Energy-saving motor and lithium mica ball milling equipment and lithium mica lithium extraction process

Abstract

This invention provides an energy-saving motor, a lithium mica ball mill, and a lithium extraction process from lithium mica, relating to the field of energy-saving grinding technology. The invention includes a grinding motor; the output shaft of the grinding motor is keyway connected to a drive gear, and a driven gear is meshed with one side of the drive gear; the grinding motor is electrically equipped with a load sensing module, which includes a current sensor, a torque sensor, and a power sensor; the load sensing module is electrically connected to a controller via wires, and the controller is electrically connected to an actuator via wires. This solution optimizes electromagnetic design and reduces mechanical losses. Grinding load often fluctuates with material hardness and feed rate. The energy-saving motor, combined with an optimized start-up and speed regulation design, exhibits more significant energy-saving effects under light loads. The energy-saving design meets "dual carbon" compliance requirements, reducing corporate carbon emissions, complying with industrial energy-saving renovation policies, and lowering the environmental compliance costs of the grinding production line.

Description

Technical Field

[0001] This invention relates to the field of energy-saving grinding, and more particularly to energy-saving motors, lithium mica ball milling equipment, and lithium extraction processes from lithium mica. Background Technology

[0002] Lithium mica is a layered aluminosilicate mineral and one of the important lithium resources. Traditional lithium extraction processes mainly rely on high-temperature sulfate roasting, which involves adding sulfate to break down the silicon-oxygen framework and convert lithium into soluble lithium sulfate.

[0003] The production of lepidolite requires the use of ball milling equipment to grind the lepidolite. The planetary ball mill simulates the trajectory of planets orbiting stars. The grinding tank inside the machine revolves around the central axis while also rotating on its own axis, thereby mixing and dispersing the lepidolite.

[0004] In existing technologies, high-speed rotation is often used in the grinding process. As one of the high-energy-consuming devices in industrial production, the grinding motor will generate a lot of load during the rotation process. Under long-term operation, the energy-saving performance of the grinding motor is not very good.

[0005] Therefore, it is necessary to provide energy-saving motors, lepidolite ball milling equipment, and lepidolite lithium extraction processes to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides an energy-saving motor, a lithium mica ball milling equipment, and a lithium extraction process from lithium mica, solving the problem that in related technologies, the grinding motor generates a lot of load during rotation, resulting in poor energy efficiency in grinding.

[0007] To solve the above-mentioned technical problems, the present invention provides an energy-saving motor, including a grinding motor;

[0008] The output shaft of the grinding motor is connected to a drive gear via a keyway, and a driven gear is meshed with one side of the drive gear.

[0009] The grinding motor is electrically equipped with a load sensing module, which includes a current sensor, a torque sensor, and a power sensor. The load sensing module is electrically connected to a controller via wires, and the controller is electrically connected to an actuator via wires. The actuator and the grinding motor are electrically connected.

[0010] The current sensor is connected in series in the three-phase power supply circuit of the grinding motor, the torque sensor is installed on the output shaft of the grinding motor, and the power sensor is connected in parallel at the power supply end of the grinding motor.

[0011] The lithium mica ball mill equipment also includes a base plate, a transmission seat, a mounting plate, grinding components, and a material handling mechanism;

[0012] The transmission seat is fixed to the top of the base plate, the mounting plate is fixed to the top of the transmission seat, and a platform and a grinding seat are fixed to the top of the mounting plate respectively. The grinding seat is rotatably connected to a main turntable, and an auxiliary turntable is rotatably mounted above the main turntable.

[0013] The grinding assembly includes a chassis mounted on top of a secondary turntable. A clamping plate is fixed on the top of the chassis. A storage tank is placed at the center of the top axis of the chassis. A clamping strip is fixed on the upper surface of the chassis and on one side of the storage tank. A fastening plate is installed inside the clamping plate. A threaded disc is threadedly installed in the middle of the fastening plate. Two retaining rings are fixed on the outer wall of the storage tank, and a gap is formed between the two retaining rings.

