Roasting system for leaching lithium extraction of salt lake deposited clay type lithium ore

Abstract

The invention discloses a roasting system for leaching and lithium extraction of salt lake deposited clay type lithium ores, and belongs to the technical field of salt lake resource development and lithium extraction, the roasting system comprises a rack, the rack is provided with a preheating mechanism, a rotary driving mechanism and a roasting box, the preheating mechanism is used for preheating the leached salt lake deposited clay type lithium ores, and the rotary driving mechanism is used for driving the roasting box to rotate; the preheating mechanism is composed of a charging barrel, a lower conical barrel, a communicating pipe and a preheating box, a first rotating guide ring is arranged at the lower end of the charging barrel, and a first guide ring cavity is formed in an upper cavity opening of the lower conical barrel; the lower conical barrel adopts a rotating mode, and a matching structure of a first rotating guide ring at the lower end of the matched charging barrel and a first guide ring cavity at an upper cavity opening of the lower conical barrel is adopted, so that continuous circumferential shearing force and radial pushing force can be generated on the lithium ore which is high in viscosity and easy to cake after leaching, and the lithium ore is turned over along the inner wall of the conical barrel through rotation; local accumulation dead angles are avoided, and the problem that materials are bonded and blocked in a traditional fixing structure is solved.

Description

Technical Field

[0001] This invention belongs to the field of salt lake resource development and lithium extraction technology, specifically relating to a roasting system for leaching and extracting lithium from salt lake sedimentary clay-type lithium ore. Background Technology

[0002] Salt lake sedimentary clay-type lithium deposits, as important lithium resource reserves, have become a research hotspot in the field of lithium extraction due to their abundant reserves and wide distribution, against the backdrop of the rapid development of the new energy industry. Currently, the lithium extraction process for this type of lithium deposit is mainly based on leaching. However, during the leaching process, some lithium elements may still remain in the slag in a poorly soluble form. To solve the above problems, the industry has gradually formed a technical approach of leaching-roasting combined process. By roasting the leached ore sample, the residual poorly soluble lithium compounds can be converted into a soluble form by means of high temperature. At the same time, the water in the ore sample is evaporated, and unreacted leaching agents and related impurity compounds are decomposed, reducing the interference factors in the subsequent purification process, thereby significantly improving the overall lithium recovery rate.

[0003] However, in the leaching-roasting combined lithium extraction process of clay-type lithium deposits in salt lakes, due to the residual moisture and colloidal properties of the leached slag, if traditional fixed-structure preheating equipment is used, the slag is prone to sticking to the inner wall of the equipment due to its poor fluidity, especially in the conical transition area, where it can accumulate and even cause "bridging" phenomena, leading to blockage of the conveying channel. In existing equipment, the fixed chamber of the preheating mechanism cannot actively intervene in the sticking slag, relying only on the material's own weight to fall, which often causes interruption of feeding and requires frequent shutdowns for cleaning, severely restricting the continuity of production. Summary of the Invention

[0004] The purpose of this invention is to provide a roasting system for leaching lithium from clay-type lithium deposits in salt lakes, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a roasting system for leaching lithium from salt lake sedimentary clay-type lithium ore, comprising a frame, wherein the frame is provided with a preheating mechanism, a rotary drive mechanism and a roasting box;

[0006] The preheating mechanism is used to preheat the leached salt lake sedimentary clay-type lithium ore.

[0007] The preheating mechanism consists of a material cylinder, a lower cone cylinder, a connecting pipe, and a preheating box. The lower end of the material cylinder is provided with a first rotating guide ring, and the upper cavity of the lower cone cylinder is provided with a first guide ring cavity.

[0008] The rotary drive mechanism is used to drive the lower cone in the preheating mechanism to rotate;

[0009] The rotary drive mechanism includes a toothed ring disposed around the lower cone, and a drive gear is provided on one side of the toothed ring. The drive gear is connected to the output end of the drive motor.

