A stirring system for high-pressure reactor of laterite nickel ore

Abstract

The present invention discloses a stirring system for a high-pressure reactor used in lateritic nickel ore processing, which includes a high-pressure reactor and multiple stirring devices. Inside the reactor, multiple baffles are sequentially arranged along the direction of material flow, dividing the cavity of the high-pressure reactor into multiple compartments with the upper parts of adjacent compartments connected. Multiple stirring devices correspond to these compartments, each comprising a rotating shaft, two stirring paddles, and a first driving component. The rotating shaft is installed vertically in the reactor with its lower end extending into the corresponding compartment, and the two stirring paddles are arranged at intervals from top to bottom along the rotating shaft, with the lower paddle reciprocating vertically. The first driving component is connected to the upper end of the rotating shaft to drive the rotation of the shaft. The arrangement of two stirring paddles improves the stirring effect, allowing for thorough mixing of the ore pulp, sulfuric acid, and steam in the reactor, thereby enhancing the reaction efficiency.

Description

[0001] Description

[0002] A STIRRING SYSTEM FOR HIGH-PRESSURE REACTOR OF LATERITE NICKEL ORE

[0003] Field Of The Disclosure

[0004] The present invention relates to the technical field of high-pressure reactor for laterite nickel ore , and speci fically relates to a stirring system for high-pressure reactor for laterite nickel ore .

[0005] Background

[0006] With the vigorous development of China ’ s new energy vehicle industry and the gradual depletion of high-quality nickel and cobalt ore resources , the demand for metals such as Ni , Co , and Mn in new energy ternary materials is increasing . The development of low-grade nickel laterite nickel ore with large reserves has gradually become a hot spot in the industry . The hydrometallurgical route of sul furic acid leaching under high temperature and high pressure is one of the mainstream smelting processes for lateritic nickel ore , and the high-pressure reactor is the main equipment for the smelting of lateritic nickel ore .

[0007] Patent CN117836437A discloses a high-pressure leaching reactor and its control method . The high-pressure leaching reactor comprises a reactor body, a number of stirring devices , and a number of baf fle components . The stirring devices include stirring rods , stirring drive components , a number of stirring blades , and a number of pressure detection components . Each pressure detection component is respectively mounted on each stirring blade to detect the pressure exerted on the blade surface during rotation . The baf fle components include fixed baf fles , telescopic baf fles , and baf fle height adj ustment components .

[0008] However, the stirring ef fect of the stirring mechanism in the existing technology is poor, which is unable to suf ficiently mix the slurry, sul furic acid, and steam inside the reactor, leading to low reaction ef ficiency . Summary

[0009] The purpose of the present invention is to overcome the above-mentioned technical deficiencies , and to propose a stirring system for a high-pressure reactor of lateritic nickel ore , to solve the technical problem of poor stirring ef fect of the stirring device in the existing technology, which cannot fully stir the ore pulp, sul furic acid, and steam in the reactor, resulting in low reaction ef ficiency .

[0010] To achieve the above technical purpose , the present invention adopts the following technical scheme :

[0011] The present invention provides a stirring system for a high-pressure reactor of lateritic nickel ore , which includes :

[0012] A high-pressure reactor, which has multiple baf fles sequentially arranged inside along the direction of material flow, dividing the cavity of the high-pressure reactor into multiple compartments , with the upper parts of adj acent compartments connected . Multiple stirring devices corresponding to the multiple compartments , each stirring device comprising a rotating shaft , two stirring paddles , and a first driving component , the rotating shaft being installed vertically in the reactor with its lower end extending into the corresponding compartment , the two stirring paddles being arranged at intervals from top to bottom along the rotating shaft , with the lower paddle reciprocating vertically, and the first driving component being connected to the upper end of the rotating shaft to drive the rotation of the shaft .

