A lithium sulfide calcining device and lithium sulfide production process

Abstract

The present invention discloses a lithium sulfide calcining device and a lithium sulfide production process, and relates to the technical field of lithium sulfide calcining. The lithium sulfide calcining device is provided with an outer cylinder, an inner cylinder and an adjusting frame on a high-temperature vacuum calcining device, a plurality of baffles are provided in the inner cylinder, and an auxiliary mechanism is provided in the inner cylinder for auxiliary heating and cooling of materials; the auxiliary mechanism includes a hollow arc cover inserted in the inner cylinder, and the arc cover is fixedly inserted at the end of the outer cylinder. The lithium sulfide calcining device and the lithium sulfide production process can improve the cooling efficiency by auxiliary heating and cooling of materials through the arc cover and a plurality of baffles; can have a certain crushing effect on the materials, and at the same time, can avoid the agglomeration of materials, and can avoid the accumulation of materials at the bottom, thereby improving the heating and cooling efficiency of materials; can flatten the materials on the baffles to improve the heating and cooling efficiency of materials.

Description

Technical Field

[0001] The invention relates to the technical field of lithium sulfide calcination, in particular to a lithium sulfide calcination device and a lithium sulfide production process. Background Art

[0002] Lithium-sulfur battery is a promising secondary battery with more inherent advantages than lithium-ion battery. Lithium sulfide is a common electrolyte material for lithium-sulfur batteries. Its production mainly includes steps such as ingredient mixing, calcination and crushing. During calcination, a high-temperature vacuum calcination device is usually used. The high-temperature vacuum calcination device mainly includes an outer cylinder and an inner cylinder. During calcination, the inner cylinder rotates, and a plurality of baffles are provided on the side wall of the inner cylinder to facilitate turning over the material. In addition, during the production process, the material needs to be heated and calcined. After calcination, it needs to be cooled and taken out.

[0003] However, when the existing high-temperature vacuum calcining device is in use, the material is easily accumulated at the bottom of the inner cylinder, affecting the heating and cooling efficiency. At the same time, when the material is heated and cooled, the heating and cooling of the material need to be achieved through the outer cylinder, which will also lead to low heating and cooling efficiency, and easily cause heat waste, which is not energy-saving and environmentally friendly. Summary of the invention

[0004] The purpose of the present invention is to provide a lithium sulfide calcining device and a lithium sulfide production process to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a lithium sulfide calcining device, comprising an outer cylinder, an inner cylinder and an adjusting frame arranged on a high-temperature vacuum calcining device, a plurality of baffles are arranged in the inner cylinder, and an auxiliary mechanism is arranged in the inner cylinder for auxiliary heating and cooling of the material;

[0006] The auxiliary mechanism includes a hollow arc cover inserted in the inner cylinder, and the arc cover is fixedly inserted at the end of the outer cylinder, a first arc plate is connected to the arc cover through a first moving mechanism, and a hot water tank and a cooling water tank are fixedly connected to the side wall of the adjusting frame, a first solenoid valve is fixedly connected to the top of the hot water tank, and the first solenoid valve and one end of the arc cover are fixedly connected to the first hot water pipe, a second solenoid valve is fixedly connected to the top of the cooling water tank, and the second solenoid valve and the other end of the arc cover are fixedly connected to the first cooling water pipe, an annular groove is provided at the end of the outer cylinder, and an annular cover is rotatably connected in the annular groove, a first circular ring is fixedly connected to the side wall of the baffle, and two symmetrically arranged second circular rings are fixedly connected to the side wall of the first circular ring, the second circular ring is inserted in the annular cover and rotatably connected to the side wall thereof, and a first annular cavity and a second annular cavity are formed between the two second circular rings and the annular cover. Two annular cavities, a rectangular cavity is opened in the baffle, one side of the rectangular cavity extends to the side wall of the first circular ring, and the first movable plate is connected to the rectangular cavity through the second movable mechanism, two first through holes are opened on the side wall of the first circular ring, and the two first through holes are connected to the rectangular cavity and the first annular cavity and the second annular cavity respectively, a third solenoid valve is fixedly connected to the top of the hot water tank, and a second hot water pipe is fixedly connected between the third solenoid valve and the first annular cavity, a fourth solenoid valve is fixedly connected to the top of the cooling water tank, and a second cooling water pipe is fixedly connected between the fourth solenoid valve and the second annular cavity, a second arc plate is fixedly connected to the side wall of the arc cover, and a second through hole is opened on the top of the second arc plate, a vertical plate is fixedly connected to the bottom of the second arc plate, and an inclined plate is fixedly connected to the side wall of the vertical plate, and a paving mechanism for paving the material on the baffle is arranged in the inner cylinder.

[0007] Preferably, the paving mechanism includes a moving module fixedly connected to the side wall of the arc-shaped cover, and the moving module is connected to a first moving block, the side wall of the first moving block is fixedly connected to a second moving plate, and the other end of the second moving plate passes through the inner cylinder and is connected to a plurality of scrapers arranged in an array through a telescopic mechanism, and the scraper includes two symmetrically arranged first inclined surfaces.

[0008] Preferably, the first moving mechanism includes two symmetrically arranged mounting frames fixedly connected to the two ends of the arc-shaped cover, and the bottom of each mounting frame is rotatably connected to two symmetrically arranged guide wheels through a rotating shaft, and a pull rope is slidably connected to the guide wheel, and the two ends of the pull rope pass through the arc-shaped cover and are fixed to the two ends of the first arc plate, and the top of one of the mounting frames is fixedly connected to a motor, and the output end of the motor is fixedly connected to two symmetrically arranged rollers.

