Energy-saving ball milling equipment for extracting lithium from lepidolite

Abstract

The application belongs to the technical field of lithium extraction, and particularly relates to a lithium mica lithium extraction energy-saving ball mill equipment, which comprises a grinding device and a heat circulation device; the grinding device designed by the application can impact the raw materials in the coarse material grinding cylinder to crush the raw materials, and can grind the materials in the fine material grinding cylinder; compared with the traditional grinding device, the grinding device designed by the application can better utilize the space of the grinding cylinder, and the ball mill has a smaller size. The first spiral piece structure and the second spiral piece structure are provided, which can on the one hand ensure that the ground materials and the newly added materials can slowly move, so that the ground materials and the newly added materials can fully exchange heat, and on the other hand, the first spiral piece structure and the second spiral piece structure can scrape the materials on the wall surface of the inner mounting cylinder and the outer mounting cylinder during the rotation process, so as to prevent the materials from being adhered to the wall surface of the inner mounting cylinder and the outer mounting cylinder after being heated, and affect heat conduction.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of lithium extraction, and particularly relates to a lithium mica lithium extraction energy-saving ball mill device. BACKGROUND

[0002] With the development of new energy industry and lithium battery technology, the demand for lithium is increasing, and the limited salt lake brine lithium resources may face exhaustion and shortage, and the distribution of salt lake brine resources is extremely uneven. Most of the lithium resources in China are stored in ores, and lithium mica is one of the lithium-rich ores.

[0003] At present, the methods for extracting lithium metal from lithium mica as raw material include sulfuric acid method, sulfate roasting method, limestone method, chlorination roasting method, pressure cooking method, alkali dissolution method, etc. For the limestone method, the lithium mica needs to be ground first, then heated into the roasting equipment under the action of the air preheating system, and after roasting, the heat is taken away by the air cooling system for cooling. The heat taken away is used for preheating the mica entering the roasting equipment, and this process forms an air heat circulation energy-saving system. However, the system has high cost, needs a large installation space, and there is a certain loss of heat in the air circulation process.

[0004] The grinding of lithium mica generally uses a ball mill, which is divided into two zones, one is to impact large blocks into small blocks, and the other is to further grind them. The two zones can better grind the lithium mica, but make the roller of the ball mill longer and larger in size.

[0005] The lithium mica lithium extraction energy-saving ball mill device designed in the application saves the air circulation system, directly transfers the heat to the feed, has high thermal efficiency, and uses a ball mill device which is small in size. SUMMARY

[0006] In order to achieve the above purpose, the application adopts the following technical scheme:

[0007] A lithium mica lithium extraction energy-saving ball mill device, which comprises a grinding device and a heat circulation device.

[0008] The grinding device comprises a support, a first motor, a fixed cylinder, a second motor, a coarse material grinding cylinder and a fine material grinding cylinder, wherein the fixed cylinder is swingingly mounted on the support, the support is provided with the first motor capable of driving the fixed cylinder to swing, the fixed cylinder is provided with a feeding opening and a discharging opening; the inner side of the fixed cylinder is rotatably provided with the fine material grinding cylinder, the coarse material grinding cylinder is fixedly arranged in the fine material grinding cylinder through a connecting block; the end surface of the fixed cylinder is fixedly provided with the second motor, and the output shaft of the second motor is fixedly connected with the coarse material grinding cylinder; the outer circumferential surface of the coarse material grinding cylinder is provided with two coarse material filtering areas uniformly provided with coarse material filtering holes, and the other areas of the outer circumferential surface of the coarse material grinding cylinder are provided with electromagnetic block assemblies; the outer circumferential surface of the fine material grinding cylinder is provided with two fine material filtering areas uniformly provided with fine material filtering holes, and the other areas of the outer circumferential surface of the fine material grinding cylinder are provided with electromagnetic block assemblies; and the steel balls are arranged in the coarse material grinding cylinder and the fine material grinding cylinder.

[0009] The heat circulation device comprises a base, a first spiral blade structure, a third motor, a fourth motor, an inner mounting cylinder, a square shaft, a first cleaning structure, an outer mounting cylinder, a fifth motor, a second spiral blade structure, a sixth motor and a second cleaning structure, wherein the inner mounting cylinder and the outer mounting cylinder are fixedly mounted on the upper side of the base through two supporting rods; the upper end of the inner mounting cylinder is provided with a grinding material inlet, and the lower end of the inner mounting cylinder is provided with a grinding material outlet; the inner side of the inner mounting cylinder is rotatably provided with the first spiral blade structure; the lower end of the inner mounting cylinder is fixedly provided with the fourth motor capable of driving the first spiral blade structure to rotate; the outer mounting cylinder is nestedly mounted on the outer side of the inner mounting cylinder, the upper end of the outer mounting cylinder is provided with a new material outlet, and the lower end of the outer mounting cylinder is provided with a new material inlet; the inner side of the outer mounting cylinder is rotatably provided with the second spiral blade structure; and the lower end of the outer mounting cylinder is fixedly provided with the sixth motor capable of driving the second spiral blade structure to rotate.

