An apparatus for treating zinc sulfate solution purification residue

Abstract

The application discloses a kind of equipment for treating zinc sulfate solution purification after slag, it is related to zinc sulfate solution purification after slag processing technical field, including solute container, the solute container is provided with purification after slag storage ware, driving element and heat preservation cover body, the top of the purification after slag storage ware is set to be open, and the purification after slag storage ware vertically slides in the solute container.The application stores purification after slag by purification after slag storage ware, which helps to store and replenish purification after slag, then by the cooperation of incomplete gear roller and straight tooth groove, drive purification after slag storage ware to move upward to the top, and then fall down instantly, so that purification after slag and the liquid in purification after slag storage ware contact in the form of downward floating, while the setting of buffer mechanism, load bearing bottom plate, overflow hole and stirrer on it further strengthens the contact time and area of purification after slag and the liquid in purification after slag storage ware, thereby accelerating leaching efficiency.

Description

Technical Field

[0001] This invention relates to the field of zinc sulfate solution purification residue treatment technology, and in particular to a device for treating zinc sulfate solution purification residue. Background Technology

[0002] In the purification process of hydrometallurgical zinc refining, zinc powder is usually used as a reducing agent to remove impurities such as copper, cadmium, cobalt, and nickel from the zinc sulfate solution in order to meet the quality requirements of the zinc sulfate solution in the electrowinning process.

[0003] Reference Figure 1 The existing method for treating the residue after purification of zinc sulfate solution involves the following steps:

[0004] S1. The purified residue is slurried with water to obtain a slurry. The purified residue and water are slurried at a solid-liquid ratio of 1:4.

[0005] S2. While stirring, dilute sulfuric acid and the residue after the second stage of purification are added to the slurry in sequence for leaching treatment in order to obtain the leached liquid.

[0006] S3. The leaching solution is subjected to pressure filtration to obtain a filtrate containing zinc ions and a filter residue containing metallic copper, cadmium, cobalt and nickel.

[0007] However, during the implementation of the above method, the leaching efficiency of the purified residue is low when stirred in S1 and S2. This is mainly because the purified residue settles at the bottom, and stirring makes it difficult for the purified residue to fully contact with water or dilute sulfuric acid, thus affecting the leaching efficiency. Summary of the Invention

[0008] The purpose of this invention is to solve the problem in the prior art that it is difficult to make the purified residue fully contact with water or dilute sulfuric acid through stirring, and to propose a device for treating the residue after zinc sulfate solution purification.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A device for treating the residue after purification of zinc sulfate solution includes a solute container, wherein the solute container is provided with:

[0011] A purified residue storage container, wherein the top of the purified residue storage container is open and the purified residue storage container slides vertically inside the solute container;

[0012] A driving component drives the purified sludge storage container to move vertically upward to the top, and then the purified sludge storage container moves rapidly downward under the action of gravity.

[0013] An insulated cover is sealed to the top of the solute container.

[0014] Preferably, the driving element includes

[0015] The straight toothed groove is in two sets, and the two sets of straight toothed grooves are symmetrically arranged on opposite sides of the purified residue storage device.

[0016] An incomplete gear roller, comprising a central shaft and a gear disk, wherein the outer wall of the gear disk is provided with fan-shaped toothed grooves that mesh with straight toothed grooves, the incomplete gear roller rotating within the solute container and meshing with the straight toothed grooves.

[0017] Preferably, the bottom of the purified slag storage container is provided with a buffer mechanism for buffering the purified slag storage container after it moves rapidly downward.

[0018] Preferably, the buffer mechanism includes:

[0019] A boss structure is provided at the bottom of the purified residue storage container, and the outer surface of the boss structure is inclined.

[0020] A buffer base, wherein a buffer groove is provided on the top of the buffer base, and the shape of the buffer groove is the same as the outer surface of the boss structure.

[0021] Preferably, the center of the boss structure is provided with a solution inlet.

[0022] Preferably, a buffer protrusion is provided at the bottom of the buffer tank, and the outer diameter of the buffer protrusion is the same as the inner diameter of the solution inlet.

