Method for extracting lithium from lithium-containing cryolite

Abstract

The invention is applicable to the field of extraction metallurgy, and provides a method for extracting lithium from lithium-containing cryolite, which specifically comprises the following steps: firstly, crushing and grinding the lithium-containing cryolite, treating the crushed cryolite into particles, then drying the crushed cryolite, and reducing the water content of the cryolite to be below%, thereby obtaining the lithium-containing cryolite. The crushed cryolite is leached by using an acidic medium, and the extracted lithium compound is further purified and dried; and crushing and grinding equipment is also adopted for crushing and grinding the lithium-containing cryolite. The device has the advantages that the crushing and grinding efficiency is high, blockage is effectively relieved, time is saved, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the field of extractive metallurgy, and in particular to a method for extracting lithium from lithium-containing cryolite. Background Art

[0002] With the rapid development of clean energy and electric vehicles around the world, the demand for lithium as a key raw material has increased dramatically. Traditional lithium resources mainly come from hard rock minerals, but these resources have problems such as high cost, difficulty in mining, and scarcity. Cryolite, as a lithium-containing mineral, is widely distributed and has abundant reserves. Extracting lithium from lithium-containing cryolite can help ease the tight supply of lithium resources and meet the growing market demand.

[0003] The current method of extracting lithium from lithium-containing cryolite can achieve lithium recovery during the lithium extraction process, but the lithium extraction efficiency is low, and the energy consumption is high and it takes a longer time, thereby increasing the cost. In the crushing and grinding stages, crushing equipment and grinding equipment are mostly used to separately process to achieve the required particle size requirements. Although the process is simple, in order to achieve a certain particle size, it may require greater energy consumption and longer grinding time, and it is easy to get clogged during the grinding process.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a method for extracting lithium from lithium-containing cryolite to overcome the shortcomings in current practical applications. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a method for extracting lithium from lithium-containing cryolite, aiming to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A method for extracting lithium from lithium-containing cryolite, specifically comprising the following steps:

[0008] S1: crushing and grinding the lithium-containing cryolite to form particles;

[0009] S2: drying the crushed cryolite to reduce its water content to below 5%;

[0010] S3: Leaching the crushed cryolite using an acidic medium;

[0011] S4: further purifying and drying the extracted lithium compound.

[0012] A further technical solution is that in the step S1, a crushing and grinding device is used to crush and grind the lithium-containing cryolite, and the crushing and grinding device includes a base frame, a lower shell and an upper shell, the upper end of the base frame is fixedly connected to the lower shell, the inner bottom end of the lower shell is provided with a discharge port, the inner wall of the lower shell is rotatably connected to an outer grinding cylinder, the upper end of the lower shell is fixedly connected to the upper shell, a feed hopper is provided at the top of the upper shell, a receiving block is fixedly connected to the inner wall of the top of the upper shell, the receiving block is rollingly connected to a connecting rod, and the lower end of the connecting rod is fixedly connected to a crushing bell; the inner wall of the lower shell is fixedly connected to a receiving ring through a plurality of evenly distributed connecting plates, the inner wall of the receiving ring is rotatably connected to a turntable, the middle part of the turntable is cooperatively connected to a fixed rod, and the lower end of the fixed rod is fixedly connected to the inner bottom end of the lower shell, and a The swivel joint has a plurality of camshafts, each of which is connected to a plurality of linking members, each of which is connected to a plurality of linking members, each of which is connected to a plurality of linking members. The swivel joint has a plurality of camshafts, each of which is connected to a plurality of linking members. The swivel joint has a plurality of camshafts, each of which is connected to a plurality of linking members. The camshafts have a plurality of camshafts, each of which is connected to a plurality of linking members. The camshafts have a plurality of camshafts, each of which is connected to a plurality of linking members. The camshafts have a plurality of camshafts, each of which is connected to a plurality of linking members.