[0010] As a preferred scheme, the swing shaft of the fixed cylinder is fixedly provided with an arc-shaped rack, and the output shaft of the first motor is connected with the rack through gear transmission; the bottom of the fixed cylinder is provided with a discharging opening, and the rear end of the fixed cylinder is fixedly provided with a feeding opening through a fixed support.

[0011] As a preferred scheme, the inner side of the inner mounting cylinder is rotatably provided with the square shaft; the square shaft is slidably provided with the first cleaning structure, the center of the first cleaning structure is provided with a square hole slidably connected with the square shaft, the square hole and the ring wall of the first cleaning structure are provided with a first spiral cleaning opening in a spiral shape, the first spiral cleaning opening is in close contact with and slidably connected with the upper and lower spiral surfaces of the first spiral blade structure; two third motors are fixedly mounted on the upper and lower ends of the inner mounting cylinder, and the output shafts of the two third motors are respectively connected with the upper and lower ends of the square shaft through gear transmission.

[0012] As a preferred scheme, the outer ring of the first spiral blade structure is provided with a spiral cleaning blade, and a plurality of connecting rods are fixedly arranged on the spiral cleaning blade in a circumferential direction.

[0013] As a preferred scheme, the lower end of the first spiral piece structure is fixedly installed with a transmission sleeve, and the lower end of the inner installation cylinder is fixedly installed with a fourth motor capable of driving the transmission sleeve to rotate.

[0014] As a preferred scheme, the outer side of the inner installation cylinder is rotatably installed with a rotating sleeve, the lower end of the rotating sleeve is provided with teeth, and two guide sliding grooves are symmetrically formed in the rotating sleeve; the second cleaning structure is slidably installed on the second spiral piece structure, two guide sliding blocks are symmetrically installed on the outer side of the second cleaning structure, and the guide sliding blocks and the guide sliding grooves are in one-to-one sliding fit; the second spiral cleaning port in a spiral shape is formed on the second cleaning structure, and the second spiral cleaning port is in close contact and sliding fit with the upper and lower spiral surfaces of the second spiral piece structure; the lower end of the outer installation cylinder is fixedly installed with a fifth motor, and a second gear is fixedly installed on the output shaft of the fifth motor, and the second gear is engaged with the rotating sleeve.

[0015] As a preferred scheme, the inner and outer rings of the second spiral piece structure are both installed with spiral cleaning pieces.

[0016] As a preferred scheme, a plurality of tooth rings uniformly distributed from top to bottom are fixedly installed on the outer side of the second spiral piece structure; the lower end of the outer installation cylinder is fixedly installed with a sixth motor; a plurality of first gears are uniformly installed on the output shaft of the sixth motor, and the first gears are one-to-one corresponding and respectively engaged with each other.

[0017] As a preferred scheme, the outer side of the outer installation cylinder is wrapped with a heat preservation layer, and the lower end of the heat preservation layer is located on the upper side of the new material inlet.

[0018] As a preferred scheme, the outer side of the heat preservation layer is installed with an annular air tank, the upper side of which is provided with an air port, and the lower side of the annular air tank is connected with the new material inlet through a connecting pipe; the airflow passage at the connection between the connecting pipe and the new material inlet is in a strip shape; the new material inlet located on the upper side of the air inlet passage is provided with a flat-shaped discharging passage.

[0019] Compared with the prior art, the advantages of the present application are that:

[0020] 1. The grinding equipment designed in the present application can impact the raw materials in the coarse material grinding cylinder to break the raw materials, and can grind the materials in the fine material grinding cylinder, compared with the traditional grinding equipment, the grinding equipment designed in the present application can better utilize the space of the grinding cylinder, and the ball mill has a smaller volume.

[0021] 2, the first spiral piece structure and the second spiral piece structure of the present application are provided, which can ensure that the ground material and the newly added material can move slowly, so that the heat exchange between the ground material and the new material can be sufficient, and the first spiral piece structure and the second spiral piece structure can scrape the material on the wall surface of the inner mounting cylinder and the outer mounting cylinder during rotation, so as to prevent the material from sticking to the wall surface of the inner mounting cylinder and the outer mounting cylinder after heating, and affect heat conduction, and the first spiral piece structure and the second spiral piece structure can fully contact the material on the inner side during rotation, and conduct the heat of the material on the inner side.

