Stirring structure of laterite nickel ore autoclave

Abstract

The present invention discloses a stirring structure of laterite nickel ore autoclaves, comprising: a stirring component, a driving component and a scraping component. The stirring component has a fixed part and a movable part, the fixed part is used to stir the material at the bottom of the autoclave body, and the movable part is arranged above the fixed part and can move relative to the fixed part, so that a stirring zone is formed between the blades outside 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. The driving component is connected to the stirring component and is used to drive the stirring component to rotate; one end of the scraping component forms a scraping end for scraping dirt on the inner wall of the autoclave body, and the other end of the scraping component is connected to the movable part. The stirring component of the present invention can drive the scraping component to move up and down in the autoclave body along with the movement of the movable part during stirring, so that the scraping component scrapes at different positions of the inner wall of the autoclave body, which is beneficial to prevent the formation of a scale layer on the inner wall of the autoclave body. At the same time, it can also scrape off the scale on the inner wall, and the descaling effect is better.

Description

[0001] Description

[0002] STIRRING STRUCTURE OF LATERITE NICKEL ORE AUTOCLAVE

[0003] Field Of Invention

[0004] The present invention relates to the technical field of chemical equipment , and in particular to a stirring structure of a laterite nickel ore autoclave .

[0005] Background

[0006] The laterite nickel ore hydrometallurgy process is increasingly widely used in the field of laterite nickel ore smelting due to its environmental advantages . The laterite nickel ore hydrometallurgy process mainly includes atmospheric pressure leaching and pressure leaching . The general process of pressure leaching is to first make the ore into slurry, then preheat the slurry, pressuri ze the preheated slurry for acid leaching in an autoclave , then cool and depressuri ze , neutrali ze , separate and puri fy the leaching liquor .

[0007] However, during the high-temperature leaching process , due to the hydrolysis and precipitation o f Fe3+and Al3+, the precipitation of low-solubility substances such as CaSCh , and the precipitation of solid impurities such as SiCh in the mineral , scale will form on the wall of the autoclave , resulting in a series of problems that are not conducive to production, such as a reduction in the volume of the autoclave . In order to solve the problem of reactor scaling, the patent with publication number CN112024551A provides a reactor cleaning and descaling system . It comprises a cleaning box, which is connected to the inlet of the reactor through a pipeline ; an acid cleaning liquid container and an alkaline cleaning liquid container are respectively connected to the cleaning box through pipelines , and the two pipelines are respectively connected with a first solenoid valve and a second solenoid valve ; a monitoring probe of a pH value monitor is placed in the reactor ; the programmable controller is electrically connected to the first solenoid valve , the second solenoid valve , and the pH value monitor ; the cleaning pump is connected to the pipeline between the cleaning tank and the reactor ; the acid-base neutrali zation device is connected to the outlet of the reactor through the pipeline ; the water filter is respectively connected to the cleaning tank and the acid-base neutrali zation device through the pipeline .

[0008] When there is a large amount of scale , the existing reactor cleaning and descaling system removes the scale by adding descaling agents and stirring, but this removal method is not ef fective .

[0009] Summary

[0010] The obj ective of this invention is to overcome the above-mentioned technical deficiencies , propose a stirring structure for laterite nickel ore autoclave , and solve the technical problem of poor descaling ef fect in the prior art .

[0011] In order to achieve the above technical ob ectives , this invention adopts the following technical solutions :

[0012] The present application provides a stirring structure for a laterite nickel ore autoclave , comprising : a stirring component , a driving component and a scraping component . The stirring component has a fixed part and a movable part , the fixed part is used to stir the material at the bottom of the autoclave body, and the movable part is arranged above the fixed part and can move relative to the fixed part , so that a stirring zone is formed between the blades outside 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 . The driving component is connected to the stirring component and is used to drive the stirring component to rotate ; one end of the scraping component forms a scraping end for scraping scale on the inner wall of the autoclave body, and the other end of the scraping component is connected to the movable part .

[0013] In some embodiments , the stirring structure of the laterite nickel ore autoclave further includes a driving member, wherein the driving member is connected to the movable part to drive the movable part to move relative to the fixed part . The driving member includes a screw, a threaded sleeve and a second motor . The screw is arranged 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 sleeved on 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 driving shaft of the second motor is connected to the screw to drive the screw to rotate and drive the threaded sleeve to move along the length direction of the screw .