[0013] A further technical solution is that a motor is fixedly arranged at the lower end of the receiving ring, and the motor is meshedly connected to the lower gear ring; a plurality of crushing gear rings are fixedly arranged on the outer wall of the crushing bell; and grinding beads are fixedly connected to the outer wall of the inner grinding cylinder, the inner wall of the outer grinding cylinder and the outer end of the slide plate.

[0014] A further technical solution is that the rotating and moving component includes a fixed sleeve, a curved groove, a first T-slot, a rack, a first slider, a first fixed shaft, a first gear, a push-pull plate and a second fixed shaft; a fixed sleeve is fixedly sleeved on the outer wall of the fixed rod, and a curved groove is provided on the fixed sleeve; two symmetrically distributed first T-slots are provided on the turntable, and a through groove is provided between the two first T-slots, one of the first T-slots is fixedly connected to a rack on the inner wall, and the other first T-slot is slidably connected to the first slider on the inner wall, the first slider is fixedly connected to a push-pull plate, the push-pull plate is fixedly connected to the second fixed shaft, and the second fixed shaft abuts the inner wall of the curved groove; the first slider is rotatably connected to the first fixed shaft, the upper end of the first fixed shaft is fixedly connected to a universal joint structure, the outer wall of the first fixed shaft is also fixedly sleeved with a first gear, and the first gear is meshingly connected to the rack.

[0015] A further technical solution is that the connecting assembly includes a connecting ring plate, a third fixed shaft, a second return plate and a first support plate; a plurality of evenly distributed second return plates are fixedly connected to the inner wall of the crushing bell, the other end of the second return plate is fixedly connected to a connecting ring plate, the connecting ring plate is cooperatively connected with a third fixed shaft, a plurality of first support plates are fixedly connected to the upper end of the third fixed shaft, and the first support plates correspond one-to-one with the second return plates, the first support plate abuts against the inner wall of the second return plate, and the lower end of the third fixed shaft is fixedly connected to the upper end of the universal joint structure.

[0016] A further technical solution is that the linkage assembly includes a linkage shaft, a connecting gear and an upper gear ring; the upper end of the outer grinding cylinder is fixedly connected to the upper gear ring; a linkage shaft is rotatably connected to one of the connecting plates, and both ends of the linkage shaft are fixedly sleeved with connecting gears, and the two connecting gears are respectively meshed and connected to the lower gear ring and the upper gear ring.

[0017] A further technical solution is that the telescopic assembly includes a lifting ring, a sleeve, a rotating plate and a driving plate; the lifting ring is fixedly sleeved on the outer wall of the fixed rod, and the sleeve is also rotatably sleeved on the outer wall of the fixed rod, and the sleeve is located above the lifting ring, and the lower end of the sleeve is fixedly connected to two symmetrically distributed driving plates, and the lower end of the driving plate abuts the curved surface on the lifting ring, and the outer wall of the sleeve is hinged with a plurality of evenly distributed rotating plates, two of the rotating plates form a group, and the other ends of the two rotating plates in each group are hinged to the same slide plate.

[0018] The present invention drives the connecting component to rotate and adjust the tilt posture in real time by cooperating with the rotating moving component and the universal joint structure, drives the crushing bell to move through the connecting component, drives the outer grinding cylinder to rotate by cooperating with the linkage component and the lower gear ring, pushes the slide plate to reciprocate on the inner wall of the slide groove by cooperating with the telescopic component and the fixed rod, crushes the lithium-containing cryolite by the crushing bell and the crushing gear ring, and stirs the crushed lithium-containing cryolite by cooperating with the slide plate, grinding beads and the telescopic component, thereby promoting friction and collision between materials, breaking the static balance of materials inside the equipment, allowing materials to flow in a wider area, reducing the risk of local accumulation and blockage, and having the effects of high crushing and grinding efficiency, effectively alleviating blockage, saving time, and thus reducing costs.