[0023] Preferably, the top surface of the buffer protrusion is higher than the top surface of the buffer base.

[0024] Preferably, the bottom of the purified residue storage container is provided with a load-bearing base plate, and the load-bearing base plate is provided with an overflow hole.

[0025] Preferably, a stirrer is rotatably connected to the load-bearing base plate. The stirrer includes a connecting ring and multiple stirring blades, and the stirring blades are fixed to the outer surface of the connecting ring.

[0026] Preferably, the bottom of the heat-insulating cover is connected to a guide shaft, the outer surface of the guide shaft is provided with at least two sets of spiral slides, the inner sidewall of the connecting ring is fixed with sliding protrusions corresponding to the spiral slides, and all the sliding protrusions are located in the same plane;

[0027] The guide shaft is provided with a flow channel, and the outer wall of the guide shaft is provided with a plurality of flow ports, and the flow ports are connected to the flow channel.

[0028] Compared with the prior art, the beneficial effects of this invention are as follows:

[0029] 1. The present invention uses a post-purification residue storage device to store post-purification residue, which helps in the storage and replenishment of post-purification residue. Then, the post-purification residue storage device is driven to move upward to the top by a driving component and then falls downward instantly, so that the post-purification residue comes into contact with the liquid in the post-purification residue storage device in a downward floating manner.

[0030] 2. The present invention can buffer the liquid after the purified residue storage container falls instantly by setting up a buffer mechanism, that is, the buffering effect is achieved by squeezing the liquid between the protruding structure and the buffer base.

[0031] 3. The present invention utilizes the overflow hole provided on the load-bearing base plate. When the load-bearing base plate moves downward in the sealed purified residue storage container, it generates a "reverse" fluid that moves upward relative to the load-bearing base plate. This "reverse" fluid hinders the downward drift speed of the purified residue, thereby further enhancing the reaction time and area between the purified residue and the liquid.

[0032] 4. The present invention, through the cooperation of the limiting protrusion and the solution inlet, when the limiting protrusion moves into the solution inlet, increases the water pressure under the load-bearing base plate, thereby further hindering the downward movement of the load-bearing base plate, and further enhancing the reaction time between the purified residue and the liquid.

[0033] 5. The present invention also utilizes the structure of the agitator so that when the load-bearing base plate moves downward, it drives the agitator blades to rotate. The rotating agitator blades hinder the downward sinking speed of the purified residue on the load-bearing base plate, thereby generating a swirling flow, which further enhances the reaction time and reaction area between the purified residue and the liquid.

[0034] 6. The present invention also facilitates the injection of dilute sulfuric acid into the liquid in the purified residue storage container by setting a guide channel and a guide port in the guide shaft. In this way, the speed at which dilute sulfuric acid is uniformly dissolved in the liquid in the purified residue storage container can be accelerated, thereby accelerating the leaching efficiency. Attached Figure Description

[0035] Figure 1 This invention relates to a conventional method for treating the residue after purification of zinc sulfate solution;

[0036] Figure 2 This is a schematic diagram of the internal structure of a device for treating the residue after purification of zinc sulfate solution according to the present invention.

[0037] Figure 3 This is a schematic diagram of the internal structure of the slag storage container in a zinc sulfate solution purification slag processing equipment proposed in this invention.

[0038] Figure 4This is a diagram showing the bottommost state of the slag storage container in a zinc sulfate solution purification slag treatment device proposed in this invention.

[0039] Figure 5 This is a diagram showing the state of the purified slag storage container at the top of a device for treating purified slag from zinc sulfate solution, as proposed in this invention.

[0040] Figure 6 This is a structural diagram of a buffer base in a device for treating the slag after purification of zinc sulfate solution, as proposed in this invention.

[0041] Figure 7 This is a bottom structural diagram of a slag storage container in a zinc sulfate solution purification slag processing equipment proposed in this invention;

[0042] Figure 8 This is a diagram showing the connection structure between the agitator and the guide shaft in a device for treating the slag after purification of zinc sulfate solution, as proposed in this invention.