[0013] In some embodiments , the rotating shaft comprises a first rotating shaft , a connecting sleeve , and a second rotating shaft . The first rotating shaft is rotatably mounted in the high-pressure reactor, and it features an installation channel that extends along its axial direction . One of the stirring paddles is located at the lower end o f the first rotating shaft . The connecting sleeve is rotatably mounted within the installation channel and has an internal spline . The second rotating shaft has an external spline on its circumference , is slidably mounted inside the connecting sleeve , and meshes with the internal spline of the connecting sleeve . The other stirring paddle is located at the lower end of the second rotating shaft . The first driving component is connected to the first rotating shaft and the connecting sleeve to drive their rotation . In some embodiments , the two stirring paddles are set to rotate in opposite directions .

[0014] In some embodiments , the first driving component includes a mounting seat , a driving bevel gear, a first driven bevel gear, a second driven bevel gear, and a driving motor . The mounting seat is located in the high-pressure reactor, and the driving bevel gear is rotatably mounted on the mounting seat along a hori zontal axis . The first driven bevel gear is connected to the upper end of the first rotating shaft , and the second driven bevel gear is connected to the upper end of the connecting sleeve . The first driven bevel gear, the driving bevel gear, and the second driven bevel gear are arranged vertically in sequence , with the driving bevel gear meshing with both the first and second driven bevel gears . The main shaft of the driving motor is connected to the driving bevel gear .

[0015] In some embodiments , the stirring system of the lateritic nickel ore high-pressure reactor also includes a second driving component . The second driving component comprises a cylinder, a piston assembly, a gas source device , and a valve . The cylinder is located above the second rotating shaft in the high-pressure reactor and features a piston chamber, a first air intake , an exhaust port , and a second air intake . The piston assembly is slidably mounted inside the piston chamber, with one end extending out of the piston chamber and connected to the upper end o f the second rotating shaft . The piston assembly divides the piston chamber into a first chamber and a second chamber, spaced from top to bottom . The first air intake and the exhaust port are connected to the first chamber, and the second air intake is connected to the second chamber . The first air intake is connected to the gas source device , and the valve is located at the exhaust port , while the second air intake is connected to the high-pressure reactor .

[0016] In some embodiments , the second driving component further includes a detection component and a control device . The detection component is used to detect the stroke of the piston assembly . The control device is electrically connected to the gas source device , the valve , and the detection component and is used to control the operation of the gas source device and the valve based on the detection results .

[0017] In some embodiments , the stirring paddle includes multiple stirring blades arranged at intervals . One end of each stirring blade is fixedly mounted on the rotating shaft , with each stirring blade set at an angle to the hori zontal direction . This design ef fectively prevents liquid residue on the stirring blades and avoids scaling .

[0018] In some embodiments , the width of the stirring blade gradually decreases along the direction away from the rotating shaft .

[0019] In some embodiments , the stirring blade is arc-shaped .

[0020] In some embodiments , the surface of the stirring blade is coated with an anti-scaling coating, which is made of nanometer ceramics .

[0021] Compared to existing technology, the stirring system for the lateritic nickel ore high-pressure reactor provided by the present invention includes a rotating shaft that is installed along the vertical axis of the high-pressure reactor and extends into the corresponding compartment . The two stirring paddles are arranged at intervals from top to bottom along the rotating shaft . The lower stirring paddle reciprocates vertically and is connected to the first driving component at the upper end of the rotating shaft to drive the rotation of the shaft . The two stirring paddles are arranged at intervals vertically, with the upper paddle close to the liquid surface , capable of stirring the slurry at the surface . The lower paddle can also reciprocate up and down whi le rotating, capable of stirring the remaining slurry except for the surface part , that is , stirring the slurry at di f ferent depths , enhancing the stirring capacity and ensuring uni formity . While the stirring paddle reciprocates up and down, it can also disturb the slurry in the vertical direction, serving the purpose of stirring . By setting two stirring paddles , the stirring ef fect is improved, allowing for thorough mixing of the slurry, sul furic acid, and steam in the reactor, thereby improving the reaction ef ficiency . In addition, the surface of the stirring blade has an anti-scaling coating, which can prevent the slurry from scaling on the stirring blade . The structural design of the stirring blade itsel f also prevents scaling, and the combination of the two can ef fectively solve the problem of scaling on the stirring blade .