[0014] The material handling mechanism includes a push cylinder mounted on the upper surface of the platform. A mounting box is installed at the front end of the push cylinder. A first gear and a second gear are rotatably connected inside the mounting box. A trigger gear is connected to the keyway at the shaft of the first gear. A positioning plate is installed on the top of the mounting plate and on one side of the platform. A rack is installed on the outer wall of the positioning plate. A sleeve is fixed on the outer wall of the mounting box. A rotating rod is rotatably connected inside the sleeve. A limiting plate is fixed inside the sleeve and on the outer wall of the rotating rod. A torsion spring is sleeved on the outer wall of the rotating rod and on one side of the limiting plate. A gripper is fixed at the outer end of the rotating rod. A magnetic block is embedded inside the gripper. A top rod is fixed on the side wall of the platform and in the horizontal direction of the push cylinder. A material drop box is provided on the top of the mounting plate and below the gripper.

[0015] Preferably, the first gear and the second gear are adapted to each other, and the trigger gear and the rack mesh with each other.

[0016] Preferably, the gripper and the storage tank are in the same horizontal direction, and the magnetic block and the storage tank are magnetically attracted to each other.

[0017] Preferably, a drive pulley is connected to the transmission seat via a keyway at the center of the driven gear shaft, and a driven pulley is rotatably connected to one side of the drive pulley. A belt is fitted on the outer wall of the drive pulley and the driven pulley. An internal gear ring is installed on the inner wall of the grinding seat. A main gear is connected to the internal gear ring via a keyway at the center of the driven pulley shaft, and auxiliary gears are meshed on both sides of the main gear.

[0018] Preferably, the secondary gear and the internal gear ring mesh with each other, the drive pulley and the mounting plate are rotatably connected, and the shaft of the secondary gear and the shaft of the secondary turntable are connected by a keyway.

[0019] Preferably, it also includes auxiliary mechanisms;

[0020] A bracket is installed on the upper surface of the base plate and above the transmission seat. The auxiliary mechanism includes a lifting electric cylinder installed on the upper surface of the bracket. A lifting sleeve is installed at the bottom end of the lifting electric cylinder. A connecting sleeve is fixedly provided on the inner wall of the lifting sleeve. A sliding rod is slidably connected inside the lifting sleeve and below the connecting sleeve. A limiting sleeve is fixedly provided on the outer wall of the sliding rod. A screw is fixedly provided at the top end of the sliding rod. A return spring is sleeved on the outer wall of the screw. A rotating frame is fixedly provided on the outer wall of the sliding rod. A pointed cone is fixedly provided at the bottom end of the sliding rod.

[0021] Preferably, the length of the rotating frame is equal to the inner diameter of the storage tank, and the screw and the connecting sleeve are connected by threads.

[0022] The lithium extraction process from lepidolite includes the following steps:

[0023] S1: Mechanical activation;

[0024] Lithium mica is crushed to a particle size of 45-75μm and then treated in ethanol medium at 400r / min for 45 minutes using a planetary ball mill to generate a large number of dislocation defects on the 001 crystal plane. During grinding, lithium mica and auxiliary materials need to be placed in a storage tank for planetary ball milling.

[0025] S2: Microwave pretreatment;

[0026] The ground ore sample was placed in a 2.45 GHz microwave field and treated for 8 minutes at a power density of 3 W / g to promote OH... - Group vibrational dissociation;

[0027] Construction of fluidized bed reactor;

[0028] 1. A multi-stage fluidized bed is adopted, consisting of 3 reaction zones;

[0029] 2. The bottom air distribution plate has an opening ratio of 35% and an aperture of 0.8mm;

[0030] 3. Install built-in spiral heat exchange tubes, and pass 300℃ heat transfer oil through the tubes;

[0031] S3: Low-temperature roasting;

[0032] 1. Introduce a mixed gas stream containing 15 vol% water vapor and 5 vol% CO2;

[0033] 2. Apparent gas velocity: 0.35 m / s; bed expansion ratio: 1.8;

[0034] 3. The stay will last 55 minutes;

[0035] Lattice expansion stage:

[0036] H2O molecules entering the interlayer domains trigger lattice expansion, increasing the interlayer spacing from 0.75 nm to 1.02 nm. +Ion migration occurs: K(Li,Al)3Si4O 10 (F, OH)₂ + 2H₂O → K + +Li +

[0037] Lithium release phase:

[0038] 2Li + +H₂O + CO₂ → Li₂CO₃↓ + 2H₂O +

[0039] CO2 and free Li + reaction:

[0040] Simultaneous defluorination reaction occurs: Li−F+OH - →Li−OH+F -

[0041] CaO + 2H₂O → CaF₂↓ + 2OH⁻ −

[0042] S4: Rapid cooling treatment, using a two-stage cyclone cooler to rapidly reduce the material temperature from 420℃ to 80℃.

