A kind of stirring structure of laterite nickel ore high-pressure reaction kettle

Abstract

The application discloses a stirring structure of a high-pressure reaction kettle for laterite nickel ore, which comprises a stirring part, a driving part and a scale removing part. The stirring part has a fixed part and a movable part. The fixed part is used for stirring materials at the bottom of the kettle body. The movable part is arranged above the fixed part and can move relative to the fixed part. The paddles outside the movable part form a stirring interval which gradually expands when the movable part moves towards the fixed part and gradually shrinks when the movable part moves away from the fixed part. The driving part is connected with the stirring part and is used for driving the stirring part to rotate. One end of the scale removing part away from the central shaft forms a scale removing end which is used for removing scale on the inner wall of the kettle body. The other end of the scale removing part is connected with the movable part. The stirring part of the application can drive the scale removing part to move up and down in the kettle body along with the movement of the movable part during stirring, so that the scale removing part is scraped at different positions of the inner wall of the kettle body in sequence. The stirring structure is favorable for preventing the formation of scale layer on the inner wall of the kettle body and can also remove scale on the inner wall, so that the scale removing effect is better.

Description

Technical Field

[0001] This application relates to the field of chemical equipment technology, specifically to a stirring structure for a high-pressure reactor for laterite nickel ore. Background Technology

[0002] Due to its environmental advantages, the hydrometallurgical process for laterite nickel ore is being increasingly widely used in the field of laterite nickel ore smelting. The hydrometallurgical process for laterite nickel ore mainly includes atmospheric leaching and pressure leaching. The pressure leaching process generally involves first preparing the ore into a slurry, then preheating the slurry, subjecting the preheated slurry to pressure acid leaching in an autoclave, followed by cooling and depressurization, neutralization, separation of the leaching slurry, and purification of the leaching solution.

[0003] However, during high-temperature leaching, scale buildup occurs on the walls of the high-pressure reactor due to the hydrolysis and precipitation of Fe3+ and Al3+ metal ions, the precipitation of low-solubility substances such as CaSO4, and the precipitation of solid impurities such as SiO2 in the minerals. This leads to a series of problems that are detrimental to production, such as reduced reactor volume. To address the issue of reactor scaling, patent CN112024551A provides a reactor cleaning and descaling system. This system includes a cleaning tank connected to the reactor inlet via a pipeline; acidic and alkaline cleaning solution containers connected to the cleaning tank via pipelines, with a first solenoid valve and a second solenoid valve connected to each pipeline; a pH monitor probe placed inside the reactor; a programmable controller electrically connected to the first and second solenoid valves and the pH monitor; a cleaning pump connected to the pipeline between the cleaning tank and the reactor; an acid-base neutralization device connected to the reactor outlet via a pipeline; and a water filter connected to both the cleaning tank and the acid-base neutralization device via pipelines.

[0004] When there is a lot of scale buildup, the existing reactor cleaning and descaling systems remove the scale by adding descaling agents and stirring, but this method is not very effective.

[0005] Application content

[0006] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a stirring structure for a high-pressure reactor for laterite nickel ore, thereby solving the technical problem of poor descaling effect in the existing technology.

[0007] To achieve the above-mentioned technical objectives, this application adopts the following technical solution:

[0008] This application provides a stirring structure for a high-pressure reactor for laterite nickel ore, comprising: a stirring element, a driving element, and a scraping element. The stirring element has a fixed part and a movable part. The fixed part is used to stir materials at the bottom of the reactor body. The movable part is disposed above the fixed part and can move relative to the fixed part, so that the blades on the outer side of the movable part form a stirring zone that gradually expands when the movable part moves closer to the fixed part and gradually shrinks when the movable part moves away from the fixed part. The driving element is connected to the stirring element and is used to drive the stirring element to rotate. One end of the scraping element is formed as a scraping end for scraping off dirt from the inner wall of the reactor body, and the other end is connected to the movable part.

