Energy-saving motor, lepidolite grinding equipment and lepidolite impurity removal process thereof

Abstract

The invention provides an energy-saving motor, lepidolite grinding equipment and a lepidolite impurity removal process thereof, and relates to the technical field of energy-saving planetary grinding. The grinding motor is electrically connected with a rotating speed sensor through a wire, the rotating speed sensor is electrically connected with a setting panel and a PLC through wires, and the grinding motor is further electrically connected with an energy storage module through a wire. And the rotating speed sensor, the grinding motor and the PLC are electrically connected in series. According to the scheme, a grinding motor is switched from an electric grinding mode to a power generation energy storage mode, electric energy in an energy storage module can be used for feeding starting and discharging starting in the earlier stage of grinding, and a user can drive the grinding motor through the electric energy in the energy storage module to slowly control a material storage assembly to sequentially rotate to the discharging position before grinding; according to the principle of efficient energy recovery and energy conservation, the total energy consumption of grinding work can be reduced through the processes of motor power generation, electric energy conversion and stored energy recycling in combination with the inertia characteristic of grinding and the braking scene.

Description

Technical Field

[0001] This invention relates to the field of energy-saving planetary grinding, and more particularly to energy-saving electric motors, lithium mica grinding equipment, and their lithium mica impurity removal processes. Background Technology

[0002] As an important hard rock lithium resource, lepidolite faces severe constraints in its lithium extraction process due to fluorine and chlorine impurities. These impurities generate highly corrosive gases during acid leaching, leading to equipment damage and environmental pollution, while also reducing the purity of lithium salt products. To meet the high standards of lithium battery materials, it is necessary to remove fluorine and chlorine impurities.

[0003] During the removal of fluorine and chlorine impurities, the dried lepidolite powder and catalyst need to be ground and mixed in a mortar. A planetary ball mill is used, in which a high-speed rotating storage tank, together with the grinding balls inside the storage tank, grinds the dried lepidolite powder and catalyst.

[0004] In the existing technology, the storage tank rotates at high speed during the grinding process. As one of the high-energy-consuming devices in industrial production, the grinding motor will continue to rotate for a period of time due to the inertia of the medium when the grinding motor stops. The kinetic energy generated by this inertial rotation cannot be well utilized, resulting in energy waste.

[0005] Therefore, it is necessary to provide energy-saving electric motors and lithium mica grinding equipment, as well as lithium mica impurity removal processes, to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides an energy-saving electric motor, a lithium mica grinding equipment, and a lithium mica impurity removal process, which solves the problem in related technologies where the kinetic energy generated by the inertial rotation of the grinding motor when it stops cannot be utilized, resulting in energy waste.

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

[0008] The grinding motor is electrically connected to a speed sensor via a wire. The speed sensor is electrically connected to a setting panel and a PLC via a wire. The grinding motor is also electrically connected to an energy storage module via a wire.

[0009] The speed sensor, grinding motor, and PLC are electrically connected in series, and the setting panel, speed sensor, and grinding motor are also electrically connected in series.

[0010] The settings panel allows you to set the threshold speed of the grinding motor. The speed sensor detects the rotational speed of the grinding motor. When the grinding motor speed decreases, the mode switches from grinding mode to power generation mode. The electrical energy is stored through the energy storage module and used for feeding and unloading.

[0011] The lithium mica grinding equipment also includes a mounting base, a drive mechanism, a material storage assembly, and a mounting frame;

[0012] The mounting base is fixedly provided with a base plate on top, and a mounting sleeve is fixedly provided with a mounting plate on top of the base plate. The mounting bracket is located on the right side of the mounting sleeve, and the grinding motor is installed at the bottom of the base plate and located inside the mounting base.

[0013] The driving mechanism includes a drive gear connected to the output shaft of the grinding motor via a keyway. A toothed ring is fixed on the inner wall of the mounting sleeve. Multiple driven gears are meshed on the outer wall of the drive gear. A first turntable is rotatably connected to the top of the driven gear. A second turntable is connected via a keyway at the axis of the driven gear and above the first turntable.

[0014] The storage assembly includes a storage tank placed at the center of the axis above the second turntable. A mounting plate is installed on the top of the mounting frame, and an electric cylinder is installed on the outer wall of the mounting plate. A sliding frame is horizontally slidably installed on the upper surface of the mounting frame and on the left side of the mounting plate. A feeding motor is installed on the side wall of the sliding frame. A feeding cylinder is fixed inside the sliding frame and on the left side of the feeding motor. A stud is installed inside the feeding cylinder. The feeding motor is used to drive the stud to rotate inside the feeding cylinder to perform feeding work.

[0015] Preferably, the plurality of driven gears are equidistantly distributed in a ring about the axis of the drive gear, the axis of the drive gear is rotatably connected to the base plate, the driven gears and the gear ring mesh with each other, and the outer wall of the first turntable is rotatably connected to the mounting sleeve.

[0016] Preferably, a centering clamp is installed above the second turntable and at the bottom of the storage tank. Side plates are fixed on both sides of the storage tank, and a pressure plate is installed through the top of the side plate. A screw is threadedly connected to the center of the pressure plate.

