Ternary lithium powder manufacturing equipment and manufacturing method

Abstract

The embodiment of the present invention relates to a ternary lithium powder manufacturing equipment and a manufacturing method thereof, including a silo, a glove box, a screw feeding and conveying component, an electric butterfly valve, a heating furnace, a reactor, a distributor cooling device, a mesh belt conveying and cooling device, a crushing device, a collecting device and a main control system. As long as the powder is added to the silo, it enters the reactor and the heating furnace containing liquid molten salt at a specific speed through the screw feeding and conveying component. The molten salt quickly melts the powder. After the liquid level in the reactor exceeds the specified height, the molten salt flows into the distributor through the overflow branch pipe and then cools on the drum surface, falls on the mesh belt conveying and cooling device, falls into the crushing device at the top of the conveyor, and finally is crushed and collected manually. The problem of damage to the human body and the environment due to volatilization or decomposition of molten salt in the production process is solved, the automation of ternary lithium powder production is realized, the labor intensity of producing ternary lithium powder is reduced, and the production efficiency of ternary lithium powder is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to a manufacturing device and a manufacturing method thereof, and in particular to a ternary lithium powder manufacturing device and a manufacturing method thereof. Background Art

[0002] At present, the materials of ternary lithium batteries on the market are mainly a mixture of lithium chloride, lithium bromide and lithium fluoride. Since the three materials are easy to absorb moisture in the air, and the traditional method of removing moisture cannot be used, in the existing technology, the method used to produce ternary lithium powder materials is to use several muffle furnaces to melt the mixed salt, and then pour the molten salt on the cooling plate. After cooling, it is manually broken and put into the crusher for granulation. This method requires a lot of manpower for processes such as filling, pouring, and breaking salt; multiple muffle furnaces require a large space and high energy consumption. At the same time, the molten salt is very easy to volatilize or decompose to produce halides during the production process, which is extremely harmful to the human body and the environment. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a ternary lithium powder manufacturing device and a manufacturing method thereof, which mainly solves the problem of artificial production of ternary lithium powder materials in the prior art, solves the problem of harm to the human body and the environment caused by the decomposition or volatilization of molten salt during the production process, and realizes the automation of ternary lithium powder production, reduces the labor intensity of ternary lithium powder production, and improves the production efficiency of ternary lithium powder.

[0004] In order to achieve the above-mentioned object, the embodiment of the present invention designs a ternary lithium powder manufacturing device, which is characterized by comprising:

[0005] A silo, in which a ternary lithium mixed powder is placed;

[0006] An electric butterfly valve is fixedly connected to the bottom of the silo; the electric butterfly valve is used to control the discharge of the ternary lithium mixed powder from the silo;

[0007] A feed conveying component is fixedly connected to the inlet of the feed conveying component at the outlet of the electric butterfly valve; the outlet of the feed conveying component is arranged above the inlet of the heating component; the ternary lithium mixed powder is heated by the heating component to melt the ternary lithium mixed powder and enter the distributor cooling device by overflow;

[0008] The distributor cooling device performs granulation cooling through a distributor, a mesh belt conveyor of an integrated cooling system is arranged below the distributor cooling device, and a crushing device is arranged below the outlet of the mesh belt conveyor of the integrated cooling system;

[0009] The main control system is electrically connected to the electric butterfly valve, the feed conveying component, the heating component, the distributor cooling device and the mesh belt conveying device of the integrated cooling system.

[0010] Furthermore, the silo is configured as a double-layer structure, and a vacuum cleaning system is connected to the outer layer of the silo. The silo also includes:

[0011] A loading bin is provided on the upper part of the loading bin, and the loading bin is a cylindrical structure; a vacuum exhaust port is provided on the upper side of the loading bin, and is connected to a vacuum cleaning system;

[0012] A lower material bin is welded to the lower part of the upper material bin, and the lower material bin is a conical structure; the upper cylinder wall of the lower material bin and the lower cylinder wall of the upper material bin are welded into an integral structure;

[0013] A silo cover is provided above the upper silo, the upper silo and the silo cover are movably connected by a pin shaft or a movable joint, and an air inlet is provided above the silo cover; the silo is connected to the upper silo through the air inlet.

[0014] Furthermore, the feed conveying component further includes:

[0015] A motor is fixed at one end of the feed conveying component;

[0016] A motor reducer, wherein the output shaft of the motor is connected to the input end of the motor reducer arranged on the same axis;

[0017] The gear connector has one end of the gear connector connected to the output end of the motor reducer; the other end of the gear connector is connected to the screw head of the screw;

[0018] A screw rod, which is connected to a motor reducer through a gear connector;

[0019] A screw barrel, in which the screw is arranged; the screw barrel is connected to a motor reducer;

[0020] A magnetic fluid seal is arranged between the screw and the screw barrel. The magnetic fluid seal penetrates into the screw and is fixed on the side surface of one end of the screw barrel.

[0021] Furthermore, the heating component further comprises:

[0022] A heating furnace, the heating furnace is fixed below the heating component; the heating furnace is used to heat the ternary lithium mixed powder;

[0023] A reaction kettle is movably connected to the heating furnace above the reaction kettle; the reaction kettle moves along the longitudinal direction of the heating furnace, and the bottom of the reaction kettle and the inlet of the heating furnace are arranged on the same axis;

[0024] Thermal insulation structure, covering the outside of the heating furnace and the reactor with a thermal insulation structure;

[0025] Thermocouple: a thermocouple is arranged in the heat preservation structure and is attached to the heating furnace to measure the temperature of the heating furnace;

[0026] An overflow branch pipe is arranged on the side of the heating furnace, the overflow branch pipe passes through the insulation structure, and the overflow branch pipe extends into the inlet of the distributor cooling device;

[0027] The outer surface of the overflow branch pipe and the outer surface of the reaction kettle are covered with heating components for heat preservation.

[0028] Furthermore, the distributor cooling device further comprises:

[0029] A distributor is fixed above the distributor cooling device, and a liquid guide needle is arranged above the distributor, and the size and speed of the droplets of the ternary lithium mixed powder in the molten state are controlled by the stroke and thickness of the liquid guide needle;

[0030] A cooling drum is arranged below the distributor, a cooling water pipe is fixed inside the cooling drum, and the cooling water pipe extends into the cavity inside the cooling drum; a water cooling system is connected to the cooling water pipe to cool the cooling drum.