[0022] The above description is only an overview of the technical solution of the present invention . In order to understand the technical means of the present invention more clearly, the following will be detailed in conj unction with the best embodiment of the invention and the accompanying drawings . The speci fic implementation of the present invention is detailed in the following examples and drawings . Brief Description Of The Drawings

[0023] FIG 1 : Structural schematic diagram of the high-pressure stirring system for lateritic nickel ore reactor in one embodiment of the present invention .

[0024] FIG 2: Left view of the high-pressure stirring system for lateritic nickel ore reactor shown in FIG 1.

[0025] FIG 3: Front view of the stirring device and second driving component shown in FIG 1.

[0026] FIG 4: Cross-sectional view of the stirring device shown in FIG 1. FIG 5: Cross-sectional view of the second driving component shown in FIG 1.

[0027] FIG 6: Three-dimensional diagram of the stirring paddle shown in FIG 1.

[0028] FIG 7: Front view of the stirring paddle shown in FIG 1.

[0029] 1: High-pressure reactor 11: Baffle 12: Compartment;

[0030] 2: Stirring device 21: Rotating shaft 211: First rotating shaft 212: Connecting sleeve 213: Second rotating shaft 22: Stirring paddle 221: Stirring blade 23: First driving component 231: Driving bevel gear 232: First driven bevel gear 233: Second driven bevel gear 234: Driving motor

[0031] 3: Second driving component 31: Cylinder body 311: Piston chamber 312: First air intake 313: Exhaust port 314: Second air intake 32: Piston assembly

[0032] Detailed Description Of Preferred Embodiments

[0033] In order to make the purpose, technical scheme, and advantages of the present invention clearer, the following will further explain the invention in detail in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only for the purpose of explaining the invention and do not limit the invention.

[0034] To solve the technical problem of poor stirring effect of the stirring device in the existing technology, which cannot fully stir the ore pulp, sulfuric acid, and steam in the reactor, resulting in low reaction efficiency, the present invention provides a stirring system for a high-pressure reactor of lateritic nickel ore . By setting two stirring paddles , the stirring ef fect can be improved, and the ore pulp, sul furic acid, and steam in the reactor can be fully stirred, thereby improving the reaction ef ficiency .

[0035] Please refer to FIG 1 , which is a structural schematic diagram of the stirring system for a high-pressure reactor of lateritic nickel ore in an embodiment of the present invention .

[0036] The present invention provides a stirring system for a high-pressure reactor of lateritic nickel ore , including a high-pressure reactor 1 and multiple stirring devices 2 . Inside the high-pressure reactor 1 , multiple baf fles 11 are sequentially arranged along the direction of material flow, dividing the cavity of the high-pressure reactor 1 into multiple compartments 12 , with the upper parts of adj acent compartments connected . Multiple stirring devices 2 correspond to the compartments 12 . Each stirring device 2 includes a rotating shaft 21 , two stirring paddles 22 , and a first driving component 23 . The rotating shaft 21 is installed vertically in the reactor 1 with its lower end extending into the corresponding compartment 12 . The two stirring paddles 22 are arranged at intervals from top to bottom along the rotating shaft 21 , with the lower paddle reciprocating vertically . The first driving component 23 is connected to the upper end of the rotating shaft 21 to drive the rotation of the shaft .