[0017] Preferably, the output end of the electric cylinder is fixedly installed on the side wall of the sliding frame, and the outer wall of the stud and the inner wall of the feed cylinder are in contact with each other.

[0018] Preferably, it also includes a rotating mechanism and a feeding mechanism;

[0019] A positioning plate is fixed inside the sliding frame and located on one side of the feeding cylinder. The rotating mechanism includes a double-groove pulley rotatably installed inside the positioning plate. A ratchet sleeve is fixed inside the double-groove pulley. A drive rod is connected to the output shaft of the feeding motor via a keyway. A ratchet is connected to the outer wall of the drive rod via a keyway inside the ratchet sleeve. A first pulley is rotatably installed outside the positioning plate and above the double-groove pulley. A first belt is sleeved on the outer walls of the double-groove pulley and the first pulley.

[0020] The feeding mechanism includes a first feeding pipe and a second feeding pipe fixed to the top of the feeding cylinder. A first feeding bin is fixed to the top of the first feeding pipe. A first feeding pipe is fixed to the top of the first feeding bin. A first feeding disc is rotatably connected inside the first feeding bin. A first slot is opened inside the first feeding disc.

[0021] A second feeding hopper is fixedly installed at the top of the second feeding pipe, and a second feeding pipe is fixedly installed at the top of the second feeding hopper. A second feeding disc is rotatably connected inside the second feeding hopper. A second slot is opened inside the second feeding disc. A feeding rod is connected to the axis of the first feeding disc and the second feeding disc by a keyway.

[0022] Preferably, the front end of the drive rod and the stud shaft are connected by a keyway, the ratchet and the ratchet sleeve are connected by a keyway, the outer wall of the feeding rod is rotatably connected to the shafts of the first feeding bin and the second feeding bin, and the shaft of the first pulley and the feeding rod are connected by a keyway.

[0023] Preferably, it also includes a material distribution mechanism;

[0024] A second pulley is rotatably mounted on the outer wall of the positioning plate and below the double-groove pulley. A second belt is sleeved on the outer wall of the second pulley and the double-groove pulley. The material distribution mechanism includes a second rotating rod connected to the shaft of the second pulley via a keyway. A first rotating rod is rotatably connected inside the sliding frame and below the feeding cylinder. A material distribution plate and a groove plate are fixed at both ends of the first rotating rod, respectively. An eccentric plate is fixed at the front end of the second rotating rod. A guide wheel is rotatably connected to one side of the outer wall of the eccentric plate.

[0025] The outer wall of the guide wheel and the inner wall of the groove plate are in close contact with each other, and the outer wall of the second rotating rod and the sliding frame are rotatably connected.

[0026] The process for removing impurities from lepidolite includes the following steps:

[0027] S1: Take lepidolite ore, crush it coarsely with a crusher, then ball mill it, sieve it, collect the fine powder that passes through the sieve, dry it with a forced air, and store it in a sealed container;

[0028] S2: Preparation of a mixed solution: Ce(NO3)3·6H2O and (NH4)6Mo7O 24 • 4H₂O (Ce:Mo = 1.5:1) dissolves in deionized water;

[0029] S3: Immerse γ-Al2O3 in the mixed solution, disperse it by ultrasonication, let it stand, then separate the solid by centrifugation, then calcine it in a muffle furnace, cool it, and then mix it with Na2CO3 by ball milling for later use.

[0030] S4: Fix the quartz tube reactor to the tube furnace, connect the N2 gas line to the steam generator, and connect the outlet to the reactor through the mixing chamber. Connect the reactor outlet to the stainless steel U-shaped condenser and the tail gas alkaline absorption bottle in series.

[0031] S5: Take dry lepidolite powder and catalyst, grind and mix them in a mortar, spread them evenly on a quartz boat and push them into the constant temperature zone of the reactor. When grinding the dry lepidolite powder and catalyst, they need to be placed in a storage tank. Start the drive mechanism to control the storage tank to achieve planetary grinding.

[0032] S6: Turn on N2 to purge and remove air, then program the temperature to rise. When the temperature reaches 300℃, inject water vapor. After the reaction is complete, turn off the steam and cool down to 100℃ under N2 protection, then let it cool naturally to room temperature.

[0033] S7: Collect the solid residue in the quartz boat, rinse the inner wall of the condenser tube with anhydrous ethanol, filter and dry to obtain fluoride chloride salt.

[0034] Compared with related technologies, the energy-saving electric motor, lepidolite grinding equipment, and lepidolite impurity removal process provided by this invention have the following beneficial effects:

[0035] When the grinding motor is switched from electric grinding mode to power generation and energy storage mode, the entire material storage component will continue to rotate due to the inertia of the medium, which will drive the rotor of the grinding motor to rotate, cut the stator magnetic field to generate induced electromotive force, and realize the conversion of kinetic energy into electrical energy. The converted electrical energy is stored through the energy storage module.

