Energy-saving motor set, potassium-containing precipitate ball-milling equipment and lithium precipitation mother liquor separation process

Abstract

The invention provides an energy-saving motor set, potassium-containing precipitate ball milling equipment and a lithium precipitation mother liquor separation process, and relates to the technical field of energy-saving grinding, and the energy-saving motor set comprises a bottom plate, a driving mechanism and a positioning assembly; the driving mechanism comprises a mounting seat mounted on the upper surface of the bottom plate, a motor is mounted on the upper surface of the mounting seat through bolts, a driving gear is connected to a key groove of an output shaft of the motor, a driving belt wheel and a driven belt wheel are rotationally connected to the interior of the mounting seat, and the outer wall of the driving belt wheel and the outer wall of the driven belt wheel are sleeved with belts. According to the scheme, electricity is generated through inertia rotation of a motor, then electric energy is converted into an energy storage state, finally, the motor can be started to work, the core is that inertia kinetic energy generated in the shutdown or deceleration process of the motor is converted into the electric energy through the motor, and the inertia kinetic energy mainly comes from revolution combined with rotation and rotation inertia for storing a grinding tank, a grinding medium and materials. And the energy is recycled through an energy storage or feedback device, so that energy conservation of motor grinding is finally realized.

Description

Technical Field

[0001] This invention relates to the field of energy-saving grinding, and more particularly to energy-saving motor sets, ball milling equipment for potassium-containing precipitates, and lithium precipitation mother liquor separation process. Background Technology

[0002] Rubidium and cesium play an indispensable role in the development of high-tech industries such as aerospace, defense, and new energy. They are basic raw materials for modern high-tech research and development, mainly occurring in association with rare metals or salt minerals such as lithium, beryllium, niobium, and tantalum. Lithium mica ore contains a certain amount of rubidium and cesium. However, most lithium mica companies currently do not extract the associated rare metal elements from mica ore after extracting lithium, resulting in a huge waste of resources. Potash fertilizer plays an important role in crop growth, reducing virus invasion, and ensuring food security. Therefore, it is essential to rationally integrate potassium resources, reduce unnecessary waste, and expand the recycling and utilization of potassium resources in a multilateral manner.

[0003] In the potassium precipitation stage, ball milling equipment is needed to grind the potassium-containing precipitate. 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 strongly impacting, grinding and crushing the potassium-containing precipitate, thus achieving the crushing, mixing and dispersion of the material.

[0004] In existing technologies, high-speed rotary grinding is often used during the grinding process. When the motor stops after grinding, the potassium-containing precipitate in the storage tank and the grinding balls are affected by inertia. Therefore, during the deceleration process from high speed to low speed, the motor will form a period of inertial rotation. The kinetic energy generated by this rotation cannot be well utilized, resulting in energy waste and is not conducive to energy-saving grinding.

[0005] Therefore, it is necessary to provide energy-saving motor units, potassium-containing precipitate ball milling equipment, and lithium precipitation mother liquor separation processes to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides an energy-saving motor set, a ball milling device for potassium-containing precipitates, and a process for separating lithium precipitation mother liquor, which solves the problems of traditional grinding methods wasting a lot of kinetic energy and poor energy efficiency of motors during operation in related technologies.

[0007] To solve the above-mentioned technical problems, the present invention provides an energy-saving motor unit, including a base plate and a drive mechanism;

[0008] The drive mechanism includes a mounting base mounted on the upper surface of the base plate. A motor is mounted on the upper surface of the mounting base by bolts. A drive gear is connected to the keyway of the motor output shaft. A drive pulley and a driven pulley are rotatably connected inside the mounting base. A belt is sleeved on the outer wall of the drive pulley and the driven pulley. A driven gear is connected to the keyway at the top of the mounting base and at the center of the drive pulley shaft.

[0009] The motor is electrically connected to a speed sensor via a wire, the speed sensor is electrically connected to a bidirectional converter via a wire, and the bidirectional converter is electrically connected to an energy storage module via a wire.

[0010] The driving gear and the driven gear mesh with each other, and the main gear and the four planetary gears mesh with each other.

[0011] The ball milling equipment for potassium-containing precipitates also includes a positioning component;

[0012] A circular seat is fixed on the top of the mounting base and on the side of the motor. A toothed ring is fixed on the inner wall of the circular seat. Four planetary gears are meshed on the inner wall of the toothed ring. A main gear is connected to the keyway inside the circular seat and at the center of the driven gear shaft.

[0013] The positioning assembly includes a main turntable rotatably connected to the inner wall of the circular base and located above the gear ring. Four auxiliary turntables are rotatably connected to the top of the main turntable. A positioning plate is installed on the top of each of the four auxiliary turntables. Four sliding grooves are opened inside the positioning plate. A slider is slidably connected inside the sliding groove. A positioning plate is rotatably connected to the top of the slider through a torsion spring. A side plate is rotatably connected to the inside of the positioning plate through a torsion spring. A positioning bolt is threadedly connected to the bottom of the slider and to one side of the positioning plate. A storage container is placed on the upper surface of the positioning plate. A top cover is provided on the top of the storage container.