[0009] In some embodiments, the stirring structure of the laterite nickel ore high-pressure reactor further includes a driving component connected to the movable part to drive the movable part to move relative to the fixed part. The driving component includes a screw, a threaded sleeve, and a second motor. The screw is disposed on one side of the stirring element, and its length direction is parallel to the movement direction of the movable part. The threaded sleeve is sleeved on the outside of the screw and threadedly connected to the screw, with one side of the threaded sleeve connected to the movable part. The drive shaft of the second motor is connected to the screw to drive the screw to rotate, thereby causing the threaded sleeve to move along the length direction of the screw.

[0010] In some embodiments, the stirring component further includes a central shaft, and both the fixed part and the movable part are connected to the central shaft. One end of the central shaft is connected to the driving end of the driving component, allowing the driving component to drive the fixed part and the movable part to rotate via the central shaft. The fixed part includes a fixed sleeve, fixed blades, and a fixed seat. The fixed sleeve is sleeved on the end of the central shaft. A plurality of fixed blades are sequentially arranged along the circumference of the outer side of the fixed sleeve. The fixed seat is disposed above the fixed sleeve and fixed to the central shaft. The movable part includes a movable seat, a movable rod, a movable blade, and a connecting rod. The movable seat is slidably sleeved on the outer side of the central shaft, and a plurality of connecting rods are sequentially arranged along the circumference of its outer side. A plurality of movable rods are sequentially arranged along the circumference of the outer side of the fixed seat. One end of the movable rod is rotatably connected to the fixed seat, and the other end is connected to the movable blade. The two ends of the connecting rod are rotatably connected to the sides of the movable seat and the movable rod, respectively, so that the movable rod can be driven to rotate around the fixed seat by the up-and-down movement of the movable seat.

[0011] In some embodiments, both sides of the central shaft are provided with sliding grooves extending along the movement direction of the movable seat. A slider is provided on the inner side of the movable seat at a position corresponding to the sliding groove, the slider being housed within the sliding groove and slidably connected to it. A connecting sleeve is rotatably connected to the top of the movable seat. An annular groove is formed on the inner side of the connecting sleeve. The top and bottom walls of the annular groove are arranged in a circular array with a plurality of balls as a reference to the central axis of the central shaft. An annular frame is provided on the top of the movable seat, rotatably connected to the annular groove, and the annular frame is movably clamped between the plurality of balls.

[0012] In some embodiments, the scraping component includes a connecting rod and a scraper. The two ends of the connecting rod are respectively connected to the scraper and the connecting sleeve. The scraper is used to abut against the inner wall of the vessel body so that the connecting rod and the scraper can move up and down through the movable seat and the connecting sleeve to scrape the inner wall of the vessel body.

[0013] In some embodiments, the drive includes a first motor connected to the central shaft for driving the central shaft to rotate.

[0014] Compared with the prior art, the stirring structure of the high-pressure reactor for laterite nickel ore provided in this application, through the setting of stirring components, driving components, and scraping components, uses the driving components to drive the fixed part and the moving part to rotate, thereby realizing the stirring of the slurry; by adjusting the movement of the moving part relative to the fixed part, the scraping components are driven to move up and down in the reactor body with the movement of the moving part, so that the scraping components scrape at different positions on the inner wall of the reactor body in sequence, which helps to prevent the formation of scale layer on the inner wall of the reactor body, and at the same time, it can also scrape off the dirt on the inner wall, resulting in better descaling effect;

[0015] The stirring zone is formed between the blades on the outer side of the moving part. As the moving part moves closer to the fixed part, the stirring zone gradually expands, and as the moving part moves away from the fixed part, the stirring zone gradually shrinks. This allows the width and height of the stirring components to change continuously during stirring, forming different degrees of swirling flow in the vessel. This enables stirring at different liquid levels and helps improve the material mixing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main cross-sectional view of the stirring structure of the high-pressure reactor for laterite nickel ore provided in the embodiments of this application;

[0017] Figure 2 This is a schematic cross-sectional view of the stirring structure of the high-pressure reactor for laterite nickel ore provided in this application embodiment when the movable blades are moved to the highest position.

[0018] Figure 3This is a schematic cross-sectional view of the stirring structure of the high-pressure reactor for laterite nickel ore provided in this application embodiment when the movable blades are moved to the lowest position.

