422 with the rotation of the rotating extrusion wheel 43. Due to the cooperation of the movable push plate 431 and the push spring 4311, the extrusion device 432 can apply appropriate pressure to the quantitative groove 422, so as to effectively extrude the excess waste acid liquid in the quantitative groove 422. This design ensures that the quantitative groove 422 can maintain the best filling state when receiving subsequent mixed slag powder or potassium permanganate, thereby improving the mixing efficiency and the matching accuracy. At the same time, the detachable connection design of the movable push plate 431 and the extrusion device 432 facilitates the adjustment and maintenance of the staff according to the actual needs.

[0068] Referring to Figures 5 to 7 As shown, the rotating wheel 441 is rotatably mounted on the feeding pipe 44, and a plurality of stirring blades 442 are arranged in the rotating wheel 441.

[0069] The feeding port of the assembled shell 41 is in communication with the feeding pipe 44, and the rotating wheel 441 is rotatably mounted on the feeding pipe 44. The feeding pipe 44 is used to connect the storage area of the mixed slag powder or potassium permanganate, so as to realize continuous material conveying. Inside the feeding pipe 44, the rotating wheel 441 is arranged in a rotatable state, and the internal structure of the rotating wheel 441 comprises a plurality of uniformly distributed stirring blades 442.

[0070] When the mixing wheel 42 rotates under the driving of the synchronous driving device 46, the synchronous driving device 46 simultaneously drives the rotating wheel 441 on the feeding pipe 44 to rotate synchronously. The stirring blades 442 in the rotating wheel 441 move with the rotation of the rotating wheel 441, and the stirring blades 442 effectively stir the mixed slag powder or potassium permanganate in the feeding pipe 44, so as to ensure that the material can flow uniformly and stably to the mixing wheel 42 and contact the mixing wheel 42. The material is prevented from being blocked during feeding, and the continuity and uniformity of feeding are ensured, so as to optimize the material matching and mixing efficiency in the whole waste treatment process.

[0071] Referring to Figures 5 to 7As shown, the outlet end of the mixed flow guide rail 411 is provided with a one-way filter pipe 45, the inside of which is provided with a conical filter layer 452, and the inside of the one-way filter pipe 45 is further provided with a movable sealing plug 454, between which and the one-way filter pipe 45 a return spring 453 is arranged.

[0072] The outlet end of the mixed flow guide rail 411 is provided with a one-way filter pipe 45, the inside of which is provided with a conical filter layer 452, and the inside of the one-way filter pipe 45 is further provided with a movable sealing plug 454, between which and the one-way filter pipe 45 a return spring 453 is arranged.

[0073] In the process of introducing the waste acid liquid into the one-way filter pipe 45 through the mixed flow guide rail 411, the conical filter layer 452 first plays its filtering role, intercepting and retaining large-particle impurities. Subsequently, the waste liquid continues to advance, acting on the movable sealing plug 454, overcoming the pre-tightening force of the return spring 453, so that the movable sealing plug 454 is temporarily opened to allow the waste liquid to pass. In this process, the return spring 453 is in a compressed state. Once the delivery of the waste acid liquid is terminated, the movable sealing plug 454 is quickly reset under the elastic force of the return spring 453, effectively preventing the backflow of the waste liquid or the filtered impurities, thereby ensuring the one-way flow characteristics of the one-way filter pipe 45 and the stability and efficiency of the whole system.

[0074] Specific working principle:

[0075] The inlet end of the flow mixing pipe 2 is connected with a circulating oxygenation pipe 3, which is used to effectively mix air into the flowing waste acid liquid. The inlet end of the circulating oxygenation pipe 3 is directly connected with the bottom of the waste liquid mixing barrel 1, ensuring that the bottom layer of waste acid liquid can be extracted. On the circulating oxygenation pipe 3, a circulating delivery pump 31 and an electromagnetic valve 32 are arranged, the circulating delivery pump 31 provides the necessary suction force to drive the circulation of the waste acid liquid in the pipeline, and the electromagnetic valve 32 is used to adjust the flow state of the pipeline. In addition, the circulating oxygenation pipe 3 is connected with a gas delivery pump, which is responsible for delivering air into the circulating oxygenation pipe 3.

[0076] When the device is in operation, the workers first proportionally mix the mixed slag powder of jarosite slag and potassium permanganate with the waste acid liquid, and then deliver them into the waste liquid mixing barrel 1. Subsequently, by opening the electromagnetic valve 32 on the circulating oxygenation pipe 3, the circulating delivery pump 31 is started, and the pump sucks the waste acid liquid at the bottom of the waste liquid mixing barrel 1 into the circulating oxygenation pipe 3 through its suction force. In the process of the waste acid liquid flowing through the circulating oxygenation pipe 3, the air delivered by the air delivery pump is mixed into the waste acid liquid to form a gas-liquid mixture.