[0036] The electrical energy inside the energy storage module can be used for the initial feeding and unloading of materials before grinding. Before grinding, the user can use the electrical energy inside the energy storage module to drive the grinding motor to slowly control the material storage components to rotate to the unloading position in sequence. Based on the principle of energy-efficient recovery and energy saving, the process of motor power generation, electrical energy conversion, energy storage and reuse, combined with the inertial characteristics of grinding and braking scenarios, can reduce the total energy consumption of grinding work. Finally, energy saving in grinding is achieved by improving the motor. Attached Figure Description

[0037] 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.

[0038] Figure 1 The optimal structural schematic diagram provided for this invention; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the mounting base. Figure 3 A schematic diagram of the energy storage process of the grinding motor provided by the present invention; Figure 4 A detailed structural diagram of the drive mechanism provided by the present invention; Figure 5 for Figure 4 The diagram shows the disassembled structure of the drive mechanism; Figure 6 A schematic diagram showing the positional distribution of the rotating mechanism, the feeding mechanism, and the distributing mechanism provided by the present invention; Figure 7 for Figure 6 The diagram shows a detailed structural schematic of the rotating mechanism. Figure 8 for Figure 7 The diagram shows a cross-sectional view of the rotating mechanism. Figure 9 for Figure 8 The enlarged structural diagram at point A is shown below; Figure 10 for Figure 6 The diagram shows a cross-sectional view of the feeding mechanism. Figure 11 for Figure 6 The diagram shown is a schematic of the material distribution mechanism. Figure 12 The flowchart of the lithium mica impurity removal process provided by the present invention is shown.

[0049] Explanation of icon numbers:

[0050] 1. Mounting base; 2. Base plate; 3. Mounting sleeve;

[0051] 4. Drive mechanism; 41. Drive gear; 42. Driven gear; 43. Gear ring; 44. First turntable; 45. Second turntable;

[0052] 5. Material storage assembly; 51. Material storage tank; 52. Centering fixture; 53. Side plate; 54. Pressure plate; 55. Screw;

[0053] 6. Rotating mechanism; 61. Drive rod; 62. Double groove pulley; 63. Ratchet sleeve; 64. First pulley; 65. First belt; 66. Second pulley; 67. Second belt; 68. Ratchet;

[0054] 7. Feeding mechanism; 71. First feeding pipe; 72. First feeding bin; 73. First feeding pipe; 74. First feeding tray; 75. First slot;

[0055] 76. Second feeding pipe; 77. Second feeding bin; 78. Second feeding pipe; 79. Second feeding tray; 710. Second slot; 711. Feeding rod;

[0056] 8. Material distribution mechanism; 81. First rotating rod; 82. Material distribution plate; 83. Groove plate; 84. Eccentric plate; 85. Guide wheel; 86. Second rotating rod;

[0057] 9. Mounting bracket; 10. Mounting plate; 11. Electric cylinder; 12. Sliding frame; 13. Grinding motor; 14. Speed ​​sensor; 15. Energy storage module; 16. Positioning plate; 17. Feeding motor; 18. Feeding cylinder; 19. Stud. Detailed Implementation

[0058] 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.

[0059] This invention provides an energy-saving motor. Please refer to [link / reference]. Figures 1 to 3 Energy-saving electric motors, including grinding motors 13;

[0060] The grinding motor 13 is electrically connected to a speed sensor 14 via a wire. The speed sensor 14 is electrically connected to a setting panel and a PLC via a wire. The grinding motor 13 is also electrically connected to an energy storage module 15 via a wire.

[0061] The speed sensor 14, the grinding motor 13 and the PLC are electrically connected in series, and the setting panel, the speed sensor 14 and the grinding motor 13 are electrically connected in series.

[0062] The setting panel sets the threshold speed of the grinding motor 13. The speed sensor 14 detects the rotation speed of the grinding motor 13. When the speed of the grinding motor 13 decreases, it switches from grinding mode to power generation mode. The electrical energy is stored through the energy storage module 15. The stored electrical energy is used for feeding and unloading starts.

[0063] Please see Figure 3The user sets the speed threshold through the setting panel. The speed sensor 14 constantly detects the speed of the output shaft of the grinding motor 13. When grinding is completed or the operator presses the stop button, the speed sensor 14 detects that the speed of the grinding motor 13 has decreased, and then controls the PLC to control the grinding motor 13 to switch modes.

[0064] When the grinding motor 13 is switched from electric grinding mode to power generation and energy storage mode, the entire material storage component 5 will continue to rotate due to the inertia of the medium, which will drive the rotor of the grinding motor 13 to rotate, cut the stator magnetic field to generate induced electromotive force, realize the conversion of kinetic energy into electrical energy, and store the converted electrical energy through the energy storage module 15.

[0065] The electrical energy inside the energy storage module 15 can be used for the initial feeding and unloading of materials before grinding. Before grinding, the user can use the electrical energy inside the energy storage module 15 to drive the grinding motor 13 to slowly control the material storage component 5 to rotate to the unloading position. Based on the principle of energy-efficient recovery and energy saving, the process of motor power generation, electrical energy conversion, energy storage and reuse, combined with the inertial characteristics of grinding and braking scenarios, can reduce the total energy consumption of grinding work. Finally, energy saving in grinding is achieved by improving the motor method. The core is to recover and reuse the inertial kinetic energy generated during the stopping or deceleration of the grinding motor 13 through energy storage or feedback devices.