[0022] 3, the first cleaning structure and the second cleaning structure in the present application can clean the upper and lower spiral surfaces of the first spiral piece structure and the outer spiral, so as to prevent the material from sticking to the spiral piece and affecting heat conduction.

[0023] 4, the spiral cleaning piece on the outer ring of the first spiral piece structure in the present application can increase the heat transfer area between the inner mounting cylinder and the outer mounting cylinder, and improve the heat transfer efficiency. The spiral cleaning piece on the second spiral piece structure in the present application can increase the heat transfer area between the inner mounting cylinder and the outer mounting cylinder, and improve the heat transfer efficiency; and the spiral cleaning piece on the outer ring can also block the passage between the outer shell and the outer mounting cylinder.

[0024] 5, the heat preservation layer is arranged on the outer side of the outer mounting cylinder in the present application, which can play a heat preservation role. In addition, if heat passes through the heat preservation layer and enters the annular air tank, the gas in the annular air tank will be heated; after the annular air tank absorbs heat from the heat preservation layer, the gas in the annular air tank will be heated, and after the gas is blown into the new material inlet, the added new material can be heated, and in the case that the heat preservation capacity of the heat preservation layer is limited, the heat can be fully utilized. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the outer mounting cylinder of the grinding equipment.

[0026] Figure 2 is a schematic diagram of the gear combination rack cooperation.

[0027] Figure 3 is a schematic diagram of the coarse material grinding cylinder and the fine material grinding cylinder installation.

[0028] Figure 4 is a schematic diagram of the coarse material grinding cylinder and the fine material grinding cylinder distribution.

[0029] Figure 5 is a schematic diagram of the iron ball distribution.

[0030] Figure 6 is a schematic diagram of the appearance of the heat circulation equipment.

[0031] Figure 7is the schematic diagram of the structure distribution of the heat circulation equipment.

[0032] Figure 8 is the schematic diagram of the internal structure installation of the inner installation cylinder.

[0033] Figure 9 is the schematic diagram of the installation of the first cleaning structure.

[0034] Figure 10 is the schematic diagram of the installation of the transmission shaft.

[0035] Figure 11 is the schematic diagram of the installation of the second spiral piece structure.

[0036] Figure 12 is the schematic diagram of the installation of the rotating sleeve.

[0037] Figure 13 is the schematic diagram of the installation of the second cleaning structure.

[0038] Figure 14 is the schematic diagram of the structure of the second cleaning structure.

[0039] Figure 15 is the schematic diagram of the distribution of the heat preservation layer.

[0040] Figure 16 is the schematic diagram of the installation of the connecting pipe.

[0041] Figure label name: 1, support; 2, feeding port; 3, discharging port; 4, first motor; 5, fixed cylinder; 6, second motor; 7, gear set; 8, rack; 9, coarse material grinding cylinder; 10, fine material grinding cylinder; 11, fixed support; 12, connecting block; 13, coarse material filtering hole; 14, fine material filtering hole; 15, grinding material inlet; 16, new material outlet; 17, annular air tank; 18, support rod; 19, base; 20, grinding material outlet; 21, new material inlet; 22, first spiral piece structure; 23, third motor; 24, fourth motor; 25, square shaft; 26, transmission sleeve; 27, inner installation cylinder; 28, first cleaning structure; 29, spiral cleaning piece; 30, connecting rod; 31, first spiral cleaning port; 32, square hole; 33, outer installation cylinder; 34, transmission shaft; 35, second spiral piece structure; 36, first gear; 37, second cleaning structure; 38, rotating sleeve; 39, second gear; 40, fifth motor; 41, sixth motor; 42, guide chute; 43, guide sliding block; 44, second spiral cleaning port; 45, heat preservation layer; 46, air port; 47, connecting pipe; 48, square channel; 49, air flow channel; 50, discharging channel; 51, steel ball; 52, grinding equipment; 53, heat circulation equipment; 54, gear ring. DETAILED DESCRIPTION

[0042] The specific embodiments of the present application are described in further detail below in conjunction with the accompanying drawings and examples. The following examples or drawings are used to illustrate the present application, but not to limit the scope of the present application.

[0043] A lithium mica lithium extraction energy-saving ball mill device, as shown in Figure 1 、 6 , it includes grinding equipment 52 and heat circulation equipment 53.