[0014] In some embodiments , the stirring component also includes a central shaft , the fixed part and the movable part are both 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 drives the fixed part and the movable part to rotate through the central shaft . The fixed part includes a fixed sleeve , a fixed blade and a fixed base . The fixed sleeve is set at the end of the central shaft ; a number of fixed blades are arranged on the outside of the fixed sleeve along its circumferential direction . ; The fixed base is arranged above the fixed sleeve and is fixed on the central shaft . The movable part includes a movable base , a movable rod, a movable blade and a connecting rod . The movable base is slidably sleeved on the outer side of the central shaft , and multiple connecting rods are sequentially arranged on the outer side along the circumference thereof ; Multiple movable rods are sequentially arranged on the outer side of the fixed base along its circumference , one end of the 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 respectively rotatably connected to the movable base and the side of the movable rod, so as to drive the movable rod to rotate around the fixed base through the up and down movement of the movable base .

[0015] In some embodiments , both sides of the central shaft are provided with sliding grooves extending along the movement direction of the movable base , and sliders are arranged on the inner side of the movable base at positions corresponding to the sliding grooves . The sliders are installed into the sliding grooves and are slidably connected to the sliding grooves . The top end of the movable base is rotatably connected to a connecting sleeve , and an annular groove is arranged on the inner side o f the connecting sleeve . The top wall and the bottom wall of the annular groove are based on the central axis of the central shaft , and a plurality of balls are arranged in an annular array; the top of the movable base is provided with an annular frame rotatably connected to the annular groove , and the annular frame is movably clamped between the plurality of balls .

[0016] 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 , and the scraper is used to contact the inner wall of the autoclave body so as to drive the connecting rod and the scraper to move up and down through the movable base and the connecting sleeve to scrape the inner wall of the autoclave body .

[0017] In some embodiments , the driving component includes a first motor connected to the central shaft to drive the central shaft to rotate .

[0018] Compared with the prior art , the stirring structure of the laterite nickel ore autoclave provided by the present application reali zes stirring of the ore slurry by arranging a stirring component , a driving component and a scraping component , and utili zing the driving component to drive the fixed part and the movable part to rotate ; by adj usting the movement of the movable part relative to the fixed part , the scraping component is driven to move up and down in the autoclave body along with the movement of the movable part , so that the scraping component scrapes at di f ferent positions of the inner wall of the component body, which is beneficial to preventing the formation of a scale layer on the inner wall of the autoclave body, and at the same time , it can also scrape of f the scale on the inner wall , and the descaling ef fect is better ;

[0019] A stirring zone is formed between the blades on the outer side of the movable part . When the movable part moves toward the fixed part , the stirring zone gradually expands , and when the movable part moves away from the fixed part , the stirring zone gradually shrinks . During stirring, the width and height of the stirring component can be continuously changed, and vortexes of di f ferent degrees are formed in the autoclave body . Stirring of di f ferent liquid levels can be achieved, which is beneficial to improving the material mixing ef ficiency .

[0020] Brief Description Of The Drawings

[0021] FIG . 1 is a schematic diagram of the front cross-sectional structure of the stirring structure of a laterite nickel ore autoclave provided in an embodiment of the present application;

[0022] FIG. 2 is a schematic cross-sectional view of the stirring structure of the laterite nickel ore autoclave provided in an embodiment of the present application when the movable blades are moved to the highest position;

[0023] FIG. 3 is a schematic cross-sectional view of the stirring structure of the laterite nickel ore autoclave provided in an embodiment of the present application when the movable blades are moved to the lowest position;

[0024] FIG. 4 is a schematic diagram of the front cross-sectional structure of the stirring structure of the laterite nickel ore high-pressure reactor provided in another embodiment of the present application;

[0025] FIG. 5 is a schematic diagram of a top view of the cross-sectional structure of the connection between the central shaft of the stirring structure of the laterite nickel ore autoclave provided in an embodiment of the present application and the movable base;

[0026] FIG. 6 is a schematic cross-sectional structure diagram of the connection between the movable base and the connecting sleeve of the stirring structure of the laterite nickel ore autoclave provided in an embodiment of the present application.