[0066] The present invention also provides a lithium mica grinding device.

[0067] Please see Figures 1 to 6 It also includes a mounting base 1, a drive mechanism 4, a material storage assembly 5, and a mounting bracket 9;

[0068] The mounting base 1 is fixedly provided with a base plate 2, the base plate 2 is fixedly provided with a mounting sleeve 3, the mounting bracket 9 is located on the right side of the mounting sleeve 3, and the grinding motor 13 is installed at the bottom of the base plate 2 and located inside the mounting base 1.

[0069] The drive mechanism 4 includes a drive gear 41 connected to the output shaft of the grinding motor 13 via a keyway. A gear ring 43 is fixed on the inner wall of the mounting sleeve 3. Multiple driven gears 42 are meshed on the outer wall of the drive gear 41. A first turntable 44 is rotatably connected to the top of the driven gear 42. A second turntable 45 is connected via a keyway at the axis of the driven gear 42 and above the first turntable 44.

[0070] The storage assembly 5 includes a storage tank 51 placed at the center of the axis above the second turntable 45. The mounting bracket 9 has a mounting plate 10 installed on its top. An electric cylinder 11 is installed on the outer wall of the mounting plate 10. A sliding frame 12 is horizontally slidably installed on the upper surface of the mounting bracket 9 and on the left side of the mounting plate 10. A feeding motor 17 is installed on the side wall of the sliding frame 12. A feeding cylinder 18 is fixed inside the sliding frame 12 and on the left side of the feeding motor 17. A stud 19 is installed inside the feeding cylinder 18. The feeding motor 17 is used to drive the stud 19 to rotate inside the feeding cylinder 18 to perform feeding work.

[0071] Multiple driven gears 42 are equidistantly distributed in a ring about the axis of the drive gear 41. The axis of the drive gear 41 is rotatably connected to the base plate 2. The driven gears 42 and the gear ring 43 mesh with each other. The outer wall of the first turntable 44 is rotatably connected to the mounting sleeve 3.

[0072] A centering clamp 52 is installed above the second turntable 45 and at the bottom of the storage tank 51. Side plates 53 are fixed on both sides of the storage tank 51. A pressure plate 54 is installed through the top of the side plate 53. A screw 55 is threadedly connected to the center of the pressure plate 54.

[0073] The output end of the electric cylinder 11 is fixedly installed on the side wall of the sliding frame 12, and the outer wall of the stud 19 and the inner wall of the feed cylinder 18 are in contact with each other.

[0074] Please see Figure 1 Before loading, each storage component 5 must be in the open position.

[0075] Please see Figure 1 , Figure 4 and Figure 5 Before loading, each storage component 5 needs to be rotated to be horizontal with the electric cylinder 11, and then the electric cylinder 11 is activated to push the sliding frame 12 to move closer to the top of the storage component 5.

[0076] During grinding, the user starts the grinding motor 13 to control the drive gear 41 to rotate. The rotation of the drive gear 41 can mesh with the driven gear 42 to rotate, thereby realizing the drive gear 41 rotating in a fixed position to drive the driven gear 42 to rotate relative to the gear ring 43 in a fixed position, so that the driven gear 42 rotates around the axis of the gear ring 43. During the rotation, it drives the first turntable 44 to revolve as a whole, and then drives the material storage component 5 on the second turntable 45 to rotate to realize planetary ball milling.

[0077] After the storage tank 51 is filled with materials, the user first inserts the pressure plate 54 into the side plate 53, and then rotates the screw 55 to control the storage tank 51 and the second turntable 45 to be subjected to force.

[0078] Please see Figure 6The sliding frame 12 can move the outlet end of the feeding cylinder 18 to above the opening of the storage tank 51. The user starts the feeding motor 17 to control the stud 19 to rotate inside the feeding cylinder 18 to transport the internal dry lithium mica powder and catalyst into the storage tank 51.

[0079] This embodiment:

[0080] By conveying dry lepidolite powder and catalyst through the stud 19, the material ratio can be precisely controlled, ensuring the consistency of the ball milling reaction. The mixing ratio of lepidolite powder and catalyst directly affects the subsequent removal. By setting the stud 19 to rotate and feed, the ratio of lepidolite powder and catalyst in each storage component 5 can be ensured to be completely consistent. Compared with manual feeding or gravity feeding, it avoids the ratio deviation caused by material accumulation and spillage, thereby ensuring a high degree of uniformity in the ball milling effect of all storage components 5.

[0081] Traditional manual batch feeding requires starting and stopping the equipment one by one and manually adding materials, which is inefficient and easily leads to asynchronous ball milling cycles due to differences in operating rhythm. By rotating the storage component 5 and cooperating with the screw 19 to feed materials into each grinding tank in sequence according to the preset program, the feeding is completed without manual intervention, realizing continuous operation.