[0037] In this embodiment , as shown in FIGs 1 to 3 , the rotating shaft 21 is installed vertically along the axis and extends into the corresponding compartment 12 . The two stirring paddles 22 are arranged at intervals from top to bottom along the rotating shaft 21 . The lower paddle reciprocates vertically, and the first driving component 23 is connected to the upper end of the rotating shaft 21 to drive its rotation . The two stirring paddles 22 are arranged at intervals vertically, with the upper paddle close to the liquid surface , capable of stirring the slurry at the surface . The lower paddle can reciprocate up and down while rotating, capable of stirring the remaining slurry except for the surface , that is , stirring the slurry at di f ferent depths , enhancing the stirring ability and ensuring uni formity . While the stirring paddles 22 reciprocate up and down, they can also disturb the slurry in the vertical direction, serving the purpose of stirring . By setting two stirring paddles 22 , the stirring ef fect is improved, allowing for thorough mixing of the ore pulp, sul furic acid, and steam in the reactor, thereby improving the reaction ef ficiency .

[0038] In this embodiment , the high-pressure reactor 1 is cylindrical and hori zontally arranged, with opposite ends serving as the feed and discharge ends for material entry and exit . The rotating shaft 21 is installed vertically on the top side wall of the high-pressure reactor 1 , with its lower end extending into the corresponding compartment 12 . The two stirring devices are instal led on the part of the rotating shaft 21 located in the compartment 12 . The upper end of the rotating shaft

[0039] 21 is outside the high-pressure reactor 1 and is connected to the first driving component 23 , which drives the rotation of the rotating shaft 21 , thereby driving the two stirring paddles 22 to rotate and achieve stirring of the slurry .

[0040] In this embodiment, for ease of explanation, the two stirring paddles

[0041] 22 are referred to as the first stirring paddle (upper ) and the second stirring paddle ( lower ) .

[0042] In this embodiment , the height of the baf fle 11 is less than the diameter of the reactor, allowing the upper parts of adj acent compartments 12 to be connected . The height of the baf fle 11 is the height of the slurry in the compartment 12 . The height of the first stirring paddle is slightly lower than the height of the baf f le 11 , allowing the first stirring paddle to be immersed in the slurry and close to the liquid surface for stirring the surface part of the slurry . The second stirring paddle can reciprocate between the first stirring paddle and the bottom of the compartment 12 , stirring the remaining deep slurry evenly .

[0043] In one embodiment , as shown in FIGs 3 to 4 , the rotating shaft 21 includes a first rotating shaft 211 , a connecting sleeve 212 , and a second rotating shaft 213 . The first rotating shaft 211 is installed in the high-pressure reactor 1 and has an installation channel extending along its axis . One of the stirring paddles 22 is located at the lower end of the first rotating shaft 211 . The connecting sleeve 212 is rotatably installed in the installation channel and has an internal spline . The second rotating shaft 213 has an external spline on its circumference and is slidably installed inside the connecting sleeve 212 , engaging with the internal spline of the connecting sleeve 212 . The other stirring paddle 22 is located at the lower end of the second rotating shaft 213 . The first driving component 23 is connected to the first rotating shaft 211 and the connecting sleeve 212 to drive their rotation . In this embodiment , the first rotating shaft 211 is installed vertically on the upper side wall of the high-pressure reactor 1 . The upper end of the first rotating shaft 211 is outside the high-pressure reactor 1 , and the lower end is located in the corresponding compartment 12 . The first stirring paddle is f ixedly installed at the lower end of the first rotating shaft 211 , driven by the first rotating shaft 211 to rotate . The first rotating shaft 211 also has an installation channel co-axially arranged with the first rotating shaft 211 . The connecting sleeve 212 is rotatably installed in the installation channel , and its upper end extends out of the installation channel , meaning the connecting sleeve 212 can rotate relative to the first rotating shaft 211 . The connecting sleeve 212 has an internal spline , and the diameter of the second rotating shaft 213 is adapted to the inner diameter of the connecting sleeve 212 , with an external spline on the circumference of the second rotating shaft 213 . The second rotating shaft 213 is slidably installed inside the connecting sleeve 212 and engages with the internal spline of the connecting sleeve 212 . The upper end of the second rotating shaft 213 is located outside the high-pressure reactor 1 , and the lower end of the second rotating shaft 213 is situated within the compartment 12 . The second stirring paddle is fixedly mounted at the lower end o f the second rotating shaft 213 . By sliding the second rotating shaft 213 vertically, it can drive the second stirring paddle to reciprocate in the vertical direction . The connecting sleeve 212 is spline-engaged with the second rotating shaft 213 , and when the connecting sleeve 212 rotates , it can drive the second rotating shaft 213 to rotate around the vertical axis , thereby driving the second stirring paddle to rotate .