[0010] The roasting box is used to perform high-temperature roasting of salt lake sedimentary clay-type lithium ore that has been preheated by the preheating mechanism.

[0011] In a preferred embodiment, the roasting box is equipped with a conveying pipe, which is inclined at 35°, with one end connected to the roasting box and the other end connected to a connecting pipe.

[0012] In a preferred embodiment, a first flange and a valve are provided between the preheating box and the connecting pipe. The connecting pipe is connected to the output port of the preheating box through the first flange. The valve is located above the first flange. One end of the conveying pipe is equipped with a second flange, and the conveying pipe is connected to the connecting pipe through the second flange.

[0013] In a preferred embodiment, the lower cavity of the lower cone is further provided with a second guide ring cavity, and a second rotating guide ring is provided around the end of the connecting pipe. The connecting pipe is disposed in the second guide ring cavity in conjunction with the second rotating guide ring.

[0014] In a preferred embodiment, one set of support rods of the frame extends upward and connects to the material cylinder, and the other two sets of support rods of the frame are fixedly connected to limit rings, with the lower cone cylinder disposed in the limit rings.

[0015] In a preferred embodiment, the side wall of the limiting ring is connected to a motor mounting bracket, and the drive motor is mounted on one side of the limiting ring in cooperation with the motor mounting bracket.

[0016] In a preferred embodiment, the side wall of the material cylinder is provided with a feed hopper, which is inclined.

[0017] In a preferred embodiment, the material cylinder is further provided with a preheating feeding control mechanism, which includes a baffle ring with a vent hole and is located directly above the lower cavity opening of the lower cone cylinder.

[0018] In a preferred embodiment, the preheating feeding control mechanism further includes an adjusting rod, a rotating shaft, and an adjusting motor. The upper edge of the adjusting rod is provided with structural teeth. The rotating shaft is mounted on the top cover of the material cylinder via two sets of support seats. The adjusting motor is mounted on one set of support seats and is connected to the rotating shaft for transmission. An adjusting tooth is fixed in the middle of the rotating shaft, and the adjusting tooth meshes with the structural teeth.

[0019] In a preferred embodiment, guide rods extend from both sides of the adjusting rod, and both guide rods pass through the top cover of the material cylinder.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This roasting system for leaching lithium from clay-type lithium deposits in salt lakes utilizes a rotating lower cone. A matching structure between the first rotating guide ring at the lower end of the cylinder and the first guide ring cavity at the upper opening of the lower cone generates continuous circumferential shear force and radial thrust on the leached, viscous lithium ore that is prone to agglomeration. The rotation causes the lithium ore to tumble along the inner wall of the cone, breaking up agglomerated materials while preventing the formation of dead zones in localized accumulation areas, thus solving the problem of material adhesion and blockage in traditional fixed structures.

[0022] The roasting system for leaching lithium from clay-type lithium deposits in this salt lake utilizes a horizontally rotating lower cone to smoothly collect lithium ore towards the central outlet through circumferential thrust. The rotational engagement of the second guide ring cavity at the lower opening of the lower cone and the second rotating guide ring of the connecting pipe ensures that the lithium ore enters the connecting pipe evenly. Meanwhile, the 35° inclined conveyor pipe, through the combined effect of gravity and horizontal rotation, ensures that the lithium ore enters the roasting box at a stable speed, guaranteeing a continuous connection between the preheating and roasting processes, reducing heat loss, and improving overall process efficiency.

[0023] The roasting system for leaching lithium from salt lake sedimentary clay-type lithium ore utilizes a horizontal rotation design of the lower cone to keep its rotation axis parallel to the support plane of the limiting ring. The radial constraint of the limiting ring on the lower cone is more closely aligned with the force direction, effectively counteracting the centrifugal force generated during rotation and reducing overall equipment vibration. At the same time, in the horizontal rotation state, the meshing surface of the toothed ring on the periphery of the lower cone and the drive gear is subjected to uniform force, avoiding localized wear of gears or fluctuations in meshing clearance that may be caused by non-horizontal rotation. This reduces the wear rate of transmission components, extends the service life of the equipment, and reduces maintenance costs.