[0082] Dry lepidolite powder has a fine particle size, which can easily generate dust during the feeding process. This not only causes material loss but may also endanger the health of operators. In addition, some catalysts are corrosive or irritating, and direct contact poses a safety hazard. The screw 19 has a closed conveying structure, which prevents dust leakage and can effectively avoid the loss of lepidolite powder and catalyst, while also preventing the catalyst from coming into direct contact with the human body.

[0083] Second embodiment:

[0084] Please see Figures 6 to 10 It also includes a rotating mechanism 6 and a feeding mechanism 7;

[0085] A positioning plate 16 is fixedly installed inside the sliding frame 12 and on one side of the feeding cylinder 18. The rotating mechanism 6 includes a double-groove pulley 62 rotatably installed inside the positioning plate 16. A ratchet sleeve 63 is fixedly installed inside the double-groove pulley 62. A drive rod 61 is connected to the output shaft of the feeding motor 17 via a keyway. A ratchet 68 is connected to the outer wall of the drive rod 61 via a keyway inside the ratchet sleeve 63. A first pulley 64 is rotatably installed outside the positioning plate 16 and above the double-groove pulley 62. A first belt 65 is sleeved on the outer walls of the double-groove pulley 62 and the first pulley 64.

[0086] The feeding mechanism 7 includes a first feeding pipe 71 and a second feeding pipe 76 fixed to the top of the feeding cylinder 18. A first feeding bin 72 is fixed to the top of the first feeding pipe 71. A first feeding pipe 73 is fixed to the top of the first feeding bin 72. A first feeding disc 74 is rotatably connected inside the first feeding bin 72. A first slot 75 is opened inside the first feeding disc 74.

[0087] The top of the second feeding pipe 76 is fixedly provided with a second feeding bin 77, the top of the second feeding bin 77 is fixedly provided with a second feeding pipe 78, the second feeding bin 77 is rotatably connected to a second feeding disc 79, the second feeding disc 79 is provided with a second slot 710, and the first feeding disc 74 and the second feeding disc 79 are connected to a feeding rod 711 by a keyway at the axis.

[0088] The front end of the drive rod 61 is connected to the core of the stud 19 via a keyway. The ratchet 68 and the ratchet sleeve 63 are connected via a keyway. The outer wall of the feed rod 711 is rotatably connected to the core of the first feed bin 72 and the second feed bin 77. The core of the first pulley 64 is connected to the feed rod 711 via a keyway.

[0089] Please see Figures 6 to 9 During the above operation, the user starts the feeding motor 17 and controls the drive rod 61 to rotate counterclockwise. The counterclockwise rotating drive rod 61 drives the ratchet 68 to rotate counterclockwise, interfering with the force control ratchet sleeve 63, thereby driving the double groove pulley 62 to rotate counterclockwise synchronously. The double groove pulley 62 drives the first belt 65 to control the first pulley 64, while the front end of the drive rod 61 controls the stud 19 to rotate counterclockwise inside the feeding cylinder 18.

[0090] Please see Figure 10 During the rotation of the first pulley 64, the feeding rod 711 drives the first feeding plate 74 and the second feeding plate 79 to rotate within the first feeding bin 72 and the second feeding bin 77. During the rotation, the lithium mica powder and catalyst fed from the first feeding pipe 73 and the second feeding pipe 78 will preferentially enter the first slot 75 and the second slot 710. When the first slot 75 and the second slot 710 rotate to the positions of the first feeding pipe 71 and the second feeding pipe 76, the lithium mica powder and catalyst will be fed into the feeding cylinder 18.

[0091] In another way of working in this embodiment, the user can first rotate the arc surfaces of the first feeding tray 74 and the second feeding tray 79 to the vertical direction, then the first slot 75 and the second slot 710 are in the horizontal direction. At this time, the first feeding bin 72 and the second feeding bin 77 are in a closed state, and the lithium mica powder and catalyst cannot be fed.

[0092] Then the user starts the feeding motor 17 and controls the drive rod 61 to rotate clockwise. During the clockwise rotation, the ratchet 68 rotates clockwise and does not control the ratchet sleeve 63 to rotate. Therefore, the entire feeding mechanism 7 and the bottom distributing mechanism 8 will not work. The drive rod 61 independently controls the stud 19 to rotate clockwise. Since the stud 19 rotates counterclockwise during feeding, the clockwise rotation of the stud 19 at this time plays a retraction role. Therefore, in this working mode, the user can independently clean the stud 19 and the inside of the feeding cylinder 18.

[0093] This embodiment:

[0094] The feeding mechanism 7 can quantitatively feed dry lithium mica powder and catalyst into the feeding cylinder 18. The quantitative feeding can accurately match the volume parameters of each storage component 5, ensuring that the feeding amount is strictly controlled within the optimal filling rate range, allowing the grinding balls to fully contact and collide with the material, maximizing the grinding efficiency. At the same time, the loading amount of all grinding tanks is consistent, ensuring that the working conditions of multiple tanks grinding in parallel are the same, avoiding the problem of inconsistent grinding cycles caused by differences in loading.