[0019] Figure 4 This is a schematic diagram of the main cross-sectional view of the stirring structure of a high-pressure reactor for laterite nickel ore provided in another embodiment of this application;

[0020] Figure 5 This is a top cross-sectional view of the connection between the central shaft and the movable seat of the stirring structure of the high-pressure reactor for laterite nickel ore provided in this application embodiment;

[0021] Figure 6 This is a cross-sectional schematic diagram of the connection between the movable seat and the connecting sleeve of the stirring structure of the high-pressure reactor for laterite nickel ore provided in this application embodiment.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Agitator; 11. Fixed part; 111. Fixed sleeve; 112. Fixed blade; 113. Fixed seat; 12. Movable part; 121. Movable seat; 122. Movable rod; 123. Movable blade; 124. Connecting rod; 125. Slider; 126. Connecting sleeve; 127. Ball bearing; 128. Annular frame; 13. Central shaft; 131. Slide groove;

[0024] 2. Driving components; 21. First motor;

[0025] 3. Scraper; 31. Connecting rod; 32. Scraper; 33. Telescopic drive rod;

[0026] 4. Drive components; 41. Screw; 42. Threaded sleeve; 43. Second motor;

[0027] 5. The vessel body; 6. The liquid level sensor. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] To address the technical problem of ineffective descaling methods in existing systems, this application provides a stirring structure for a high-pressure reactor for laterite nickel ore. The stirring component can drive the scraping component to move up and down within the reactor body during stirring, allowing the scraping component to scrape at different positions on the inner wall of the reactor in sequence. This helps prevent the formation of scale on the inner wall of the reactor and also removes dirt from the inner wall, resulting in a better descaling effect.

[0030] It should be noted that the stirring structure of the high-pressure reactor for laterite nickel ore described in this application is used for, but not limited to, laterite nickel ore. For ease of explanation, this application only uses the application of the stirring structure of the high-pressure reactor for laterite nickel ore as an example. The principle of applying the stirring structure of the high-pressure reactor for laterite nickel ore to other types of product processing is essentially the same as that applied to laterite nickel ore, and will not be elaborated here.

[0031] Please see Figure 1 , Figure 1 This is a schematic front cross-sectional view of the stirring structure of a high-pressure reactor for laterite nickel ore according to an embodiment of this application. The stirring structure of the high-pressure reactor for laterite nickel ore includes: a stirring element 1, a driving element 2, and a scraper element 3. The stirring element 1 has a fixed part 11 and a movable part 12. The fixed part 11 is used to stir materials at the bottom of the reactor body 5. The movable part 12 is disposed above the fixed part 11 and can move relative to the fixed part 11, so that the blades on the outer side of the movable part 12 form a stirring zone that gradually expands when the movable part 12 moves towards the fixed part 11 and gradually shrinks when the movable part 12 moves away from the fixed part 11. The driving element 2 is connected to the stirring element 1 and is used to drive the stirring element 1 to rotate. One end of the scraper element 3 is formed to scrape off dirt from the inner wall of the reactor body 5, and the other end is connected to the movable part 12.

[0032] In this design, the agitator 1 has a fixed part 11 and a movable part 12. The fixed part 11 and the movable part 12 can be driven to rotate by the drive part 2 to agitate the slurry. By adjusting the movement of the movable part 12 relative to the fixed part 11, the scraper 3 moves up and down inside the vessel body 5 with the movement of the movable part 12, so that the scraper 3 scrapes at different positions on the inner wall of the vessel body 5 in sequence. This helps to prevent the formation of scale on the inner wall of the vessel body 5, and at the same time, it can also scrape off the dirt on the inner wall, resulting in better descaling effect. Furthermore, the agitation zone gradually expands when the movable part 12 moves closer to the fixed part 11, and gradually shrinks when the movable part 12 moves away from the fixed part 11. This allows the width and height of the agitator 1 to change continuously during agitation, forming different degrees of vortex flow inside the vessel body 5, which can achieve agitation at different liquid levels and improve the material mixing efficiency.