[0024] The roasting system for leaching lithium from clay-type lithium deposits in this salt lake uses a baffle ring initially positioned above the lower cavity of the lower cone. This creates a space that allows the lithium ore to accumulate stably between the lower cone and the feed cylinder. At this time, hot air from the preheating chamber can enter the accumulated lithium ore through the vent holes on the baffle ring, ensuring that the hot airflow contacts the lithium ore. After preheating, the motor drives the baffle ring to move upward, opening the lower cavity of the lower cone. Simultaneously, the thrust generated by the horizontal rotation of the lower cone allows the preheated lithium ore to be discharged quickly and smoothly from the lower cavity, avoiding blockages caused by the high viscosity of the lithium ore. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the preheating mechanism of the present invention.

[0027] Figure 3This is a schematic diagram of the installation structure of the preheating and feeding control mechanism of the present invention;

[0028] Figure 4 This is a schematic diagram of the installation structure of the material cylinder and the lower cone cylinder of the present invention;

[0029] Figure 5 This is a schematic diagram of the material retaining ring installation structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the mounting structure of the lower cone and the toothed ring of the present invention;

[0031] Figure 7 This is a first-view view of the lower cone-shaped cylinder of the present invention.

[0032] Figure 8 This is a second-view view of the lower cone-shaped cylinder of the present invention.

[0033] In the diagram: 1. Frame; 11. Limiting ring; 2. Preheating mechanism; 21. Material cylinder; 211. Feed hopper; 212. First rotating guide ring; 22. Lower cone cylinder; 221. First guide ring cavity; 222. Second guide ring cavity; 23. Connecting pipe; 231. Second rotating guide ring; 24. Preheating box; 25. First flange plate; 26. Valve; 3. Rotary drive mechanism; 31. Gear ring; 32. Drive gear; 33. Drive motor; 34. Motor mounting bracket; 4. Calcination box; 41. Conveying pipe; 42. Second flange plate; 5. Preheating and feeding control mechanism; 51. Material retaining ring; 511. Vent hole; 52. Adjusting rod; 521. Structural teeth; 522. Guide rod; 53. Adjusting teeth; 54. Rotating shaft; 55. Adjusting motor. Detailed Implementation

[0034] The present invention will be further described below with reference to embodiments.

[0035] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0036] Please see Figures 1-8This invention provides a roasting system for lithium extraction from leached clay-type lithium ore in salt lakes, comprising a frame 1, a preheating mechanism 2, a rotary drive mechanism 3, and a roasting box 4. The preheating mechanism 2 is used to preheat the leached clay-type lithium ore from salt lakes. The preheating mechanism 2 consists of a feed cylinder 21, a lower cone cylinder 22, a connecting pipe 23, and a preheating box 24. The feed cylinder 21 has a feed hopper 211 on its side wall, which is inclined. The lower end of the feed cylinder 21 has a first rotating guide ring 212. The upper cavity of the lower cone cylinder 22 has a first guide ring cavity 221, and the lower cavity of the lower cone cylinder 22 also has a second guide ring cavity 222. The outer periphery of the end of the connecting pipe 23 has a second rotating guide ring 231, which cooperates with the second rotating guide ring 231. Located in the second guide ring cavity 222, a set of support rods of the frame 1 extends upward and connects to the material cylinder 21. The other two sets of support rods of the frame 1 are connected to the limiting ring 11. The lower cone cylinder 22 is located in the limiting ring 11. The rotary drive mechanism 3 is used to drive the lower cone cylinder 22 in the preheating mechanism 2 to rotate. The rotary drive mechanism 3 includes a toothed ring 31 located around the lower cone cylinder 22. A drive gear 32 is provided on one side of the toothed ring 31. The drive gear 32 is connected to the output end of the drive motor 33. The roasting box 4 is used to perform high-temperature roasting treatment on the salt lake sediment clay-type lithium ore preheated by the preheating mechanism 2. The roasting box 4 is equipped with a conveying pipe 41. The conveying pipe 41 is set at a 35° inclination. One end of it is connected to the roasting box 4, and the other end is connected to the connecting pipe 23.