[0014] Preferably, the four planetary gears are equidistantly arranged in a ring about the axis of the main gear, and the axes of the four planetary gears are all connected by keyways to the axes of the four auxiliary turntables.

[0015] Preferably, the slide groove has a "T" shaped cross-section, and the positioning bolt passes through the slider and extends to the bottom of the slide groove.

[0016] Preferably, auxiliary components are also included;

[0017] The auxiliary component includes a fixing plate fixed to both sides of the positioning plate. The fixing plate has a slot inside, and a reinforcing plate is slidably installed inside the slot. A screw is threaded to the center of the reinforcing plate. A top plate is placed on the upper surface of the top cover. A sleeve is installed at the center of the top plate. A sliding rod is slidably connected inside the sleeve. A pressure plate is fixed to the top of the sliding rod. A conical column is fixed inside the sleeve and at the bottom of the sliding rod. A return spring is sleeved on the outer wall of the sliding rod. Measuring rods are slidably connected inside the sleeve and on both sides of the conical column. Guide wheels are installed at opposite ends of the two measuring rods. Limiting springs are sleeved on the outer walls of both measuring rods. Scale strips are opened inside both measuring rods.

[0018] Preferably, the two sides of the cone column are in contact with the outer walls of the two guide wheels, and the two ends of the limiting spring are fixedly connected to the sleeve and the guide wheels.

[0019] Preferably, it also includes a wall scraping mechanism;

[0020] A mounting bracket is bolted to the upper surface of the base plate and located outside the drive mechanism. The wall scraping mechanism includes an electric cylinder mounted on the upper surface of the mounting bracket. An electric turntable is mounted at the bottom output end of the electric cylinder, and a rotatable scraper is mounted at the bottom end of the electric turntable.

[0021] Preferably, the length of the scraper is the same as the inner diameter of the storage tank, and the scraper and the storage tank are in the same vertical direction.

[0022] The process for separating lithium precipitation mother liquor includes the following steps:

[0023] S1: Extraction stage;

[0024] First, the lithium precipitation mother liquor is subjected to multi-stage countercurrent extraction to obtain extract and Cs extraction residue. Then, the Cs extraction residue is subjected to multi-stage countercurrent extraction to obtain extract and Rb extraction residue.

[0025] S2: Washing stage;

[0026] The above extract was washed in multiple countercurrent stages with washing liquid. After the system stabilized, the organic phase and washing residue were obtained. The washing residue was returned to the upstream circulation for collection.

[0027] S3: Back-extraction stage;

[0028] The collected organic phase is subjected to multi-stage back-extraction with back-extraction liquid to obtain a new organic phase and back-extraction residue. The organic phase is then returned to the extraction stage.

[0029] S4: CsCl and RbCl preparation stage;

[0030] The back-extraction residue containing high concentrations of Cs / Rb was concentrated, evaporated, crystallized, and dried to obtain CsCl and RbCl salts;

[0031] S5: Alum precipitation stage;

[0032] Add an alum precipitant to the Rb residue, filter to obtain a potassium-containing precipitate, and then proceed with drying, ball milling, elution and filtration to obtain wet potassium ferric alum and elution residue. The elution residue is returned to the alum precipitation stage. The wet potassium ferric alum is dried to obtain potassium ferric alum (KFe3(SO4)2(OH)6). The ball milling stage requires ball milling in a storage tank.

[0033] Compared with related technologies, the energy-saving motor unit, potassium-containing precipitate ball milling equipment, and lithium precipitation mother liquor separation process provided by this invention have the following beneficial effects:

[0034] The system generates electricity through the inertial rotation of the motor, then converts the electrical energy into energy storage, and finally reuses it to start the motor. The core is to convert the inertial kinetic energy generated during the motor's shutdown or deceleration. The inertial kinetic energy mainly comes from the rotational inertia of the grinding jar, grinding media, and materials, combined with the revolution and rotation of the motor. This energy is converted into electrical energy by the motor and then recovered and reused through energy storage or feedback devices, ultimately achieving energy saving in motor grinding.

[0035] It can also solve the problems of storage tank center of gravity shift and main and auxiliary turntable speed fluctuations, avoid the asymmetric centrifugal force generated during rotation, avoid overall equipment vibration, and reduce vibration loss, friction loss, ineffective grinding energy consumption, and additional energy consumption for equipment maintenance and dynamic adjustment by achieving rotational balance and uniform force. It can significantly improve energy utilization efficiency, achieve mechanical energy saving, and make the actual output power of the motor closer to the effective grinding power. Attached Figure Description

[0036] 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.