[0019] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged three-dimensional structure at center A;

[0023] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged three-dimensional structure at B in the middle

[0024] Figure 5 For the present invention Figure 2 Schematic diagram of the enlarged three-dimensional structure at C in the middle

[0025] Figure 6 It is a schematic diagram of a partial three-dimensional structure inside the lower housing of the present invention;

[0026] Figure 7 For the present invention Figure 2 A schematic diagram of a cross-sectional three-dimensional structure;

[0027] Figure 8 For the present invention Figure 7 The enlarged three-dimensional structure diagram at D in the middle;

[0028] Fig. 9 It is an enlarged three-dimensional structural schematic diagram of the fixed sleeve plate in the present invention.

[0029] In the figure: 1, chassis; 2, lower shell; 3, upper shell; 4, feed hopper; 5, receiving block; 6, connecting rod; 7, crushing bell; 8, crushing gear ring; 9, connecting plate; 10, receiving ring; 11, turntable; 12, fixed rod; 13, rotating moving assembly; 131, fixed sleeve plate; 132, curved groove; 133, first T-slot; 134, rack; 135, first slider; 136, first fixed shaft; 137, first gear; 138, push-pull plate; 139, second fixed shaft; 14, Wan Joint structure; 15, connecting assembly; 151, connecting ring plate; 152, third fixed shaft; 153, second return plate; 154, first support plate; 16, outer grinding cylinder; 17, linkage assembly; 171, linkage shaft; 172, connecting gear; 173, upper gear ring; 18, telescopic assembly; 181, lifting ring; 182, sleeve; 183, rotating plate; 184, driving plate; 19, discharge port; 20, inner grinding cylinder; 21, lower gear ring; 22, motor; 23, slide groove; 24, slide plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0032] like Figure 1-9 As shown, an embodiment of the present invention provides a method for extracting lithium from lithium-containing cryolite, which specifically includes the following steps:

[0033] S1: crushing and grinding the lithium-containing cryolite to form fine powder or granules;

[0034] S2: drying the crushed cryolite to reduce its water content to below 5% to reduce the interference of water in subsequent reactions and improve the extraction rate of lithium;

[0035] S3: using an acidic medium such as sulfuric acid or hydrochloric acid to leach the crushed cryolite, so that the lithium element is transferred from the solid phase to the liquid phase;

[0036] First, the dried cryolite powder is mixed with an appropriate amount of acidic solution, and reacted at an appropriate temperature (such as room temperature to 80°C) and stirring conditions. After a period of reaction, the solid and liquid are separated by filtering or the like to obtain a lithium-containing filtrate. Finally, the filtrate is further treated, such as adding an alkaline substance (such as lithium hydroxide) to precipitate the lithium element, or using other methods (such as solvent extraction, ion exchange, etc.) for purification.

[0037] S4: The extracted lithium compound is further purified and dried to remove impurities and improve purity.

[0038] The present invention provides an apparatus for crushing and grinding lithium-containing cryolite in the above-mentioned step S1, comprising a base frame 1, a lower shell 2 and an upper shell 3, wherein the upper end of the base frame 1 is fixedly connected to the lower shell 2, a discharge port 19 is provided at the inner bottom end of the lower shell 2, an outer grinding cylinder 16 is rotatably connected to the inner wall of the lower shell 2, the upper end of the lower shell 2 is fixedly connected to the upper shell 3, a feed hopper 4 is arranged at the top of the upper shell 3, a receiving block 5 is fixedly connected to the inner wall of the top end of the upper shell 3, the receiving block 5 is rollingly connected to a connecting rod 6, and a crushing bell 7 is fixedly connected to the lower end of the connecting rod 6; the inner wall of the lower shell 2 is fixedly connected to a receiving ring 10 through a plurality of evenly distributed connecting plates 9, the inner wall of the receiving ring 10 is rotatably connected to a rotating disk 11, a fixed rod 12 is cooperatively connected to the middle part of the rotating disk 11, and the lower end of the fixed rod 12 is fixedly connected to the inner bottom end of the lower shell 2, a rotating moving component 13 is cooperatively arranged between the rotating disk 11 and the fixed rod 12, and the upper end of the rotating moving component 13 is fixedly connected to a universal joint. Structure 14, the other end of the universal joint structure 14 is fixedly connected with a connecting component 15, and the upper end of the connecting component 15 is fixedly connected to the inner wall of the crushing bell 7, the rotating and moving component 13 drives the connecting component 15 to rotate and adjust the tilt posture in real time by cooperating with the universal joint structure 14, the connecting component 15 is used to drive the crushing bell 7 to move, the lower end of the turntable 11 is fixedly connected with a lower gear ring 21, and a linkage component 17 is provided between the lower gear ring 21 and the outer grinding cylinder 16, and the linkage component 17 drives the outer grinding cylinder 16 to rotate by cooperating with the lower gear ring 21; the lower end of the turntable 11 is also fixedly connected with an inner grinding cylinder 20, and a plurality of slide grooves 23 are provided on the inner walls of the slide grooves 23, and slide plates 24 are slidably connected to the inner walls of the slide grooves 23, and the outer wall of the fixed rod 12 is sleeved with a telescopic component 18, and the other end of the telescopic component 18 is hinged to the slide plate 24, and the telescopic component 18 pushes the slide plate 24 to reciprocate on the inner wall of the slide groove 23 by cooperating with the fixed rod 12.