[0031] Furthermore, the mesh belt conveyor device of the integrated cooling system is in the shape of a slide, and the mesh belt conveyor device of the integrated cooling system further comprises:

[0032] A metal mesh belt is arranged on the conveying surface of the mesh belt conveying device of the integrated cooling system;

[0033] A driving roller is arranged above the mesh belt conveyor of the integrated cooling system;

[0034] A passive roller is arranged below the mesh belt conveyor device of the integrated cooling system;

[0035] The metal mesh belt circulates between the driving roller and the passive roller to transport the mixed ternary lithium mixed powder particles;

[0036] A cooling device is arranged inside the metal mesh belt, a cooling water loop is formed in the cooling device through pipelines, and the cooling device cools the metal mesh belt and the ternary lithium mixed powder particles mixed on the metal mesh belt;

[0037] The metal mesh belt frame, the metal mesh belt and the cooling device are all fixed on the metal mesh belt frame; the metal mesh belt frame is also in the shape of a slide, and a discharging plate is fixed on the metal mesh belt frame at the outlet of the metal mesh belt.

[0038] Furthermore, the pulverizing device, which is a blade pulverizer, further comprises:

[0039] A rotating cutting drum is arranged in the middle of the pulverizing device;

[0040] A cutting blade is fixed on the rotating cutting drum;

[0041] A discharging plate on the mesh belt conveyor device of the integrated cooling system is arranged above the pulverizing device;

[0042] A collecting device is arranged below the comminuting device.

[0043] Furthermore, the main control system further includes:

[0044] A PLC device is used as the main control device of the main control system; the PLC device is electrically connected to the electric butterfly valve to control the switch of the electric butterfly valve;

[0045] Touch screen, the PLC device is connected to the touch screen for communication, and the touch screen is used to set the manufacturing parameters of the ternary lithium powder;

[0046] The first frequency converter, the PLC device is electrically connected to the first frequency converter; the first frequency converter is electrically connected to the motor in the feed conveying component, and the first frequency converter controls the speed of the motor and the speed of the feed conveying component;

[0047] A temperature controller is electrically connected to the heating components and thermocouples on the heating furnace, the reaction kettle, and the overflow branch pipe in the heating component, and the temperature controller controls the temperature of the heating furnace, the reaction kettle, and the overflow branch pipe;

[0048] A second frequency converter, the PLC device is electrically connected to the second frequency converter, and is used to control the speed of the cooling drum of the distributor cooling device;

[0049] A third frequency converter, the PLC device is electrically connected to the third frequency converter, and is used to control the conveying speed of the metal mesh belt in the mesh belt conveying device of the integrated cooling system;

[0050] The contactor, the PLC device is electrically connected to the contactor in the pulverizing device and is used to control the start and stop of the blade pulverizer.

[0051] Furthermore, the ternary lithium powder manufacturing equipment also includes:

[0052] A silo frame, on which the silo, the electric butterfly valve and part of the feed conveying components are arranged;

[0053] A glove box is connected to one side of the silo rack, the outlet of the feed conveying component is arranged in the glove box, and the heating component, the distributor cooling device, the mesh belt conveying device of the integrated cooling system, the crushing device and the collecting device are all arranged in the glove box;

[0054] The glove box is connected to a vacuum cleaning system, which evacuates the glove box;

[0055] A transition chamber is provided on the other side of the glove box; a protective gas cleaning system is connected to the transition chamber, and the protective gas cleaning system is used to balance the pressure of the transition chamber on the glove box;

[0056] An air conditioning system is provided on the glove box to cool the temperature inside the glove box;

[0057] A water cooling system is connected to the distributor cooling device and the mesh belt conveyor of the integrated cooling system respectively.

[0058] Furthermore, the glove box further comprises:

[0059] Glove operation holes: a plurality of glove operation holes are arranged on both sides of the glove box; the glove operation holes are used to operate the ternary lithium powder manufacturing equipment.

[0060] Furthermore, an outlet is provided on each side of the transition chamber, a baffle is provided on the outlet, and fixed to the outlet with fixing bolts; a protective gas cleaning system is connected to the transition chamber to balance the air pressure on both sides; a pressure gauge is provided on the transition chamber to observe the pressure on the transition chamber.

[0061] Furthermore, multiple cooling water circuits are arranged on the water cooling system, which are respectively connected to the cooling drum in the distributor cooling device; and connected to the cooling device in the mesh belt conveyor of the integrated cooling system.

[0062] The embodiment of the present invention also provides a method for manufacturing ternary lithium powder, which is characterized by comprising the following steps:

[0063] Step S10: Turn on the power: Turn on the power of the ternary lithium powder manufacturing equipment. After the main control system is started, go to step 20;

[0064] Step S20: Setting parameters: Setting parameters on the touch screen of the main control system of the ternary lithium powder manufacturing equipment. The set parameters include:

[0065] Set the number of silo gas washing, gas washing time and required vacuum value of the silo;

[0066] Setting the rotational speed per minute of the screw in the feed conveying component;

[0067] Set the heating temperature of each section of the heating furnace, reactor and overflow branch pipe in the heating components;

[0068] Setting the conveying speed of the metal mesh belt in the mesh belt conveyor of the integrated cooling system;

[0069] Setting the speed of the rotating cutting drum in the comminution device;

[0070] Turn on the vacuum cleaning system and start to evacuate the glove box; set the vacuum extreme value required for the material bin and the vacuum extreme value of the glove box on the vacuum cleaning system respectively; until the vacuum extreme value reaches the vacuum extreme value required for the material bin and the vacuum value of the glove box;

[0071] Turn on the protective gas cleaning system, set the pressure value of the nitrogen filling, and prepare the protective gas cleaning system;

[0072] Turn on the water cooling system, set the cooling water temperature, and the water cooling system starts cooling until the preset cooling water temperature is reached and then stands by;

[0073] After the heating temperatures of the heating furnace, reactor, and overflow branch pipe in the heated component reach the preset values, the process proceeds to step S30;

[0074] Step S30: Gas washing of the silo: put the mixed ternary lithium raw material into the silo, and lock the silo cover; turn on the vacuum cleaning system, the vacuum cleaning system extracts vacuum on the ternary lithium raw material, and after reaching the set vacuum value, fill it with protective gas, and repeatedly perform the vacuum pumping-filling process of the silo, and perform gas washing according to the three parameters of gas washing number, gas washing time, and vacuum value required by the silo until the vacuum value of the silo and the glove box is the same; enter step S40:

[0075] Step S40: Material conveying: the main control system automatically turns on the motor in the feed conveying component, and the screw starts to feed the material to the heating furnace; until the speed at which the heating furnace discharges the molten salt of ternary lithium, the speed at which the molten salt of ternary lithium in the distributor cooling device drops, and the speed at which the ternary lithium powder is conveyed by the feed conveying component reach a balance;

[0076] The mesh belt conveyor, water cooling system and pulverizing device of the integrated cooling system are automatically turned on, and the cooled ternary lithium particles are conveyed to the pulverizing device through the mesh belt conveyor of the integrated cooling system until the speed at which the mesh belt conveyor of the integrated cooling system conveys the cooled ternary lithium particles matches the pulverizing speed of the pulverizing device. The ternary lithium particles cooled by the pulverizing device are pulverized until the ternary lithium powder has the required size, and then enter the collecting device, and then enter step 50:

[0077] Step S50: Collection and bagging: In the collection device, the ternary lithium powder described in step S40 is collected and bagged, and then the process proceeds to step S60:

[0078] Step S60: Taking materials: Manually start the protective gas cleaning system, draw vacuum into the transition chamber, and after reaching the set vacuum value, fill in the protective gas. Repeat the vacuuming-filling process of the material bin until the preset vacuum value of the glove box is reached, so that the atmosphere of the glove box is the same as the atmosphere of the transition chamber, and then open the baffle close to the glove box, put the ternary lithium powder described in step S50 into the transition chamber, and then cover the baffle; tighten the bolts to seal the transition chamber, and then start the protective gas cleaning system, fill nitrogen into the transition chamber to reach the pressure outside the transition chamber, so that the pressure inside and outside the transition chamber is balanced, and then open the baffle on the other side of the transition chamber to take out the ternary lithium powder.

[0079] Furthermore, the heating temperature of each section of the heating furnace, the reaction kettle, and the overflow branch pipe in the heating component in step S20 reaches a preset value, and further includes the following sub-steps:

[0080] Step S21: determine whether the temperature of the heating furnace, the reaction kettle, and the overflow branch pipe sections in the heating component is lower than the preset value of the heating furnace, the reaction kettle, and the overflow branch pipe sections in the heating component; if it is lower than the preset value, enter step S22; if it is equal to or higher than the preset value, enter step S23; and loop between step S22 and step S23;

[0081] Step S22: heating, the main control system controls the temperature controller to output power to the heating furnace, the reaction kettle, and the heating components on the overflow branch pipe in the heating components;

[0082] Step S23: the main control system controls the temperature controller to reduce the power of the heating furnace, the reaction kettle and the heating components on the overflow branch pipe in the heating component to maintain a constant temperature state.

[0083] Furthermore, the falling speed of the ternary lithium molten salt discharged from the heating furnace in step S40 matches the speed of the ternary lithium powder conveyed by the feed conveying component, and further includes the following sub-steps:

[0084] Step S41: determining speed balance, determining whether the speed of the ternary lithium molten salt discharged from the heating furnace, the speed of the ternary lithium molten salt droplets falling in the distributor cooling device, and the speed of the ternary lithium powder conveyed by the feed conveying component are balanced;

[0085] If ternary lithium molten salt droplets overflow from the distributor in the distributor cooling device, the process proceeds to step S42;

[0086] If there is unmelted ternary lithium powder in the heating furnace, the process goes to step S43;

[0087] If there is unmelted ternary lithium powder in the heating furnace, and ternary lithium molten salt droplets overflow from the distributor in the distributor cooling device, then the process goes to step S44;

[0088] If there is no unmelted ternary lithium powder in the heating furnace, and no ternary lithium molten salt droplets overflow from the distributor in the distributor cooling device, then the process proceeds to step S45;

[0089] Step S42: decelerating, in which the main control system reduces the rotation speed of the screw in the feed conveying component, thereby reducing the speed of the ternary lithium powder being conveyed;

[0090] Step S43: increasing the preset value, and increasing the preset temperature value of the heating furnace in the main control system;

[0091] Step S44: raising the temperature and lowering the speed, raising the preset temperature value of the heating furnace in the main control system and lowering the rotation speed of the screw in the feeding and conveying component in the main control system, lowering the speed of the ternary lithium powder being conveyed, or entering step S42 or entering step S43;

[0092] Step S45: Increasing the rotation speed of the screw in the feed conveying component in the main control system to speed up the conveying speed of the ternary lithium powder;

[0093] Until the speed at which the ternary lithium molten salt is discharged from the heating furnace, the speed at which the ternary lithium molten salt droplets fall in the distributor cooling device, and the speed at which the ternary lithium powder is transported by the feed conveying component reach a balance.

[0094] Furthermore, the speed at which the mesh belt conveyor device of the integrated cooling system in step S40 feeds the cooled ternary lithium particles matches the pulverizing speed of the pulverizing device, and further includes the following sub-steps:

[0095] Step S46: determining the speed at which the mesh belt conveyor device of the integrated cooling system delivers the cooled ternary lithium particles and the pulverizing speed of the pulverizing device;

[0096] If the cooled ternary lithium particles fed by the mesh belt conveyor of the integrated cooling system are deposited on the pulverizing device, then step S47 is entered:

[0097] If the cooled ternary lithium particles sent by the mesh belt conveyor of the integrated cooling system are not accumulated on the pulverizing device, then the process proceeds to step S45:

[0098] Step S47: reducing the speed of the metal mesh belt on the mesh belt conveyor of the integrated cooling system.