[0037] Figure 1 The optimal structural schematic diagram provided for this invention;

[0038] Figure 2 for Figure 1 The diagram shows a side view of the structure.

[0039] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the drive mechanism.

[0040] Figure 4 for Figure 3 The diagram shows the connection structure between the main gear and the planetary gears.

[0041] Figure 5 The present invention provides a flowchart of the motor energy-saving process.

[0042] Figure 6 This is a schematic diagram of the positioning component structure provided by the present invention;

[0043] Figure 7 for Figure 6 The diagram shows the disassembled structure of the positioning component;

[0044] Figure 8 for Figure 7 The diagram shows the initial working state of the storage tank and positioning assembly.

[0045] Figure 9 for Figure 8 The diagram shows the positioning component's working state when positioning the storage tank.

[0046] Figure 10 A schematic diagram of the flipping motion trajectory of the positioning plate and side plate provided by the present invention;

[0047] Figure 11 This invention provides a schematic diagram of the cross-sectional structure of the auxiliary component;

[0048] Figure 12 for Figure 11 The diagram shows the working status of the auxiliary components.

[0049] Figure 13 for Figure 12 The enlarged structural diagram at point A is shown below;

[0050] Figure 14 This is a schematic diagram of the working state of the wall scraping mechanism provided by the present invention;

[0051] Figure 15 A schematic diagram of the process flow for separating rubidium and cesium potassium from lithium precipitation mother liquor provided by the present invention.

[0052] Explanation of icon numbers:

[0053] 1. Base plate;

[0054] 2. Mounting bracket;

[0055] 3. Drive mechanism; 31. Mounting base; 32. Motor; 33. Drive gear; 34. Driven gear; 35. Drive pulley; 36. Driven pulley; 37. Belt; 38. Round seat; 39. Gear ring; 310. Main gear; 311. Planetary gear.

[0056] 4. Positioning components; 41. Main turntable; 42. Secondary turntable; 43. Positioning plate; 44. Slide groove; 45. Slider; 46. Positioning bolt; 47. Positioning plate; 48. Side plate; 49. Storage tank; 410. Top cover.

[0057] 5. Auxiliary components; 51. Fixing plate; 52. Groove; 53. Reinforcing plate; 54. Screw; 55. Top plate; 56. Sleeve; 57. Slide rod; 58. Pressure plate; 59. Return spring; 510. Conical column; 511. Guide wheel; 512. Limit spring; 513. Measuring rod; 514. Scale bar.

[0058] 6. Scraping mechanism; 61. Electric cylinder; 62. Electric turntable; 63. Scraper. Detailed Implementation

[0059] 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.

[0060] This invention provides an energy-saving motor set. Please refer to [link / reference]. Figures 1 to 5 It includes a base plate 1 and a drive mechanism 3;

[0061] The drive mechanism 3 includes a mounting base 31 mounted on the upper surface of the base plate 1. A motor 32 is bolted to the upper surface of the mounting base 31. A drive gear 33 is connected to the output shaft of the motor 32 via a keyway. A drive pulley 35 and a driven pulley 36 are rotatably connected inside the mounting base 31. A belt 37 is fitted on the outer wall of the drive pulley 35 and the driven pulley 36. A driven gear 34 is connected to the top of the mounting base 31 at the axis of the drive pulley 35 via a keyway.

[0062] The motor 32 is electrically connected to a speed sensor via a wire. The speed sensor is electrically connected to a bidirectional converter via a wire. The bidirectional converter is electrically connected to an energy storage module via a wire.

[0063] The drive gear 33 and the driven gear 34 mesh with each other, and the main gear 310 and the four planetary gears 311 mesh with each other.

[0064] Please see Figure 3 and Figure 4The user starts the motor 32, which controls the drive gear 33 to mesh with the driven gear 34, driving the drive pulley 35 to rotate within the mounting base 31. When the drive pulley 35 rotates, the transmission belt 37 drives the driven pulley 36 to control the main gear 310 to rotate within the round base 38. When the main gear 310 rotates, it drives the four planetary gears 311 to revolve around the gear ring 39. Furthermore, during the revolve of the planetary gears 311, they will also rotate on their own axis.

[0065] Please see Figure 4 and Figure 6 During the revolution and rotation of the four planetary gears 311, the main turntable 41 will be driven to revolve synchronously, and the planetary gears 311 will drive the four auxiliary turntables 42 to rotate, thereby controlling the revolution and rotation of the four positioning components 4.