[0009] Preferably, the second moving mechanism includes two symmetrically arranged first guide rods fixedly connected in the rectangular cavity, and the first moving plate is sleeved on the side walls of the first guide rods, the side wall of the first circular ring is provided with a plurality of strip openings arranged in an array, and a sliding block is slidably connected in each strip opening, the sliding block is fixed to the side wall of the first moving plate, and a telescopic cover is fixedly connected between the sliding block and the strip opening, the sliding block is connected to the side wall of the second circular ring through a first reset mechanism, and the movement of the sliding block is driven by the first pushing mechanism.

[0010] Preferably, the first reset mechanism comprises two symmetrically arranged second guide rods inserted in the side walls of each sliding block, the two ends of the second guide rods are respectively fixed to the side walls of the two second rings, and the side wall of each second guide rod is sleeved with a first spring;

[0011] The first pushing mechanism comprises a moving ring slidably connected in the annular cover, and the end of the moving ring is provided with a conical surface, the moving ring is connected to the side wall of the annular cover through the second reset mechanism, and the movement of the moving ring is driven by the second pushing mechanism;

[0012] The second reset mechanism includes two symmetrically arranged moving rods inserted in the side wall of the annular cover, and one end of the moving rod is fixed to the end of the moving ring, and the other end of the moving rod is fixedly connected to the second moving block, and the side wall of each moving rod is sleeved with a second spring, and the movement of the second moving block is driven by the third driving mechanism;

[0013] The third pushing mechanism comprises an L-shaped block inserted at the end of the arc-shaped cover, and a connecting frame is fixedly connected between the L-shaped block and the second moving block;

[0014] The telescopic mechanism includes a connecting plate fixedly connected to the side wall of the second movable plate, and the side wall of the connecting plate is fixedly connected to an L-shaped plate, a rectangular rod is inserted into the side wall of the L-shaped plate, and one end of the rectangular rod is fixed to the side wall of the scraper, and the other end of the rectangular rod is fixedly connected to a disc, and the side wall of the rectangular rod is sleeved with a third spring, and the movement of the disc is pushed by a third pushing mechanism;

[0015] The third pushing mechanism includes two symmetrically arranged T-shaped guide rods inserted in the side wall of the first moving block, and one end of the T-shaped guide rod is fixedly connected to the third moving block, the side wall of each of the T-shaped guide rods is sleeved with a fourth spring, and the side wall of the first moving block is fixedly connected to an electromagnet, the side wall of the third moving block is fixedly connected to an iron block, and the side wall of the third moving block is fixedly connected to a third moving plate, the third moving plate passes through the inner cylinder and is fixedly connected to a plurality of pushing blocks arranged in an array, the pushing block includes a second inclined surface, and the end of each disc is fixedly connected to a pushing pin.

[0016] Preferably, a lithium sulfide production process, using a lithium sulfide calcining device as described above, comprises the following steps:

[0017] S1: First batching and mixing: lithium blocks and sulfur blocks are batched and mixed using a mixing device;

[0018] S2: First calcination: The mixed materials are put into a high-temperature vacuum calcination device, and the auxiliary mechanism in the high-temperature vacuum calcination device assists in heating to quickly heat the materials for the first calcination;

[0019] S3: First crushing treatment: After the first calcination is completed, the auxiliary mechanism in the high-temperature vacuum calcination device assists in cooling and cooling the material so that the material is cooled quickly. Then the material after the first calcination is taken out and the first crushing treatment is performed;

[0020] S4: Secondary batching: adding lithium blocks and sulfur blocks to the crushed materials for secondary batching and mixing;

[0021] S5: Secondary calcination: the mixed materials are put into a high-temperature vacuum calcination device, and the auxiliary mechanism in the high-temperature vacuum calcination device assists in heating to rapidly heat the materials for secondary calcination;

[0022] S6: Secondary pulverization: After the secondary calcination is completed, the auxiliary mechanism in the high-temperature vacuum calcination device assists in cooling and cooling the material so that the material is cooled quickly. After that, the secondary calcined material is taken out and subjected to secondary pulverization;

[0023] S7: Quality inspection and packaging: Quality inspection and packaging of materials after secondary crushing.

[0024] Preferably, in step S1, the mixing device used is a glove box.

[0025] Preferably, in step S2, the calcination temperature is set to 150°C and maintained at a constant temperature for 1 hour.

[0026] Preferably, in step S2, after maintaining a constant temperature of 150°C for 1 hour, the temperature is raised to 310°C of the second stage and maintained at a constant temperature for 3 hours.

[0027] Preferably, in step S5, the calcination temperature is set to 550°C and maintained at a constant temperature for 2.5 hours.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The lithium sulfide calcining device and lithium sulfide production process are provided with an arc cover, etc., so that when heating is performed, the baffle rotates synchronously with the inner cylinder, and the material is driven to rotate synchronously by the baffle, so that the material can move along the top of the arc cover. When it moves to the top of the second arc plate, small particles of material can fall through the second through hole and slide downward along the vertical plate and the inclined plate, while large pieces of material can fall downward along the second arc plate, which can have a certain crushing effect on the material. At the same time, it can avoid material agglomeration and avoid material accumulation at the bottom, thereby improving the efficiency of material heating and cooling.