[0099] Compared with the prior art, the present invention is designed in an embodiment of the present invention to be composed of components such as a silo, a glove box, a screw feeding and conveying component, an electric butterfly valve, a heating furnace, a reactor, a distributor cooling device, a mesh belt conveying and cooling device, a crushing device, a collecting device and a main control system. In this embodiment of the present invention, as long as the powder is added to the silo and mixed evenly, it is fed into the reactor and the heating furnace containing liquid molten salt at a specific speed through the screw feeding and conveying component to achieve rapid melting of the powder by the molten salt. After the liquid level in the reactor exceeds the specified height, the ternary lithium liquid molten salt flows into the distributor through the overflow branch pipe, cools on the drum surface, falls on the mesh belt conveying and cooling device, and falls into the crushing device at the top of the conveyor. Finally, after being crushed, it is collected manually. The production process is automated, and only manual feeding and collecting are required during the production process, saving a lot of labor costs; except for the silo and some screw feeding and conveying components, the rest are placed in a protected glove box, and the powder and molten salt in the box will not volatilize into the environment, which is far less harmful to the human body and environmental pollution than the production method in the prior art. The daily output of the ternary lithium powder manufacturing equipment in the embodiment of the present invention is about 20 times that of a single muffle furnace. Compared with the existing method, it has the characteristics of low comprehensive cost, small total floor space, and low total power consumption. It solves the problem of using manual labor to produce ternary lithium powder materials in the prior art, solves the problem of large space required for multiple muffle furnaces, and high energy consumption. At the same time, the molten salt is very easy to volatilize or decompose to produce halides during the production process, which is extremely harmful to the human body and the environment. At the same time, the automation of ternary lithium powder production is realized, the labor intensity of producing ternary lithium powder is reduced, and the production efficiency of ternary lithium powder is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0100] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention in the main viewing direction after being rotated 90°;

[0101] Figure 2 This is a schematic diagram of the structure in the main view direction of the first embodiment of the present invention without the glove box;

[0102] Figure 3 This is a schematic diagram of the structure in a top view of the first embodiment of the present invention without the glove box;

[0103] Figure 4 This is a schematic diagram of the structure of the first embodiment of the present invention when the glove box is removed, as viewed from the left;

[0104] Figure 5 It is a schematic structural diagram of a silo in the first embodiment of the present invention;

[0105] Figure 6 It is a structural schematic diagram of the feeding and conveying component in the first embodiment of the present invention;

[0106] Figure 7 It is a schematic structural diagram of the heating part of the present invention in the AA direction;

[0107] Figure 8 is a schematic structural diagram of a distributor cooling device in a first embodiment of the present invention;

[0108] Fig. 9 is a schematic structural diagram of a distributor in a first embodiment of the present invention;

[0109] Fig.10 It is a schematic diagram of a cooling drum in a first embodiment of the present invention when viewed from above;

[0110] Fig.11 It is a structural schematic diagram of a mesh belt conveying cooling device in a first embodiment of the present invention;

[0111] Fig.12 It is a schematic structural diagram of a pulverizing device in a first embodiment of the present invention;

[0112] Fig.13 This is a control schematic diagram of the main control system in the first embodiment of the present invention;

[0113] Fig.14 It is a schematic diagram of a manufacturing method of a ternary lithium powder manufacturing device in a second embodiment of the present invention;

[0114] Fig.15 This is a schematic diagram of step S20 of the ternary lithium powder manufacturing equipment in the second embodiment of the present invention;

[0115] Fig.16 This is a schematic diagram of the first step of step S40 of the ternary lithium powder manufacturing equipment in the second embodiment of the present invention;

[0116] Fig.17 This is a schematic diagram of the second step of step S40 of the ternary lithium powder manufacturing equipment in the second embodiment of the present invention. DETAILED DESCRIPTION

[0117] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection in the claims of the present application can be implemented.

[0118] The first embodiment of the present invention relates to a ternary lithium powder manufacturing device, such as Figure 1 and Figure 2 As shown, including:

[0119] Ternary lithium mixed powder is placed in the silo 10. Since the ternary lithium mixed powder mainly includes lithium chloride, lithium bromide and lithium fluoride, it is very easy to absorb moisture in the air. The silo 10 is not only used to hold the ternary lithium mixed powder, but also has the function of removing air and dehumidifying the ternary lithium mixed powder.

[0120] In the first embodiment of the present invention, Figure 3 As shown, the silo 10 is configured as a double-layer structure. The double-layer structure is mainly to enable the vacuum cleaning system 20 to be connected to the silo 10. The vacuum cleaning system 20 is connected to the outer layer of the silo 10 to remove the air in the ternary lithium mixed powder and play a dehumidification role. The silo 10, as shown Figure 2 and Figure 5 As shown, it also includes:

[0121] The upper silo 11 is arranged on the upper part of the silo 10, and the upper silo 11 is a cylindrical structure; a vacuum exhaust port 12 is arranged on the upper side of the upper silo 11, and is connected to the vacuum cleaning system 20; the vacuum cleaning system 20 mainly functions to extract vacuum, remove the air and moisture in the air of the ternary lithium mixed powder in the silo 10, that is, to play a dehumidifying role.

[0122] The lower silo 13 is welded to the lower part of the upper silo 11 and is a conical structure. The upper wall of the lower silo 13 and the lower wall of the upper silo 11 are welded to form an integrated structure. The upper silo 11 and the lower silo 13 form an integrated structure of the silo 10.

[0123] A silo cover 14 is provided above the upper silo 11. The upper silo 11 and the silo cover 14 are movably connected by a pin or a movable joint. The silo cover 14 can be opened above the upper silo 11. An air inlet 15 is provided above the silo cover 14; the silo is connected to the upper silo 11 through the air inlet 15. The vacuum cleaning system 20 is respectively connected to the air inlet 15 and the vacuum exhaust port 12 to wash the silo 10 and the ternary lithium mixed powder in the silo 10. The vacuum cleaning system 20 repeatedly extracts vacuum and fills nitrogen in the silo 10 and the ternary lithium mixed powder in the silo 10 alternately, and completely replaces the air in the silo 10 and the ternary lithium mixed powder in the silo 10, so as to achieve the function of washing, that is, to remove the air and moisture in the air in the ternary lithium mixed powder in the silo 10, that is, to play a dehumidifying role.

[0124] An electric butterfly valve 30 is fixedly connected below the silo 10 ; the discharge of the ternary lithium mixed powder from the silo 10 is controlled by the electric butterfly valve 30 . The electric butterfly valve 30 mainly controls the ternary lithium mixed powder to enter the feed conveying component 40 from the switch silo 10 . The electric butterfly valve 30 is a passage between the switch silo 10 and the feed conveying component 40 .

[0125] In the first embodiment of the present invention, Figure 2 , Figure 4 and Figure 6 As shown,

[0126] The feed conveying component 40 is fixedly connected to the inlet of the feed conveying component 40 at the outlet of the electric butterfly valve 30; in order to further realize the function of conveying the ternary lithium mixed powder, the feed conveying component 40 also includes:

[0127] The motor 41 is fixed at one end of the feed conveying component 40; the motor 41 provides rotational power for the entire feed conveying component 40; the motor reducer 42 mainly functions to reduce speed and increase power.

[0128] The motor reducer 42 is configured such that the output shaft of the motor 41 is connected to the input end of the motor reducer 42 which is arranged on the same axis.