[0043] Compared with related technologies, the energy-saving motor, lepidolite ball mill equipment, and lepidolite lithium extraction process provided by this invention have the following beneficial effects:

[0044] By collecting relevant parameters of the grinding motor load in real time through sensors, such as current, torque and power, and combining them with the characteristics of the grinding process, the controller automatically adjusts the motor speed, excitation current and starting mode to make the motor operate in the high-efficiency range of the load rate while meeting the grinding efficiency requirements.

[0045] By optimizing electromagnetic design and reducing mechanical losses, the grinding load often fluctuates with the hardness of the material and the feed rate. The energy-saving motor, combined with the optimized start-up and speed regulation design, has a more prominent energy-saving effect under light load. The energy-saving design can meet the "dual carbon" compliance requirements, reduce the carbon emissions of enterprises, comply with the industrial energy-saving transformation policy, and reduce the environmental compliance costs of the grinding production line. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0047] Figure 1 The optimal structural schematic diagram provided for this invention;

[0048] Figure 2 for Figure 1 The diagram shows a side view of the structure.

[0049] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the transmission seat.

[0050] Figure 4 This is a schematic diagram of the energy-saving motor load detection process provided by the present invention;

[0051] Figure 5 This is a schematic diagram of the internal structure of the grinding seat provided by the present invention;

[0052] Figure 6 This is a schematic diagram of the grinding assembly structure provided by the present invention;

[0053] Figure 7 A schematic diagram of the initial working state of the material handling mechanism and storage tank provided by the present invention;

[0054] Figure 8 for Figure 7 The diagram shows the gripper holding the storage tank in operation.

[0055] Figure 9 for Figure 8 The diagram shows the working state of the gripper-controlled storage tank tilting and unloading.

[0056] Figure 10 for Figure 9 The diagram shown is a top-down view of the structure.

[0057] Figure 11 This is a cross-sectional view of the mounting box and sleeve provided by the present invention;

[0058] Figure 12 A schematic diagram showing the location distribution of the auxiliary mechanisms and storage tanks provided by this invention;

[0059] Figure 13 for Figure 12 The diagram shows a detailed structural schematic of the auxiliary mechanism.

[0060] Explanation of icon numbers:

[0061] 1. Base plate; 2. Transmission seat; 3. Mounting plate; 4. Platform.

[0062] 5. Material handling mechanism; 51. Pushing electric cylinder; 52. Mounting box; 53. First gear; 54. Second gear; 55. Trigger gear; 56. Positioning plate; 57. Rack; 58. Sleeve; 59. Rotating rod; 510. Gripper; 511. Magnetic block; 512. Push rod; 513. Limiting plate; 514. Torsion spring.

[0063] 6. Grinding assembly; 61. Chassis; 62. Clamping plate; 63. Fastening plate; 64. Threaded disc; 65. Storage tank; 66. Clamping strip; 67. Clamping ring;

[0064] 7. Bracket;

[0065] 8. Auxiliary mechanism; 81. Lifting electric cylinder; 82. Lifting sleeve; 83. Connecting sleeve; 84. Slide rod; 85. Limiting sleeve; 86. Screw; 87. Return spring; 88. Rotating frame; 89. Cone.

[0066] 9. Feed box, 10. Grinding motor, 11. Drive gear, 12. Driven gear, 13. Drive pulley, 14. Driven pulley, 15. Belt, 16. Grinding seat, 17. Main gear, 18. Internal gear ring, 19. Secondary gear, 20. Main turntable, 21. Secondary turntable. Detailed Implementation

[0067] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0068] This invention provides an energy-saving motor. Please refer to [link / reference]. Figures 1 to 4 Energy-saving motors, including grinding motor 10;

[0069] The output shaft of the grinding motor 10 is connected to a drive gear 11 via a keyway, and a driven gear 12 is meshed with one side of the drive gear 11.

[0070] The grinding motor 10 is electrically equipped with a load sensing module, which includes a current sensor, a torque sensor and a power sensor. The load sensing module is electrically connected to a controller via wires, and the controller is electrically connected to an actuator via wires. The actuator and the grinding motor 10 are electrically connected.

[0071] The current sensor is connected in series in the three-phase power supply circuit of the grinding motor 10, the torque sensor is installed on the output shaft of the grinding motor 10, and the power sensor is connected in parallel at the power supply terminal of the grinding motor 10.