[0033] In this embodiment, please refer to Figures 1 to 3 The stirring component 1 also includes a central shaft 13, which connects the movable part 12 and the fixed part 11. The top end of the central shaft 13 is connected to the driving end of the driving component 2. The portion of the central shaft 13 that passes through the top of the vessel body 5 is rotatably connected to the vessel body 5 through a bearing, so that the driving component 2 can drive the fixed part 11 and the movable part 12 to rotate synchronously through the central shaft 13, thereby stirring the slurry inside the vessel body 5.

[0034] To achieve the desired height and width deformation of the stirring rod, please refer to the following embodiment: Figures 1 to 3 The fixing part 11 includes a fixing sleeve 111, a fixing blade 112, and a fixing seat 113. The fixing sleeve 111 is sleeved on the end of the central shaft 13. A plurality of fixing blades 112 are arranged sequentially along the circumference of the outer side of the fixing sleeve 111. When the central shaft 13 is installed in the vessel body 5, the end of which the fixing sleeve 111 is installed is located at the bottom of the internal cavity of the vessel body 5, so that the fixing sleeve 111 and the fixing blades 112 are held at the bottom of the internal cavity of the vessel body 5, thereby stirring the material at the bottom of the vessel body 5.

[0035] The fixed seat 113 is disposed above the fixed sleeve 111 and is sleeved on the central shaft 13; the movable part 12 includes a movable seat 121, a movable rod 122, a movable blade 123, and a connecting rod 124, wherein the number of movable rods 122, movable blades 123, and connecting rods 124 are equal. The movable seat 121 is slidably sleeved on the outside of the central shaft 13, located above the fixed seat 113, and a plurality of connecting rods 124 are sequentially arranged on its outer side along its circumference; the fixed seat A plurality of movable rods 122 are arranged sequentially along the circumference of the outer side of the fixed seat 113. One end of the movable rod 122 is rotatably connected to the fixed seat 113, and the other end is fixedly connected to the movable blade 123. The two ends of the connecting rod 124 are respectively rotatably connected to the hinge seat provided in the middle of the side of the movable seat 121 and the movable rod 122, so that the movable rod 122 is driven to rotate around the fixed seat 113 by the connecting rod 124 through the up and down movement of the movable seat 121.

[0036] When the movable seat 121 moves downward, it drives the outer end of the movable rod 122 to rotate downward through the connecting rod 124, causing the distance between each movable blade 123 to gradually increase and the stirring zone to gradually expand. At the same time, the movable blades 123 move downward. When the movable seat 121 moves upward, it drives the outer end of the movable rod 122 to rotate upward through the connecting rod 124, causing the distance between each movable blade 123 to gradually decrease and the stirring zone to gradually shrink. At the same time, the movable blades 123 move upward. In practice, the height of the movable blades 123 can be adjusted according to the liquid level inside the vessel 5 to adapt to different liquid levels and achieve more thorough stirring.

[0037] Within the rotational stroke of the movable rod 122, when the angle between the movable rod 122 and the central shaft 13 is less than 30°, the movable rod 122 drives the movable blade 123 to move to the highest position, at which point the stirring range is the smallest. When the movable rod 122 rotates to a horizontal state, the movable rod 122 drives the movable blade 123 to rotate to the lowest position, at which point the stirring range is the largest. In order to limit and fix the movable rod 122, a limiting plate is set below the fixed base 113. Limiting blocks are set on the limiting plate at positions corresponding to the movable rod 122. When the movable rod 122 rotates to a horizontal state, the bottom surface of the movable rod 122 contacts the limiting block, preventing the movable rod 122 from continuing to rotate downward.

[0038] Preferably, the movable blade 123 has an arc-shaped structure, and the blades of the fixed part 11 and the movable part 12 are three- or four-bladed, with the blade angle being 12-42°.

[0039] Furthermore, in some embodiments, please refer to Figure 1 and Figure 5 Both sides of the central shaft 13 are provided with slide grooves 131 extending along the movement direction of the movable seat 121. The inner side of the movable seat 121 is provided with two sliders 125 corresponding to the positions of the slide grooves 131. The sliders 125 are built into the slide grooves 131 and are slidably connected to the slide grooves 131. When the movable seat 121 slides up and down on the outside of the central shaft 13, the sliders 125 slide in the corresponding slide grooves 131 to improve the stability of the movable seat 121 during movement.