[0037] In this embodiment, the first rotating guide ring 212 at the lower end of the material cylinder 21 is adapted to the first guide ring cavity 221 at the upper cavity of the lower cone cylinder 22, and the second guide ring cavity 222 at the lower cavity of the lower cone cylinder 22 is matched with the second rotating guide ring 231 at the end of the connecting pipe 23, so that the lower cone cylinder 22 can achieve stable horizontal rotation under the drive of the rotating drive mechanism 3. This structural design can scrape the highly viscous lithium ore after leaching, avoiding the accumulation and blockage of material in the preheating mechanism 2. At the same time, the inclined feed hopper 211 facilitates the smooth entry of material into the material cylinder 21, and the 35° inclined conveying pipe 41 helps the preheated material to quickly enter the roasting box 4 with the help of gravity. The entire process reduces the obstruction of material conveying and improves the adaptability of the equipment to highly viscous slag.

[0038] In this embodiment, the frame 1 is connected to the material cylinder 21 by a set of support rods and to the limiting ring 11 by two other sets of support rods. The limiting ring 11 provides stable support for the lower cone cylinder 22, making the rotation force of the lower cone cylinder 22 more balanced and reducing vibration during operation. At the same time, the transmission structure of the drive motor 33, drive gear 32, and gear ring 31 in the rotary drive mechanism 3 is compact. Combined with the installation and positioning of the side wall of the limiting ring 11, it ensures the accuracy of power transmission, reduces wear between components, extends the overall service life of the equipment, and reduces maintenance costs.

[0039] The limiting ring 11 is made of high-strength alloy cast iron, which has high compressive strength and wear resistance, and can stably support the horizontal rotation of the lower cone 22 and resist the radial impact force generated during the rotation.

[0040] Please see Figures 1-3 A first flange 25 and a valve 26 are provided between the preheating box 24 and the connecting pipe 23. The connecting pipe 23 is connected to the output port of the preheating box 24 through the first flange 25. The valve 26 is located near the lower part of the conveying pipe 41. A second flange 42 is installed at one end of the conveying pipe 41. The conveying pipe 41 is connected to the connecting pipe 23 through the second flange 42.

[0041] In this embodiment, the preheating box 24 and the connecting pipe 23 are connected by the first flange plate 25, and the conveying pipe 41 and the connecting pipe 23 are connected by the second flange plate 42. The rigid connection structure of the flange plate can improve the sealing of the connection of each component, effectively preventing the leakage of hot air or lithium ore during the preheating process. At the same time, the flange connection is easy to disassemble and maintain, and can quickly replace worn parts, ensuring the long-term stable operation of the equipment.

[0042] In this embodiment, the flow rate of hot air delivered from the preheating box 24 to the connecting pipe 23 can be flexibly controlled by the valve 26 located above the first flange plate 25. The preheating box 24 adopts the existing RXL-1-2 series preheating furnace, and its working principle will not be described in detail here.

[0043] It is worth mentioning that the output port of the preheating box 24 is equipped with a filter screen plate by a snap-fit ​​design. The filter screen plate can catch lithium ore falling from the connecting pipe 23, effectively preventing the falling lithium ore from directly entering the preheating box 24 and causing pollution or blockage. In addition, the snap-fit ​​support structure makes it easier to install and remove the filter screen plate. When a certain amount of lithium ore accumulates on the filter screen plate or a blockage occurs, the operator can remove the first flange plate 25 and then remove the filter screen plate from the output port of the preheating box 24 for cleaning or replacement. The operation is simple and efficient, and will not cause long-term interference to the overall operation of the equipment, ensuring the continuity of production.