[0066] Please see Figure 5 The user can set a maximum speed value on the speed sensor. When the motor 32 is rotating normally at the set maximum speed, the speed sensor will detect it at all times. Once the motor 32 stops grinding and the speed sensor detects that the speed has reached the minimum threshold, the motor 32 will generate electrical energy by inertial rotation. The generated electrical energy is transmitted to the energy storage module for energy storage through the bidirectional converter. The PLC can control the energy storage module to use the internal power to drive the motor 32, thereby improving the energy saving of the motor 32.

[0067] In summary, the system generates electricity through the inertial rotation of motor 32, then converts the electrical energy into energy storage, and finally reuses it to start motor 32. The core is to utilize the inertial kinetic energy generated during the stopping or deceleration of motor 32. This inertial kinetic energy mainly comes from the rotational inertia of the grinding jar, grinding media, and materials, combined with the revolution and rotation of the jar. Motor 32 converts this energy into electrical energy, which is then recovered and reused through energy storage or feedback devices, ultimately achieving energy saving in the grinding process of motor 32.

[0068] The present invention also provides a ball milling device for potassium-containing precipitates.

[0069] Please see Figures 1 to 10 The potassium-containing precipitate ball milling equipment also includes positioning component 4;

[0070] A circular seat 38 is fixedly provided on the top of the mounting base 31 and on one side of the motor 32. A toothed ring 39 is fixedly provided on the inner wall of the circular seat 38. Four planetary gears 311 are meshed and connected to the inner wall of the toothed ring 39. A main gear 310 is connected to the inside of the circular seat 38 and at the center of the driven gear 34 through a keyway.

[0071] The positioning assembly 4 includes a main turntable 41 rotatably connected to the inner wall of the round seat 38 and located above the toothed ring 39. Four auxiliary turntables 42 are rotatably connected to the top of the main turntable 41. A positioning plate 43 is installed on the top of each of the four auxiliary turntables 42. Four sliding grooves 44 are opened inside the positioning plate 43. A slider 45 is slidably connected inside the sliding grooves 44. A positioning plate 47 is rotatably connected to the top of the slider 45 through a torsion spring. A side plate 48 is rotatably connected to the inside of the positioning plate 47 through a torsion spring. A positioning bolt 46 is threadedly connected to the bottom of the slider 45 and to one side of the positioning plate 47. A storage tank 49 is placed on the upper surface of the positioning plate 43. A top cover 410 is provided on the top of the storage tank 49.

[0072] The four planetary gears 311 are equidistantly distributed in a ring around the axis of the main gear 310, and the axis of each of the four planetary gears 311 is connected to the axis of each of the four auxiliary turntables 42 via a keyway.

[0073] The slide groove 44 has a "T" shaped cross section, and the positioning bolt 46 passes through the inside of the slider 45 and extends to the bottom of the slide groove 44.

[0074] Please see Figure 7 and Figure 8 Before ball milling, the top cover 410 needs to be opened and the bottom of the storage tank 49 needs to be aligned with the top of the four positioning plates 47. In the initial state, the positioning plates 47 and the side plates 48 are tilted.

[0075] Please see Figure 9 The storage tank 49 is placed directly on the positioning plate 43. During the placement process, the bottom of the storage tank 49 abuts against the positioning plate 47 and flips. During the flipping process of the positioning plate 47, the side plate 48 is flipped simultaneously. Finally, the positioning plate 47 and the positioning plate 43 are in contact, and the positioning of the storage tank 49 is completed. At the same time, the side plate 48 positions and bears force on the outer wall of the storage tank 49. Then, the potassium-containing precipitate and grinding balls are placed into the storage tank 49. After the top cover 410 is closed, the loading is completed.

[0076] Please see Figure 10 Since the positioning plate 47 and the side plate 48 are mounted by a torsion spring, the side plate 48 will extend its rotation trajectory by a certain angle from its initial angle. Therefore, when changing storage tanks 49 of different sizes, the rotation angle of the positioning plate 47 and the side plate 48 will also increase. Thus, the larger the storage tank 49 is, the greater the rotation angle of the side plate 48, and the greater the force on the storage tank 49. In actual operation, the user can slide the slider 45 along the track of the slide groove 44 to change the initial position of the positioning plate 47 and the side plate 48. Rotating the positioning bolt 46 can force the slider 45 and the slide groove 44 to position them. Therefore, this design allows the user to easily adjust the initial position of the positioning plate 47 according to different sizes of storage tanks 49.

[0077] Foot pads can be installed on the outer wall of the positioning plate 47 to ensure that the storage tank 49 is more stable and secure when positioned.

[0078] This embodiment:

[0079] Compared to the traditional design of directly positioning storage tank 49, this design features tilted positioning plates 47 and side plates 48, which are installed using a torsion spring rotation method. When the user places the storage tank 49, the bottom of the storage tank 49 contacts the positioning plate 47, which simultaneously causes the side plates 48 to rotate. The four positioning plates 47 can support and position the storage tank 49, while the side plates 48 rotate simultaneously to apply force to the outer wall of the storage tank 49 for positioning. Positioning is achieved from the side of the storage tank 49. Therefore, this design can ensure that the storage tank 49 can be automatically centered no matter how it is placed, and can also automatically change the force applied to the side plates 48 according to the size of the storage tank 49.