[0044] As shown in Figure 1 、 3 , 4, the grinding equipment 52 includes a support 1, a first motor 4, a fixed cylinder 5, a second motor 6, a gear set 7, a rack 8, a coarse material grinding cylinder 9, a fine material grinding cylinder 10, a fixed support 11, a connecting block 12, wherein the fixed cylinder 5 is swing mounted on the support 1, and the first motor 4 is mounted on the support 1, as shown in Figure 2 , the swing shaft of the fixed cylinder 5 is fixedly installed with an arc-shaped rack 8, and the output shaft of the first motor 4 is connected with the rack 8 through gear transmission; the bottom of the fixed cylinder 5 has a discharge port 3, and the rear end of the fixed cylinder 5 is fixedly installed with a feeding port 2 through the fixed support 11; the inner side of the fixed cylinder 5 is rotatably installed with the fine material grinding cylinder 10, and the fine material grinding cylinder 10 is fixedly installed with the coarse material grinding cylinder 9 through the connecting block 12; the end face of the fixed cylinder 5 is fixedly installed with the second motor 6, and the output shaft of the second motor 6 is fixedly connected with the coarse material grinding cylinder 9; as shown in Figure 4 、 5 , the outer circular surface of the coarse material grinding cylinder 9 has two coarse material filtering areas uniformly provided with coarse material filtering holes 13, and the other areas of the outer circular surface of the coarse material grinding cylinder 9 are provided with electromagnetic block assemblies; the outer circular surface of the fine material grinding cylinder 10 has two fine material filtering areas uniformly provided with fine material filtering holes 14, and the other areas of the outer circular surface of the fine material grinding cylinder 10 are provided with electromagnetic block assemblies; the coarse material grinding cylinder 9 and the fine material grinding cylinder 10 are both placed with steel balls 51.

[0045] As shown in Figure 6 、 7 , the heat circulation equipment 53 includes an annular air tank 17, a support rod 18, a base 19, a first spiral blade structure 22, a third motor 23, a fourth motor 24, a square shaft 25, a transmission sleeve 26, an inner mounting cylinder 27, a first cleaning structure 28, an outer mounting cylinder 33, a transmission shaft 34, a second spiral blade structure 35, a second cleaning structure 37, a rotating sleeve 38, a fifth motor 40, a sixth motor 41, a heat preservation layer 45, wherein the inner mounting cylinder 27, the outer mounting cylinder 33, the heat preservation layer 45 and the annular air tank 17 are fixedly installed on the upper side of the base 19 through two support rods 18; as shown in Figure 7 、 8As shown, the upper end of the inner mounting cylinder 27 has the abrasive inlet 15, and the lower end of the inner mounting cylinder 27 has the abrasive outlet; the inner side of the inner mounting cylinder 27 is rotatably mounted with the square shaft 25 and the first spiral blade structure 22; the square shaft 25 is slidably mounted with the first cleaning structure 28, such as Figure 9 As shown, the center of the first cleaning structure 28 has the square hole 32 slidably connected with the square shaft 25, and the square hole 32 has the spiral first spiral cleaning port 31 with the ring wall of the first cleaning structure 28, such as Figure 9 As shown, the first spiral cleaning port 31 is in close contact and sliding fit with the upper and lower spiral surfaces of the first spiral blade structure 22; the outer ring of the first spiral blade structure 22 has the spiral cleaning blade 29, and the spiral cleaning blade 29 is fixedly mounted with the plurality of connecting rods 30 uniformly in the circumferential direction, such as Figure 8 As shown, the lower end of the first spiral blade structure 22 is fixedly mounted with the transmission sleeve 26, and the lower end of the inner mounting cylinder 27 is fixedly mounted with the fourth motor 24 capable of driving the transmission sleeve 26 to rotate; the two third motors 23 are fixedly mounted at the upper and lower ends of the inner mounting cylinder 27, and the output shafts of the two third motors 23 are respectively drivingly connected with the upper and lower ends of the square shaft 25 through the gear transmission.

[0046] The fourth motor 24 can drive the transmission sleeve 26 to rotate, and the transmission sleeve 26 drives the first spiral blade structure 22 to rotate relative to the inner mounting cylinder 27. The second motor 6 can drive the square shaft 25 to rotate relative to the inner mounting cylinder 27, and the square shaft 25 can drive the first cleaning structure 28 to rotate through the square hole 32; when the square shaft 25 and the first spiral blade structure 22 rotate at the same speed, the first cleaning structure 28 mounted on the square shaft 25 is stationary relative to the first spiral blade structure 22; when the rotation direction of the square shaft 25 is the same as that of the first spiral blade structure 22 and the rotation speed of the square shaft 25 is greater than that of the first spiral blade structure 22, that is, the rotation speed of the first cleaning structure 28 is less than that of the first spiral blade structure 22, the first cleaning structure 28 will move upward along the first spiral blade structure 22, and in the moving process, the first cleaning structure 28 plays a cleaning role on the material adhered on the first spiral blade structure 22 through the first spiral cleaning port 31 thereon.