[0044] Please see Figure 3 The side wall of the limiting ring 11 is connected to the motor mounting bracket 34, and the drive motor 33 is located on one side of the limiting ring 11 in cooperation with the motor mounting bracket 34.

[0045] Please see Figures 2-8The material cylinder 21 is also equipped with a preheating feeding control mechanism 5. The preheating feeding control mechanism 5 includes a baffle ring 51 with a vent hole 511. The baffle ring 51 is located directly above the lower cavity of the lower cone cylinder 22. The preheating feeding control mechanism 5 also includes an adjusting rod 52, a rotating shaft 54, and an adjusting motor 55. The upper edge of the adjusting rod 52 is provided with a structural tooth 521. The rotating shaft 54 ​​is mounted on the top cover of the material cylinder 21 through two sets of support seats. The adjusting motor 55 is mounted on one of the support seats and is connected to the rotating shaft 54 ​​for transmission. An adjusting tooth 53 is fixed in the middle of the rotating shaft 54. The adjusting tooth 53 meshes with the structural tooth 521. Guide rods 522 extend from both sides of the adjusting rod 52. Both guide rods 522 pass through the top cover of the material cylinder 21.

[0046] In this embodiment, the baffle ring 51 is located directly above the lower cavity of the lower cone 22. The vent holes 511 on its surface provide a flow channel for the hot airflow delivered by the preheating box 24, so that the hot airflow can be transferred to the lithium ore between the material cylinder 21 and the lower cone 22. At the same time, the space formed by the baffle ring 51 can temporarily store the material, prolonging its contact time with the hot airflow and improving the preheating effect.

[0047] In this embodiment, the regulating motor 55 drives the regulating gear 53 to rotate by driving the rotating shaft 54. The meshing transmission between the regulating gear 53 and the toothed part 521 on the regulating rod 52 can control the lifting height of the baffle ring 51. When material needs to be discharged, the regulating motor 55 drives the baffle ring 51 to move upward, opening the lower cavity of the lower cone 22. With the horizontal rotation of the lower cone 22, the material can be discharged stably, avoiding the obstruction of material discharge caused by the accumulation of sticky slag. When the baffle ring 51 descends, it can close the lower cavity, meeting the needs of material temporary storage and preheating, and realizing flexible control of the material discharge rhythm.

[0048] In this embodiment, when the adjusting motor 55 drives the baffle ring 51 to rise and fall, guide rods 522 extend from both sides of the adjusting rod 52. Both guide rods 522 pass through the top cover of the material cylinder 21, which can restrict the movement trajectory of the adjusting rod 52, so that it can only move in the vertical direction.

[0049] In this embodiment, the lower end of the adjusting rod 52 is threaded, and the baffle ring 51 is detachably connected to the adjusting rod 52 by a spiral. Since different batches of leached lithium ore may have differences in viscosity, particle size and other characteristics, the requirements for the structure of the baffle ring 51 (such as the diameter of the vent hole 511) are different. By using a detachable spiral connection, the appropriate baffle ring 51 can be quickly replaced according to the actual material characteristics, so that the equipment can flexibly cope with different working conditions and improve the equipment's versatility and adaptability to process changes.

[0050] Working principle and usage process of this invention:

[0051] First, the operator pours the leachated salt lake sediment clay-type lithium ore into the equipment through the inclined feed hopper 211 on the side wall of the feed cylinder 21. The lithium ore slides down into the space between the feed cylinder 21 and the lower cone cylinder 22 by gravity. At this time, the baffle ring 51 closes the lower cavity of the lower cone cylinder 22, and the material accumulates in this area to form a temporary storage layer. Then, the valve 26 is opened, and the hot air in the preheating box 24 enters the connecting pipe 23 through the filter plate of the output port, and then passes through the air hole 511 of the baffle ring 51 above the lower cavity of the lower cone cylinder 22, penetrating the accumulated lithium ore layer. The filter plate can catch a small amount of lithium ore falling from the connecting pipe 23 and prevent it from entering the preheating box 24.