[0072] The sensor collects load-related parameters of the grinding motor 10 in real time, such as current, torque and power. Combined with the characteristics of the grinding process, the controller automatically adjusts the motor speed, excitation current and starting mode to make the motor run in the high-efficiency range of the load rate while meeting the grinding efficiency requirements.

[0073] By optimizing electromagnetic design and reducing mechanical losses, the grinding load often fluctuates with the hardness of the material and the feed rate. The energy-saving motor, combined with the optimized start-up and speed regulation design, has a more prominent energy-saving effect under light load. The energy-saving design can meet the "dual carbon" compliance requirements, reduce the carbon emissions of enterprises, comply with the industrial energy-saving transformation policy, and reduce the environmental compliance costs of the grinding production line.

[0074] The present invention also provides a lithium mica ball milling device.

[0075] Please see Figures 1 to 11 It also includes a base plate 1, a transmission seat 2, a mounting plate 3, a grinding assembly 6, and a material handling mechanism 5;

[0076] The transmission seat 2 is fixed to the top of the base plate 1, the mounting plate 3 is fixed to the top of the transmission seat 2, and the mounting plate 3 is respectively fixed to the top of the base 4 and the grinding seat 16. The grinding seat 16 is rotatably connected to the main turntable 20, and the auxiliary turntable 21 is rotatably installed above the main turntable 20.

[0077] The grinding assembly 6 includes a chassis 61 mounted on top of the sub-rotor 21. A clamping plate 62 is fixed on the top of the chassis 61. A storage tank 65 is placed at the top axis of the chassis 61. A clamping strip 66 is fixed on the upper surface of the chassis 61 and on one side of the storage tank 65. A fastening plate 63 is installed inside the clamping plate 62. A threaded disc 64 is threadedly installed in the middle of the fastening plate 63. Two retaining rings 67 are fixed on the outer wall of the storage tank 65, and a gap is formed between the two retaining rings 67.

[0078] The material handling mechanism 5 includes a push cylinder 51 mounted on the upper surface of the base 4. A mounting box 52 is mounted at the front end of the push cylinder 51. A first gear 53 and a second gear 54 are rotatably connected inside the mounting box 52. A trigger gear 55 is connected to the keyway at the shaft of the first gear 53. A positioning plate 56 is mounted on the top of the mounting plate 3 and on one side of the base 4. A rack 57 is mounted on the outer wall of the positioning plate 56. A sleeve 58 is fixed to the outer wall of the mounting box 52. A rotating rod 59 is rotatably connected inside the sleeve 58. A limiting plate 513 is fixed inside the sleeve 58 and on the outer wall of the rotating rod 59. A torsion spring 514 is sleeved on the outer wall of the rotating rod 59 and on one side of the limiting plate 513. A gripper 510 is fixed at the outer end of the rotating rod 59. A magnetic block 511 is embedded inside the gripper 510. A top rod 512 is fixed on the side wall of the platform 4 and in the horizontal direction of the pushing electric cylinder 51. A material drop box 9 is provided on the top of the mounting plate 3 and below the gripper 510.

[0079] The first gear 53 and the second gear 54 are adapted to each other, and the trigger gear 55 and the rack 57 mesh with each other.

[0080] The gripper 510 and the storage tank 65 are in the same horizontal direction, and the magnetic block 511 and the storage tank 65 are magnetically attracted to each other.

[0081] Please see Figure 7 In the initial state, the gripper 510 is far away from the storage tank 65, so during normal planetary rotary grinding, it can be ensured that the grinding process and the material handling mechanism 5 do not interfere with each other.

[0082] Please see Figure 8 After grinding is completed, the user can start the electric cylinder 51 to control the mounting box 52 to move the gripper 510 close to the storage tank 65. The gripper 510 can be directly inserted into the gap between the two retaining rings 67. When the gripping is stable, the magnetic block 511 inside the gripper 510 will attract the storage tank 65.

[0083] Please see Figure 9 After clamping, the user needs to control the push cylinder 51 to move the mounting box 52 and the gripper 510 towards the rack 57. When the trigger gear 55 contacts the rack 57, it will mesh and rotate. At this time, the trigger gear 55 will drive the first gear 53 to mesh and drive the second gear 54 to drive the entire gripper 510 to control the internal storage tank 65 to flip. During the flipping process, the lithium mica inside the storage tank 65 can be poured out and automatically picked up. After picking up the material, the user can continue to control the gripper 510 to move towards the push rod 512. The push rod 512 will be forceful and the storage tank 65 on the gripper 510 can be separated from the magnetic block 511.