[0027] Explanation of the reference numerals:

[0028] 1. stirring component; 11. fixed part; 111. fixed sleeve; 112. fixed blade; 113. fixed base; 12. movable part; 121. movable base; 122. movable rod; 123. movable blade; 124. connecting rod; 125. slider; 126. connecting sleeve; 127. ball; 128. annular frame; 13. central shaft; 131. slide groove;

[0029] 2. driving component; 21. first motor;

[0030] 3. scraping component; 31. connecting rod; 32. scraper; 33. telescopic driving rod;

[0031] 4. driving member; 41. screw; 42. threaded sleeve; 43. second motor;

[0032] 5. autoclave body; 6. liquid level sensor.

[0033] Detailed Description In order to make the obj ective , technical solution, and advantages of this application clearer and more understandable , the present application is further described in detail below in conj unction with the drawings and embodiments . It should be understood that the speci fic embodiments described herein are only used to explain the present application and are not used to limit the present application .

[0034] In order to solve the technical problem that the existing descaling methods are inef fective , the present application provides a stirring structure for the laterite nickel ore autoclave . The stirring component can drive the scraping component to move up and down in the autoclave body along with the movement of the movable part during stirring, so that the scraping component scrapes at di f ferent positions of the inner wall of the autoclave body, which is beneficial to prevent the formation of a scale layer on the inner wall of the autoclave body . At the same time , it can also scrape of f the scale on the inner wall , and the descaling ef fect is better .

[0035] It should be noted that the stirring structure of the laterite nickel ore autoclave described in the present application is used for but not limited to laterite nickel ore , etc . For the convenience of explanation, in the present application, only the stirring structure of the laterite nickel ore autoclave is applied to laterite nickel ore as an example for explanation, and the principle of applying the stirring structure of the laterite nickel ore autoclave to other types of product processing is essentially the same as the principle applied to laterite nickel ore , which will not be repeated here .

[0036] Please refer to FIG . 1 , which is a schematic diagram of the front cross-sectional structure of the stirring structure of the laterite nickel ore autoclave in an embodiment of the present application . The stirring structure of the laterite nickel ore autoclave includes : a stirring component 1 , a driving component 2 and a scraping component 3 , wherein the stirring component 1 has a fixed part 11 and a movable part 12 , wherein the fixed part 11 is used to stir the material at the bottom of the autoclave body 5 , and the movable part 12 is arranged above the fixed part 11 and can move relative to the fixed part 11 , so that a stirring zone is formed between the blades outside the movable part 12 , which gradually expands when the movable part 12 moves in a direction close to the fixed part 11 and gradually shrinks when the movable part 12 moves in a direction away from the fixed part 11 ; the driving component 2 is connected to the stirring component 1 to drive the stirring component 1 to rotate ; one end of the scraping component 3 forms a scraping end for scraping scale on the inner wall of the autoclave body 5 , and the other end of the scraping component 3 is connected to the movable portion 12 .

[0037] In this invention, the stirring component 1 has a fixed part 11 and a movable part 12 . The driving part 2 can be used to drive the fixed part 11 and the movable part 12 to rotate to achieve stirring of the slurry . By adj usting the movement of the movable part 12 relative to the fixed part 11 , the scraping component 3 moves up and down in the autoclave body 5 as the movable part 12 moves , so that the scraping component 3 scrapes at di f ferent positions on the inner wall of the autoclave body 5 , which is beneficial to preventing the formation of scale layers on the inner wall of the autoclave body 5 , and at the same time it also scraped of f the scale on the inner wall , and the descaling ef fect is better ; and when the movable part 12 moves in the direction close to the fixed part 11 , the stirring zone gradually expands , and when the movable part 12 moves in the direction away from the fixed part 11 , the stirring zone gradually shrinks , the width and height of the stirring component 1 can be continuously changed during stirring, and vortex of di f ferent degrees are formed in the autoclave body 5 , which can reali ze stirring of di f ferent liquid levels , which is beneficial to improving the material mixing ef ficiency .