[0095] The quantitative feeding mode uses a uniform and quantitative feeding mode to allow the material to enter the gap between the spiral blades of the 19 stud evenly, avoiding conveying jams caused by excessive instantaneous feeding. At the same time, the feeding speed can be adjusted in real time according to the flowability of the material to adapt to lithium mica powder or catalysts with different moisture content and particle size, ensuring the continuity of the entire feeding process.

[0096] Third embodiment:

[0097] Please see Figure 8 and Figure 11 It also includes a material distribution mechanism 8;

[0098] The positioning plate 16 has a second pulley 66 rotatably mounted on its outer wall and below the double groove pulley 62. The second pulley 66 and the outer wall of the double groove pulley 62 are fitted with a second belt 67. The material distribution mechanism 8 includes a second rotating rod 86 with a keyway connected to the axis of the second pulley 66. The sliding frame 12 has a first rotating rod 81 rotatably connected inside and below the feeding cylinder 18. The first rotating rod 81 has a material distribution plate 82 and a groove plate 83 fixed at both ends. The front end of the second rotating rod 86 has an eccentric plate 84 fixed. A guide wheel 85 is rotatably connected to one side of the outer wall of the eccentric plate 84.

[0099] The outer wall of the guide wheel 85 and the inner wall of the groove plate 83 are in contact with each other, and the outer wall of the second rotating rod 86 is rotatably connected to the sliding frame 12.

[0100] Please see Figure 8 and Figure 11In the above embodiment, the double-groove pulley 62 synchronously drives the second belt 67 to control the second pulley 66 to rotate. The second pulley 66 controls the second rotating rod 86 to control the eccentric plate 84 to control the guide wheel 85 to rotate eccentrically. During the eccentric rotation, the control groove plate 83 will follow the eccentric amplitude to adaptively form a reciprocating fan-shaped swing, thereby controlling the material distribution plate 82 to swing reciprocally in a fan shape at the outlet end of the feed cylinder 18. The material falling on the material distribution plate 82 will swing and be evenly dispersed in the storage tank 51.

[0101] This embodiment:

[0102] If the material falls directly from the center, it will form a cone-shaped accumulation at the bottom of the storage tank 51, resulting in uneven material distribution inside the tank. The material in the central area is too thick, while the edge area is almost empty. The movement trajectory of the planetary ball mill covers the entire space inside the tank. The material accumulated in the center will hinder the impact and rolling of the grinding balls, while the edge area without material will cause the grinding balls to collide empty, which will reduce grinding efficiency and increase energy consumption and equipment wear.

[0103] The fan-shaped material distribution plate 82 oscillates back and forth to evenly distribute the falling material to the storage tank 51 in all directions, so that the material forms a uniformly thick layer at the bottom of the tank. The grinding balls can fully contact the material in all areas, and the impact and shearing effects can be evenly applied to each powder particle, which greatly improves the grinding efficiency and shortens the ball milling cycle.

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

[0105] The process for removing impurities from lepidolite includes the following steps:

[0106] S1: Take lepidolite ore, crush it coarsely with a crusher, then ball mill it, sieve it, collect the fine powder that passes through the sieve, dry it with a forced air, and store it in a sealed container;

[0107] S2: Preparation of a mixed solution: Ce(NO3)3·6H2O and (NH4)6Mo7O 24 • 4H₂O (Ce:Mo = 1.5:1) dissolves in deionized water;

[0108] S3: Immerse γ-Al2O3 in the mixed solution, disperse it by ultrasonication, let it stand, then separate the solid by centrifugation, then calcine it in a muffle furnace, cool it, and then mix it with Na2CO3 by ball milling for later use.

[0109] S4: Fix the quartz tube reactor to the tube furnace, connect the N2 gas line to the steam generator, and connect the outlet to the reactor through the mixing chamber. Connect the reactor outlet to the stainless steel U-shaped condenser and the tail gas alkaline absorption bottle in series.

[0110] S5: Take dry lithium mica powder and catalyst, grind and mix them in a mortar, spread them evenly on a quartz boat and push them into the constant temperature zone of the reactor. When grinding the dry lithium mica powder and catalyst, they need to be placed in the storage tank 51. Start the drive mechanism 4 to control the storage tank 51 to achieve planetary grinding.

[0111] S6: Turn on N2 to purge and remove air, then program the temperature to rise. When the temperature reaches 300℃, inject water vapor. After the reaction is complete, turn off the steam and cool down to 100℃ under N2 protection, then let it cool naturally to room temperature.

[0112] S7: Collect the solid residue in the quartz boat, rinse the inner wall of the condenser tube with anhydrous ethanol, filter and dry to obtain fluoride chloride salt.

[0113] Preferably, S1 is coarsely crushed to ≤2mm; ball-milled for 30min, passed through a 200-mesh sieve; and dried at 105℃ with forced air for 4h.

[0114] Preferably, 100g of γ-Al2O3 in S3 is sonicated for 30min, allowed to stand for 24h, and dried at 120℃ for 12h; calcined in a muffle furnace at 450℃ for 3h, and the calcined product is ball-milled with 11.1g of Na2CO3 for 30min.