[0084] Please see Figure 11 It is understandable that during the rotation of the second gear 54, the rotating rod 59 will synchronously drive the gripper 510 to rotate. Then, it is installed through the torsion spring 514. Therefore, when the rotating rod 59 rotates, the entire torsion spring 514 will be subjected to force and torsion. When the trigger gear 55 is separated from the rack 57, the torsion spring 514 can quickly ensure that the gripper 510 returns to its initial state.

[0085] This embodiment:

[0086] The device is equipped with a material handling mechanism 5, which can improve grinding efficiency and is suitable for batch processing of lithium mica. Traditional manual clamping and unloading operations are cumbersome. Automatic clamping is controlled by pushing the electric cylinder 51. The clamping force and coaxiality are precisely controllable, avoiding vibration of the storage tank 65 caused by loose manual clamping, ensuring uniform grinding of lithium mica particles and reducing rework rate.

[0087] Secondly, it can reduce the loss of lepidolite material and improve resource utilization. Lepidolite has a low density and is easily adsorbed on the inner wall of the grinding tank. Automatic feeding combined with tilting can increase the cleaning rate of residual material in the tank and avoid waste of high-value lepidolite raw materials. In addition, manual feeding requires manual dumping of materials, which can easily generate dust or mix in impurities. Automatic feeding can ensure the purity of raw materials for subsequent lithium extraction processes.

[0088] Second embodiment:

[0089] Please see Figures 1 to 6 Inside the transmission seat 2, at the center of the driven gear 12, a drive pulley 13 is connected via a keyway. A driven pulley 14 is rotatably connected to one side of the drive pulley 13. A belt 15 is fitted on the outer wall of the drive pulley 13 and the driven pulley 14. An internal gear ring 18 is installed on the inner wall of the grinding seat 16. Inside the internal gear ring 18, at the center of the driven pulley 14, a main gear 17 is connected via a keyway. Secondary gears 19 are meshed on both sides of the main gear 17.

[0090] The secondary gear 19 and the internal gear ring 18 mesh with each other, the drive pulley 13 and the mounting plate 3 are rotatably connected, and the axis of the secondary gear 19 and the axis of the secondary turntable 21 are connected by a keyway.

[0091] Please see Figure 3 When the user starts the grinding motor 10, the drive gear 11 meshes with the driven gear 12 to rotate. The driven gear 12 can drive the drive pulley 13 and the transmission belt 15 to control the driven pulley 14 to rotate.

[0092] Please see Figure 3 and Figure 5 The driven pulley 14 can drive the main gear 17 to rotate. During the rotation of the main gear 17, the meshing transmission side auxiliary gears 19 revolve around the axis of the internal gear ring 18. Furthermore, the auxiliary gears 19 can also rotate on their own axis while revolving around the axis.

[0093] Please see Figure 6 Affected by the rotation of the secondary gear 19, it can simultaneously drive the main turntable 20 and the secondary turntable 21 to rotate while revolving, thus enabling planetary grinding of lithium mica inside the storage tank 65.

[0094] This embodiment:

[0095] The composite motion enhances grinding. The planetary rotation, through a combination of revolution and rotation, generates strong impact, friction, and shear forces on the grinding balls under centrifugal force, which can quickly refine materials to the micron or even nanometer scale. Furthermore, it can be combined with multiple tanks for simultaneous operation, supporting multiple batches of grinding at the same time. The tank capacity is available in a wide range, which can meet the needs of small-batch research and development in the laboratory as well as the needs of large-scale industrial production. The speed ratio of revolution and rotation is precisely controllable, and the movement trajectory of the grinding balls in the tank is regular. The force on the material is consistent, avoiding local over-grinding or insufficient grinding. The finished product has a narrow particle size distribution and uniformity better than traditional ball mills. The tank adopts a sealed design to isolate it from external air and dust pollution. It is especially suitable for materials that are easily oxidized, easily affected by moisture, or have high purity requirements, while reducing material volatilization and loss.