[0129] The gear connector 43 is connected to one end of the gear connector 43 via a shaft at the output end of the motor reducer 42; the other end of the gear connector 43 is connected to the screw head of the screw 44; the motor reducer 42 is connected to the screw 44 via the gear connector 43; the motor 41 drives the motor reducer 42 to rotate, and the motor reducer 42 is connected to the screw 44 via the gear connector 43.

[0130] The screw 44 is arranged in the screw barrel 45; the screw barrel 45 is connected to the motor reducer 42; the screw 44 is rotated to convey the ternary lithium mixed powder through the gap between the screw 44 and the screw barrel 45; in order to solve the sealing problem between the screw 44 and the screw barrel 45, a magnetic fluid seal 46 is arranged between the screw 44 and the screw barrel 45, and the magnetic fluid seal 46 penetrates into the screw 44 and is fixed on the side of one end of the screw barrel 45.

[0131] In the first embodiment of the present invention, Figure 2 and Figure 7 As shown, after the ternary lithium mixed powder is transported by the feed conveying component 40, it enters the heating component 50, and the outlet 47 of the feed conveying component 40 is arranged above the inlet of the heating component 50; the ternary lithium mixed powder is heated by the heating component 50 to melt the ternary lithium mixed powder and overflow, wherein the heating component 50 is as shown in FIG. Figure 7 As shown, it also includes:

[0132] The heating furnace 51 is fixed below the heating component 50 ; the heating furnace 51 is used to heat the ternary lithium mixed powder; and melt the ternary lithium mixed powder into a liquid state.

[0133] A reaction kettle 52 is movably connected above the heating furnace 51; the reaction kettle 52 moves along the longitudinal direction of the heating furnace 51, and the bottom of the reaction kettle 52 and the entrance of the heating furnace 51 are arranged on the same axis; in this way, the ternary lithium melted into liquid can enter the heating furnace 51 from the reaction kettle 52; in order to play a role in heat preservation, an insulation structure 53 is coated on the outside of the heating furnace 51 and the reaction kettle 52.

[0134] A thermocouple 54 is provided in the heat-insulating structure 53 . The thermocouple 54 is attached to the heating furnace 51 and is used to measure the temperature of the heating furnace 51 . The thermocouple 54 is used to measure the temperature inside the heating furnace 51 .

[0135] An overflow branch pipe 55 is arranged on the side of the heating furnace 51, and the overflow branch pipe 55 passes through the insulation structure 53, and extends into the entrance of the distributor cooling device 60; the overflow branch pipe 55 mainly functions to discharge the melted ternary lithium raw material, and can adopt the principle of molten salt melting salt, and discharge the melted ternary lithium raw material by overflow, so that the ternary lithium mixed powder can be fully melted, so the principle of molten salt melting salt is adopted, and the overflow method needs to be adopted.

[0136] In order to better heat the melted ternary lithium raw material and allow it to flow out of the heating furnace 51 and into the distributor cooling device 60 , heating components are coated on the outer surface of the overflow branch pipe 55 and the outer surface of the reaction kettle 52 for heat preservation.

[0137] In the first embodiment of the present invention, Figure 2 and Figure 8 As shown, when the melted ternary lithium raw material flows out of the heating furnace 51, it enters the distributor cooling device 60 for granulation and cooling.

[0138] The distributor cooling device 60 performs granulation cooling through the distributor, such as Figure 8 , Fig. 9 and Fig.10 As shown, the distributor cooling device 60 also includes:

[0139] A distributor 61 is fixed above the distributor cooling device 60, and a liquid guide needle 62 is arranged above the distributor 61. The size and speed of droplets of the ternary lithium mixed powder in a molten state are controlled by the stroke and thickness of the liquid guide needle 62; the droplets of the ternary lithium mixed powder in a molten state drop onto a cooling drum 63 arranged below for cooling.

[0140] A cooling drum 63 is arranged below the distributor 61, and a cooling water pipe 64 is fixed inside the cooling drum 63, and the cooling water pipe 64 extends into the cavity inside the cooling drum 63; a water cooling system 70 is connected to the cooling water pipe 64 to cool the cooling drum 63; when the cooling drum 63 is rotating, the droplets of the cooled ternary lithium mixed powder in the molten state can be transformed into ternary lithium mixed powder particles, which fall off the cooling drum 63 due to the centrifugal force during the rotation of the cooling drum 63 and fall into the mesh belt conveyor 80 of the integrated cooling system arranged below.

[0141] In the first embodiment of the present invention, Figure 2 and Fig.11 As shown, a mesh belt conveyor 80 of an integrated cooling system is arranged below the distributor cooling device 60. The mesh belt conveyor 80 of the integrated cooling system is in the shape of a slide. The mesh belt conveyor 80 of the integrated cooling system further includes:

[0142] A metal mesh belt 81 is provided on the conveying surface of the mesh belt conveyor 80 of the integrated cooling system; the metal mesh belt 81 mainly conveys the ternary lithium mixed powder particles and further cools the ternary lithium mixed powder particles during the conveying process.

[0143] A driving roller 82 is arranged above the mesh belt conveyor 80 of the integrated cooling system; the driving roller 82 is used to drive the metal mesh belt 81 to drive the metal mesh belt 81 to rotate, and is used to convey the ternary lithium mixed powder particles on the metal mesh belt 81.

[0144] A passive roller 83 is arranged below the mesh belt conveyor 80 of the integrated cooling system; the passive roller 83 mainly rotates with the driving roller 82 to form the metal mesh belt 81 into a ring structure, forming a rotation cycle, so that the metal mesh belt 81 circulates between the driving roller 82 and the passive roller 83 to transport the ternary lithium mixed powder particles.

[0145] A cooling device 84 is arranged inside the metal mesh belt 81 . A cooling water loop is formed in the cooling device 84 through pipelines. The cooling device 84 cools the metal mesh belt and the ternary lithium mixed powder particles on the metal mesh belt 81 .

[0146] The metal mesh belt 81 and the cooling device 84 are both fixed on the metal mesh belt frame 85; the metal mesh belt frame 85 is also in the shape of a slide, and a discharge plate 86 is fixed on the metal mesh belt frame 85 at the outlet of the metal mesh belt 81. The metal mesh belt 81 is confined in the metal mesh belt frame 85, and the metal mesh belt 81 runs along the shape of the slide-shaped outer shell of the metal mesh belt frame 85, so the metal mesh belt 81 can transport the ternary lithium mixed powder particles.