[0039] Furthermore, a motor 22 is fixedly provided at the lower end of the receiving ring 10, and the motor 22 is meshedly connected to the lower gear ring 21; a plurality of crushing gear rings 8 are fixedly provided on the outer wall of the crushing bell 7, and the crushing bell 7 and the crushing gear rings 8 are both used for crushing lithium-containing cryolite; the outer wall of the inner grinding cylinder 20, the inner wall of the outer grinding cylinder 16 and the outer end of the slide plate 24 are fixedly connected with grinding beads (not shown in the figure), and the slide plate 24, grinding beads and telescopic assembly 18 cooperate to stir the crushed lithium-containing cryolite, promote friction and collision between materials, break the static balance of materials inside the equipment, make materials flow in a wider area, and reduce the risk of local accumulation and blockage.

[0040] It is understandable that the universal joint structure 14 is a feature of the prior art and will not be described in detail herein.

[0041] In an embodiment of the present invention, the connecting component 15 is driven to rotate and the tilt posture is adjusted in real time by cooperating with the rotating moving component 13 and the universal joint structure 14, the crushing bell 7 is driven to move by the connecting component 15, the outer grinding cylinder 16 is driven to rotate by cooperating with the linkage component 17 and the lower gear ring 21, the slide plate 24 is pushed to reciprocate on the inner wall of the slide groove 23 by cooperating with the telescopic component 18 and the fixed rod 12, the lithium-containing cryolite is crushed by the crushing bell 7 and the crushing gear ring 8, and the crushed lithium-containing cryolite is stirred by cooperating with the slide plate 24, the grinding beads and the telescopic component 18, so as to promote friction and collision between materials, break the static balance of materials inside the equipment, make materials flow in a wider area, reduce the risk of local accumulation and blockage, and have the effects of high crushing and grinding efficiency, effectively alleviate blockage, save time, and thus reduce costs.

[0042] like Figure 2 , Figure 4 , Figure 7-9 As shown, the rotating moving assembly 13 includes a fixed sleeve 131, a curved groove 132, a first T-slot 133, a rack 134, a first slider 135, a first fixed shaft 136, a first gear 137, a push-pull plate 138 and a second fixed shaft 139; the outer wall of the fixed rod 12 is fixedly sleeved with a fixed sleeve 131, and the fixed sleeve 131 is provided with a curved groove 132; the turntable 11 is provided with two symmetrically distributed first T-slots 133, and a through groove (not marked in the figure) is provided between the two first T-slots 133, and the inner wall of the upper first T-slot 133 is fixedly connected There is a rack 134, and the inner wall of the first T-slot 133 below is slidably connected with a first slider 135, and a push-pull plate 138 is fixedly connected to the first slider 135, and a second fixed shaft 139 is fixedly connected to the push-pull plate 138, and the second fixed shaft 139 abuts against the inner wall of the curved groove 132; the first slider 135 is rotatably connected with a first fixed shaft 136, and the upper end of the first fixed shaft 136 is fixedly connected to the universal joint structure 14, and the outer wall of the first fixed shaft 136 is also fixedly sleeved with a first gear 137, and the first gear 137 is meshingly connected to the rack 134.