[0047] The spiral cleaning blade 29 on the outer ring of the first spiral blade structure 22 in the application serves to increase the heat transfer area between the inner mounting cylinder 27 and the outer mounting cylinder 33 and improve the heat transfer efficiency.

[0048] In order to improve the heat exchange effect and increase the heat cycle efficiency, the inner mounting cylinder 27, the outer mounting cylinder 33, the square shaft 25, the first spiral piece structure 22 and the second spiral piece structure 35 are relatively long, and motors are arranged at the upper and lower ends of the square shaft 25, and the rotation of the second spiral piece structure 35 is driven by the first gears 36 which are uniformly distributed on the upper and lower ends of the second spiral piece structure 35, so that the stability of the rotation of the second spiral piece structure 35 is ensured; meanwhile, the connecting rods 30 are arranged on the outer ring of the first spiral piece structure 22, and the strength of the first spiral piece structure 22 is increased through the connecting rods 30.

[0049] As shown in Figure 12 , the outer side of the inner mounting cylinder 27 is rotatably provided with a rotating sleeve 38, the lower end of the rotating sleeve 38 is provided with teeth, and two guide sliding grooves 42 are symmetrically formed on the rotating sleeve 38; the outer mounting cylinder 33 is arranged on the outer side of the inner mounting cylinder 27, and as shown in Figure 10 、 11 , the upper end of the outer mounting cylinder 33 is provided with a new material outlet 16, and the lower end of the outer mounting cylinder 33 is provided with a new material inlet 21; the inner side of the outer mounting cylinder 33 is rotatably provided with the second spiral piece structure 35; as shown in Figure 12 , the second spiral piece structure 35 is slidably provided with a second cleaning structure 37, and as shown in Figure 14 , the outer side of the second cleaning structure 37 is symmetrically provided with two guide sliding blocks 43, and as shown in Figure 13 , the guide sliding blocks 43 and the guide sliding grooves 42 are slidably matched one by one; as shown in Figure 14 , the second cleaning structure 37 is provided with a second spiral cleaning port 44, and as shown in Figure 13 , the second spiral cleaning port 44 is in close contact and sliding fit with the upper and lower spiral surfaces of the second spiral piece structure 35; the inner and outer rings of the second spiral piece structure 35 are both provided with spiral cleaning pieces 29, and as shown in Figure 12 , the outer side of the second spiral piece structure 35 is fixedly provided with a plurality of tooth rings 54 which are uniformly distributed from top to bottom; as shown in Figure 11 , the lower end of the outer mounting cylinder 33 is fixedly provided with a sixth motor 41 and a fifth motor 40; a plurality of first gears 36 are uniformly arranged on the output shaft of the sixth motor 41, the first gears 36 correspond to the tooth rings 54 one by one and are respectively engaged with each other; the second gear 39 is fixedly arranged on the output shaft of the fifth motor 40, and the second gear 39 is engaged with the rotating sleeve 38.

[0050] The sixth motor 41 can drive the first gear 36 to rotate, the first gear 36 drives the gear ring 54 to rotate, the gear ring 54 drives the second spiral piece structure 35 to rotate relative to the inner mounting cylinder 27 and the outer mounting cylinder 33. The fifth motor 40 can drive the second gear 39 to rotate, the second gear 39 drives the rotating sleeve 38 to rotate, the rotating sleeve 38 drives the second cleaning structure 37 to rotate; when the second cleaning structure 37 rotates at the same speed as the second spiral piece structure 35, the second cleaning structure 37 is stationary relative to the second spiral piece structure 35; when the rotation speed of the second cleaning structure 37 is zero or the rotation direction of the second cleaning structure 37 is the same as that of the second spiral piece structure 35 and the rotation speed of the second cleaning structure 37 is less than that of the second spiral piece structure 35, the second cleaning structure 37 will move upwards along the second spiral piece structure 35, and in the moving process, the second cleaning structure 37 plays a cleaning role on the material adhered on the second spiral piece structure 35 through the second spiral cleaning port 44 thereon. The spiral cleaning piece 29 on the second spiral piece structure 35 in the application increases the heat transfer area between the inner mounting cylinder 27 and the outer mounting cylinder 33 and between the outer mounting cylinder 33 and the heat preservation layer 45, and improves the heat transfer efficiency.