[0052] Secondly, the drive motor 33 of the rotary drive mechanism 3 is started, and the lower cone 22 is driven to rotate horizontally through the meshing of the drive gear 32 and the gear ring 31. The rotating lower cone 22 generates circumferential shear force on the lithium ore inside. With the relative movement of the first rotating guide ring 212 and the first guide ring cavity 221, the adhering slag is broken up, ensuring that the hot airflow and the material are in full contact and achieving uniform preheating. During the preheating process, the state of the lithium ore is monitored through the equipment observation window, which is located on the side wall of the material cylinder 21. If local agglomeration is found, the rotation speed of the lower cone 22 can be appropriately increased.

[0053] After preheating is completed, valve 26 is closed to block the hot air flow. The regulating motor 55 is started in reverse to drive the baffle ring 51 to move upward along the guide rod 522, gradually opening the lower cavity of the lower cone 22. At this time, the lower cone 22 maintains horizontal rotation. The inclined structure of its inner wall and the circumferential thrust work together to push the preheated lithium ore towards the central lower cavity, avoiding material adhesion and blockage. The feeding speed is controlled by adjusting the rising height of the baffle ring 51 (e.g., rising 5-10cm). At the same time, the limiting effect of the guide rod 522 is used to ensure that the baffle ring 51 does not deviate.

[0054] When lithium ore enters the connecting pipe 23, it flows towards the 35° inclined conveying pipe 41 under the combined action of gravity and the rotating thrust of the lower cone 22. Because the conveying pipe 41 is inclined, the material can quickly slide into the roasting box 4, reducing the residence time in the connecting pipe 23 and reducing heat loss.

[0055] Next, after the material enters the roasting chamber 4, it is roasted at a high temperature of 600-800℃. The crystal structure of the clay mineral is destroyed, and the insoluble lithium compounds encapsulated within are transformed into a readily soluble form. At the same time, the residual leaching agent impurities are decomposed. The roasting time is set to 20-40 minutes. During this period, the temperature control system of the roasting chamber 4 monitors the temperature in real time to ensure that the lithium ore reacts fully.

[0056] Finally, when equipment maintenance and cleaning are required, disassemble the first flange plate 25, remove the filter screen plate at the output port of the preheating box 24, clean the lithium ore and impurities on the surface, replace the filter screen if necessary, and then check the wear of the first rotating guide ring 212 and the second rotating guide ring 231, add lubricant to ensure smooth rotation, and ensure the stability of the equipment in the next operation.

[0057] In the above scheme, it should be noted that: the feeding speed is controlled by adjusting the rising height of the baffle ring 51. This is achieved by utilizing the change in the area of ​​the annular channel formed between the baffle ring 51 and the lower cavity of the lower cone 22, combined with the horizontal rotation thrust of the lower cone 22, thereby controlling the flow rate of high-viscosity lithium ore. The roasting box 4 adopts the existing SRJX-8-13 box-type resistance furnace. Its working principle and the conventional temperature control system technology in this field will not be described in detail here.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A calcination system for leaching lithium from a salt lake sedimentary clay type lithium ore, comprising a rack (1), characterized in that: The rack (1) is provided with a preheating mechanism (2), a rotary driving mechanism (3) and a roasting box (4); The preheating mechanism (2) is used for preheating treatment of the salt lake sediment clay type lithium ore after leaching; The preheating mechanism (2) is composed of a cylinder (21), a lower conical cylinder (22), a communication pipe (23) and a preheating box (24), the lower end of the cylinder (21) is provided with a first rotating guide ring (212), and the upper cavity of the lower conical cylinder (22) is provided with a first guide ring cavity (221); The rotary driving mechanism (3) is used for driving the lower conical cylinder (22) in the preheating mechanism (2) to rotate; The rotary driving mechanism (3) comprises a gear ring (31) arranged on the periphery of the lower conical cylinder (22) and a driving motor (33), one side of the gear ring (31) is provided with a driving gear (32), and the driving gear (32) is connected with the output end of the driving motor (33); The roasting box (4) is used for high-temperature roasting treatment of the salt lake sediment clay type lithium ore preheated by the preheating mechanism (2).