[0038] In this embodiment , please refer to FIG . 1 to 3 , the stirring component 1 also includes a central shaft 13 , through which the movable part 12 and the fixed part 11 are connected, the top of the central shaft 13 is connected to the driving end of the driving component 2 , and the part of the central shaft 13 that passes through the top of the autoclave body 5 is rotatably connected to the autoclave body 5 through a bearing, so that the driving component 2 drives the fixed part 11 and the movable part 12 to rotate synchronously through the central shaft 13 , thereby achieving stirring of the slurry inside the autoclave body 5 . In order to achieve the height and width deformation of the stirring rod, in this embodiment , please refer to FIG . 1 to 3 , the fixed part 11 includes a fixed sleeve 111 , a fixed blade 112 and a fixed base 113 , and the fixed sleeve 111 is sleeved on the end of the central shaft 13 ; the outer side of the fixed sleeve 111 is sequentially provided with a plurality of fixed blades 112 along its circumference . When the central shaft 13 is installed in the autoclave body 5 , one end thereof with the fixed sleeve 111 installed is arranged at the bottom of the internal chamber of the autoclave body 5 , so that the fixed sleeve 111 and the fixed blade 112 are maintained at the bottom of the internal chamber of the autoclave body 5 , thereby stirring the material at the bottom o f the autoclave body 5 .

[0039] The fixed base 113 is arranged above the fixed sleeve 111 and is fixedly sleeved on the central shaft 13 ; the movable part 12 includes a movable base 121 , a movable rod 122 , a movable blade 123 and a connecting rod 124 , wherein the movable rod 122 , the movable blade 123 and the connecting rod 124 are arranged in equal numbers , the movable base 121 is slidably sleeved on the outer side of the central shaft 13 , and is located above the fixed base 113 , and a plurality of connecting rods 124 are sequentially arranged on the outer side along its circumference ; A plurality of movable rods 122 are sequentially arranged on the outer side of the fixed base 113 along its circumference , one end of the movable rod 122 is rotatably connected to the fixed base 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 movable base 121 and a hinge base arranged in the middle of the side of the movable rod 122 , so that the movable base 121 can move up and down, and the connecting rod 124 transmits the force to the movable rod 122 , thereby driving the movable rod 122 to rotate around the fixed base 113 .

[0040] When the movable base 121 moves downward, it drives the outer end of the movable rod 122 to rotate downward through the connecting rod 124 , so that the distance between each movable blade 123 gradually increases , the stirring zone gradually expands , and at the same time , the movable blade 123 moves downward; when the movable base 121 moves upward, it 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 , the stirring zone gradually shrinks , and at the same time , the movable blade 123 moves upward; during implementation, the height of the movable blade 123 can be adj usted according to the liquid level inside the autoclave body 5 to adapt to di f ferent liquid levels and make the stirring more suf ficient .

[0041] Within the rotation range of the movable rod 122 , when the angle formed 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, and the stirring zone is the smallest at this time . When the movable rod 122 rotates to a hori zontal state , the movable rod 122 drives the movable blade 123 to rotate to the lowest position, and the stirring zone is the largest at this time . In order to achieve the limit fixation of the movable rod 122 , a limit plate is arranged below the fixed base 113 , and limit blocks are arranged at positions corresponding to the movable rod 122 on the limit plate . When the movable rod 122 rotates to a hori zontal state , the bottom surface of the movable rod 122 contacts the limit block, so that the movable rod 122 cannot continue to rotate downward .

[0042] Preferably, the movable blade 123 has an arc-shaped structure , the fixed part 11 and the movable part 12 have three or four blades , and the angle of the blade is 12-42 ° .

[0043] Further, in some embodiments , please refer to FIG . 1 and 5 , both sides of the central shaft 13 are provided with slide grooves 131 extending along the movement direction of the movable base 121 , and the inner side of the movable base 121 is provided with two sliders 125 corresponding to the positions of the slide grooves 131 , and the sliders 125 are installed into the slide grooves 131 and are slidably connected to the slide grooves 131 . When the movable base 121 slides up and down on the outside of the central shaft 13 , the sliders 125 slide correspondingly in the slide grooves 131 to improve the stability of the movable base 121 during movement .