[0096] Third embodiment:

[0097] Please see Figures 12 to 13 It also includes auxiliary mechanisms 8;

[0098] A bracket 7 is installed on the upper surface of the base plate 1 and above the transmission seat 2. The auxiliary mechanism 8 includes a lifting electric cylinder 81 installed on the upper surface of the bracket 7. A lifting sleeve 82 is installed at the bottom end of the lifting electric cylinder 81. A connecting sleeve 83 is fixedly provided on the inner wall of the lifting sleeve 82. A sliding rod 84 is slidably connected inside the lifting sleeve 82 and below the connecting sleeve 83. A limiting sleeve 85 is fixedly provided on the outer wall of the sliding rod 84. A screw 86 is fixedly provided at the top end of the sliding rod 84. A return spring 87 is sleeved on the outer wall of the screw 86. A rotating frame 88 is fixedly provided on the outer wall of the sliding rod 84. A pointed cone 89 is fixedly provided at the bottom end of the sliding rod 84.

[0099] The length of the rotating frame 88 is equal to the inner diameter of the storage tank 65, and the screw 86 and the connecting sleeve 83 are connected by threads.

[0100] Please see Figure 12 In the second embodiment, during operation, the user can move the clamped storage tank 65 to below the auxiliary mechanism 8, at which time the lifting sleeve 82 will be concentric with the storage tank 65.

[0101] Please see Figure 12 and Figure 13 The user can activate the lifting cylinder 81 to control the lifting sleeve 82 and the rotating frame 88 to enter the storage tank 65. When the pointed cone 89 contacts the bottom axis of the storage tank 65, as the lifting sleeve 82 continues to press down, the lifting sleeve 82 drives the internal connecting sleeve 83 to control the threaded control screw 86 to drive the slide bar 84 and the rotating frame 88 to rotate inside the storage tank 65. When the rotating frame 88 rotates, it can scrape the inner wall of the storage tank 65 with its sharp outer edges on both sides. A return spring 87 is designed to ensure that the rotating frame 88 can return to the initial state when the lifting sleeve 82 returns to the original state.

[0102] This embodiment:

[0103] By setting up auxiliary mechanism 8, the recovery rate of lepidolite can be maximized and raw material waste can be reduced. Lepidolite has low density and fine particles. After grinding, it is easily adsorbed on the inner wall of the grinding tank due to static electricity and van der Waals forces. Rotary scraping can thoroughly clean the tank wall, bottom and corner residues, significantly reducing the loss of high-value lepidolite raw materials. If lepidolite remains on the tank wall after grinding, it is easy to absorb moisture and clump or solidify when in contact with air for a long time. It is difficult to clean and cannot be reused. Timely scraping can avoid such waste, especially suitable for batch continuous grinding scenarios. Secondly, it can break up slightly agglomerated particles. Fine lepidolite powder is easy to agglomerate. The mechanical force during the scraping process can break up some loose agglomerates without the need for additional dispersion process, improving the uniformity of the ground product. It also facilitates the feeding operation of the material handling mechanism 5.

[0104] This invention also provides a lithium extraction process from lepidolite.

[0105] The lithium extraction process from lepidolite includes the following steps:

[0106] S1: Mechanical activation;

[0107] Lithium mica is crushed to a particle size of 45-75μm and then treated in ethanol medium at 400r / min for 45 minutes using a planetary ball mill to generate a large number of dislocation defects on the 001 crystal plane. During grinding, lithium mica and auxiliary materials need to be placed in a storage tank 65 for planetary ball milling.

[0108] S2: Microwave pretreatment;

[0109] The ground ore sample was placed in a 2.45 GHz microwave field and treated for 8 minutes at a power density of 3 W / g to promote OH... - Group vibrational dissociation;

[0110] Construction of fluidized bed reactor;

[0111] 1. A multi-stage fluidized bed is adopted, consisting of 3 reaction zones;

[0112] 2. The bottom air distribution plate has an opening ratio of 35% and an aperture of 0.8mm;

[0113] 3. Install built-in spiral heat exchange tubes, and pass 300℃ heat transfer oil through the tubes;

[0114] S3: Low-temperature roasting;

[0115] 1. Introduce a mixed gas stream containing 15 vol% water vapor and 5 vol% CO2;

[0116] 2. Apparent gas velocity: 0.35 m / s; bed expansion ratio: 1.8;

[0117] 3. The stay will last 55 minutes;

[0118] Lattice expansion stage:

[0119] H2O molecules entering the interlayer domains trigger lattice expansion, increasing the interlayer spacing from 0.75 nm to 1.02 nm. + Ion migration occurs: K(Li,Al)3Si4O 10 (F, OH)₂ + 2H₂O → K + +Li +

[0120] Lithium release phase:

[0121] 2Li + +H₂O + CO₂ → Li₂CO₃↓ + 2H₂O +

[0122] CO2 and free Li + reaction:

[0123] Simultaneous defluorination reaction occurs: Li−F+OH - →Li−OH+F -

[0124] CaO + 2H₂O → CaF₂↓ + 2OH⁻ −

[0125] S4: Rapid cooling treatment, using a two-stage cyclone cooler to rapidly reduce the material temperature from 420℃ to 80℃.