2. The calcination system for leaching lithium from a salt lake sedimentary clay type lithium ore according to claim 1, characterized in that: The roasting box (4) is provided with a feeding pipe (41), the feeding pipe (41) is arranged at an inclination of 35°, one end of the feeding pipe (41) is communicated with the roasting box (4), and the other end of the feeding pipe (41) is connected with the communication pipe (23).

3. The calcination system for leaching lithium from a salt lake sedimentary clay type lithium ore according to claim 2, characterized in that: First flange connecting plates (25) and valves (26) are arranged between the preheating box (24) and the communication pipe (23), the communication pipe (23) is connected with the output port of the preheating box (24) through the first flange connecting plates (25), the valves (26) are arranged above the first flange connecting plates (25), one end of the feeding pipe (41) is provided with second flange connecting plates (42), and the feeding pipe (41) is connected with the communication pipe (23) through the second flange connecting plates (42).

4. The calcination system for leaching lithium from a salt lake sedimentary clay type lithium ore according to claim 1, characterized in that: The lower cavity of the lower conical cylinder (22) is also provided with a second guide ring cavity (222), the periphery of the end of the communication pipe (23) is provided with a second rotating guide ring (231), and the communication pipe (23) is arranged in the second guide ring cavity (222) in cooperation with the second rotating guide ring (231).

5. The calcination system for leaching lithium from a salt lake sedimentary clay type lithium ore according to claim 1, characterized in that: A group of support rods of the rack (1) are upwardly extended and connected with the cylinder (21), the other two groups of support rods of the rack (1) are fixedly connected with limiting rings (11), and the lower conical cylinder (22) is arranged in the limiting rings (11).

6. The calcination system for leaching lithium from a salt lake sedimentary clay type lithium ore according to claim 5, characterized in that: The side wall of the limiting ring (11) is connected with a motor mounting frame (34), and the driving motor (33) is arranged on one side of the limiting ring (11) in cooperation with the motor mounting frame (34).

7. The calcination system for leaching lithium from a salt lake sedimentary clay type lithium ore according to claim 5, characterized in that: The side wall of the cylinder (21) is provided with a feeding hopper (211), and the feeding hopper (211) is arranged at an inclination.

8. The calcination system for leaching lithium from a salt lake sedimentary clay type lithium ore according to claim 7, characterized in that: The cylinder (21) is also provided with a preheating discharging control mechanism (5), the preheating discharging control mechanism (5) comprises a material blocking ring (51), the material blocking ring (51) is provided with air holes (511), and the material blocking ring (51) is arranged directly above the lower cavity of the lower conical cylinder (22).

9. The calcination system for leaching lithium from a salt lake sedimentary clay type lithium ore according to claim 8, characterized in that: The preheating blanking regulation mechanism (5) further comprises an adjusting rod (52), a rotating shaft (54) and an adjusting motor (55), the adjusting rod (52) is provided with a structure tooth portion (521) on the end, the rotating shaft (54) is arranged on the top cover of the barrel (21) through two groups of support seats, the adjusting motor (55) is arranged on one of the support seats and is in transmission connection with the rotating shaft (54), the adjusting tooth (53) is fixedly arranged in the middle of the rotating shaft (54), and the adjusting tooth (53) is in mesh with the structure tooth portion (521).

10. The calcination system for leaching lithium from a salt lake sedimentary clay type lithium ore according to claim 9, characterized in that: The adjusting rod (52) is provided with a guide rod (522) extending on both sides, and the guide rods (522) on both sides penetrate through the top cover of the barrel (21).

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