[0044] Speci fically, the installation channel includes a first connection section and a second connection section connected from top to bottom in sequence . The diameter of the first connection section is adapted to the diameter of the connecting sleeve 212 , and the connecting sleeve 212 is rotatably installed inside the first connection section, with its upper end extending out of the first connection section . The diameter of the second connection section is adapted to the diameter of the second rotating shaft 213 , and the second rotating shaft 213 is inserted through the connecting sleeve 212 and the second connection section, with both ends extending out of the connecting sleeve 212 and the second connection section .

[0045] Furthermore , a seal is provided between the second connection section and the second rotating shaft 213 .

[0046] In one embodiment , the two stirring paddles 22 are set to rotate in opposite directions .

[0047] In this embodiment , to further improve the disturbance ef fect , the two stirring paddles 22 are set to rotate in opposite directions .

[0048] In one embodiment , as shown in FIGs 3 to 4 , the first driving component 23 includes an installation seat , a driving bevel gear 231 , a first driven bevel gear 232 , a second driven bevel gear 233 , and a driving motor 234 . The installation seat is located in the high-pressure reactor 1 , and the driving bevel gear 231 is rotatably installed on the installation seat along a hori zontal axis . The first driven bevel gear 232 is connected to the upper end of the first rotating shaft 211 , and the second driven bevel gear 233 is connected to the upper end of the connecting sleeve 212 . The first driven bevel gear 232 , the driving bevel gear 231 , and the second driven bevel gear 233 are arranged vertically in sequence , with the driving bevel gear 231 meshing with the first and second driven bevel gears 232 and 233 , respectively . The main shaft of the driving motor 234 is connected to the driving bevel gear 231 .

[0049] In this embodiment , the installation seat is installed on the top of the high-pressure reactor 1 , and the driving motor 234 and the driving bevel gear 231 are installed on the installation seat . The first driven bevel gear 232 is connected to the upper end of the first rotating shaft 211 , and the second driven bevel gear 233 is connected to the upper end of the connecting sleeve 212 , allowing the first and second driven bevel gears 232 and 233 to be arranged vertically with intervals . The driving bevel gear 231 is located between the first and second driven bevel gears

[0050] 232 and 233 and i s meshed with them . When the driving motor 234 drives the driving bevel gear 231 to rotate , it can simultaneously drive the first driven bevel gear 232 and the second driven bevel gear 233 to rotate , with the first driven bevel gear 232 and the second driven bevel gear

[0051] 233 rotating in opposite directions , thereby achieving the goal of the two stirring paddles 22 rotating in opposite directions .

[0052] In one embodiment , as shown in FIGs 3 to 5 , the stirring system of the lateritic nickel ore high-pres sure reactor also includes a second driving component 3 , which includes a cylinder 31 , a piston assembly 32 , a gas source device , and a valve . The cylinder 31 is located above the second rotating shaft 213 in the high-pressure reactor 1 . The cylinder 31 has a piston chamber 311 , a first air inlet 312 , an exhaust port 313 , and a second air inlet 314 . The piston assembly 32 is slidably installed inside the piston chamber 311 , and one end extends out of the piston chamber 311 and is connected to the upper end of the second rotating shaft 213 . The piston assembly 32 divides the piston chamber 311 into a first chamber and a second chamber, spaced from top to bottom. The first air inlet 312 and the exhaust port 313 are connected to the first chamber, and the second air inlet 314 is connected to the second chamber . The first air inlet 312 is connected to the gas source device , and the valve is located at the exhaust port 313 . The second air inlet 314 is connected to the high-pressure reactor 1 .