[0030] The lithium sulfide calcining device and lithium sulfide production process are provided with auxiliary mechanisms, etc. After cooling is completed, when the material needs to be heated, the motor is started, and the rotation of the motor drives the rotation of the roller, thereby driving the pull rope for transportation. At this time, the first arc plate can be pulled to move along the inner wall of the arc cover in the direction away from the L-shaped block, and at the same time, the first solenoid valve and the second solenoid valve are opened. At this time, the hot water in the hot water tank can enter the arc cover through the first hot water pipe, and the cooling water after absorbing heat in the arc cover can enter the cooling water tank through the first cooling water pipe for cooling, and can pass through the heat exchanger before entering the cooling water tank to avoid heat waste, which can avoid heat waste and is more energy-saving and environmentally friendly. Then, the first electric The magnetic valve and the second solenoid valve are closed. At this time, when the inner cylinder rotates, it can drive the baffle to rotate synchronously, and drive the material through rotation, so that the material can roll along the top of the arc cover, so that the material can be preheated and the heating efficiency can be improved. When the material needs to be cooled, similarly, the first solenoid valve and the second solenoid valve are opened, and the first arc plate is moved along the inner wall of the arc cover toward the direction close to the L-shaped block. At this time, the cooling water in the cooling water tank can enter the arc cover through the first cooling water pipe, and the hot water in the arc cover can enter the hot water tank through the first hot water pipe for temporary storage. The arc cover is used to assist in heating and cooling the material, thereby improving the cooling efficiency.

[0031] This lithium sulfide calcining device and lithium sulfide production process, by setting a second moving mechanism, etc., during heating, when the first arc plate moves in the direction away from the L-shaped block, the moving ring can be against the side wall of the sliding block under the action of the second spring, thereby pushing the first moving plate to move downward along the first guide rod. At the same time, the third solenoid valve and the fourth solenoid valve are opened. At this time, the hot water in the hot water tank can enter the first annular cavity through the second hot water pipe and enter the rectangular cavity through the first through hole. At the same time, the cooling water after absorbing heat in the rectangular cavity can pass through another first through hole and the second annular cavity and then enter the cooling water tank through the second cooling water pipe, and can pass through the heat exchanger before entering the cooling water tank to avoid heat waste. The material can rotate synchronously with the baffle, and the baffle is used to assist in heating and cooling the material, thereby making the heating efficiency of the material higher. Similarly, the material can be cooled, which can improve the cooling efficiency of the material.

[0032] The lithium sulfide calcining device and lithium sulfide production process are provided with a scraping mechanism, etc., so that when heating or cooling is performed, the first moving block and the second moving plate are driven to reciprocate through the moving module. When the second moving plate moves in a direction away from the moving module, the scraper can be driven to move through the connecting plate, the L-shaped plate, the rectangular rod and the third spring, so that the material on the baffle can be flattened to ensure the efficiency of heating and cooling. When the second moving plate moves to reset in a direction close to the moving module, the electromagnet is energized, and at this time, the iron block is attracted, so that the third moving block and the third moving plate move in a direction close to the first moving block. At the same time, the fourth spring is compressed, and when the third moving plate moves, it can be synchronously moved through the pushing block and abut against the second inclined surface and the pushing pin, so that the disc can be pushed to move, and the scraper is driven to move in a direction close to the L-shaped plate through the rectangular rod. At the same time, the third spring is compressed, and at this time, the material is not scraped to ensure its normal scraping effect, and the first inclined surface and the third spring are provided to ensure that the baffle can pass over the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the high-temperature vacuum calcining device of the present invention.

[0034] Figure 2 This is a schematic diagram of the overall structure of the high-temperature vacuum calcining device of the present invention from another perspective.

[0035] Figure 3 It is a schematic diagram of the internal structure of the inner cylinder in the present invention.

[0036] Figure 4 It is a partial cross-sectional structural schematic diagram of the high-temperature vacuum calcining device of the present invention.

[0037] Figure 5It is a partial cross-sectional structural schematic diagram of the high-temperature vacuum calcining device of the present invention from another perspective.

[0038] Figure 6 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0039] Figure 7 for Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0040] Figure 8 for Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0041] Fig. 9 for Figure 5 Schematic diagram of the enlarged structure at D in the middle.

[0042] Fig.10 for Figure 5 Schematic diagram of the enlarged structure at E in the middle.

[0043] Fig.11 for Figure 7 Schematic diagram of the enlarged structure at F in the middle.

[0044] Fig.12 for Fig.11 Schematic diagram of the enlarged structure at G in the middle.

[0045] Fig.13 for Figure 8 Schematic diagram of the enlarged structure at H in the middle.