[0051] The outer side of the outer mounting cylinder 33 is wrapped with a heat preservation layer 45, and the lower end of the heat preservation layer 45 is located on the upper side of the new material inlet 21. In the application, the heat preservation layer 45 is arranged on the outer side of the outer mounting cylinder 33, and the heat preservation layer 45 plays a heat preservation role. In addition, if heat passes through the heat preservation layer 45 into the annular air tank 17, the gas in the annular air tank 17 will be heated; after the annular air tank 17 absorbs heat from the heat preservation layer 45, the gas in the annular air tank 17 will be heated, and after the gas is blown into the new material inlet 21, the new material added can be heated, so that the heat is fully utilized under the condition that the heat preservation capacity of the heat preservation layer 45 is limited.

[0052] As shown in Figure 15 , 16 , the outer side of the heat preservation layer 45 is provided with an annular air tank 17, the upper side of the annular air tank 17 is provided with a gas port 46, the lower side of the annular air tank 17 is connected with the new material inlet 21 through a connecting pipe 47, the gas flow channel 49 at the connection between the connecting pipe 47 and the new material inlet 21 is in strip shape; the new material inlet 21 is located on the upper side of the gas inlet channel and is provided with a flat-shaped material discharging channel 50. The flat-shaped material discharging channel 50 can ensure that the new material can be fully heated by the gas blown from the gas flow channel 49 when the new material enters, and the gas flow channel 49 is designed in strip shape to ensure the intensity of the gas entering the new material inlet 21, so that the new material can be fully heated.

[0053] In the application, after the annular air tank 17 absorbs heat from the heat preservation layer 45, the gas in the annular air tank 17 will be heated, and after the gas is blown into the new material inlet 21, the new material added can be heated, so that the heat is fully utilized.

[0054] The first spiral structure 22 and the second spiral structure 35 can ensure that the ground material and the newly added material can move slowly, so that the ground material and the newly added material can be fully exchanged in heat; the first spiral structure 22 and the second spiral structure 35 can scrape the material on the wall surface of the inner mounting cylinder 27 and the outer mounting cylinder 33 in the rotating process, so as to prevent the material from being adhered to the wall surface of the inner mounting cylinder 27 and the outer mounting cylinder 33 after being heated, and affect heat conduction; meanwhile, the first spiral structure 22 and the second spiral structure 35 can fully contact the material on the inner side in the rotating process, and conduct the heat of the material on the inner side.

[0055] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification or equivalent change made on the basis of the technical essence of the present application to the above embodiment falls within the protection scope of the present application.

[0056] When the device designed according to the present application is used, the rear end of the fixed cylinder 5 is controlled to swing upward by a small angle by the first motor 4, and the fixed cylinder 5 drives the coarse material grinding cylinder 9 and the fine material grinding cylinder 10 to swing upward, so that the fixed cylinder 5 is in an inclined state. At this time, the raw material is added from the feeding port 2. After the raw material is added, the fixed cylinder 5, the coarse material grinding cylinder 9 and the fine material grinding cylinder 10 are controlled to swing to a horizontal state by the first motor 4. The coarse material grinding cylinder 9 is controlled to rotate by the second motor 6, and the fine material grinding cylinder 10 is driven to rotate by the connecting block 12. That is, the coarse material grinding cylinder 9 and the fine material grinding cylinder 10 rotate together with the fixed cylinder 5. In the rotating process, when the area of the coarse material grinding cylinder 9 and the fine material grinding cylinder 10, on which the electromagnetic block assembly is installed, rotates to the lowest end, the electromagnetic block assembly in the area is controlled to be powered on, so that the steel ball 51 installed in the cylinder is adsorbed on the inner wall of the area. Then, the rotation is continued. When the area of the coarse material grinding cylinder 9 and the fine material grinding cylinder 10, on which the electromagnetic block assembly is installed, rotates to the highest point, the electromagnetic block assembly in the area is controlled to be powered off to lose the suction force. The steel ball 51 falls down under the action of its own gravity, and plays a role of impacting the raw material in the coarse material grinding cylinder 9 to crush the raw material. The steel ball 51 in the fine material grinding cylinder 10 falls down along the wall surface of the fine material grinding cylinder 10 under the action of its own gravity, and plays a role of grinding the material in the fine material grinding cylinder 10. The fine material filtering hole 14 plays a role of filtering the ground material of a proper size. The filtered material enters the fixed cylinder 5, and is discharged from the discharge port 3 at the lower end of the fixed cylinder 5. The coarse material filtering hole 13 plays a role of filtering the impacted material, so that the material of a proper size enters the fine material grinding cylinder 10 for further grinding.