[0043] Figure 9 This is a diagram showing the internal structure of a guide shaft in a device for treating the slag after purification of zinc sulfate solution, as proposed in this invention.

[0044] In the diagram: 1. Solute container; 2. Purified residue storage container; 3. Drive component; 30. Straight tooth groove; 31. Incomplete gear roller; 4. Boss structure; 40. Solution overflow port; 5. Buffer base; 50. Buffer tank; 51. Buffer protrusion; 6. Load-bearing base plate; 60. Overflow hole; 7. Insulated cover; 8. Stirrer; 80. Connecting ring; 81. Stirring blade; 82. Sliding protrusion; 9. Guide shaft; 90. Spiral slide; 91. Guide channel; 92. Guide port. Detailed Implementation

[0045] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0046] Reference Figures 2-9 A device for treating the slag after purification of zinc sulfate solution includes a solute container 1, wherein the solute container 1 can be a box or a cylinder structure, and the solute container 1 is provided with a slag storage container 2, a driving component 3 and an insulated cover 7.

[0047] Reference Figures 2-6 The top of the purified residue storage container 2 is open, which is used to store the purified residue. The purified residue falls into the container 2 from the open top.

[0048] Reference Figures 2-5The purified residue container 2 slides vertically within the solute container 1. The preferred sliding connection method is a combination of a sliding strip and a sliding rail. In this method, the sliding rail on the inner wall of the solute container 1 is a groove extending downwards from the top of the inner wall. The sliding strip is fixed to the outer wall of the purified residue container 2. This facilitates the vertical sliding of the purified residue container 2 and allows it to be easily removed from the solute container 1. Alternatively, a sliding opening and a sliding rod can be used, where the purified residue container 2 has a sliding opening, and the solute container 1 has a sliding rod. The sliding opening slides along the outer wall of the sliding rod. The method by which the purified residue container 2 slides vertically within the solute container 1 is not limited to these two methods.

[0049] Reference Figure 5 After the driving component 3 drives the purified slag storage container 2 to move vertically upward to the top, the purified slag storage container 2 moves rapidly downward under the action of gravity. In this embodiment, the driving component 3 includes a straight tooth groove 30 and an incomplete gear roller 31, and the straight tooth groove 30 and the incomplete gear roller 31 mesh.

[0050] Reference Figures 2-7 There are two sets of straight tooth grooves 30, which are symmetrically arranged on opposite sides of the purified slag storage container 2. The straight tooth grooves 30 are driven to move vertically up and down by the rotation of the incomplete gear roller 31, which further brakes the vertical movement of the purified slag storage container 2. When the straight tooth grooves 30 disengage from the meshing of the incomplete gear roller 31, the purified slag storage container 2 moves downward instantaneously under the action of gravity.

[0051] Reference Figures 2-7 The incomplete gear roller 31 consists of a central shaft and multiple gear teeth. When the gear teeth mesh with the grooves on the straight tooth groove 30, the incomplete gear roller 31 rotates, driving the straight tooth groove 30 to move vertically. Conversely, when the gear teeth disengage from the grooves on the straight tooth groove 30, the purified residue storage container 2 moves downward under gravity. The incomplete gear roller 31 rotates within the solute container 1, and the two incomplete gear rollers 31 rotate in opposite directions to ensure that the rotation of the incomplete gear roller 31 does not generate mutually canceling driving forces in the vertical direction.

[0052] It should be added that: the two incomplete gear rollers 31 can be driven by a rotating motor that is controlled independently, or they can be driven by a single motor. When there is only one drive motor, the ends of the two incomplete gear rollers 31 that are away from the drive motor are driven by gear meshing to ensure that the two incomplete gear rollers 31 rotate in opposite directions.

[0053] Reference Figures 2-4 The heat-insulating cover 7 is sealed to the top of the solute container 1. The heat-insulating cover 7 helps to ensure that the leaching temperature in the solute container 1 is 40℃-90℃.