[0043] In specific applications, the motor 22 drives the lower gear ring 21 to rotate, and then the lower gear ring 21 drives the turntable 11 to rotate around the fixed rod 12. At this time, the second fixed shaft 139 slides along the inner wall of the curved groove 132, and then the second fixed shaft 139 drives the first slider 135 to slide along the inner wall of the first T-slot 133 at the bottom of the turntable 11 through the push-pull plate 138, and then the first slider 135 drives the first fixed shaft 136 to move, and the first gear 137 rotates synchronously under the meshing action of the rack 134, and the first gear 137 drives the first fixed shaft 136 to rotate, and then the first fixed shaft 136 drives the universal joint structure 14 to move.

[0044] like Figure 2 and Figure 4 As shown, the connecting assembly 15 includes a connecting ring plate 151, a third fixed shaft 152, a second return plate 153 and a first support plate 154; a plurality of evenly distributed second return plates 153 are fixedly connected to the inner wall of the crushing bell 7, the other end of the second return plate 153 is fixedly connected to the connecting ring plate 151, the connecting ring plate 151 is cooperatively connected with the third fixed shaft 152, a plurality of first support plates 154 are fixedly connected to the upper end of the third fixed shaft 152, and the first support plates 154 correspond to the second return plates 153 one by one, the first support plates 154 abut against the inner wall of the second return plate 153, and the lower end of the third fixed shaft 152 is fixedly connected to the upper end of the universal joint structure 14.

[0045] In specific application, the universal joint structure 14 drives the third fixed shaft 152 to move, and then the third fixed shaft 152 drives the second return plate 153 to rotate around the axis of the upper shell 3 through the first support plate 154. In this process, the third fixed shaft 152 drives the crushing bell 7 to continuously adjust the rotation radius through the connecting ring plate 151 and the second return plate 153.

[0046] like Figure 2 and Figure 3 As shown, the linkage assembly 17 includes a linkage shaft 171, a connecting gear 172 and an upper gear ring 173; the upper end of the outer grinding cylinder 16 is fixedly connected to the upper gear ring 173; one of the connecting plates 9 is rotatably connected to the linkage shaft 171, and both ends of the linkage shaft 171 are fixedly sleeved with connecting gears 172, and the two connecting gears 172 are respectively meshed and connected to the lower gear ring 21 and the upper gear ring 173.

[0047] In specific application, the lower gear ring 21 drives the connecting gear 172 to rotate, and then the connecting gear 172 drives another connecting gear 172 to rotate through the linkage shaft 171, and then the connecting gear 172 drives the upper gear ring 173 to rotate, and then the upper gear ring 173 drives the outer grinding cylinder 16 to rotate in the opposite direction of the turntable 11.

[0048] like Figure 2 , Figure 5 As shown in the connecting rod 6, the telescopic assembly 18 includes a lifting ring 181, a sleeve 182, a rotating plate 183 and a driving plate 184; the outer wall of the fixed rod 12 is fixedly sleeved with a lifting ring 181, and the outer wall of the fixed rod 12 is also rotatably sleeved with a sleeve 182, and the sleeve 182 is located above the lifting ring 181, and the lower end of the sleeve 182 is fixedly connected to two symmetrically distributed driving plates 184, and the lower end of the driving plate 184 abuts against the curved surface on the lifting ring 181, and the outer wall of the sleeve 182 is hinged with a plurality of evenly distributed rotating plates 183, two of the rotating plates 183 form a group, and the other ends of the two rotating plates 183 in each group are hinged to the same slide plate 24.