[0044] Preferably, in this embodiment , referring to FIG . 1 to 3 , the driving component 2 includes a first motor 21 , which is installed at the top of the autoclave body 5 , and its driving shaft is connected to the central shaft 13 through a coupling, and can drive the central shaft to rotate .

[0045] The movable part 12 is arranged above the fixed part 11 and can move relative to the fixed part 11 to achieve up and down movement in the autoclave body 5 . At the same time , the width and height of the stirring component 1 can be adj usted by up and down movement . In order to achieve the adj ustment of the movable part 12 , in this embodiment , a driving member 4 is also provided . The driving member 4 is connected to the movable part 12 to drive the movable part 12 to move relative to the fixed part 11 .

[0046] In one of the embodiments , please refer to FIGS . 1-3 , the driving member 4 includes a screw 41 , a threaded sleeve 42 and a second motor 43 , the screw 41 is arranged 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 and the central shaft 13 are arranged in parallel , and the screw 41 is rotatably connected to the top wall of the autoclave body 5 through a bearing; the threaded sleeve 42 is sleeved on the outside of the screw 41 and is threadedly connected to the screw 41 , and 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 autoclave body 5 , and its driving 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 , and one side of the threaded sleeve 42 is connected to the movable base 121 , so that the movable base 121 can be driven to move up and down, thereby reali zing the deformation adj ustment of the stirring component 1 .

[0047] Since the movable base 121 is in a rotating state when the stirring component 1 is stirring, in order to prevent the movable base 121 from driving the driving member 4 to deflect and ensure the stability of the driving member 4 , in this embodiment , please refer to FIGS 1-3 and 6 , the top end of the movable base 121 is rotatably connected to a connecting sleeve 126 to achieve the connection between the threaded sleeve 42 and the movable base 121 . Speci fically, an annular groove is provided on the inner side of the connecting sleeve 126 , and a plurality of balls 127 are provided on the top wall and the bottom wall of the annular groove . The movable base 121 is provided with an annular frame 128 rotatably connected to the annular groove on the top, and the annular frame 128 is integrally formed with the movable frame . The annular frame 128 is movably clamped between a plurality of the balls 127 so that the annular frame 128 can rotate in the annular groove , and the balls 127 support the annular frame 128 . When the annular frame 128 rotates , the balls 127 rotate accordingly to reduce the friction of the annular frame 128 during movement , so that the transmission is more stable .

[0048] It should be noted that , in other embodiments , the speci fic form of the driving member 4 is not limited thereto , and may also be other driving structures capable of driving the movable basel21 to move up and down, such as an air cylinder, a telescopic rod or a screw li ft .

[0049] In order to scrape of f the scale on the inner wall of the autoclave body 5 , in this embodiment , please refer to FIGS 1-3 , the 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 , the movable base 121 does not drive the connecting sleeve 126 to rotate when rotating, and the movable base 121 will drive the scraper 32 to move up and down inside the autoclave body 5 by driving the connecting sleeve 126 when moving up and down, and the scraper 32 is used to contact the inner wall of the autoclave body 5 , so as to drive the connecting rod 31 and the scraper 32 to move up and down through the movable base 121 and the connecting sleeve 126 to scrape the inner wall of the autoclave body 5 . Wherein, the stirring component 1 and the scraping component 3 are arranged in a staggered manner, that is , the connecting rod

[0050] 31 and the movable rod 122 are arranged in a staggered manner .

[0051] Since the scraper 32 scrapes the inner wall of the autoclave body 5 by moving up and down, the autoclave body 5 is preferably cylindrical and cubic in structure , please refer to FIG . 4 , and its inner side is a vertical arc surface or a vertical plane , so that the scraper

[0052] 32 can contact the inner wall of the autoclave body 5 by moving up and down translationally to achieve scraping; of course , the scraping component 3 can also adapt to the hori zontal reactor structure . In order to adapt to the situation where the central shaft 13 and the inner wall of the autoclave body 5 are not spaced equally in the height direction, the connecting rod 31 can be replaced by a retractable telescopic drive rod 33 , and the scraper 32 can be driven to extend or shorten by the telescopic drive rod 33 , so that the scraper 32 can contact the irregular inner wall of the autoclave body 5 . For example , in this embodiment , please refer to FIGS 1-3 , the autoclave body 5 is one side of the hori zontal tank body, at this time , there are at least four scraping components 3 corresponding to the four surfaces 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 driving rod 33 , the scraper 32 corresponding to the partition inside the autoclave body 5 is connected to the connecting sleeve 126 through the connecting rod 31 , and the scraper 32 corresponding to the inner wall of the autoclave body 5 is connected to the connecting sleeve 126 through the telescopic driving rod 33 .