[0046] In the figure: 101, outer cylinder; 102, inner cylinder; 103, baffle; 104, adjustment frame; 201, mounting frame; 202, rotating shaft; 203, guide wheel; 204, pull rope; 205, roller; 206, motor; 301, strip opening; 302, sliding block; 303, telescopic cover; 401, second guide rod; 402, first spring; 501, moving ring; 502, conical surface; 601, moving rod; 602, second spring; 603, second moving block; 701, L-shaped block; 702, connecting frame; 801, moving module; 802, first moving block; 803, second moving plate; 804, scraper; 805, first inclined plane; 901, connecting plate; 902, L-shaped plate; 903, rectangular rod; 904, third spring; 905, disc; 1001, T-shaped guide rod; 1002, third moving block; 1003, third moving plate; 1004, fourth spring; 10 05, electromagnet; 1006, iron block; 1007, push pin; 1008, push block; 1009, second inclined surface; 1101, arc cover; 1102, first arc plate; 1103, hot water tank; 1104, cooling water tank; 1105, first electromagnetic valve; 1106, first hot water pipe; 1107, second electromagnetic valve; 1108, first cooling water pipe; 1109, rectangular cavity; 1110, first guide rod; 1111, first shift Moving plate; 1112, annular groove; 1113, annular cover; 1114, first annular cavity; 1115, second annular cavity; 1116, first through hole; 1117, second hot water pipe; 1118, fourth solenoid valve; 1119, second cooling water pipe; 1120, second arc plate; 1121, second through hole; 1122, vertical plate; 1123, inclined plate; 1124, first circular ring; 1125, second circular ring; 1126, third solenoid valve. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] See also Figure 1-Figure 13 The present invention provides a technical solution: a lithium sulfide calcining device, comprising an outer cylinder 101, an inner cylinder 102 and an adjusting frame 104 arranged on a high-temperature vacuum calcining device, a plurality of baffles 103 are arranged in the inner cylinder 102, and an auxiliary mechanism is arranged in the inner cylinder 102 for auxiliary heating and cooling of materials;

[0049] The auxiliary mechanism includes a hollow arc cover 1101 inserted in the inner cylinder 102, and the arc cover 1101 is fixedly inserted at the end of the outer cylinder 101, the arc cover 1101 is connected with a first arc plate 1102 through a first moving mechanism, and the side wall of the adjustment frame 104 is fixedly connected with a hot water tank 1103 and a cooling water tank 1104, the top of the hot water tank 1103 is fixedly connected with a first solenoid valve 1105, and the first solenoid valve 1105 and one end of the arc cover 1101 are fixedly connected with a first hot water pipe 1106, the top of the cooling water tank 1104 is fixedly connected with a second solenoid valve 1107, and the second solenoid valve 1107 and the other end of the arc cover 1101 are fixedly connected with a first cooling water pipe 1106. The outer tube 1108 is provided with an annular groove 1112 at the end of the outer tube 101, and an annular cover 1113 is rotatably connected in the annular groove 1112, a first ring 1124 is fixedly connected to the side wall of the baffle 103, and two symmetrically arranged second rings 1125 are fixedly connected to the side wall of the first ring 1124, the second ring 1125 is inserted in the annular cover 1113 and rotatably connected to the side wall thereof, and a first annular cavity 1114 and a second annular cavity 1115 are formed between the two second rings 1125 and the annular cover 1113, a rectangular cavity 1109 is provided in the baffle 103, one side of the rectangular cavity 1109 extends to the side wall of the first ring 1124, and the rectangular cavity 1109 is connected to the side wall of the first ring 1124 by a second moving mechanism. A first movable plate 1111 is connected, two first through holes 1116 are provided on the side wall of the first circular ring 1124, and the two first through holes 1116 are connected to the rectangular cavity 1109 and the first annular cavity 1114 and the second annular cavity 1115 respectively, a third solenoid valve 1126 is fixedly connected to the top of the hot water tank 1103, and a second hot water pipe 1117 is fixedly connected between the third solenoid valve 1126 and the first annular cavity 1114, a fourth solenoid valve 1118 is fixedly connected to the top of the cooling water tank 1104, and a second cooling water pipe 1119 is fixedly connected between the fourth solenoid valve 1118 and the second annular cavity 1115, a second arc plate 1120 is fixedly connected to the side wall of the arc cover 1101, and A second through hole 1121 is provided on the top of the second arc plate 1120, a vertical plate 1122 is fixedly connected to the bottom of the second arc plate 1120, and an inclined plate 1123 is fixedly connected to the side wall of the vertical plate 1122. A paving mechanism for paving the material on the baffle 103 is provided in the inner cylinder 102. The material is assisted in heating and cooling by the arc cover 1101 and multiple baffles 103, which can improve the cooling efficiency; it can have a certain crushing effect on the material, and at the same time, it can avoid the material from agglomerating, and it can avoid the material from accumulating at the bottom, thereby improving the heating and cooling efficiency of the material; the material on the baffle 103 can be spread to improve the heating and cooling efficiency of the material.

[0050] The paving mechanism includes a moving module 801 fixedly connected to the side wall of the arc-shaped cover 1101, and a first moving block 802 is connected to the moving module 801, and a second moving plate 803 is fixedly connected to the side wall of the first moving block 802, and the other end of the second moving plate 803 passes through the inner cylinder 102 and is connected to a plurality of scrapers 804 arranged in an array through a telescopic mechanism, and the scraper 804 includes two symmetrically arranged first inclined surfaces 805. When heating or cooling is performed, the first moving block 802 and the second moving plate 803 are driven to reciprocate through the moving module 801. When the second moving plate 803 moves in a direction away from the moving module 801, the scraper 804 can be driven to move through the telescopic mechanism, so that the material on the baffle 103 can be spread out to ensure the efficiency of heating and cooling.