[0115] Preferably, in S4, a 150℃ evaporator, a constant flow pump of 50ml / min, N2:steam = 3:1, a stainless steel U-shaped condenser tube, a 50℃ water bath, and a 1M NaOH 500ml tail gas bottle are used.

[0116] Preferably, in step S5, 10.0g of lepidolite powder and 1.0g of catalyst are ground in a mortar for 10 minutes;

[0117] Preferably, in step S6, air is removed by purging at 200 ml / min for 10 min, and the temperature is increased to 400°C at 5°C / min; when the temperature reaches 300°C, water vapor is injected at 50 ml / min, and the reaction is kept at a constant temperature for 60 min; after the reaction is completed, the temperature is decreased at 10°C / min.

[0118] Preferably, 20 ml of anhydrous ethanol is added to S7 and dried at 60°C for 2 hours.

[0119] Please refer to the reference again. Figures 1 to 12 The working principle of the energy-saving electric motor, lepidolite grinding equipment, and lepidolite impurity removal process provided by this invention is as follows:

[0120] Step S1: Before loading, each storage component 5 needs to be rotated to be horizontal with the electric cylinder 11. Then, the electric cylinder 11 is started to push the sliding frame 12 to move closer to the top of the storage component 5. The feeding motor 17 is started to control the drive rod 61 to rotate counterclockwise. The counterclockwise rotating drive rod 61 drives the ratchet 68 to rotate counterclockwise, and the interference force controls the ratchet sleeve 63, thereby driving the double groove pulley 62 to rotate counterclockwise synchronously. The double groove pulley 62 drives the first belt 65 to control the first pulley 64, while the front end of the drive rod 61 controls the stud 19 to rotate counterclockwise in the feeding cylinder 18.

[0121] During the rotation of the first pulley 64, the feeding rod 711 drives the first feeding plate 74 and the second feeding plate 79 to rotate within the first feeding bin 72 and the second feeding bin 77. During the rotation, the lithium mica powder and catalyst fed from the first feeding pipe 73 and the second feeding pipe 78 will preferentially enter the first slot 75 and the second slot 710. When the first slot 75 and the second slot 710 rotate to the positions of the first feeding pipe 71 and the second feeding pipe 76, the lithium mica powder and catalyst will be fed into the feeding cylinder 18. The drive rod 61 controls the stud 19 to rotate within the feeding cylinder 18 to transport the internally dried lithium mica powder and catalyst to the storage tank 51.

[0122] Step S2: Start the grinding motor 13 to control the drive gear 41 to rotate. The rotation of the drive gear 41 can mesh with the driven gear 42 to rotate, thereby realizing the drive gear 41 rotating in a fixed position to drive the driven gear 42 to rotate relative to the gear ring 43 in a fixed position. This enables the driven gear 42 to rotate around the axis of the gear ring 43. During the rotation, it drives the first turntable 44 to revolve as a whole. Then, it drives the material storage component 5 on the second turntable 45 to rotate to achieve planetary ball milling.

[0123] 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. An energy-saving electric motor, characterized in that, Including grinding motors; The grinding motor is electrically connected to a speed sensor via a wire. The speed sensor is electrically connected to a setting panel and a PLC via a wire. The grinding motor is also electrically connected to an energy storage module via a wire. The speed sensor, grinding motor, and PLC are electrically connected in series, and the setting panel, speed sensor, and grinding motor are also electrically connected in series. The settings panel allows you to set the threshold speed of the grinding motor. The speed sensor detects the rotational speed of the grinding motor. When the grinding motor speed decreases, the mode switches from grinding mode to power generation mode. The electrical energy is stored through the energy storage module and used for feeding and unloading.

2. A lithium mica grinding equipment, characterized in that, The lithium mica grinding equipment includes the energy-saving electric motor as described in claim 1, and also includes a mounting base, a drive mechanism, a material storage component, and a mounting frame; The mounting base is fixedly provided with a base plate on top, and a mounting sleeve is fixedly provided with a mounting plate on top of the base plate. The mounting bracket is located on the right side of the mounting sleeve, and the grinding motor is installed at the bottom of the base plate and located inside the mounting base. The driving mechanism includes a drive gear connected to the output shaft of the grinding motor via a keyway. A toothed ring is fixed on the inner wall of the mounting sleeve. Multiple driven gears are meshed on the outer wall of the drive gear. A first turntable is rotatably connected to the top of the driven gear. A second turntable is connected via a keyway at the axis of the driven gear and above the first turntable. The storage assembly includes a storage tank placed at the center of the axis above the second turntable. A mounting plate is installed on the top of the mounting frame, and an electric cylinder is installed on the outer wall of the mounting plate. A sliding frame is horizontally slidably installed on the upper surface of the mounting frame and on the left side of the mounting plate. A feeding motor is installed on the side wall of the sliding frame. A feeding cylinder is fixed inside the sliding frame and on the left side of the feeding motor. A stud is installed inside the feeding cylinder. The feeding motor is used to drive the stud to rotate inside the feeding cylinder to perform feeding work.