[0057] The abrasive is added from the abrasive inlet 15, and the new material is added from the new material inlet; in use, the third motor 23, the fourth motor 24, the fifth motor 40 and the sixth motor 41 are controlled to work, the fourth motor 24 can drive the transmission sleeve 26 to rotate, the transmission sleeve 26 rotates to drive the first spiral blade structure 22 to rotate relative to the inner mounting cylinder 27. The second motor 6 can drive the square shaft 25 to rotate relative to the inner mounting cylinder 27, and the square shaft 25 can drive the first cleaning structure 28 to rotate through the square hole 32; the sixth motor 41 can drive the first gear 36 to rotate, the first gear 36 drives the gear ring 54 to rotate, and the gear ring 54 drives the second spiral blade structure 35 to rotate relative to the inner mounting cylinder 27 and the outer mounting cylinder 33. The fifth motor 40 can drive the second gear 39 to rotate, the second gear 39 drives the rotating sleeve 38 to rotate, and the rotating sleeve 38 drives the second cleaning structure 37 to rotate; in the normal use process, the second cleaning structure 37 and the second spiral blade structure 35 are controlled to rotate at the same speed, the square shaft 25 and the first spiral blade structure 22 are controlled to rotate at the same speed, and the first cleaning structure 28 mounted on the square shaft 25 is stationary relative to the first spiral blade structure 22; in this state, the rotation of the first spiral blade structure 22 will transport the abrasive downward, and the rotation of the second spiral blade structure 35 will transport the new material upward, and in the transportation process, the heat of the abrasive is transferred to the new material in the inner mounting cylinder 27 through the first spiral blade structure 22, the spiral cleaning blade 29 on the first spiral blade structure 22, the inner mounting cylinder 27, the second spiral blade structure 35 and the spiral cleaning blade 29 on the second spiral blade structure 35 to heat the new material; heat circulation is achieved.

[0058] When it is necessary to clean the material adhered to the first spiral blade structure 22, the rotation direction of the square shaft 25 is controlled to be the same as that of the first spiral blade structure 22, and the rotation speed of the square shaft 25 is greater than that of the first spiral blade structure 22, that is, the rotation speed of the first cleaning structure 28 is less than that of the first spiral blade structure 22, so that the first cleaning structure 28 moves upward along the first spiral blade structure 22, and in the movement process, the first cleaning structure 28 plays a cleaning role on the material adhered to the first spiral blade structure 22 through the first spiral cleaning port 31 thereon; after the first cleaning structure 28 moves to the upper side, the first cleaning structure 28 is controlled to have no rotation speed, the rotation speed of the first cleaning structure 28 is less than that of the first spiral blade structure 22, or the rotation direction of the first cleaning structure 28 is opposite to that of the first spiral blade structure 22, so that the first cleaning structure 28 moves downward relative to the first spiral blade structure 22, and plays a repeated cleaning role on the material adhered to the first spiral blade structure 22 in the movement.

[0059] When the material adhered to the second spiral structure 35 needs to be cleaned, the rotation speed of the second cleaning structure 37 is controlled to be zero or the rotation direction of the second cleaning structure 37 is the same as that of the second spiral structure 35 and the rotation speed of the second cleaning structure 37 is less than that of the second spiral structure 35, so that the second cleaning structure 37 moves upwards along the second spiral structure 35, and in the process, the second cleaning structure 37 plays a cleaning role on the material adhered to the second spiral structure 35 through the second spiral cleaning port 44 thereon; when the second cleaning structure 37 moves to the upper side, the rotation direction of the second cleaning structure 37 is controlled to be the same as that of the second spiral structure 35 and the rotation speed of the second cleaning structure 37 is greater than that of the second spiral structure 35, so that the second cleaning structure 37 moves downwards relative to the second spiral structure 35, and in the process, the second cleaning structure 37 plays a repeated cleaning role on the material adhered to the second spiral structure 35.