[0051] The first moving mechanism includes two symmetrically arranged mounting frames 201 fixedly connected at both ends of the arc cover 1101, and the bottom of each mounting frame 201 is rotatably connected to two symmetrically arranged guide wheels 203 through a rotating shaft 202, and a pull rope 204 is slidably connected to the guide wheel 203, and both ends of the pull rope 204 pass through the arc cover 1101 and are fixed to both ends of the first arc plate 1102, and a motor 206 is fixedly connected to the top of one of the mounting frames 201, and the output end of the motor 206 is fixedly connected to two symmetrically arranged rollers 205, and the motor 206 is started, and the rotation of the motor 206 drives the rotation of the roller 205, thereby driving the pull rope 204 for transportation. At this time, the first arc plate 1102 can be pulled to move along the inner wall of the arc cover 1101 in a direction away from the L-shaped block 701, and when the motor 206 is reversed, the first arc plate 1102 can be pulled to move in the opposite direction by the pull rope 204.

[0052] The second moving mechanism includes two symmetrically arranged first guide rods 1110 fixedly connected in the rectangular cavity 1109, and the first moving plate 1111 is sleeved on the side wall of the first guide rod 1110, the side wall of the first ring 1124 is provided with a plurality of strip openings 301 arranged in an array, and a sliding block 302 is slidably connected in each strip opening 301, the sliding block 302 is fixed to the side wall of the first moving plate 1111, and a telescopic cover 303 is fixedly connected between the sliding block 302 and the strip opening 301, the sliding block 302 is connected to the side wall of the second ring 1125 through the first reset mechanism, and the movement of the sliding block 302 is pushed by the first pushing mechanism, and the sliding block 302 is pushed to move by the first pushing mechanism, thereby pushing the first moving plate 1111 to slide along the first guide rod 1110.

[0053] The first reset mechanism includes two symmetrically arranged second guide rods 401 inserted into the side walls of each sliding block 302, the two ends of the second guide rods 401 are respectively fixed to the side walls of the two second rings 1125, and the side walls of each second guide rod 401 are sleeved with a first spring 402, which guides and resets the movement of the sliding block 302;

[0054] The first pushing mechanism includes a moving ring 501 slidably connected in the annular cover 1113, and a conical surface 502 is provided at the end of the moving ring 501. The moving ring 501 is connected to the side wall of the annular cover 1113 through a second reset mechanism, and the movement of the moving ring 501 is pushed by the second pushing mechanism. The second pushing mechanism pushes the moving ring 501 to move and abuts against the side wall of the sliding block 302, so that the first moving plate 1111 can be pushed to move downward along the first guide rod 1110;

[0055] The second reset mechanism includes two symmetrically arranged moving rods 601 inserted into the side wall of the annular cover 1113, and one end of the moving rod 601 is fixed to the end of the moving ring 501, and the other end of the moving rod 601 is fixedly connected to the second moving block 603, and the side wall of each moving rod 601 is sleeved with a second spring 602, and the movement of the second moving block 603 is pushed by the third pushing mechanism, which plays a guiding and resetting role for the movement of the moving ring 501;

[0056] The third pushing mechanism includes an L-shaped block 701 inserted at the end of the arc cover 1101, and a connecting frame 702 is fixedly connected between the L-shaped block 701 and the second moving block 603. When the first arc plate 1102 and the L-shaped block 701 are against each other, the moving ring 501 can be pushed to move. At the same time, the second spring 602 is compressed. When the first arc plate 1102 is separated from the L-shaped block 701, the moving ring 501 can be moved and reset under the action of the second spring 602;

[0057] The telescopic mechanism includes a connecting plate 901 fixedly connected to the side wall of the second movable plate 803, and the side wall of the connecting plate 901 is fixedly connected to an L-shaped plate 902, a rectangular rod 903 is inserted into the side wall of the L-shaped plate 902, and one end of the rectangular rod 903 is fixed to the side wall of the scraper 804, and the other end of the rectangular rod 903 is fixedly connected to a disc 905, and the side wall of the rectangular rod 903 is sleeved with a third spring 904, and the movement of the disc 905 is driven by the third pushing mechanism. When the second movable plate 803 moves and resets in a direction close to the movable module 801, the scraper 804 is pushed to move in a direction close to the L-shaped plate 902 by the third pushing mechanism, and at the same time, the third spring 904 is compressed. At this time, the material is not scraped, ensuring its normal scraping effect;

[0058] The third pushing mechanism includes two symmetrically arranged T-shaped guide rods 1001 inserted into the side wall of the first moving block 802, and one end of the T-shaped guide rod 1001 is fixedly connected to the third moving block 1002, and the side wall of each T-shaped guide rod 1001 is sleeved with a fourth spring 1004, and the side wall of the first moving block 802 is fixedly connected to an electromagnet 1005, the side wall of the third moving block 1002 is fixedly connected to an iron block 1006, and the side wall of the third moving block 1002 is fixedly connected to a third moving plate 1003, the third moving plate 1003 penetrates into the inner cylinder 102 and is fixedly connected to a plurality of pushing blocks 1008 arranged in an array, and the pushing block 1008 includes The second inclined surface 1009, and the end of each disk 905 is fixedly connected with a pushing pin 1007, and the electromagnet 1005 is energized. At this time, the iron block 1006 is attracted, so that the third moving block 1002 and the third moving plate 1003 move toward the direction close to the first moving block 802. At the same time, the fourth spring 1004 is compressed, and when the third moving plate 1003 moves, it can move synchronously through the pushing block 1008, and resist the second inclined surface 1009 and the pushing pin 1007, so as to push the disk 905 to move, and drive the scraper 804 to move toward the direction close to the L-shaped plate 902 through the rectangular rod 903.