[0049] In specific applications, the turntable 11 drives the inner grinding cylinder 20 to rotate, and then the inner grinding cylinder 20 drives the sleeve 182 to rotate around the fixed rod 12 through the slide plate 24 and the rotating plate 183, and the sleeve 182 synchronously drives the driving plate 184 to move on the curved surface at the upper end of the lifting ring 181, and the driving plate 184 performs a lifting movement, and the driving plate 184 drives the sleeve 182 to lift and lower, and then the sleeve 182 drives the slide plate 24 to slide back and forth in the slide groove 23 through the rotating plate 183.

[0050] The working principle of the present invention is: start the motor 22, add lithium-containing cryolite from the feed hopper 4, the motor 22 drives the lower gear ring 21 to rotate, and then the lower gear ring 21 drives the turntable 11 to rotate around the fixed rod 12, at this time, the second fixed shaft 139 slides along the inner wall of the curved groove 132, and then the second fixed shaft 139 drives the first slider 135 to slide along the inner wall of the first T-slot 133 at the lower part of the turntable 11 through the push-pull plate 138, and then the first slider 135 drives the first fixed shaft 136 to move, and the first gear 137 rotates synchronously under the meshing action of the rack 134, the first gear 137 drives the first fixed shaft 136 to rotate, and then the first fixed shaft 136 drives the universal joint structure 14 to move, and then the universal joint structure 14 drives the third fixed shaft 152 to move, and then the third fixed shaft 152 passes The first support plate 154 drives the second return plate 153 to rotate around the axis of the upper shell 3. During this process, the third fixed shaft 152 drives the crushing bell 7 to continuously adjust the rotation radius through the connecting ring plate 151 and the second return plate 153. The crushing bell 7 and the crushing gear ring 8 collide and squeeze the lithium-containing cryolite to break it, and then the lower gear ring 21 drives the connecting gear 172 to rotate, and then the connecting gear 172 drives another connecting gear 172 to rotate through the linkage shaft 171, and then the connecting gear 172 drives the upper gear ring 173 to rotate, and then the upper gear ring 173 drives the outer grinding cylinder 16 to move in the opposite direction of rotation to the turntable 11, and the turntable 11 synchronously drives the inner grinding cylinder 20 to rotate, and then the grinding beads between the inner grinding cylinder 20 and the outer grinding cylinder 16 are used to grind the crushed lithium-containing cryolite. In addition, the turntable 11 drives the inner grinding cylinder 20 to rotate, and then the inner grinding cylinder 20 drives the sleeve 182 to rotate around the fixed rod 12 through the slide plate 24 and the rotating plate 183, and the sleeve 182 synchronously drives the driving plate 184 to move on the curved surface at the upper end of the lifting ring 181, and the driving plate 184 performs a lifting movement, and the driving plate 184 drives the sleeve 182 to lift and lower, and then the sleeve 182 drives the slide plate 24 to slide back and forth in the slide groove 23 through the rotating plate 183, and the slide plate 24 cooperates with the grinding beads to grind and stir the crushed lithium-containing cryolite.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for extracting lithium from lithium-containing cryolite, characterized in that: The specific steps include: S1: crushing and grinding the lithium-containing cryolite to form particles; S2: drying the crushed cryolite to reduce its water content to below 5%; S3: Leaching the crushed cryolite using an acidic medium; S4: further purifying and drying the extracted lithium compound.

2. The method for extracting lithium from lithium-containing cryolite according to claim 1, characterized in that: In the step S1, a crushing and grinding device is used to crush and grind the lithium-containing cryolite. The crushing and grinding device includes a base frame, a lower shell and an upper shell. The upper end of the base frame is fixedly connected to the lower shell, and a discharge port is provided at the inner bottom end of the lower shell. The inner wall of the lower shell is rotatably connected to an outer grinding cylinder, the upper end of the lower shell is fixedly connected to the upper shell, and a feed hopper is provided at the top of the upper shell. A receiving block is fixedly connected to the inner wall of the top of the upper shell, and the receiving block is rollingly connected to a connecting rod, and a crushing bell is fixedly connected to the lower end of the connecting rod; the inner wall of the lower shell is fixedly connected to a receiving ring through a plurality of evenly distributed connecting plates, and the inner wall of the receiving ring is rotatably connected to a turntable, a fixed rod is cooperatively connected to the middle of the turntable, and the lower end of the fixed rod is fixedly connected to the inner bottom end of the lower shell, and a rotating moving group is cooperatively provided between the turntable and the fixed rod. The cam is fixedly connected to the chassis and the cam is fixedly connected to the chassis by the cam, and the cam is connected to the chassis by the cam, and the cam is connected to the chassis by the cam.