[0080] It can also solve the problems of center of gravity shift of storage tank 49 and speed fluctuation of main turntable 41 and auxiliary turntable 42. It can avoid the asymmetrical centrifugal force generated during rotation and avoid overall equipment vibration. By achieving rotational balance and uniform force, it can reduce vibration loss, friction loss, ineffective grinding energy consumption, and reduce the additional energy consumption of equipment maintenance and dynamic adjustment. It can significantly improve energy utilization efficiency and achieve mechanical energy saving. The actual output power of motor 32 is closer to the effective grinding power.

[0081] Second embodiment:

[0082] Please see Figure 7 , Figures 11 to 13 It also includes auxiliary component 5;

[0083] The auxiliary component 5 includes a fixing plate 51 fixed to both sides of the positioning disk 43. The fixing plate 51 has a slot 52 inside, and a reinforcing plate 53 is slidably installed inside the slot 52. A screw 54 is threadedly connected to the axis of the reinforcing plate 53. A top plate 55 is placed on the upper surface of the top cover 410. A sleeve 56 is installed at the axis of the top plate 55. A sliding rod 57 is slidably connected inside the sleeve 56. A pressure plate 58 is fixed at the top of the sliding rod 57. A conical column 510 is fixed inside the sleeve 56 and at the bottom of the sliding rod 57. A return spring 59 is sleeved on the outer wall of the sliding rod 57. Measuring rods 513 are slidably connected inside the sleeve 56 and on both sides of the conical column 510. Guide wheels 511 are installed at opposite ends of the two measuring rods 513. Limiting springs 512 are sleeved on the outer walls of both measuring rods 513. A scale bar 514 is opened inside both measuring rods 513.

[0084] The two sides of the cone column 510 are in contact with the outer walls of the two guide wheels 511, and the two ends of the limiting spring 512 are fixedly connected to the sleeve 56 and the guide wheels 511.

[0085] Please see Figure 7 After the storage tank 49 is installed, the user can place the auxiliary component 5 on the top cover 410, insert the reinforcing plate 53 into the slot 52, and rotate the screw 54 downward on the reinforcing plate 53 to control the auxiliary component 5 to exert force on the top cover 410 and the storage tank 49.

[0086] Please see Figure 11 In the initial state, the return spring 59 is in the initial extended state, and the two measuring rods 513 inside the sleeve 56 are retracted inside the sleeve 56.

[0087] Please see Figure 12 During the user's rotation of the descending screw 54, the screw 54 descends, controlling the pressure plate 58 to control the slide rod 57, which drives the cone 510 to slide inside the sleeve 56. The entire sleeve 56 controls the top plate 55 to bear the force on the top cover 410 and the storage tank 49. As the cone 510 descends, the inclined surface of the cone 510 controls the guide wheel 511 to drive the measuring rod 513 to extend from the inside of the sleeve 56 to the outside along the inclined surface of the cone 510. During the extension process, the user needs to observe the value of the scale bar 514 to ensure that the extended values ​​of the scale bars 514 in the four auxiliary components 5 are consistent, thus completing the force positioning of the top cover 410 and the storage tank 49.

[0088] This embodiment:

[0089] During the operation of the first embodiment, the user controls the top cover 410 and the storage tank 49 by pressing down the auxiliary component 5. During the pressing process, the user can control the cone column 510 to drive the guide wheel 511 to control the measuring rod 513 to extend to the outside of the sleeve 56. The user can observe the scale value of the scale bar 514 on the extended measuring rod 513.

[0090] Since there are four storage tanks 49, there are four auxiliary components 5. When the actual rotation is subjected to force, the outward extension range of the measuring rods 513 in the four auxiliary components 5 can be made consistent. In this way, the closing force of the top cover 410 and the storage tank 49 is the same. Therefore, it can be ensured that the rotation force of the four storage tanks 49 is consistent during the high-speed rotation grinding process, which can further improve the grinding effect and rotation balance, further improve the energy saving effect, and avoid rotation polarization.

[0091] Third embodiment:

[0092] Please see Figure 14 It also includes a wall scraping mechanism 6;

[0093] The mounting bracket 2 is bolted to the upper surface of the base plate 1 and located outside the drive mechanism 3. The wall scraping mechanism 6 includes an electric cylinder 61 mounted on the upper surface of the mounting bracket 2. An electric turntable 62 is mounted on the bottom output end of the electric cylinder 61. A rotatable scraper 63 is mounted on the bottom end of the electric turntable 62.