[0059] A lithium sulfide production process, using a lithium sulfide calcining device as described above, comprises the following steps:

[0060] S1: First batching and mixing: lithium blocks and sulfur blocks are batched and mixed using a mixing device;

[0061] S2: First calcination: The mixed materials are put into a high-temperature vacuum calcination device, and the auxiliary mechanism in the high-temperature vacuum calcination device assists in heating to quickly heat the materials for the first calcination;

[0062] S3: First crushing treatment: After the first calcination is completed, the auxiliary mechanism in the high-temperature vacuum calcination device assists in cooling and cooling the material so that the material is cooled quickly. Then the material after the first calcination is taken out and the first crushing treatment is performed;

[0063] S4: Secondary batching: adding lithium blocks and sulfur blocks to the crushed materials for secondary batching and mixing;

[0064] S5: Secondary calcination: the mixed materials are put into a high-temperature vacuum calcination device, and the auxiliary mechanism in the high-temperature vacuum calcination device assists in heating to rapidly heat the materials for secondary calcination;

[0065] S6: Secondary pulverization: After the secondary calcination is completed, the auxiliary mechanism in the high-temperature vacuum calcination device assists in cooling and cooling the material so that the material is cooled quickly. After that, the secondary calcined material is taken out and subjected to secondary pulverization;

[0066] S7: Quality inspection and packaging: Quality inspection and packaging of materials after secondary crushing.

[0067] In step S1 , the mixing device used is a glove box.

[0068] In step S2, the calcination temperature is set to 150°C and kept constant for 1 hour.

[0069] In step S2, after maintaining a constant temperature of 150°C for 1 hour, the temperature is raised to 310°C of the second stage and maintained at a constant temperature for 3 hours.

[0070] In step S5, the calcination temperature is set to 550°C and maintained at a constant temperature for 2.5 hours.

[0071] Working principle: When in use, during heating, the baffle 103 rotates synchronously with the inner cylinder 102, and drives the material to rotate synchronously through the baffle 103, so that the material can move along the top of the arc cover 1101. When it moves to the top of the second arc plate 1120, small particles of material can fall through the second through hole 1121 and slide downward along the vertical plate 1122 and the inclined plate 1123, while large pieces of material can fall downward along the second arc plate 1120, which can have a certain crushing effect on the material. At the same time, it can avoid material agglomeration and avoid material accumulation at the bottom, thereby improving the efficiency of material heating and cooling;

[0072] After the cooling is completed, when the material needs to be heated, the motor 206 is started, and the rotation of the motor 206 drives the rotation of the roller 205, thereby driving the pull rope 204 for transportation. At this time, the first arc plate 1102 can be pulled to move along the inner wall of the arc cover 1101 in the direction away from the L-shaped block 701. At the same time, the first solenoid valve 1105 and the second solenoid valve 1107 are opened. At this time, the hot water in the hot water tank 1103 can enter the arc cover 1101 through the first hot water pipe 1106, and the cooling water after absorbing heat in the arc cover 1101 can enter the cooling water tank 1104 through the first cooling water pipe 1108 for cooling, and can pass through the heat exchanger before entering the cooling water tank 1104 to avoid heat waste, which can avoid heat waste and is more energy-saving and environmentally friendly.

[0073] Next, the first solenoid valve 1105 and the second solenoid valve 1107 are closed. At this time, when the inner cylinder 102 rotates, the baffle 103 can be driven to rotate synchronously, and the material can be driven to rotate, so that the material can roll along the top of the arc cover 1101, so that the material can be preheated and the heating efficiency can be improved. When the material needs to be cooled, similarly, the first solenoid valve 1105 and the second solenoid valve 1107 are opened, and the first arc plate 1102 is moved along the inner wall of the arc cover 1101 toward the direction close to the L-shaped block 701. At this time, the cooling water in the cooling water tank 1104 can enter the arc cover 1101 through the first cooling water pipe 1108, and the hot water in the arc cover 1101 can enter the hot water tank 1103 through the first hot water pipe 1106 for temporary storage, and the arc cover 1101 is used to perform auxiliary heating and cooling on the material, so as to improve the cooling efficiency.

[0074] During heating, when the first arc-shaped plate 1102 moves away from the L-shaped block 701, the movable ring 501 can abut against the side wall of the sliding block 302 under the action of the second spring 602, so as to push the first movable plate 1111 to move downward along the first guide rod 1110. At the same time, the third solenoid valve 1126 and the fourth solenoid valve 1118 are opened. At this time, the hot water in the hot water tank 1103 can enter the first annular cavity 1114 through the second hot water pipe 1117 and enter the rectangular cavity 1114 through the first through hole 1116. 09, at the same time, the cooling water after absorbing heat in the rectangular cavity 1109 can pass through another first through hole 1116 and the second annular cavity 1115 and then enter the cooling water tank 1104 through the second cooling water pipe 1119, and can pass through the heat exchanger before entering the cooling water tank 1104 to avoid heat waste. The material can rotate synchronously with the baffle 103, and the baffle 103 is used to assist in heating and cooling the material, so that the heating efficiency of the material is higher. Similarly, the material can be cooled down to improve the cooling efficiency of the material.