[0147] In the first embodiment of the present invention, Figure 2 and Fig.12 As shown, through the conveying and cooling of the mesh belt conveyor 80 of the integrated cooling system, the ternary lithium mixed powder particles are conveyed to the crushing device 90 for further crushing. The crushing device 90 is arranged below the outlet of the mesh belt conveyor 80 of the integrated cooling system; the ternary lithium mixed powder particles fall directly into the crushing device 90.

[0148] The crushing device 90 is a blade crusher, and further comprises:

[0149] A rotating cutting drum 91 is disposed in the middle of the pulverizing device 90; the rotating cutting drum 91 is mainly used to pulverize the ternary lithium mixed powder particles, pulverize the ternary lithium mixed powder particles into ternary lithium powder, and pulverize to the required mesh size;

[0150] A cutting blade 92 is fixed on the rotating cutting drum 91; the cutting blade 92 is installed on the rotating cutting drum 91 to play a cutting role.

[0151] A discharge plate 86 on the mesh belt conveyor 80 of the integrated cooling system is arranged above the pulverizing device 90; in order to facilitate the feeding, the discharge plate 86 is arranged above the pulverizing device 90, and the ternary lithium mixed powder particles can directly enter the pulverizing device 90 from the mesh belt conveyor 80 of the integrated cooling system, and the ternary lithium powder pulverized by the pulverizing device 90 is collected, so a collecting device 100 is arranged below the pulverizing device 90.

[0152] In the first embodiment of the present invention, the above-mentioned ternary lithium powder manufacturing equipment composition and mechanical component structure, the above-mentioned mechanical components all need to be controlled by a control system, such as Fig.13 As shown, in the first embodiment of the present invention, a main control system of a ternary lithium powder manufacturing device is disclosed.

[0153] The main control system 110 is electrically connected to the electric butterfly valve 30, the feed conveying component 40, the heating component 50, the distributor cooling device 60 and the mesh belt conveying device 80 of the integrated cooling system. The main control system 110 is used to control the movement and temperature control of the above components, such as Fig.13 As shown,

[0154] The main control system 110 further includes:

[0155] The PLC device 111 serves as the main control device of the main control system 110; the PLC device 111 is mainly used to control the operation process and component operation control of the ternary lithium powder manufacturing equipment. The PLC device 111 is electrically connected to the electric butterfly valve 30 to control the switch of the electric butterfly valve 30; controlling the switch of the electric butterfly valve 30 can control the ternary lithium mixed powder to enter the feed conveying component 40 from the switch silo 10.

[0156] The PLC device 111 is connected to the touch screen 112 for communication. The touch screen 112 is mainly used to set the manufacturing parameters of the ternary lithium powder manufacturing equipment. The PLC device 111 and the touch screen 112 exchange control signals through the communication connection to realize the sharing of action and temperature control and human-machine interface.

[0157] The PLC device 111 is electrically connected to the first frequency converter 113, and the PLC device 111 controls the first frequency converter 113. The PLC device 111 and the first frequency converter 113 exchange signals of the rotation speed of the motor 41; the first frequency converter 113 is electrically connected to the motor 41 in the feed conveying component 40, and the first frequency converter controls the rotation speed of the motor 41, and controls the rotation speed of the feed conveying component 40; that is, controls the rotation speed of the screw 44, thereby controlling the speed of conveying the ternary lithium mixed powder.

[0158] The temperature controller 114 is electrically connected to the heating components and thermocouples 54 on the heating furnace 51, the reaction kettle 52, and the overflow branch pipe 55 in the heating component 50, and the temperature controller 114 controls the temperature of the heating furnace, the reaction kettle, and the overflow branch pipe;

[0159] The PLC device 111 is electrically connected to the second frequency converter 115, and the PLC device 111 and the second frequency converter 115 exchange signals of the rotation speed of the cooling drum 63, which are used to control the rotation speed of the cooling drum 63 of the distributor cooling device 60; the second frequency converter 115 is electrically connected to the cooling drum 63 of the distributor cooling device 60, and controls the rotation speed of the cooling drum 63, that is, controls the cooling speed of the distributor cooling device 60, that is, controls the speed of the droplets of the ternary lithium mixed powder in the molten state, and indirectly controls the manufacturing output of the ternary lithium powder.

[0160] The third frequency converter 116, the PLC device 111 is electrically connected to the third frequency converter 116, and is used to control the conveying speed of the metal mesh belt 81 in the mesh belt conveyor 80 of the integrated cooling system; after the PLC device 111 is electrically connected to the third frequency converter 116, the third frequency converter 116 is used to control the conveying speed of the metal mesh belt 81, so as to control the speed at which the ternary lithium powder enters the pulverizing device 90.

[0161] The PLC device 111 is electrically connected to the contactor 117 in the pulverizing device 90 to control the start and stop of the pulverizing device 90. The PLC device 111 is electrically connected to the contactor 117 in the pulverizing device 90 to start and stop the pulverizing device 90 and to control the switch for pulverizing the ternary lithium powder.

[0162] In the first embodiment of the present invention, Figure 1 , Figure 2 As shown, the ternary lithium powder manufacturing equipment also includes:

[0163] The silo 10 , the electric butterfly valve 30 and part of the feed conveying component 40 are all arranged on a silo frame 120 ; the silo frame 120 serves to support the silo 10 and the feed conveying component 40 .

[0164] A glove box 130 is connected to one side of the silo rack 120, the outlet of the feed conveying component 40 is arranged in the glove box 130, and the heating component 50, the distributor cooling device 60, the mesh belt conveying device 80 of the integrated cooling system, the crushing device 90 and the collecting device 100 are all arranged in the glove box 130; the glove box 130 is mainly used to prevent the ternary lithium raw material from mixing into the ternary lithium mixed powder during the manufacturing process, and to absorb moisture in the air, thereby preventing the ternary lithium raw material from contacting the air during the manufacturing process, and improving the quality of the ternary lithium powder product.

[0165] The glove box 130 is connected to a vacuum cleaning system 20, which evacuates the glove box 130 to a vacuum state. The vacuum cleaning system 20 mainly serves to evacuate the glove box 130 or, if necessary in certain circumstances, to fill the glove box 130 with an appropriate amount of nitrogen to form a slightly positive pressure state in the glove box 130.