[0053] In this embodiment , to drive the second rotating shaft 213 to reciprocate vertically, a second driving component 3 is also set up, which is connected to the second rotating shaft 213 to drive its vertical reciprocation . Speci fically, the second driving component 3 includes a cylinder 31 , a piston assembly 32 , a gas source device , and a valve . The cylinder 31 has a piston chamber 311 that extends vertically, and the lower end of the cylinder 31 has a through-hole connected to the piston chamber 311 . The piston assembly 32 includes a piston head and a piston rod . The diameter of the piston head is adapted to the piston chamber 311 and is slidably installed inside it , sealingly cooperating with the side wall of the piston chamber 311 . The piston chamber 311 is divided by the piston assembly 32 into a first chamber and a second chamber . The second chamber is connected to the through-hole . One end of the piston rod extends into the second chamber from the through-hole and is connected to the piston head, sealingly cooperating with the through-hole . The other end of the piston rod is connected to the upper end of the second rotating shaft 213 . The gas source device is connected to the first chamber through the first air inlet 312 and is used to supply high-pressure gas to the first chamber . The valve is located at the exhaust port 313 and is used to control the opening and closing of the exhaust port . The second chamber i s connected to the cavity inside the high-pressure reactor 1 through the second air inlet 314 .

[0054] When in use , since the high-pressure reactor 1 is in a high-pressure state during operation, the second chamber is also in a high-pressure state because it is connected to the high-pressure reactor 1 . When the gas source device is not working and the valve opens the exhaust port 313 , the high-pressure gas in the second chamber will push the piston head upward, thereby driving the second rotating shaft 213 to move upward After moving a certain distance , the control device controls the gas source device to work, supplying high-pressure gas to the first chamber and closing the exhaust port 313 with the valve . The pressure in the first chamber increases , and when the pressure in the first chamber is greater than the pressure in the second chamber, it will push the piston head downward, thereby driving the second rotating shaft 213 to move downward . Repeating this operation can drive the second rotating shaft 213 to reciprocate .

[0055] It is understood that the volume of the second chamber is much smaller than the volume of the high-pressure reactor 1 , so the volume change of the second chamber has a negligible impact on the high-pressure reactor 1 . It can be considered that the pressure in the second chamber and the high-pressure reactor 1 remains constant , always in a high-pressure state .

[0056] In this embodiment , the gas source device can be a compressor or a booster that can pressuri ze gas , and the valve is an electromagnetic valve .

[0057] In one embodiment, the second driving component 3 also includes a detection component and a control device . The detection component is used to detect the stroke of the piston assembly 32 . The control device is electrically connected to the gas source device , the valve , and the detection component . The control device is used to control the operation of the gas source device and the valve based on the detection results . The control device can control the start and stop of the gas source device and can also control the opening and closing of the valve . When the detection component detects that the piston assembly 32 has moved to the bottom, the control device controls the gas source device to shut down and the valve to open . When the piston assembly 32 moves to the top, the control device controls the gas source device to start and the valve to close . By controlling the gas source device and the valve , the pressure in the first chamber can be controlled, thus achieving the reciprocating motion of the piston, with a high degree of automation .

[0058] In this embodiment , the detection component includes two detection pieces and a trigger piece . The two detection pieces are spaced vertically on the high-pressure reactor 1 , and the trigger piece is located on the piston rod, between the two detection pieces . When the piston rod drives the trigger piece to move , the trigger piece can trigger one of the detection pieces , thereby detecting the piston rod . The distance between the two detection pieces is the stroke of the piston rod .

[0059] In this embodiment , the detection pieces are limit switches or proximity switches , and the trigger piece is a component used in conj unction with limit switches or proximity switches .