[0094] The length of the scraper 63 is the same as the inner diameter of the storage tank 49, and the scraper 63 and the storage tank 49 are in the same vertical direction.

[0095] Please see Figure 14 After the potassium-containing precipitate has been ground or during the grinding process, the user can open the top cover 410 and the storage tank 49, and then start the electric cylinder 61 to push the electric turntable 62 and scraper 63 downward, lowering the scraper 63 into the storage tank 49. Start the electric turntable 62 to control the scraper 63 to rotate inside the storage tank 49. When the scraper 63 is used, it can separate the potassium-containing precipitate adhering to the inner wall of the storage tank 49 from the inner wall.

[0096] This embodiment:

[0097] During the grinding process, potassium-containing precipitates are easily adhered to the inner wall of the storage tank 49 due to their own physical properties or the small amount of heat generated during grinding. When the scraping mechanism 6 rotates, it can scrape the material off the inner wall in real time, so that it returns to the action area of ​​the grinding balls, ensuring that all materials are continuously ground and directly shortening the time to reach the target particle size.

[0098] If material accumulates and sticks to the walls in a localized area of ​​the tank, under-grinding may occur, meaning that some material particles do not meet the required size. Meanwhile, material in the center of the tank may be over-grinded due to continuous stress, producing unnecessary fine powder. The wall scraping mechanism 6 can evenly disperse the material sticking to the walls back into the tank, ensuring that all materials are subjected to consistent stress during the grinding process. This results in a grinding product with a narrower and more uniform particle size distribution. At the same time, the grinding process cleans the inner wall, significantly reducing the amount of residual material. This reduces material loss and subsequent manual cleaning workload, making it particularly suitable for batch continuous production scenarios.

[0099] The present invention also provides a process for separating lithium precipitation mother liquor.

[0100] The process for separating rubidium and cesium potassium from lithium precipitation mother liquor includes the following steps:

[0101] S1: Extraction stage;

[0102] First, the lithium precipitation mother liquor is subjected to multi-stage countercurrent extraction to obtain extract and Cs extraction residue. Then, the Cs extraction residue is subjected to multi-stage countercurrent extraction to obtain extract and Rb extraction residue.

[0103] The extraction stage uses a t-BAMBP plus liquid paraffin system, first performing three-stage countercurrent extraction of cesium, and then performing three-stage countercurrent extraction of rubidium;

[0104] The cesium extraction process conditions were as follows: alkalinity c(OH-) = 0.2 mol / L, t-BAMBP volume fraction of 15%, extraction time of 2-3 min, relative VO / VA of 0.2, constant temperature water bath temperature of 25°C, and oscillation speed of shaker of 180 r / min.

[0105] The process conditions for rubidium extraction were as follows: alkalinity c(OH-) = 0.2 mol / L, t-BAMBP volume fraction of 35%, extraction time of 2-3 min, relative VO / VA of 1.0, temperature of 25°C, and shaking speed of 200 r / min.

[0106] S2: Washing stage;

[0107] The above extract was washed in multiple countercurrent stages with washing liquid. After the system stabilized, the organic phase and washing residue were obtained. The washing residue was returned to the upstream circulation for collection.

[0108] The washing stage uses NaOH solution as the washing solution, and the washing is carried out at pH=10 and a washing temperature of 25°C. The washing ion order of the cesium extraction stage is K+>Rb+>Cs+, and the process conditions are: washing time 5 min, relative VO / VA ratio of 3, and oscillation speed of 180 r / min. To avoid significant Cs loss, the number of washes should be less than 2. The rubidium extraction stage uses a three-stage countercurrent washing process, with the washing ion order being Li+>Na+>K+>Rb+. The process conditions are: washing time 10 min, relative VO / VA ratio of 1, washing temperature of 25°C, and oscillation speed of 200 r / min.

[0109] S3: Back-extraction stage;

[0110] The collected organic phase is subjected to multi-stage back-extraction with back-extraction liquid to obtain a new organic phase and back-extraction residue. The organic phase is then returned to the extraction stage.

[0111] The back-extraction solution used in the back-extraction stage was a 0.5 mol / L dilute HCl solution. The back-extraction stage employed a two-stage back-extraction process for the organic phase. The back-extraction conditions for cesium were: a phase VO / VA ratio of 2, an oscillation speed of 180 r / min, a back-extraction temperature of 25°C, and a back-extraction time of 10 min. The back-extraction conditions for rubidium were: a phase VO / VA ratio of 2, an oscillation speed of 200 r / min, a back-extraction temperature of 25°C, and a back-extraction time of 10 min.