[0040] Preferably, in this embodiment, please refer to Figures 1 to 3 The driving component 2 includes a first motor 21, which is mounted on the top of the vessel body 5. Its drive shaft is connected to the central shaft 13 via a coupling, and can drive the central shaft to rotate.

[0041] The movable part 12 is disposed above the fixed part 11 and can move relative to the fixed part 11 to realize up and down movement within the vessel body 5. At the same time, the width and height of the stirring piece 1 can be adjusted by the up and down movement. In order to realize the adjustment of the movable part 12, in this embodiment, a driving component 4 is also provided. The driving component 4 is connected to the movable part 12 to drive the movable part 12 to move relative to the fixed part 11.

[0042] In one embodiment, please refer to Figures 1 to 3The driving component 4 includes a screw 41, a threaded sleeve 42, and a second motor 43. The screw 41 is disposed on one side of the stirring component 1, and its length direction is parallel to the movement direction of the movable part 12, so that the screw 41 is arranged side by side with the central shaft 13. The screw 41 is rotatably connected to the top wall of the vessel body 5 through a bearing. The threaded sleeve 42 is sleeved on the outside of the screw 41 and threadedly connected to the screw 41. One side of the threaded sleeve 42 is connected to the movable part 12. The second motor 43 is fixedly installed on the top of the vessel body 5, and its drive shaft is connected to the screw 41 through a coupling to drive the screw 41 to rotate and drive the threaded sleeve 42 to move along the length direction of the screw 41. One side of the threaded sleeve 42 is connected to the movable seat 121, thereby driving the movable seat 121 to move up and down, realizing the deformation adjustment of the stirring component 1.

[0043] Since the movable seat 121 is rotating during the stirring operation of the stirring component 1, in order to prevent the movable seat 121 from causing the driving component 4 to deflect and to ensure the stability of the driving component 4, in this embodiment, please refer to... Figures 1 to 3 , Figure 6 A connecting sleeve 126 is rotatably connected to the top of the movable seat 121 to connect the threaded sleeve 42 and the movable seat 121. Specifically, an annular groove is formed on the inner side of the connecting sleeve 126, and several balls 127 are provided on the top and bottom walls of the annular groove. The balls 127 are arranged in a circular array with the central axis of the central shaft 13 as the reference. An annular frame 128 is fixedly provided on the top of the movable seat 121 and is rotatably connected to the annular groove. The annular frame 128 is integrally formed with the movable frame. The annular frame 128 is movably clamped between the balls 127, so that the annular frame 128 can rotate in the annular groove and is supported by the balls 127. When the annular frame 128 rotates, the balls 127 rotate accordingly to reduce the friction of the annular frame 128 during movement and make its transmission smoother.

[0044] It should be noted that in other embodiments, the specific form of the driving component 4 is not limited to this, and it can also be other driving structures that can drive the movable seat 121 to move up and down, such as a cylinder, a telescopic rod, or a screw jack.

[0045] In order to remove the dirt from the inner wall of the vessel body 5, in this embodiment, please refer to... Figures 1 to 3The scraping component 3 includes a connecting rod 31 and a scraper 32. The two ends of the connecting rod 31 are respectively connected to the scraper 32 and the connecting sleeve 126. When the movable seat 121 rotates, it does not cause the connecting sleeve 126 to rotate. However, when the movable seat 121 moves up and down, it drives the connecting sleeve 126 to move the scraper 32 up and down inside the vessel body 5. The scraper 32 is used to abut against the inner wall of the vessel body 5, so that the connecting rod 31 and the scraper 32, driven by the movable seat 121 and the connecting sleeve 126, move up and down to scrape the scale from the inner wall of the vessel body 5. The stirring component 1 is staggered from the scraping component 3, that is, the connecting rod 31 and the movable rod 122 are staggered.