[0075] When heating or cooling is performed, the first moving block 802 and the second moving plate 803 are driven to reciprocate by the moving module 801. When the second moving plate 803 moves in a direction away from the moving module 801, the scraper 804 can be driven to move by the connecting plate 901, the L-shaped plate 902, the rectangular rod 903 and the third spring 904, so that the material on the baffle 103 can be flattened to ensure the efficiency of heating and cooling. When the second moving plate 803 moves to a direction close to the moving module 801 and resets, the electromagnet 1005 is energized, and at this time, the iron block 1006 is attracted, so that the third moving block 1002 and the third moving plate 803 are moved back and forth. The plate 1003 moves toward the direction close to the first moving block 802, and at the same time, the fourth spring 1004 is compressed. Moreover, when the third moving plate 1003 moves, it can be synchronously moved by the push block 1008, and abut against the second inclined surface 1009 and the push pin 1007, so as to push the disc 905 to move, and drive the scraper 804 to move toward the direction close to the L-shaped plate 902 through the rectangular rod 903. At the same time, the third spring 904 is compressed. At this time, the material is not scraped, and its normal scraping effect is ensured. Moreover, by setting the first inclined surface 805 and the third spring 904, it is ensured that the baffle 103 can pass over the scraper 804;

[0076] When discharging is required, the inner cylinder 102 and the outer cylinder 101 are adjusted to a downward tilted state by adjusting the frame 104, and at the same time, the door cover of the inner cylinder 102 is opened, and the inner cylinder 102 is rotated to realize the discharging operation.

Claims

1. A lithium sulfide calcining device, comprising an outer cylinder (101), an inner cylinder (102) and an adjusting frame (104) arranged on a high-temperature vacuum calcining device, wherein a plurality of baffles (103) are arranged in the inner cylinder (102), characterized in that: An auxiliary mechanism is provided in the inner cylinder (102) for auxiliary heating and cooling of the material; The auxiliary mechanism comprises a hollow arc cover (1101) inserted into the inner cylinder (102), and the arc cover (1101) is fixedly inserted at the end of the outer cylinder (101); a first arc plate (1102) is connected to the arc cover (1101) via a first moving mechanism; a hot water tank (1103) and a cooling water tank (1104) are fixedly connected to the side wall of the adjustment frame (104); a first solenoid valve (1105) is fixedly connected to the top of the hot water tank (1103); and the first solenoid valve (1105) and one end of the arc cover (1101) are fixedly connected to a first hot water pipe (1106); and a second solenoid valve (1107) is fixedly connected to the top of the cooling water tank (1104). , and the second solenoid valve (1107) and the other end of the arc-shaped cover (1101) are fixedly connected to a first cooling water pipe (1108), an annular groove (1112) is provided at the end of the outer cylinder (101), and an annular cover (1113) is rotatably connected in the annular groove (1112), a first circular ring (1124) is fixedly connected to the side wall of the baffle (103), and two symmetrically arranged second circular rings (1125) are fixedly connected to the side wall of the first circular ring (1124), the second circular ring (1125) is inserted in the annular cover (1113) and rotatably connected to the side wall thereof, and a first annular cavity (1114) and a second annular cavity are formed between the two second circular rings (1125) and the annular cover (1113). (1115), a rectangular cavity (1109) is provided in the baffle (103), one side of the rectangular cavity (1109) extends to the side wall of the first circular ring (1124), and a first movable plate (1111) is connected to the rectangular cavity (1109) via a second movable mechanism, two first through holes (1116) are provided on the side wall of the first circular ring (1124), and the two first through holes (1116) are connected to the rectangular cavity (1109) and the first annular cavity (1114) and the second annular cavity (1115) respectively, a third solenoid valve (1126) is fixedly connected to the top of the hot water tank (1103), and a third solenoid valve (1126) is fixedly connected to the first annular cavity (1114). A second hot water pipe (1117); a fourth solenoid valve (1118) is fixedly connected to the top of the cooling water tank (1104); and a second cooling water pipe (1119) is fixedly connected between the fourth solenoid valve (1118) and the second annular cavity (1115); a second arc plate (1120) is fixedly connected to the side wall of the arc cover (1101); and a second through hole (1121) is provided on the top of the second arc plate (1120); a vertical plate (1122) is fixedly connected to the bottom of the second arc plate (1120); and an inclined plate (1123) is fixedly connected to the side wall of the vertical plate (1122); and a paving mechanism for paving the material on the baffle (103) is provided in the inner cylinder (102).

2. A lithium sulfide calcining device according to claim 1, characterized in that: The paving mechanism comprises a moving module (801) fixedly connected to the side wall of the arc-shaped cover (1101), and the moving module (801) is connected to a first moving block (802), the side wall of the first moving block (802) is fixedly connected to a second moving plate (803), and the other end of the second moving plate (803) passes through the inner cylinder (102) and is connected to a plurality of scrapers (804) arranged in an array through a telescopic mechanism, and the scrapers (804) include two symmetrically arranged first inclined surfaces (805).

3. A lithium sulfide calcining device according to claim 1, characterized in that: The first moving mechanism comprises two symmetrically arranged mounting frames (201) fixedly connected to the two ends of the arc-shaped cover (1101), and the bottom of each mounting frame (201) is rotatably connected to two symmetrically arranged guide wheels (203) via a rotating shaft (202), a pull rope (204) is slidably connected to the guide wheel (203), and the two ends of the pull rope (204) pass through the arc-shaped cover (1101) and are fixed to the two ends of the first arc-shaped plate (1102), and the top of one of the mounting frames (201) is fixedly connected to a motor (206), and the output end of the motor (206) is fixedly connected to two symmetrically arranged rollers (205).