[0112] S4: CsCl and RbCl preparation stage;

[0113] The back-extraction residue containing high concentrations of Cs / Rb was concentrated, evaporated, crystallized, and dried to obtain CsCl and RbCl salts;

[0114] The process conditions for evaporation and crystallization in the preparation stage of CsCl and RbCl are: temperature 180°C, oscillation speed 300 r / min;

[0115] S5: Alum precipitation stage;

[0116] Add an alum precipitant to the Rb residue, filter to obtain a potassium-containing precipitate, and then proceed with drying, ball milling, elution and filtration to obtain wet potassium ferric alum and elution residue. The elution residue is returned to the alum precipitation stage, and the wet potassium ferric alum is dried to obtain potassium ferric alum (KFe3(SO4)2(OH)6).

[0117] The precipitating agent used in the precipitation stage is Fe2(SO4)3. The process conditions for the precipitation reaction are: initial pH = 2-3, reaction temperature = 95°C, stirring intensity = 300 r / min, and reaction time = 2 h.

[0118] The elution method for the alum precipitation stage is as follows: place the ball milled material in a beaker, pour in half the volume of deionized water used in the alum precipitation reaction, and elute in a constant temperature water bath for 5 minutes.

[0119] This embodiment:

[0120] A t-BAMBP plus liquid paraffin system was used. After three-stage extraction in the Cs extraction stage, the raffinate was used as the mother liquor for the Rb extraction stage, as this liquid contained almost no Cs+. After three-stage extraction in the Rb extraction stage, the raffinate was used as the mother liquor for the K stage, as this liquid contained almost no Rb+. Subsequently, K was separated using an alum precipitant. Finally, K, Rb, and Cs were recovered as KFe3(SO4)2(OH)6, RbCl, and CsCl, respectively.

[0121] Please refer to the reference again. Figures 1 to 15 The working principles of the energy-saving motor unit, potassium-containing precipitate ball milling equipment, and lithium precipitation mother liquor separation process provided by this invention are as follows:

[0122] Step S1: Before ball milling, the top cover 410 needs to be opened, and the bottom of the storage tank 49 needs to be aligned with the top of the four positioning plates 47. In the initial state, the positioning plates 47 and the side plates 48 are tilted. Place the storage tank 49 directly on the positioning plate 43. During the placement process, the bottom of the storage tank 49 touches the positioning plate 47 and flips. During the flipping process of the positioning plate 47, the side plates 48 are flipped simultaneously. Finally, the positioning plate 47 and the positioning plate 43 are in contact, and the positioning of the storage tank 49 is completed. At the same time, the side plates 48 provide positioning force to the outer wall of the storage tank 49. Then, place the potassium-containing precipitate and grinding balls into the storage tank 49, and close the top cover 410 to complete the loading.

[0123] Step S2: Place the auxiliary component 5 on the top cover 410, insert the reinforcing plate 53 into the slot 52, and rotate the screw 54 downward on the reinforcing plate 53 to control the auxiliary component 5 to exert force on the top cover 410 and the storage tank 49. During the rotation of the descending screw 54, the screw 54 will descend to control the pressure plate 58 to control the slide rod 57 to drive the cone column 510 to slide inside the sleeve 56. The entire sleeve 56 controls the top plate 55 to exert force on the top cover 410 and the storage tank 49, thus completing the force positioning of the top cover 410 and the storage tank 49.

[0124] Step S3: During ball milling, the motor 32 needs to be started to control the drive gear 33 to mesh with the driven gear 34, which drives the drive pulley 35 to rotate within the mounting base 31. When the drive pulley 35 rotates, the transmission belt 37 drives the driven pulley 36 to control the main gear 310 to rotate within the round base 38. When the main gear 310 rotates, the four planetary gears 311 mesh with the gear ring 39 and revolve around it. In addition, during the revolution of the planetary gears 311, they will also rotate on their own axis. During the revolution and rotation of the four planetary gears 311, they will synchronously drive the main turntable 41 to revolve, and the planetary gears 311 will drive the four auxiliary turntables 42 to rotate on their own axis, thereby controlling the revolution and rotation of the four positioning components 4, thereby controlling the storage tank 49 to rotate and ball mill the potassium-containing precipitate and grinding balls inside.

[0125] 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 motor set, characterized in that, Includes the base plate and drive mechanism; The drive mechanism includes a mounting base mounted on the upper surface of the base plate. A motor is mounted on the upper surface of the mounting base by bolts. A drive gear is connected to the keyway of the motor output shaft. A drive pulley and a driven pulley are rotatably connected inside the mounting base. A belt is sleeved on the outer wall of the drive pulley and the driven pulley. A driven gear is connected to the keyway at the top of the mounting base and at the center of the drive pulley shaft. The motor is electrically connected to a speed sensor via a wire, the speed sensor is electrically connected to a bidirectional converter via a wire, and the bidirectional converter is electrically connected to an energy storage module via a wire. The driving gear and the driven gear mesh with each other, and the main gear and the four planetary gears mesh with each other.