[0054] The functional principle of this invention can be explained through the following operational methods:

[0055] First, a section of purified residue is placed into the purified residue storage container 2. Then, the purified residue storage container 2 is placed into the solute container 1 via a slide bar and slide rail. Next, four times the volume of water is added to the solute container 1 for slurry treatment, resulting in a slurry containing the purified residue. During this process, when the gear teeth mesh with the grooves on the straight tooth groove 30, the rotation of the incomplete gear roller 31 drives the vertical movement of the straight tooth groove 30 until it reaches the top. At this point, refer to... Figure 5 Then, when the gear teeth disengage from the tooth groove on the straight tooth groove 30, the purified residue storage container 2, which has moved to the top, moves downward instantly under the action of gravity. Among them, a section of purified residue in the purified residue storage container 2 floats downward slowly relative to the purified residue storage container 2, and the section of purified residue fully contacts the water, thereby accelerating the leaching speed.

[0056] Next, a dilute sulfuric acid solution was added to the slurry for leaching, followed by the weighed residue from the second stage of purification. The mixture was then stirred for 2 hours, with the final leaching pH value reaching 5.0. During this process, when the gear teeth mesh with the grooves on the straight tooth groove 30, the rotation of the incomplete gear roller 31 drives the vertical movement of the straight tooth groove 30 until it reaches the top. At this point, refer to... Figure 5 Then, when the gear teeth disengage from the tooth groove on the straight tooth groove 30, the purified residue storage container 2, which has moved to the top, moves downward instantly under the action of gravity. The second-stage purified residue in the purified residue storage container 2 floats downward slowly relative to the purified residue storage container 2. The second-stage purified residue comes into full contact with the dilute sulfuric acid solution, thereby accelerating the leaching speed.

[0057] Finally, the filtrate obtained from the purified residue storage container 2 was filtered using a chamber filter press. The filtrate had a higher cadmium content than the neutral supernatant, while the contents of other impurities were lower than the supernatant quality standard. The main metal zinc was effectively separated from the impurities copper, cadmium, cobalt, and nickel.

[0058] In this embodiment, a buffer mechanism is also disclosed for buffering the downward fall of the purified residue storage container 2, wherein the buffer mechanism includes a boss structure 4 and a buffer base 5.

[0059] Reference Figures 2-7 The boss structure 4 is set at the bottom of the purified slag storage container 2. The outer surface of the boss structure 4 is inclined, that is, the boss structure 4 is based on the frustum structure. In this embodiment, a square pyramidal frustum is used as an example, but it is not limited to a square pyramidal frustum. The boss structure 4 set by the frustum structure helps to reduce the water resistance when the purified slag storage container 2 falls downward.

[0060] Reference Figure 6The top of the buffer base 5 is provided with a buffer groove 50, and the shape of the buffer groove 50 is the same as the outer surface of the boss structure 4. When the boss structure 4 moves into the buffer groove 50, the boss structure 4 falls down with the purified residue storage container 2, and the liquid between the boss structure 4 and the buffer groove 50 is squeezed to achieve the effect of buffering and stopping.

[0061] Based on the structure of a buffer mechanism, the center of the boss structure 4 is provided with a solution inlet 40. When the purified residue storage container 2 moves downward instantaneously, the liquid inside moves in the opposite direction to the falling direction of the purified residue storage container 2. This setting further hinders the downward movement of the purified residue in the purified residue storage container 2, thereby increasing the contact time between the purified residue and the liquid in the solute container 1, and thus accelerating the leaching efficiency.

[0062] Based on the structural design of the solution inlet 40, a buffer protrusion 51 is provided at the bottom of the buffer tank 50. The outer diameter of the buffer protrusion 51 is the same as the inner diameter of the solution inlet 40, and the top surface of the buffer protrusion 51 is higher than the top surface of the buffer base 5. Therefore, the structural design of the buffer protrusion 51 further enhances the buffering effect of the downward movement of the purified residue storage container 2.

[0063] This embodiment also discloses a plate structure for supporting purified slag. A load-bearing base plate 6 is provided at the bottom of the purified slag storage container 2. The load-bearing base plate 6 can be fixedly or slidably connected to the bottom of the purified slag storage container 2, and an overflow hole 60 is provided on the load-bearing base plate 6.