[0166] A transition chamber 140 is provided on the other side of the glove box 130; a protective gas cleaning system 150 is connected to the transition chamber 140, and the protective gas cleaning system 150 is used to balance the pressure of the transition chamber 140 on the glove box 130; the main function of the transition chamber 140 is to take out the processed ternary lithium powder without destroying the pressure environment of the glove box 130.

[0167] like Figure 1 As shown, the glove box 130 further includes:

[0168] Glove operation holes 131 , a plurality of glove operation holes 131 are provided on both sides of the glove box 130 ; the glove operation holes 131 are used to operate the ternary lithium powder manufacturing equipment.

[0169] like Figure 1 As shown, in this embodiment, an outlet 141 is respectively provided on both sides of the transition cabin 140, and a baffle 142 is provided on the outlet 141 and fixed to the outlet 141 with fixing bolts; a protective gas cleaning system 150 is connected to the transition cabin 140 to balance the air pressure on both sides; a pressure gauge 143 is provided on the transition cabin 140 to observe the pressure on the transition cabin 140, and the baffle 142 provided on the outlet 141 can only be opened when the pressure in the transition cabin 140 is approximately equal to that in the glove box 130. When it is necessary to take out the ternary lithium powder that has been produced, the protective gas cleaning system 150 first needs to extract the air in the transition cabin 140. When the pressure in the transition cabin 140 is roughly equal to that in the glove box 130, the baffle 142 in the transition cabin 140 is opened, the ternary lithium powder is put in, and then the baffle 142 is covered and fixed with bolts. Then the protective gas cleaning system 150 fills nitrogen into the transition cabin 140. When the pressure in the transition cabin 140 is roughly equal to that in the atmosphere, the outer baffle 142 is opened, the ternary lithium powder is taken out, the baffle 142 is covered and locked, and the process of taking out the ternary lithium powder is completed.

[0170] An air conditioning system 160 is provided on the glove box 130 to cool the temperature inside the glove box 130. The air conditioning system 160 is installed on the glove box 130, mainly to reduce the temperature of the glove box 130, so that the temperature inside the glove box 130 is suitable for manufacturing the ternary lithium powder.

[0171] In order to reduce the temperature of the production process of the ternary lithium powder, the water cooling system 70 is connected to the distributor cooling device 60 and the mesh belt conveyor 80 of the integrated cooling system respectively, and multiple cooling water circuits are set on the water cooling system 70, one of which is connected to the cooling drum 63 in the distributor cooling device 60; and another is connected to the cooling device 84 in the mesh belt conveyor 80 of the integrated cooling system. The water cooling system 70 is used to reduce the cooling drum 63 and the cooling device 84. In the production process of the ternary lithium powder in this embodiment, the main cooling step is the cooling of the cooling drum 63 and the cooling device 84.

[0172] In the second embodiment of the present invention, a method for manufacturing a ternary lithium powder is disclosed, starting from a powder mixed with three materials of lithium chloride, lithium bromide and lithium fluoride, until the manufacturing process of the ternary lithium powder is completed. Fig.14 As shown, the following steps are included:

[0173] Step S10: Turn on the power: Turn on the power of the ternary lithium powder manufacturing equipment in the first embodiment of the present invention. After the main control system 110 is started, enter step 20;

[0174] Step S20: Setting parameters: Setting parameters in the touch screen 112 of the main control system 110 of the ternary lithium powder manufacturing equipment. The set parameters include:

[0175] Set the number of gas washing times and gas washing time of the silo 10 respectively; the vacuum value required for the silo;

[0176] Setting the rotational speed per minute of the screw 44 in the feed conveying component 40;

[0177] Setting the heating temperature of each section of the heating furnace 51, the reaction kettle 52, and the overflow branch pipe 55 in the heating component 50;

[0178] Setting the conveying speed of the metal mesh belt 81 in the mesh belt conveyor 80 of the integrated cooling system;

[0179] Setting the rotation speed of the rotary cutting drum 91 in the pulverizing device 90;

[0180] Turn on the vacuum cleaning system 20 and start to evacuate the glove box 130; set the vacuum extreme value required for the material bin 10 and the vacuum value of the glove box 130 on the vacuum cleaning system 20; until the vacuum extreme value reaches the vacuum extreme value required for setting the material bin 10 and the vacuum extreme value of the glove box 130;

[0181] The protective gas cleaning system 150 is turned on, and the pressure value of the nitrogen gas is set, and the protective gas cleaning system 150 is ready;

[0182] The water cooling system 70 is turned on, and the cooling water temperature is set. The water cooling system 70 starts cooling until the preset cooling water temperature is reached, and then the system is ready for standby;

[0183] The sub-steps in step S20 are as follows: Fig.15 As shown, it also includes:

[0184] In step S20, the heating temperatures of the heating furnace 51, the reaction kettle 52, and the overflow branch pipe 55 in the heating component 50 reach preset values, and the following sub-steps are also included:

[0185] Step S21: determine whether the temperature of the heating furnace, the reaction kettle, and the overflow branch pipe sections in the heating component is lower than the preset value of the heating furnace, the reaction kettle, and the overflow branch pipe sections in the heating component; if it is lower than the preset value, enter step S22; if it is equal to or higher than the preset value, enter step S23; and loop between step S22 and step S23;

[0186] Step S22: heating, the main control system controls the temperature controller to output voltage to the heating components on the heating furnace, the reaction kettle and the overflow branch pipe in the heating component;

[0187] Step S23: Stop heating, the main control system controls the temperature controller to cut off the voltage of the heating furnace, the reaction kettle and the heating components on the overflow branch pipe in the heating components.

[0188] After the heating temperatures of the heating furnace 51, the reaction kettle 52, and the overflow branch pipe 55 in the heated component 50 reach the preset values, the process proceeds to step S30;

[0189] Step S30: Gas washing of the silo 10: Put the mixed ternary lithium raw material into the silo 10, and lock the silo cover 14; Turn on the vacuum cleaning system 20, the vacuum cleaning system 20 extracts vacuum on the ternary lithium raw material, and after reaching the set vacuum value, fill it with protective gas, and repeatedly perform the vacuum pumping-filling process on the silo, and perform gas washing according to the three parameters of gas washing number, gas washing time, and vacuum value required by the silo until the vacuum value of the silo and the glove box is the same; Enter step S40:

[0190] Step S40: Material transportation: The main control system 110 automatically turns on the motor 41 in the feed conveying component 40, and the screw 44 starts to feed the material to the heating furnace 51; until the speed at which the ternary lithium molten salt is discharged from the heating furnace 51, the speed at which the ternary lithium molten salt droplets in the distributor cooling device 60 fall, and the speed of the ternary lithium powder conveyed by the feed conveying component 40 reach a balance; the balance means that the amount of ternary lithium molten salt discharged from the heating furnace 51, the amount of ternary lithium molten salt droplets falling in the distributor cooling device 60, and the amount of ternary lithium powder conveyed by the feed conveying component 40 remain consistent.