3. The lithium mica grinding equipment according to claim 2, characterized in that, Multiple driven gears are equidistantly distributed in a ring about the axis of the drive gear. The axis of the drive gear is rotatably connected to the base plate. The driven gears and the gear ring mesh with each other. The outer wall of the first turntable is rotatably connected to the mounting sleeve.

4. The lithium mica grinding equipment according to claim 2, characterized in that, A centering clamp is installed above the second turntable and at the bottom of the storage tank. Side plates are fixed on both sides of the storage tank, and a pressure plate is installed through the top of the side plate. A screw is threadedly connected to the center of the pressure plate.

5. The lithium mica grinding equipment according to claim 2, characterized in that, The output end of the electric cylinder is fixedly installed on the side wall of the sliding frame, and the outer wall of the stud and the inner wall of the feed cylinder are in contact with each other.

6. The lithium mica grinding equipment according to claim 2, characterized in that, It also includes a rotating mechanism and a feeding mechanism; A positioning plate is fixed inside the sliding frame and located on one side of the feeding cylinder. The rotating mechanism includes a double-groove pulley rotatably installed inside the positioning plate. A ratchet sleeve is fixed inside the double-groove pulley. A drive rod is connected to the output shaft of the feeding motor via a keyway. A ratchet is connected to the outer wall of the drive rod via a keyway inside the ratchet sleeve. A first pulley is rotatably installed outside the positioning plate and above the double-groove pulley. A first belt is sleeved on the outer walls of the double-groove pulley and the first pulley. The feeding mechanism includes a first feeding pipe and a second feeding pipe fixed to the top of the feeding cylinder. A first feeding bin is fixed to the top of the first feeding pipe. A first feeding pipe is fixed to the top of the first feeding bin. A first feeding disc is rotatably connected inside the first feeding bin. A first slot is opened inside the first feeding disc. A second feeding hopper is fixedly installed at the top of the second feeding pipe, and a second feeding pipe is fixedly installed at the top of the second feeding hopper. A second feeding disc is rotatably connected inside the second feeding hopper. A second slot is opened inside the second feeding disc. A feeding rod is connected to the axis of the first feeding disc and the second feeding disc by a keyway.

7. The lithium mica grinding equipment according to claim 6, characterized in that, The drive rod front end and the stud shaft are connected by a keyway, the ratchet and the ratchet sleeve are connected by a keyway, the outer wall of the feed rod is rotatably connected to the shafts of the first feed bin and the second feed bin, and the shaft of the first pulley is connected by a keyway to the feed rod.

8. The lithium mica grinding equipment according to claim 6, characterized in that, It also includes a material distribution mechanism; A second pulley is rotatably mounted on the outer wall of the positioning plate and below the double-groove pulley. A second belt is sleeved on the outer wall of the second pulley and the double-groove pulley. The material distribution mechanism includes a second rotating rod connected to the shaft of the second pulley via a keyway. A first rotating rod is rotatably connected inside the sliding frame and below the feeding cylinder. A material distribution plate and a groove plate are fixed at both ends of the first rotating rod, respectively. An eccentric plate is fixed at the front end of the second rotating rod. A guide wheel is rotatably connected to one side of the outer wall of the eccentric plate. The outer wall of the guide wheel and the inner wall of the groove plate are in close contact with each other, and the outer wall of the second rotating rod and the sliding frame are rotatably connected.

9. A process for removing impurities from lepidolite, characterized in that, The lithium mica impurity removal process includes the energy-saving electric motor and lithium mica grinding equipment as described in any one of claims 1-8, and includes the following steps: S1: Take lepidolite ore, crush it coarsely with a crusher, then ball mill it, sieve it, collect the fine powder that passes through the sieve, dry it with a forced air, and store it in a sealed container; S2: Preparation of a mixed solution: Ce(NO3)3·6H2O and (NH4)6Mo7O 24 • 4H₂O (Ce:Mo = 1.5:1) dissolves in deionized water; S3: Immerse γ-Al2O3 in the mixed solution, disperse it by ultrasonication, let it stand, then separate the solid by centrifugation, then calcine it in a muffle furnace, cool it, and then mix it with Na2CO3 by ball milling for later use. S4: Fix the quartz tube reactor to the tube furnace, connect the N2 gas line to the steam generator, and connect the outlet to the reactor through the mixing chamber. Connect the reactor outlet to the stainless steel U-shaped condenser and the tail gas alkaline absorption bottle in series. S5: Take dry lepidolite powder and catalyst, grind and mix them in a mortar, spread them evenly on a quartz boat and push them into the constant temperature zone of the reactor. When grinding the dry lepidolite powder and catalyst, they need to be placed in a storage tank. Start the drive mechanism to control the storage tank to achieve planetary grinding. S6: Turn on N2 to purge and remove air, then program the temperature to rise. When the temperature reaches 300℃, inject water vapor. After the reaction is complete, turn off the steam and cool down to 100℃ under N2 protection, then let it cool naturally to room temperature. S7: Collect the solid residue in the quartz boat, rinse the inner wall of the condenser tube with anhydrous ethanol, filter and dry to obtain fluoride chloride salt.

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