[0126] Please refer to the reference again. Figures 1 to 13 The working principle of the energy-saving motor, lepidolite ball milling equipment, and lepidolite lithium extraction process provided by this invention is as follows:

[0127] Step S1: The user places the polished lithium mica and auxiliary materials into the storage tank 65, installs the fastening plate 63 on the clamping plate 62, and rotates the threaded disc 64 to securely fasten the storage tank 65.

[0128] Step S2: Start the grinding motor 10 to control the drive gear 11 to mesh with the driven gear 12 to rotate. The driven gear 12 can drive the drive pulley 13 and the transmission belt 15 to control the driven pulley 14 to rotate. The driven pulley 14 can drive the main gear 17 to rotate. During the rotation of the main gear 17, the meshing transmission of the two auxiliary gears 19 on both sides revolves around the axis of the internal gear ring 18. In addition to revolving, the auxiliary gears 19 can also rotate on their own axis. Affected by the rotation of the auxiliary gears 19, the main turntable 20 and the auxiliary turntable 21 can be driven simultaneously. During the revolving process, they can also rotate on their own axis. Therefore, the lithium mica planetary grinding in the storage tank 65 can be performed.

[0129] Step S3: After grinding, the user can start the push cylinder 51 to control the mounting box 52 to move the gripper 510 closer to the storage tank 65. The gripper 510 can be directly inserted into the gap between the two retaining rings 67. When the gripping is stable, the magnetic block 511 inside the gripper 510 will attract the storage tank 65. After the gripping is completed, the user needs to control the push cylinder 51 to move the mounting box 52 and the gripper 510 towards the rack 57. When the trigger gear 55 contacts the rack 57, it will mesh and rotate. At this time, the trigger gear 55 will drive the first gear 53 to mesh and drive the second gear 54 to drive the entire gripper 510 to control the internal storage tank 65 to flip. During the flipping process, the lithium mica inside the storage tank 65 can be poured out and automatically picked up.

[0130] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A lithium mica ball milling device, characterized in that, The lithium mica ball mill equipment includes an energy-saving motor, as well as a base plate, transmission seat, mounting plate, grinding components, material handling mechanism, and auxiliary mechanisms; The energy-saving motor includes a grinding motor, the output shaft of which is connected to a drive gear via a keyway, and a driven gear is meshed with one side of the drive gear. The grinding motor is electrically equipped with a load sensing module, which includes a current sensor, a torque sensor, and a power sensor. The load sensing module is electrically connected to a controller via wires, and the controller is electrically connected to an actuator via wires. The actuator and the grinding motor are electrically connected. The current sensor is connected in series in the three-phase power supply circuit of the grinding motor, the torque sensor is installed on the output shaft of the grinding motor, and the power sensor is connected in parallel at the power supply terminal of the grinding motor. The transmission seat is fixed to the top of the base plate, the mounting plate is fixed to the top of the transmission seat, and a platform and a grinding seat are fixed to the top of the mounting plate respectively. The grinding seat is rotatably connected to a main turntable, and an auxiliary turntable is rotatably mounted above the main turntable. The grinding assembly includes a chassis mounted on top of a sub-rotor, a clamping plate fixed on top of the chassis, a storage tank placed at the center of the top axis of the chassis, a clamping strip fixed on the upper surface of the chassis and on one side of the storage tank, a fastening plate installed inside the clamping plate, a threaded disc threadedly installed in the middle of the fastening plate, and two retaining rings fixed on the outer wall of the storage tank, forming a gap between the two retaining rings. The material handling mechanism includes a push cylinder mounted on the upper surface of the platform. A mounting box is mounted at the front end of the push cylinder. A first gear and a second gear are rotatably connected inside the mounting box. A trigger gear is connected to the keyway at the shaft of the first gear. A positioning plate is mounted on the top of the mounting plate and on one side of the platform. A rack is mounted on the outer wall of the positioning plate. A sleeve is fixed on the outer wall of the mounting box. A rotating rod is rotatably connected inside the sleeve. A limiting plate is fixed inside the sleeve and on the outer wall of the rotating rod. A torsion spring is sleeved on the outer wall of the rotating rod and on one side of the limiting plate. A gripper is fixed at the outer end of the rotating rod. A magnetic block is embedded inside the gripper. A top rod is fixed on the side wall of the platform and in the horizontal direction of the push cylinder. A material drop box is set on the top of the mounting plate and below the gripper. A bracket is installed on the upper surface of the base plate and above the transmission seat. The auxiliary mechanism includes a lifting electric cylinder installed on the upper surface of the bracket. A lifting sleeve is installed at the bottom end of the lifting electric cylinder. A connecting sleeve is fixedly provided on the inner wall of the lifting sleeve. A sliding rod is slidably connected inside the lifting sleeve and below the connecting sleeve. A limiting sleeve is fixedly provided on the outer wall of the sliding rod. A screw is fixedly provided at the top end of the sliding rod. A return spring is sleeved on the outer wall of the screw. A rotating frame is fixedly provided on the outer wall of the sliding rod. A pointed cone is fixedly provided at the bottom end of the sliding rod.