[0077] At the same time, due to the flow of the waste acid liquid in the circulating oxygenation pipe 3, the flow mixing pipe 2 is subjected to hydrodynamic action to generate self-rotation. This self-rotation movement not only enhances the mixing effect of the waste acid liquid inside the flow mixing pipe 2, but also diffuses the waste acid liquid containing air to the entire system of the waste liquid mixing barrel 1 through its stirring action. After the air enters the waste liquid mixing barrel 1, it will naturally flow upward due to the density difference, further promoting the uniform contact of the waste acid liquid with the air, thereby significantly improving the treatment efficiency of the waste acid liquid.

[0078] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the protection scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A waste treatment apparatus for comprehensive utilization of jarosite slag, comprising a circulating oxidation stirring device installed on a waste liquid mixing bucket (1), characterized in that, The circulating oxidation stirring device comprises a flow mixing pipe (2) installed in the inside of a waste liquid mixing barrel (1), an air injection pipe (3) is installed at the liquid inlet end of the flow mixing pipe (2), the air injection pipe (3) is used for injecting air into the flowing waste acid liquid, the liquid inlet end of the air injection pipe (3) is communicated with the bottom of the waste liquid mixing barrel (1), a circulating delivery pump (31) and an electromagnetic valve (32) are installed on the air injection pipe (3), and the circulating delivery pump (31) provides suction force for the air injection pipe (3); The inside of the flow mixing pipe (2) is provided with a driving blade (21), a plurality of stirring rods (22) and stirring blades (23) are arranged on the flow mixing pipe (2), and a plurality of diffusion holes are arranged on the stirring rod (22); The circulating oxidation stirring device further comprises a plurality of self-adaptive mixing feeding devices (4), the self-adaptive mixing feeding device (4) comprises a spliced shell (41), a mixing wheel (42) is installed in the inside of the spliced shell (41), a main flow hole (421) is arranged at the shaft center position of the mixing wheel (42), a plurality of quantitative grooves (422) are arranged on the outside of the mixing wheel (42), the quantitative grooves (422) are used for temporarily storing and releasing the mixed slag powder of the jarosite slag, a rotating extrusion wheel (43) is further installed beside the mixing wheel (42), and a feeding pipe (44) is installed above the spliced shell (41); The inside of the spliced shell (41) is provided with a mixing flow guide track (411), the top of the mixing flow guide track (411) is provided with a feeding port, the inside of the mixing flow guide track (411) is provided with a first annular baffle (412) and a second annular baffle (413), the first annular baffle (412) and the second annular baffle (413) are both provided with a regional flow-through hole (4121), and the second annular baffle (413) is further provided with a one-way flow resistance port (4131); The synchronous driving device (46) is further installed on the spliced shell (41), and the driving end of the synchronous driving device (46) is in transmission connection with the mixing wheel (42), the rotating extrusion wheel (43) and the feeding pipe (44) respectively; When the quantitative groove (422) moves to the regional flow-through hole (4121) between the first annular baffle (412) and the second annular baffle (413), the flowing waste acid liquid enters the quantitative groove (422) through the regional flow-through hole (4121), and the mixed slag powder in the quantitative groove (422) is washed away, so that the mixed slag powder is mixed with the waste acid liquid.

2. The waste treatment apparatus for comprehensive utilization of jarosite slag according to claim 1, characterized by A plurality of spiral flow guide leaves (33) are distributed at equal intervals on the inner wall of the air injection pipe (3), a plurality of air supply holes (34) are uniformly distributed on the inner wall of the air injection pipe (3), and an air guide sleeve (35) is installed on the outside of the air injection pipe (3), the air guide sleeve (35) is used for guiding the airflow to flow to the air supply hole (34).

3. The waste treatment apparatus for comprehensive utilization of jarosite slag according to claim 2, characterized by The inside of the one-way flow resistance port (4131) is provided with a flow-through mounting plate (4132), the flow-through mounting plate (4132) is provided with a one-way flow-through hole, and the inside of the one-way flow resistance port (4131) is further provided with a floating film (4133).

4. The waste treatment apparatus for comprehensive utilization of jarosite slag according to claim 1, characterized by A plurality of movable push plates (431) are mounted on the rotating extrusion wheel (43), and a push spring (4311) is mounted between the movable push plate (431) and the rotating extrusion wheel (43), and an extrusion tool (432) is further mounted on the movable push plate (431), and an extrusion roller (4321) matched with the quantitative groove (422) is mounted on the extrusion tool (432).

5. The waste treatment apparatus for comprehensive utilization of jarosite slag according to claim 1, characterized by A rotating wheel (441) is rotatably mounted on the feeding pipe (44), and a plurality of stirring blades (442) are arranged in the rotating wheel (441).

6. The waste treatment apparatus for comprehensive utilization of jarosite slag according to claim 1, characterized by A one-way filter pipe (45) is mounted at the liquid outlet of the mixed flow guide rail (411), a conical filter layer (452) is arranged in the one-way filter pipe (45), and a movable blocking plug (454) is further mounted in the one-way filter pipe (45), and a reset spring (453) is mounted between the movable blocking plug (454) and the one-way filter pipe (45).

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