2. A ball milling device for potassium-containing precipitates, characterized in that, The potassium-containing precipitate ball milling equipment includes the energy-saving motor unit as described in claim 1, and also includes a positioning component; A circular seat is fixed on the top of the mounting base and on the side of the motor. A toothed ring is fixed on the inner wall of the circular seat. Four planetary gears are meshed on the inner wall of the toothed ring. A main gear is connected to the keyway inside the circular seat and at the center of the driven gear shaft. The positioning assembly includes a main turntable rotatably connected to the inner wall of the circular base and located above the gear ring. Four auxiliary turntables are rotatably connected to the top of the main turntable. A positioning plate is installed on the top of each of the four auxiliary turntables. Four sliding grooves are opened inside the positioning plate. A slider is slidably connected inside the sliding groove. A positioning plate is rotatably connected to the top of the slider through a torsion spring. A side plate is rotatably connected to the inside of the positioning plate through a torsion spring. A positioning bolt is threadedly connected to the bottom of the slider and to one side of the positioning plate. A storage container is placed on the upper surface of the positioning plate. A top cover is provided on the top of the storage container.

3. The ball milling equipment for potassium-containing precipitates according to claim 2, characterized in that, The four planetary gears are equidistantly arranged in a ring about the axis of the main gear, and the axes of the four planetary gears are connected by keyways to the axes of the four auxiliary turntables.

4. The ball milling equipment for potassium-containing precipitates according to claim 2, characterized in that, The slide groove has a "T" shaped cross-section, and the positioning bolt passes through the inside of the slider and extends to the bottom of the slide groove.

5. The ball milling equipment for potassium-containing precipitates according to claim 2, characterized in that, It also includes auxiliary components; The auxiliary component includes a fixing plate fixed to both sides of the positioning plate. The fixing plate has a slot inside, and a reinforcing plate is slidably installed inside the slot. A screw is threaded to the center of the reinforcing plate. A top plate is placed on the upper surface of the top cover. A sleeve is installed at the center of the top plate. A sliding rod is slidably connected inside the sleeve. A pressure plate is fixed to the top of the sliding rod. A conical column is fixed inside the sleeve and at the bottom of the sliding rod. A return spring is sleeved on the outer wall of the sliding rod. Measuring rods are slidably connected inside the sleeve and on both sides of the conical column. Guide wheels are installed at opposite ends of the two measuring rods. Limiting springs are sleeved on the outer walls of both measuring rods. Scale strips are opened inside both measuring rods.

6. The ball milling equipment for potassium-containing precipitates according to claim 5, characterized in that, The two sides of the cone column are in contact with the outer walls of the two guide wheels, and the two ends of the limiting spring are fixedly connected to the sleeve and the guide wheels.

7. The ball milling equipment for potassium-containing precipitates according to claim 2, characterized in that, It also includes a wall scraping mechanism; A mounting bracket is bolted to the upper surface of the base plate and located outside the drive mechanism. The wall scraping mechanism includes an electric cylinder mounted on the upper surface of the mounting bracket. An electric turntable is mounted at the bottom output end of the electric cylinder, and a rotatable scraper is mounted at the bottom end of the electric turntable.

8. The ball milling equipment for potassium-containing precipitates according to claim 7, characterized in that, The length of the scraper is the same as the inner diameter of the storage tank, and the scraper and the storage tank are in the same vertical direction.

9. A process for separating lithium precipitation mother liquor, characterized in that, The lithium precipitation mother liquor separation process includes the energy-saving motor unit and potassium-containing precipitate ball milling equipment as described in any one of claims 1-8, and includes the following steps: S1: Extraction stage; First, the lithium precipitation mother liquor is subjected to multi-stage countercurrent extraction to obtain extract and Cs extraction residue. Then, the Cs extraction residue is subjected to multi-stage countercurrent extraction to obtain extract and Rb extraction residue. S2: Washing stage; The above extract was washed in multiple countercurrent stages with washing liquid. After the system stabilized, the organic phase and washing residue were obtained. The washing residue was returned to the upstream circulation for collection. S3: Back-extraction stage; The collected organic phase is subjected to multi-stage back-extraction with back-extraction liquid to obtain a new organic phase and back-extraction residue. The organic phase is then returned to the extraction stage. S4: CsCl and RbCl preparation stage; The back-extraction residue containing high concentrations of Cs / Rb was concentrated, evaporated, crystallized, and dried to obtain CsCl and RbCl salts; S5: Alum precipitation stage; Add an alum precipitant to the Rb residue, filter to obtain a potassium-containing precipitate, and then proceed with drying, ball milling, elution and filtration to obtain wet potassium ferric alum and elution residue. The elution residue is returned to the alum precipitation stage. The wet potassium ferric alum is dried to obtain potassium ferric alum (KFe3(SO4)2(OH)6). The ball milling stage needs to be carried out in a storage tank.

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