[0064] Reference Figure 4 and Figure 5When the load-bearing base plate 6 slides to the bottom of the purified residue storage container 2, the purified residue storage container 2 falls downwards instantly. Due to the relatively large volume of the load-bearing base plate 6, its descent speed is slow. After the purified residue storage container 2 stops abruptly at the bottom, the load-bearing base plate 6 slides within the relatively enclosed purified residue storage container 2, further slowing down its descent speed. At the same time, under the action of the overflow hole 60, the overflow hole 60, which is smaller than the purified residue, moves downwards with the load-bearing base plate 6. The liquid in the purified residue storage container 2 flows in the opposite direction to the movement of the load-bearing base plate 6 through the overflow hole 60. Under the action of the "reverse" flow of liquid, the purified residue on the load-bearing base plate 6 experiences increased resistance at the bottom, thus further slowing down its sinking speed relative to the load-bearing base plate 6. It can also fully contact the liquid, accelerating the leaching speed. It should be added that: 1. The bottom of the purified residue storage container 2 is provided with an inner edge to support the load-bearing base plate 6, preventing the load-bearing base plate 6 from detaching from the purified residue storage container 2. Simultaneously, when the purified residue storage container 2 moves upward, it can drive the load-bearing base plate 6 and the purified residue on it to move upward. 2. Based on the structural design of the buffer protrusion 51 and the solution inlet 40, when the buffer protrusion 51 enters the solution inlet 40, it can instantly increase the resistance below the load-bearing base plate 6, thereby instantly generating a large force to resist the downward fall of the load-bearing base plate 6, and may even cause the load-bearing base plate 6 to pause, thus increasing the falling time of the purified residue stored on it and deepening the reaction time. Furthermore, the top surface of the buffer protrusion 51 is higher than the top surface of the buffer base 5, which can accelerate the point at which the resistance of the load-bearing base plate 6 instantly increases, thereby extending the falling time of the purified residue stored on it.

[0065] When the load-bearing base plate 6 is fixed to the bottom of the purified residue storage container 2, liquid will also flow in a "reverse" direction through the overflow hole 60. This will increase the resistance of the purified residue on the load-bearing base plate 6, further slowing down its sinking speed relative to the load-bearing base plate 6, and allowing it to fully contact the liquid, thus accelerating the leaching speed. Based on the structural design of the buffer protrusion 51 and the solution inlet 40, when the buffer protrusion 51 enters the solution inlet 40, it instantly increases the resistance below the load-bearing base plate 6, further enhancing the buffering effect on the purified residue storage container 2. Simultaneously, when the buffer protrusion 51 enters the solution inlet 40, the liquid pressure below the load-bearing base plate 6 instantly increases, thereby instantly increasing the hydraulic pressure of the liquid ejected from the overflow hole 60. Under the action of the instantly increased hydraulic pressure, the purified residue on the load-bearing base plate 6 floats upward, further enhancing the reaction time and contact area between the purified residue and the liquid inside the purified residue storage container 2.

[0066] This embodiment also discloses a stirrer structure mounted on the load-bearing base plate 6, based on the load-bearing base plate 6. Specifically, a stirrer 8 is rotatably connected to the load-bearing base plate 6. The stirrer 8 includes a connecting ring 80 and multiple stirring blades 81. The stirring blades 81 are fixed to the outer surface of the connecting ring 80, and rotate with the connecting ring 80, thereby agitating the purified residue on the load-bearing base plate 6 and facilitating its movement into the purified residue storage container 2. It should be noted that the stirring blades 81 have a triangular cross-section, with their bottom surface adhering to the top surface of the load-bearing base plate 6. This allows the stirring blades 81 to scoop up the purified residue from the load-bearing base plate 6 through their inclined surfaces as they rotate, helping the scooped-up residue to disperse into the liquid within the purified residue storage container 2, further increasing the contact area and contact time.