[0046] Since the scraper 32 scrapes the scale from the inner wall of the vessel body 5 by moving up and down, the vessel body 5 is preferably cylindrical or cubic in shape. Please refer to [link to relevant documentation]. Figure 4 Its inner sides are all vertical arc surfaces or vertical planes, allowing the scraper 32 to contact the inner wall of the vessel 5 through vertical translational movement, thus achieving scraping. Of course, this scraper 3 can also adapt to a horizontally oriented reaction vessel structure. To accommodate situations where the distance between the central axis 13 and the inner wall of the vessel 5 is unequal in the height direction, the connecting rod 31 can be replaced with a telescopic drive rod 33. The telescopic drive rod 33 can drive the scraper 32 to extend or shorten, allowing the scraper 32 to contact the irregular inner wall of the vessel 5. For example, in this embodiment, please refer to... Figures 1 to 3 The vessel body 5 is one side of a horizontal tank. At this time, there are at least four scraping components 3, corresponding to the four sides of a chamber. The scraping component 3 includes a scraper 32 and a connecting section. The connecting section is a connecting rod 31 and / or a telescopic drive rod 33. The scraper 32 corresponding to the inner partition of the vessel body 5 is connected to the connecting sleeve 126 through the connecting rod 31. The scraper 32 corresponding to the inner wall of the vessel body 5 is connected to the connecting sleeve 126 through the telescopic drive rod 33.

[0047] It should be noted that the telescopic drive rod 33 is a cylinder, telescopic rod, etc.

[0048] Furthermore, in some embodiments, a liquid level sensor 6 is also installed on the top of the vessel body 5. The liquid level sensor 6 is electrically connected to the second motor 43 of the drive component 4 via a sensor, and can drive the second motor 43 according to the liquid level. Preferably, the liquid level sensor 6 is an ultrasonic liquid level sensor, which measures the liquid level by emitting ultrasonic waves and detecting the reflected signals. The height of the liquid level can be calculated based on the flight time and speed of the ultrasonic waves.

[0049] Working principle: During implementation, the liquid level sensor 6 detects the slurry level in the reactor. Based on the liquid level, the second motor 43 is driven. When the liquid level drops below the movable blades 123, the second motor 43, threaded sleeve 42, and screw 41 drive the movable seat 121 downwards. This, in turn, drives the outer end of the movable rod 122 downwards via connecting rod 124, gradually increasing the distance between the movable blades 123 and expanding the stirring zone. Simultaneously, the movable blades 123 move downwards. When the liquid level rises, the second motor 43, threaded sleeve 42, and screw 41 drive the movable seat 121 downwards. 2 and screw 41 drive the movable seat 121 to move upward, which drives the outer end of the movable rod 122 to rotate upward through the connecting rod 124, so that the distance between each movable blade 123 gradually decreases and the stirring zone gradually shrinks. At the same time, the movable blade 123 moves upward to adapt to different liquid levels and stir more thoroughly. When the movable seat 121 moves up and down, it can drive the scraper 32 to move up and down synchronously inside the vessel 5. When it moves, it can scrape the inner wall of the vessel 5, which helps to prevent the formation of scale on the inner wall of the vessel 5, and can also scrape off the dirt on the inner wall.

[0050] The present invention utilizes a stirring component 1, a driving component 2, and a scraping component 3. The driving component 2 drives the fixed part 11 and the movable part 12 to rotate, thereby agitating the slurry. By adjusting the movement of the movable part 12 relative to the fixed part 11, the scraping component 3 moves up and down within the vessel body 5, allowing it to scrape at different positions on the inner wall of the vessel body 5 in sequence. This helps prevent the formation of scale on the inner wall of the vessel body 5 and also removes dirt from the inner wall, resulting in a better descaling effect.

[0051] The present invention forms a stirring zone between the blades on the outer side of the movable part 12. When the movable part 12 moves toward the fixed part 11, the stirring zone gradually expands and when the movable part 12 moves away from the fixed part 11, the stirring zone gradually shrinks. This allows the width and height of the stirring element 1 to change continuously during stirring, forming different degrees of swirling flow in the vessel body 5. This enables stirring at different liquid levels and helps improve the material mixing efficiency.

[0052] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0053] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of the claims of this application.