2. The lithium mica ball milling equipment according to claim 1, characterized in that, The first gear and the second gear are adapted to each other, and the trigger gear and the rack mesh with each other.

3. The lithium mica ball milling equipment according to claim 1, characterized in that, The gripper and the storage tank are in the same horizontal direction, and the magnetic block and the storage tank are magnetically attracted to each other.

4. The lithium mica ball milling equipment according to claim 1, characterized in that, A drive pulley is connected via a keyway inside the transmission seat and at the center of the driven gear shaft. A driven pulley is rotatably connected to one side of the drive pulley. A belt is fitted on the outer wall of the drive pulley and the driven pulley. An internal gear ring is installed on the inner wall of the grinding seat. A main gear is connected via a keyway inside the internal gear ring and at the center of the driven pulley shaft. Secondary gears are meshed on both sides of the main gear.

5. The lithium mica ball milling equipment according to claim 4, characterized in that, The auxiliary gear and the internal gear ring mesh with each other, the drive pulley and the mounting plate are rotatably connected, and the shaft of the auxiliary gear and the shaft of the auxiliary turntable are connected by a keyway.

6. The lithium mica ball milling equipment according to claim 1, characterized in that, The length of the rotating frame is equal to the inner diameter of the storage tank, and the screw and the connecting sleeve are connected by threads.

7. A lithium extraction process from lepidolite, characterized in that, The lithium extraction process from lepidolite includes the lepidolite ball milling equipment as described in any one of claims 1-6, comprising the following steps: S1: Mechanical activation; Lithium mica is crushed to a particle size of 45-75μm and then treated in ethanol medium at 400r / min for 45 minutes using a planetary ball mill to generate a large number of dislocation defects on the 001 crystal plane. During grinding, lithium mica and auxiliary materials need to be placed in a storage tank for planetary ball milling. S2: Microwave pretreatment; The ground ore sample was placed in a 2.45 GHz microwave field and treated for 8 minutes at a power density of 3 W / g to promote OH... - Group vibrational dissociation; Construction of fluidized bed reactor; (1) A multi-stage fluidized bed is adopted, consisting of 3 reaction zones; (2) The bottom air distribution plate has an opening ratio of 35% and an opening diameter of 0.8mm; (3) Install built-in spiral heat exchange tubes and pass 300℃ heat transfer oil through the tubes; S3: Low-temperature roasting; (1) Introduce a mixed gas stream containing 15 vol% water vapor and 5 vol% CO2; (2) Apparent gas velocity 0.35 m / s, bed expansion ratio 1.8; (3) Stay duration: 55 minutes; Lattice expansion stage: H2O molecules entering the interlayer domains trigger lattice expansion, increasing the interlayer spacing from 0.75 nm to 1.02 nm. + Ion migration occurs: K(Li,Al)3Si4O 10 (F, OH)₂ + 2H₂O → K + +Li + Lithium release phase: 2Li + +H2O +CO2→Li2CO3↓+2H + CO2 and free Li + reaction: Simultaneous defluorination reaction occurs: Li−F+OH - →Li−OH+F - CaO + 2H2O → CaF2↓ + 2OH − S4: Rapid cooling treatment, using a two-stage cyclone cooler to rapidly reduce the temperature of the material from 420°C to 80°C.

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