[0067] Furthermore, refer to Figures 2-4 The bottom of the heat-insulating cover 7 is connected to a guide shaft 9. The outer surface of the guide shaft 9 is provided with at least two sets of spiral slides 90. The inner side wall of the connecting ring 80 is fixed with sliding protrusions 82 corresponding to the spiral slides 90, and all the sliding protrusions 82 are located in the same plane. When the load-bearing base plate 6 falls downward, the sliding protrusions 82 rotate along the spiral slides 90, thereby braking the stirring blade 81 to rotate through the connecting ring 80.

[0068] Based on the structural design of the guide shaft 9, a flow channel 91 can also be provided inside the guide shaft 9, and multiple flow ports 92 are provided on the outer wall of the guide shaft 9. The flow ports 92 are connected to the flow channel 91, so that dilute sulfuric acid can be injected into the flow channel 91. Since the guide shaft 9 extends into the liquid in the purified residue storage container 2, the flow ports 92 can also extend into the liquid in the purified residue storage container 2. The dilute sulfuric acid flows into the liquid in the purified residue storage container 2 through the flow ports 92, which accelerates the dissolution rate of the dilute sulfuric acid and speeds up the leaching efficiency.

[0069] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for treating the residue after purification of zinc sulfate solution, comprising a solute container (1), characterized in that, The solute container (1) is provided with: The purified residue storage container (2) has an open top and slides vertically inside the solute container (1). The driving component (3) drives the purified slag storage container (2) to move vertically upward to the top, and then the purified slag storage container (2) moves rapidly downward under the action of gravity. Insulating cover (7), the insulating cover (7) is sealed to the top of the solute container (1); The bottom of the purified slag storage container (2) is provided with a buffer mechanism for buffering the purified slag storage container (2) after it moves rapidly downward. The buffer mechanism includes: A boss structure (4) is provided at the bottom of the purified residue storage container (2), and the outer surface of the boss structure (4) is inclined. The buffer base (5) has a buffer groove (50) on its top, and the shape of the buffer groove (50) is the same as the outer surface of the boss structure (4).

2. The equipment for treating the residue after purification of zinc sulfate solution according to claim 1, characterized in that, The driving component (3) includes: a straight tooth groove (30), which is a set of two sets of straight tooth grooves (30), which are symmetrically arranged on opposite sides of the purified residue storage container (2); An incomplete gear roller (31) rotates within the solute container (1) and engages with the straight tooth groove (30).

3. The equipment for treating the residue after purification of zinc sulfate solution according to claim 1, characterized in that, The center of the boss structure (4) is provided with a solution inlet (40).

4. The equipment for treating the residue after purification of zinc sulfate solution according to claim 3, characterized in that, The bottom of the buffer tank (50) is provided with a buffer protrusion (51), the outer diameter of which is the same as the inner diameter of the solution inlet (40).

5. The equipment for treating the residue after purification of zinc sulfate solution according to claim 4, characterized in that, The top surface of the buffer protrusion (51) is higher than the top surface of the buffer base (5).

6. The equipment for treating the residue after purification of zinc sulfate solution according to claim 5, characterized in that, The bottom of the purified residue storage container (2) is provided with a load-bearing base plate (6), and an overflow hole (60) is provided on the load-bearing base plate (6).

7. The equipment for treating the residue after purification of zinc sulfate solution according to claim 6, characterized in that, An agitator (8) is rotatably connected to the load-bearing base plate (6). The agitator (8) includes a connecting ring (80) and a plurality of stirring blades (81). The stirring blades (81) are fixed to the outer surface of the connecting ring (80).

8. The equipment for treating the residue after purification of zinc sulfate solution according to claim 7, characterized in that, The bottom of the heat-insulating cover (7) is connected to a guide shaft (9), and the outer surface of the guide shaft (9) is provided with at least two sets of spiral slides (90). The inner sidewall of the connecting ring (80) is fixed with sliding protrusions (82) corresponding to the spiral slides (90), and all the sliding protrusions (82) are located in the same plane. The guide shaft (9) is provided with a flow channel (91), and the outer wall of the guide shaft (9) is provided with a plurality of flow ports (92), and the flow ports (92) are connected to the flow channel (91).

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