[0053] It should be noted that the telescopic driving rod 33 is an air cylinder, a telescopic rod, etc .

[0054] Furthermore , in some embodiments , a liquid level sensor 6 is also installed on the top of the autoclave body 5 . The liquid level sensor 6 is electrically connected to the second motor 43 of the driving member 4 through a sensor, and can drive the second motor 43 according to the liquid level . Among them, the liquid level sensor 6 is preferably an ultrasonic liquid level sensor, which measures the liquid level by emitting ultrasonic waves and detecting the reflected signal . The height of the liquid level can be calculated according to the flight time and speed of the ultrasonic wave .

[0055] Working principle : During implementation, the liquid level of the slurry in the reactor is detected by the liquid level sensor 6, and the second motor 43 is driven according to the liquid level . When the liquid level drops below the movable blade 123 , the movable base 121 is driven to move downward by the second motor 43 , the threaded sleeve 42 and the screw 41 , and the outer end of the movable rod 122 is driven to rotate downward by the connecting rod 124 , so that the distance between each movable blade 123 gradually increases , the stirring zone gradually expands , and at the same time , the movable blade 123 moves downward; when the liquid level rises , the second motor 43 , the threaded sleeve 4 2 and the screw 41 drive the movable base 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 is gradually reduced, and the stirring zone is gradually reduced . At the same time , the movable blade 123 moves upward to adapt to di f ferent liquid levels and stir more thoroughly; when the movable base 121 moves up and down, it can drive the scraper 32 to move up and down synchronously in the autoclave body 5 . When it moves , it can scrape the inner wall of the autoclave body 5 , which is beneficial to prevent the formation of scale layers on the inner wall of the autoclave body 5 , and it can also scrape the scale on the inner wall .

[0056] In the present invention, the stirring component 1 , the driving component 2 and the scraping component 3 are provided, and the driving component 2 is used to drive the fixed part 11 and the movable part 12 to rotate , so as to reali ze the stirring of the slurry; by adj usting the movement of the movable part 12 relative to the fixed part 11 , The scraping component 3 is driven to move up and down in the autoclave body 5 with the movement of the movable part 12 , so that the scraping component 3 scrape at di f ferent positions on the inner wall of the autoclave body 5 , which is beneficial to preventing the formation of scale layers on the inner wall of the autoclave body 5 . At the same time , it can also scrape of f the scale on the inner wall , and the descaling ef fect is better .

[0057] In the present invention, a stirring zone is formed between the blades on the outside 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 , so that the width and height of the stirring component 1 can be continuously changed during stirring, and vortexes of di f ferent degrees are formed in the autoclave body 5 , which can achieve stirring of di f ferent liquid levels , which is beneficial to improving the material mixing ef ficiency .

[0058] In the description of the present application, it should be noted that the terms "up" and "down" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings . This is only for the convenience of describing this application and simpli fying the description, and does not indicate or imply that the device or component referred to must have a speci fic orientation, be constructed and operated in a speci fic orientation . Therefore , it cannot be understood as a limitation of this application . Unless otherwise clearly speci fied and limited, the terms " installed" and " connected" should be understood in a broad sense , for example , it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components . For ordinary technicians in this field, the speci fic meanings of the above terms in this application can be understood according to speci fic circumstances .

[0059] It should be noted that , in this application, relational terms such as " first" and " second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations . Moreover, the terms " include" , " comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process , method, article or device including a series of elements includes not only those elements , but also other elements not explicitly listed, or also includes elements inherent to such process , method, article or device . Without further restrictions , the elements defined by the phrase " comprise a . . . " do not exclude the existence of other identical elements in the process , method, article or device including the elements .