Claims

1. An energy-saving ball mill for lithium extraction from lepidolite, characterized in that: It includes grinding equipment and heat circulation equipment; The grinding equipment includes a support frame, a first motor, a fixed cylinder, a second motor, a coarse material grinding cylinder, and a fine material grinding cylinder. The fixed cylinder is oscillatingly mounted on the support frame, and the first motor capable of driving the fixed cylinder to oscillate is mounted on the support frame. The fixed cylinder has a feed port and a discharge port. The fine material grinding cylinder is rotatably mounted inside the fixed cylinder, and the coarse material grinding cylinder is fixedly mounted inside the fine material grinding cylinder via a connecting block. The second motor is fixedly mounted on the end face of the fixed cylinder, and the output shaft of the second motor is fixedly connected to the coarse material grinding cylinder. The outer circumference of the coarse material grinding cylinder has two sections of coarse material filtering area with uniformly opened coarse material filtering holes, and other areas on the outer circumference of the coarse material grinding cylinder have electromagnetic block assemblies. The outer circumference of the fine material grinding cylinder has two sections of fine material filtering area with uniformly opened fine material filtering holes, and other areas on the outer circumference of the fine material grinding cylinder have electromagnetic block assemblies. Steel balls are placed inside both the coarse and fine material grinding cylinders. The heat circulation equipment includes a base, a first spiral blade structure, a third motor, a fourth motor, an inner mounting cylinder, a square shaft, a first cleaning structure, an outer mounting cylinder, a fifth motor, a second spiral blade structure, a sixth motor, and a second cleaning structure. The inner and outer mounting cylinders are fixedly mounted on the upper side of the base by two support rods. The upper end of the inner mounting cylinder has an abrasive inlet, and the lower end has an abrasive outlet. The first spiral blade structure is rotatably mounted on the inner side of the inner mounting cylinder. The lower end of the inner mounting cylinder is fixedly mounted with a fourth motor capable of driving the first spiral blade structure to rotate. The outer mounting cylinder is nested on the outer side of the inner mounting cylinder, with a fresh material outlet at the upper end and a fresh material inlet at the lower end. The second spiral blade structure is rotatably mounted on the inner side of the outer mounting cylinder. The lower end of the outer mounting cylinder is fixedly mounted with a sixth motor capable of driving the second spiral blade structure to rotate. An arc-shaped rack is fixedly installed on the swing shaft of the fixed cylinder, and the output shaft of the first motor is connected to the rack through gear transmission; the bottom of the fixed cylinder has a discharge port, and the rear end of the fixed cylinder is fixedly installed with a feeding port through a fixed support; A square shaft is rotatably mounted on the inner side of the inner mounting cylinder; a first cleaning structure is slidably mounted on the square shaft, the center of the first cleaning structure has a square hole that is slidably connected to the square shaft, and a spiral first spiral cleaning port is provided between the square hole and the annular wall of the first cleaning structure. The first spiral cleaning port is in close contact with and slidably fitted with the upper and lower spiral surfaces of the first spiral plate structure; two third motors are fixedly mounted at the upper and lower ends of the inner mounting cylinder, and the output shafts of the two third motors are respectively connected to the upper and lower ends of the square shaft through gear transmission. The outer ring of the first spiral blade structure has a spiral cleaning blade, and multiple connecting rods are evenly fixedly installed on the spiral cleaning blade in the circumferential direction; A rotating sleeve is rotatably mounted on the outer side of the inner mounting cylinder. The lower end of the rotating sleeve has teeth, and two guide grooves are symmetrically opened on the rotating sleeve. A second cleaning structure is slidably mounted on the second spiral blade structure. Two guide sliders are symmetrically mounted on the outer side of the second cleaning structure, and the guide sliders and guide grooves are slidably engaged. The second cleaning structure has a spiral second spiral cleaning port, which is in close contact with and slidably engaged with the upper and lower spiral surfaces of the second spiral blade structure. A fifth motor is fixedly mounted on the lower end of the outer mounting cylinder. A second gear is fixedly mounted on the output shaft of the fifth motor, and the second gear meshes with the rotating sleeve.

2. The energy-saving ball mill equipment for lithium extraction from lepidolite according to claim 1, characterized in that: A transmission sleeve is fixedly installed at the lower end of the first spiral blade structure, and a fourth motor capable of driving the transmission sleeve to rotate is fixedly installed at the lower end of the inner mounting cylinder.

3. The energy-saving ball mill equipment for lithium extraction from lepidolite according to claim 1, characterized in that: Spiral cleaning blades are installed on both the inner and outer rings of the second spiral blade structure.

4. The energy-saving ball mill equipment for lithium extraction from lepidolite according to claim 1, characterized in that: Multiple toothed rings evenly distributed from top to bottom are fixedly installed on the outer side of the second spiral blade structure; a sixth motor is fixedly installed at the lower end of the outer mounting cylinder; multiple first gears are evenly installed on the output shaft of the sixth motor, and the first gears correspond one-to-one with the toothed rings and mesh with each other respectively.

5. The energy-saving ball mill equipment for lithium extraction from lepidolite according to claim 1, characterized in that: The outer casing is wrapped with an insulation layer, and the lower end of the insulation layer is located above the new material inlet.

6. The energy-saving ball mill equipment for lithium extraction from lepidolite according to claim 5, characterized in that: An annular air box is installed on the outside of the insulation layer. The upper side of the annular air box has an air inlet. The lower side of the annular air box is connected to the new material inlet through a connecting pipe. The airflow channel at the connection between the connecting pipe and the new material inlet is strip-shaped. The new material inlet is located above the air inlet channel and has a flat material feeding channel.

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