[0060] In one embodiment , as shown in FIGs 6 to 7 , the stirring paddle 22 includes multiple stirring blades 221 , which are arranged at intervals . One end of each stirring blade 221 is fixedly mounted on the rotating shaft 21 , and each stirring blade 221 is inclined relative to the hori zontal direction .

[0061] The two stirring paddles 22 can be of the same type or di f ferent types , without limitation in this regard . In this embodiment , the first stirring paddle is a dispersing disc-type stirring paddle 22 , which can perform tangential dispersion of the material . The second stirring paddle has a connection shaft on one side of the stirring blade 221 , which is fixedly connected to the second rotating shaft 213 and gradually inclines upwards away from the second rotating shaft 213 , making the stirring blade 221 inclined relative to the hori zontal direction . This setting allows the second stirring paddle to drive the material to float when rotating, in coordination with the first stirring paddle , which can improve mixing ef ficiency and promote the reaction process .

[0062] In one embodiment , as shown in FIGs 6 to 7 , the width of the stirring blade 221 gradually decreases along the direction away from the rotating shaft 21 .

[0063] In this embodiment , since the high-pressure reactor 1 has a cylindrical structure that extends hori zontally, to avoid interference with the high-pressure reactor 1 when the second stirring paddle moves downward, the width of the stirring blade 221 gradually decreases along the direction away from the rotating shaft 21 .

[0064] In one embodiment , as shown in FIGs 6 to 7 , the stirring blade 221 is arc-shaped, which is conducive to stirring .

[0065] In one embodiment , the surface of the stirring blade 221 is coated with an anti-scaling coating, and the material of the anti-scaling coating is nanometer ceramics .

[0066] In this embodiment , nanometer ceramics have excellent properties such as acid and alkali resistance , high-temperature resistance , corrosion resistance , wear resistance , and high thermal conductivity . After applying and curing the coating on the surface of the stirring blade 221 , it can ef fectively reduce the surface energy of the metal material . When the fluid medium flows through the special microstructure of the coating surface , a special turbulent layer can be formed, which ef fectively prevents scaling on the stirring blade 221 .

[0067] For a better understanding of the invention, the technical scheme of the invention is described in detail below in conj unction with FIGs 1 to 7 :

[0068] The driving motor 234 drives the driving bevel gear 231 to rotate , thereby driving the first driven bevel gear 232 and the second driven bevel gear 233 to rotate . The first driven bevel gear 232 drives the first rotating shaft 211 and the first stirring paddle to rotate , and the second driven bevel gear 233 drives the connecting sleeve 212 , the second rotating shaft 213 , and the second stirring paddle to rotate . At the same time , the control device controls the gas source device not to work and the valve to open the exhaust port 313 . The high-pressure gas in the second chamber will push the piston head upward, thereby driving the second rotating shaft 213 to move upward . After moving a certain distance , the control device controls the gas source device to work, supplying high-pressure gas to the first chamber, and controls the valve to close the exhaust port 313 . The pressure in the first chamber increases , and when the pressure in the first chamber is greater than the pressure in the second chamber, it will push the piston head downward, thereby driving the second rotating shaft 213 to move downward . Repeating the above operation can drive the second rotating shaft 213 to reciprocate .

[0069] The speci fic embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention . Any other corresponding changes and modi fications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention .

Claims

What Is Claimed Is1 . A stirring system for high-pressure autoclave for lateritic nickel ore , characteri zed in that it comprises :A high-pressure reactor, which has multiple baf fles sequentially arranged inside along the direction of material flow, dividing the cavity of the high-pressure reactor into multiple compartments , with the upper parts of adj acent compartments connected; Multiple stirring devices corresponding to the multiple compartments , each stirring device comprising a rotating shaft , two stirring paddles , and a first driving component , the rotating shaft being installed vertically in the reactor with its lower end extending into the corresponding compartment , the two stirring paddles being arranged at intervals from top to bottom along the rotating shaft , with the lower paddle reciprocating vertically, and the first driving component being connected to the upper end of the rotating shaft to drive the rotation of the shaft .2 . The high-pressure stirring system for lateritic nickel ore reactor as claimed in claim 1 , characteri zed in that the rotating shaft comprises a first rotating shaft , a connecting sleeve , and a second rotating shaft , the first rotating shaft being installed in the high-pressure reactor, the first rotating shaft having an installation channel extending along its axis , one of the stirring paddles being located at the lower end of the first rotating shaft , the connecting sleeve being rotatably installed in the installation channel , the connecting sleeve having an internal spline , the second rotating shaft having an external spline on its periphery, the second rotating shaft being s lidably installed inside the connecting sleeve and engaging with the internal spline of the connecting sleeve , the other stirring paddle being located at the lower end of the second rotating shaft , and the first driving component being connected to the first rotating shaft and the connecting sleeve to drive the rotation of the first rotating shaft and the connecting sleeve .3 . The stirring system for high-pressure lateritic nickel ore reactor as claimed in claim 2 , characteri zed in that the two stirring paddles are set to rotate in opposite directions .4 . The stirring system for high-pressure lateritic nickel ore reactor as claimed in claim 3 , characteri zed in that the first driving component includes an installation seat , a driving bevel gear, a first driven bevel gear, a second driven bevel gear, and a driving motor, the installation seat being located in the high-pressure reactor, the driving bevel gear being rotatably installed on the installation seat along a hori zontal axis , the first driven bevel gear being connected to the upper end o f the first rotating shaft , the second driven bevel gear being connected to the upper end o f the connecting sleeve , the first driven bevel gear, the driving bevel gear, and the second driven bevel gear being arranged vertically in sequence , the driving bevel gear being meshed with the first and second driven bevel gears , and the main shaft of the driving motor being connected to the driving bevel gear .5 . The stirring system for high-pressure lateritic nickel ore reactor as claimed in claim 2 , characteri zed in that the system further includes a second driving component , which comprises a cylinder, a piston assembly, a gas source device , and a valve , the cylinder being located above the second rotating shaft in the high-pressure reactor, the cylinder having a piston chamber, a first air inlet , an exhaust port , and a second air inlet , the piston assembly being slidably installed in the piston chamber with one end extending out of the piston chamber and connected to the upper end of the second rotating shaft , the piston assembly dividing the piston chamber into a first chamber and a second chamber spaced from top to bottom, the first air inlet and the exhaust port being connected to the first chamber, the second air inlet being connected to the second chamber, the first air inlet being connected to the gas source device , the valve being located at the exhaust port , and the second air inlet being connected to the high-pressure reactor .6 . The stirring system for high-pressure lateritic nickel ore reactor as claimed in claim 5 , characteri zed in that the second driving component further includes a detection component and a control device , the detection component being used to detect the stroke of the piston assembly, the control device being electrically connected to the gas source device , the valve , and the detection component , and the control device being used to control the operation of the gas source device and the valve based on the detection results .7 . The stirring system for high-pressure lateritic nickel ore reactor as claimed in claim 1 , characteri zed in that the stirring paddle comprises a plurality of stirring blades , which are arranged at intervals , with one end of each stirring blade fixedly mounted on the rotating shaft , and each stirring blade is inclined relative to the hori zontal direction .8 . The stirring system for high-pressure lateritic nickel ore reactor as claimed in claim 7 , characteri zed in that the width of the stirring blades gradually decreases along the direction away from the rotating shaft .9 . The stirring system for high-pressure lateritic nickel ore reactor as claimed in claim 7 , characteri zed in that the stirring blades are arc-shaped .10 . The high-pressure stirring system for lateritic nickel ore reactor as claimed in claim 7 , characteri zed in that the surface of the stirring blades is coated with an anti-scaling coating, and the material of the anti-scaling coating is nanometer ceramics .

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