[0060] The speci fic embodiments of the present application described above do not constitute a limitation on the protection scope of the present application . Any other corresponding changes and modi fications made according to the technical concept of the present application should be included in the protection scope of the claims of the present application .

Claims

Claims1 . A stirring structure for the laterite nickel ore autoclave , characteri zed in that it comprises :A stirring component , which has a fixed part and a movable part . The fixed part is used to stir the material at the bottom of the autoclave body, and the movable part is arranged above the fixed part and can move relative to the fixed part , so that a stirring zone is formed between the blades outside the movable part , which gradually expands when the movable part moves in a direction close to the fixed part and gradually shrinks when the movable part moves in a direction away from the fixed part .A driving component , which is connected to the stirring component and used to drive the stirring component to rotate ; andA scraping component , one end of which is formed as a scraping end for scraping scale on the inner wall of the autoclave body, and the other end of which is connected to the movable part .2 . The stirring structure of the laterite nickel ore autoclave according to claim 1 , characteri zed in that it also includes a driving component , wherein the driving component is connected to the movable part to drive the movable part to move relative to the fixed part .3 . The stirring structure of the laterite nickel ore autoclave according to claim 2 , characteri zed in that the driving component comprises a screw, a threaded sleeve and a second motor,The screw is installed 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 sleeved on 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 driving shaft of the second motor is connected to the screw to drive the screw to rotate and drive the threaded sleeve to move along the length direction of the screw .4 . The stirring structure of the laterite nickel ore autoclave according to claim 1 is characteri zed in that the stirring componentalso includes a central shaft , the fixed part and the movable part are both connected to the central shaft , one end of the central shaft is connected to the driving end of the driving component , and the driving component drives the fixed part and the movable part to rotate through the central shaft .5 . The stirring structure of the laterite nickel ore autoclave according to claim 4 is characteri zed in that the fixed part includes a fixed sleeve , a fixed blade and a fixed base , the fixed sleeve is sleeved at the end of the central shaft ; multiple fixed blades are sequentially arranged on the outer side of the fixed sleeve along its circumference ; the fixed base is arranged above the fixed sleeve and is sleeved on the central shaft .6 . The stirring structure of the laterite nickel ore autoclave according to claim 5 is characteri zed in that the movable part includes a movable base , a movable rod, a movable blade and a connecting rod . The movable base is slidably sleeved on the outer side of the central shaft , and a plurality of connecting rods are sequentially arranged on the outer side along its circumference ; a plurality of movable rods are sequentially arranged on the outer side of the fixed base along its circumference , one end of the 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 respectively rotatably connected to the movable base and the side of the movable rod, so as to drive the movable rod to rotate around the fixed base through the up and down movement of the movable base .7 . The stirring structure of the laterite nickel ore autoclave according to claim 6 is characteri zed in that slide grooves extending along the movement direction of the movable base are arranged on both sides of the central shaft , and sliders are arranged on the inner side of the movable base at positions corresponding to the sliding grooves . The sliders are installed into the sliding grooves and are slidably connected to the sliding grooves .8 . The stirring structure of the laterite nickel ore autoclave according to claim 7 is characteri zed in that the top of the movablebase is rotatably connected to a connecting sleeve , an annular groove is provided on the inner side of the connecting sleeve , the top wall and the bottom wal l of the annular groove are both based on the central axis of the central shaft , and a plurality of balls are arranged in an annular array; the top of the movable base is provided with an annular frame rotatably connected to the annular groove , and the annular frame is movably clamped between the plurality of balls .9 . The stirring structure of the laterite nickel ore autoclave according to claim 8 is characteri zed in that the scraping component comprises a connecting rod and a scraper, and the two ends of the connecting rod are respectively connected to the scraper and the connecting sleeve , and the scraper is used to contact the inner wall of the autoclave body, so as to drive the connecting rod and the scraper to move up and down through the movable base and the connecting sleeve to scrape the inner wall of the autoclave body .10 . The stirring structure of the laterite nickel ore autoclave according to claim 4 , characteri zed in that the driving component comprises a first motor, and the first motor is connected to the central shaft to drive the central shaft to rotate .

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