4. A lithium sulfide calcining device according to claim 2, characterized in that: The second moving mechanism comprises two symmetrically arranged first guide rods (1110) fixedly connected in the rectangular cavity (1109), and the first moving plate (1111) is sleeved on the side wall of the first guide rod (1110), the side wall of the first circular ring (1124) is provided with a plurality of strip openings (301) arranged in an array, and a sliding block (302) is slidably connected in each strip opening (301), the sliding block (302) is fixed to the side wall of the first moving plate (1111), and a telescopic cover (303) is fixedly connected between the sliding block (302) and the strip opening (301), the sliding block (302) is connected to the side wall of the second circular ring (1125) via a first reset mechanism, and the movement of the sliding block (302) is driven by a first driving mechanism.

5. A lithium sulfide calcining device according to claim 4, characterized in that: The first reset mechanism comprises two symmetrically arranged second guide rods (401) inserted into the side walls of each sliding block (302), the two ends of the second guide rods (401) are respectively fixed to the side walls of two second rings (1125), and the side wall of each second guide rod (401) is sleeved with a first spring (402); The first pushing mechanism comprises a moving ring (501) slidably connected in the annular cover (1113), and a conical surface (502) is provided at the end of the moving ring (501); the moving ring (501) is connected to the side wall of the annular cover (1113) via a second reset mechanism, and the movement of the moving ring (501) is driven by the second pushing mechanism; The second reset mechanism comprises two symmetrically arranged moving rods (601) inserted into the side wall of the annular cover (1113), one end of the moving rod (601) is fixed to the end of the moving ring (501), the other end of the moving rod (601) is fixedly connected to a second moving block (603), and the side wall of each moving rod (601) is sleeved with a second spring (602), and the movement of the second moving block (603) is driven by a third driving mechanism; The third pushing mechanism comprises an L-shaped block (701) inserted into the end of the arc-shaped cover (1101), and a connecting frame (702) is fixedly connected between the L-shaped block (701) and the second moving block (603); The telescopic mechanism comprises a connecting plate (901) fixedly connected to the side wall of the second movable plate (803), and the side wall of the connecting plate (901) is fixedly connected to an L-shaped plate (902), a rectangular rod (903) is inserted into the side wall of the L-shaped plate (902), and one end of the rectangular rod (903) is fixed to the side wall of the scraper (804), and the other end of the rectangular rod (903) is fixedly connected to a disc (905), and the side wall of the rectangular rod (903) is sleeved with a third spring (904), and the movement of the disc (905) is driven by a third driving mechanism; The third pushing mechanism comprises two symmetrically arranged T-shaped guide rods (1001) inserted into the side wall of the first moving block (802), and one end of the T-shaped guide rod (1001) is fixedly connected to the third moving block (1002), the side wall of each of the T-shaped guide rods (1001) is sleeved with a fourth spring (1004), and the side wall of the first moving block (802) is fixedly connected to an electromagnet (1005), the side wall of the third moving block (1002) is fixedly connected to an iron block (1006), and the side wall of the third moving block (1002) is fixedly connected to a third moving plate (1003), the third moving plate (1003) penetrates into the inner cylinder (102) and is fixedly connected to a plurality of pushing blocks (1008) arranged in an array, the pushing block (1008) comprises a second inclined surface (1009), and the end of each disc (905) is fixedly connected to a pushing pin (1007).

6. A lithium sulfide production process, using a lithium sulfide calcining device as described in any one of claims 1 to 5, characterized in that: The following steps are involved: S1: First batching and mixing: lithium blocks and sulfur blocks are batched and mixed using a mixing device; S2: First calcination: The mixed materials are put into a high-temperature vacuum calcination device, and the auxiliary mechanism in the high-temperature vacuum calcination device assists in heating to quickly heat the materials for the first calcination; S3: First crushing treatment: After the first calcination is completed, the auxiliary mechanism in the high-temperature vacuum calcination device assists in cooling and cooling the material so that the material is cooled quickly. Then the material after the first calcination is taken out and the first crushing treatment is performed; S4: Secondary batching: adding lithium blocks and sulfur blocks to the crushed materials for secondary batching and mixing; S5: Secondary calcination: the mixed materials are put into a high-temperature vacuum calcination device, and the auxiliary mechanism in the high-temperature vacuum calcination device assists in heating to rapidly heat the materials for secondary calcination; S6: Secondary pulverization: After the secondary calcination is completed, the auxiliary mechanism in the high-temperature vacuum calcination device assists in cooling and cooling the material so that the material is cooled quickly. After that, the secondary calcined material is taken out and subjected to secondary pulverization; S7: Quality inspection and packaging: Quality inspection and packaging of materials after secondary crushing.

7. A lithium sulfide production process according to claim 6, characterized in that: In step S1 , the mixing device used is a glove box.

8. A lithium sulfide production process according to claim 6, characterized in that: In step S2, the calcination temperature is set to 150°C and kept constant for 1 hour.

9. A lithium sulfide production process according to claim 6, characterized in that: In step S2, after maintaining a constant temperature of 150°C for 1 hour, the temperature is raised to 310°C of the second stage and maintained at a constant temperature for 3 hours.

10. A lithium sulfide production process according to claim 6, characterized in that: In step S5, the calcination temperature is set to 550°C and maintained at a constant temperature for 2.5 hours.

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