Claims

1. A stirring structure for a high-pressure reactor for laterite nickel ore, characterized in that, include: A stirring component having a fixed part and a movable part, the fixed part being used to stir materials at the bottom of the vessel, the movable part being disposed above the fixed part and being able to move relative to the fixed part, such that a stirring zone is formed between the blades on the outer side of the movable part, which gradually expands when the movable part moves toward the fixed part and gradually shrinks when the movable part moves away from the fixed part; A driving component, connected to the stirring component, is used to drive the stirring component to rotate; as well as The scraper has one end formed for scraping off dirt from the inner wall of the vessel, and the other end is connected to the movable part.

2. The stirring structure of the high-pressure reactor for laterite nickel ore according to claim 1, characterized in that, It also includes a drive component connected to the movable part to drive the movable part to move relative to the fixed part.

3. The stirring structure of the high-pressure reactor for laterite nickel ore according to claim 2, characterized in that, The driving component includes a screw, a threaded sleeve, and a second motor. The screw is disposed on one side of the stirring component, and its length direction is parallel to the movement direction of the movable part; The threaded sleeve is fitted onto the outside of the screw and is threadedly connected to the screw, and one side of the threaded sleeve is connected to the movable part; The drive shaft of the second motor is connected to the screw to drive the screw to rotate and cause the threaded sleeve to move along the length of the screw.

4. The stirring structure of the high-pressure reactor for laterite nickel ore according to claim 1, characterized in that, The stirring component also includes a central shaft, and both the fixed part and the movable part are connected to the central shaft. One end of the central shaft is connected to the driving end of the driving component, so that the driving component can drive the fixed part and the movable part to rotate through the central shaft.

5. The stirring structure of the high-pressure reactor for laterite nickel ore according to claim 4, characterized in that, The fixing part includes a fixing sleeve, a fixing blade, and a fixing base. The fixed sleeve is fitted onto the end of the central shaft; a plurality of fixed blades are arranged sequentially along the circumference of the outer side of the fixed sleeve. The fixing seat is disposed above the fixing sleeve and is fitted onto the central shaft.

6. The stirring structure of the high-pressure reactor for laterite nickel ore according to claim 5, characterized in that, The movable part includes a movable seat, a movable rod, a movable blade, and a connecting rod. The movable seat is slidably sleeved on the outside of the central shaft, and several connecting rods are arranged sequentially along its circumference on its outside. Several movable rods are arranged sequentially along the circumference of the outer side of the fixed base. One end of each movable rod is rotatably connected to the fixed base, and the other end is connected to the movable blade. The two ends of the connecting rod are rotatably connected to the sides of the movable seat and the movable rod, respectively, so that the movable rod can be driven to rotate around the fixed seat by the up and down movement of the movable seat.

7. The stirring structure of the high-pressure reactor for laterite nickel ore according to claim 6, characterized in that, Both sides of the central shaft are provided with sliding grooves extending along the movement direction of the movable seat. The inner side of the movable seat is provided with sliders at positions corresponding to the sliding grooves. The sliders are built into the sliding grooves and are slidably connected to the sliding grooves.

8. The stirring structure of the high-pressure reactor for laterite nickel ore according to claim 7, characterized in that, The top of the movable seat is rotatably connected to a connecting sleeve. An annular groove is opened on the inner side of the connecting sleeve. The top and bottom walls of the annular groove are arranged in a circular array with the central axis of the central shaft as the reference. The top of the movable seat is provided with an annular frame that is rotatably connected to the annular groove, and the annular frame is movably clamped between a plurality of the balls.

9. The stirring structure of the high-pressure reactor for laterite nickel ore according to claim 8, characterized in that, The scraping component includes a connecting rod and a scraper. The two ends of the connecting rod are respectively connected to the scraper and the connecting sleeve. The scraper is used to abut against the inner wall of the vessel body so that the connecting rod and the scraper can move up and down through the movable seat and the connecting sleeve to scrape the scale from the inner wall of the vessel body.

10. The stirring structure of the high-pressure reactor for laterite nickel ore according to claim 4, characterized in that, The driving component includes a first motor, which is connected to the central shaft to drive the central shaft to rotate.

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