3. The method for extracting lithium from lithium-containing cryolite according to claim 2, characterized in that: A motor is fixedly arranged at the lower end of the receiving ring, and the motor is meshedly connected to the lower gear ring; a plurality of crushing gear rings are fixedly arranged on the outer wall of the crushing bell; and grinding beads are fixedly connected to the outer wall of the inner grinding cylinder, the inner wall of the outer grinding cylinder and the outer end of the slide plate.

4. The method for extracting lithium from lithium-containing cryolite according to claim 3, characterized in that: The rotating and moving assembly includes a fixed sleeve plate, a curved groove, a first T-slot, a rack, a first slider, a first fixed shaft, a first gear, a push-pull plate, and a second fixed shaft; The outer wall of the fixed rod is fixedly sleeved with a fixed sleeve plate, and the fixed sleeve plate is provided with a curved groove; the turntable is provided with two symmetrically distributed first T-slots, and a through groove is provided between the two first T-slots, one of the first T-slots is fixedly connected with a rack on the inner wall, and the other first T-slot is slidably connected with a first slider on the inner wall, the first slider is fixedly connected with a push-pull plate, the push-pull plate is fixedly connected with a second fixed shaft, and the second fixed shaft abuts against the inner wall of the curved groove; the first slider is rotatably connected with a first fixed shaft, the upper end of the first fixed shaft is fixedly connected to a universal joint structure, the outer wall of the first fixed shaft is also fixedly sleeved with a first gear, and the first gear is meshingly connected to the rack.

5. The method for extracting lithium from lithium-containing cryolite according to claim 4, characterized in that: The connecting assembly includes a connecting ring plate, a third fixed shaft, a second return plate and a first support plate; A plurality of evenly distributed second return plates are fixedly connected to the inner wall of the crushing bell, a connecting ring plate is fixedly connected to the other end of the second return plate, a third fixed shaft is cooperatively connected to the connecting ring plate, a plurality of first support plates are fixedly connected to the upper end of the third fixed shaft, and the first support plates correspond to the second return plates one by one, the first support plates abut against the inner wall of the second return plate, and the lower end of the third fixed shaft is fixedly connected to the upper end of the universal joint structure.

6. The method for extracting lithium from lithium-containing cryolite according to claim 2, characterized in that: The linkage assembly includes a linkage shaft, a connecting gear and an upper gear ring; The upper end of the outer grinding cylinder is fixedly connected with an upper gear ring; a linkage shaft is rotatably connected in one of the connecting plates, and both ends of the linkage shaft are fixedly sleeved with connecting gears, and the two connecting gears are respectively meshed and connected with the lower gear ring and the upper gear ring.

7. The method for extracting lithium from lithium-containing cryolite according to claim 6, characterized in that: The telescopic assembly includes a lifting ring, a sleeve, a rotating plate and a driving plate; the lifting ring is fixedly sleeved on the outer wall of the fixed rod, and the sleeve is also rotatably sleeved on the outer wall of the fixed rod, and the sleeve is located above the lifting ring, and the lower end of the sleeve is fixedly connected to two symmetrically distributed driving plates, and the lower end of the driving plate abuts the curved surface on the lifting ring, and the outer wall of the sleeve is hinged with a plurality of evenly distributed rotating plates, two of the rotating plates form a group, and the other ends of the two rotating plates in each group are hinged to the same slide plate.

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