[0191] The mesh belt conveyor 80, the water cooling system 70 and the crushing device 90 of the integrated cooling system are automatically turned on, and the cooled ternary lithium particles are conveyed to the crushing device 90 by the mesh belt conveyor 80 of the integrated cooling system until the speed of the mesh belt conveyor 80 of the integrated cooling system feeding the cooled ternary lithium particles matches the crushing speed of the crushing device 90. The ternary lithium particles cooled by the crushing device 90 are crushed until the size of the ternary lithium powder is required, and then enter the collecting device 100, and then enter step 50:

[0192] In the second embodiment of the present invention, the falling speed of the ternary lithium molten salt discharged from the heating furnace 51 in step S40 matches the speed of the ternary lithium powder conveyed by the feed conveying component 40, such as Fig.16 , and also includes the following sub-steps:

[0193] Step S41: determining the speed balance, determining whether the speed of the ternary lithium molten salt discharged from the heating furnace 51, the speed of the ternary lithium molten salt droplets falling in the distributor cooling device 60, and the speed of the ternary lithium powder conveyed by the feed conveying component 40 are balanced;

[0194] If the ternary lithium molten salt droplets overflow from the distributor in the distributor cooling device 60, the process proceeds to step S42;

[0195] If there is unmelted ternary lithium powder in the heating furnace 51, the process proceeds to step S43;

[0196] If there is unmelted ternary lithium powder in the heating furnace 51 and ternary lithium molten salt droplets are overflowing from the distributor 61 in the distributor cooling device 60, the process proceeds to step S44;

[0197] If there is no unmelted ternary lithium powder in the heating furnace 51 and no molten salt droplets of ternary lithium overflow from the distributor 61 in the distributor cooling device 60, the process proceeds to step S45;

[0198] Step S42: decelerating, in the main control system 110, the rotation speed of the screw 44 in the feed conveying component 40 is reduced to reduce the speed of the ternary lithium powder being conveyed;

[0199] Step S43: increasing the preset value, increasing the preset temperature value of the heating furnace 51 in the main control system 110;

[0200] Step S44: temperature increase and speed reduction, in the main control system 110, the temperature preset value of the heating furnace 51 is increased and the rotation speed of the screw 44 in the feed conveying component 40 is reduced in the main control system 110, so as to reduce the speed of the ternary lithium powder being conveyed or proceed to step S42 or step S43;

[0201] Step S45: speeding up, in which the main control system 110 increases the rotation speed of the screw 44 in the feed conveying component 40 to speed up the conveying speed of the ternary lithium powder;

[0202] Until the speed of discharging the ternary lithium molten salt from the heating furnace 51, the speed of the ternary lithium molten salt droplets falling in the distributor cooling device 60 and the speed of the ternary lithium powder conveyed by the feed conveying component 40 reach a balance.

[0203] In the embodiment of the present invention, the speed at which the mesh belt conveyor 80 of the integrated cooling system delivers the cooled ternary lithium particles matches the pulverizing speed of the pulverizing device 90. Fig.17 As shown, in step S40, the speed at which the mesh belt conveyor 80 of the integrated cooling system feeds the cooled ternary lithium particles matches the pulverizing speed of the pulverizing device 90, and further includes the following sub-steps:

[0204] Step S46: determining the speed at which the mesh belt conveyor 80 of the integrated cooling system delivers the cooled ternary lithium particles and the pulverizing speed of the pulverizing device 90;

[0205] If the cooled ternary lithium particles fed by the mesh belt conveyor 80 of the integrated cooling system are deposited on the crushing device 90, the process proceeds to step S47:

[0206] If the cooled ternary lithium particles sent by the mesh belt conveyor 80 of the integrated cooling system are not accumulated on the crushing device 90, the process proceeds to step S45:

[0207] Step S47: reducing the speed of the metal mesh belt 81 on the mesh belt conveyor 80 of the integrated cooling system.

[0208] In the above step S40, the pulverizing device 90 pulverizes the ternary lithium particles into the required size of the ternary lithium powder, and then enters the collecting device 100, and then enters step S50;

[0209] Step S50: Collection and bagging: In the collection device 100, after the ternary lithium powder described in step S40 is collected and bagged, the process proceeds to step S60:

[0210] Step S60: taking materials: manually open the protective gas cleaning system 150, draw vacuum into the transition chamber 140, and after reaching the set vacuum value, fill it with protective gas, and repeatedly perform the vacuum drawing-filling process on the transition chamber 140 until the preset vacuum value of the glove box 130 is reached, so that the vacuum value of the glove box 130 is equal to the vacuum value of the transition chamber 140, and then open the baffle 142 close to the glove box 130, put the ternary lithium powder in step S50 into the transition chamber 140, and then cover the baffle 142; tighten the bolts to seal the transition chamber 140, and then open the protective gas cleaning system 150, fill nitrogen into the transition chamber 140 to reach the pressure outside the transition chamber 140, so that the pressure inside and outside the transition chamber 140 is balanced, and then open the baffle 142 on the other side of the transition chamber 140 to take out the ternary lithium powder.

[0211] In the embodiment of the present invention, the ternary lithium powder manufactured by the ternary lithium powder manufacturing equipment and the manufacturing method thereof has the effect of environmental protection during the manufacturing process. Except for the silo and some screw feeding and conveying components, the rest are placed in a protected glove box. The powder and molten salt in the box will not volatilize into the environment, and the harm to the human body and environmental pollution are far less than the production method in the prior art. It solves the problem that the liquid molten salt is very volatile and harmful to the human body and the environment. At the same time, it realizes the automation of the production of ternary lithium powder, reduces the labor intensity of producing ternary lithium powder, and improves the production efficiency of ternary lithium powder.

[0212] In the first embodiment of the present invention, a silo, a glove box, a screw feeding and conveying component, an electric butterfly valve, a heating furnace, a reactor, a distributor cooling device, a mesh belt conveying and cooling device, a crushing device, a collecting device and a main control system are designed. As long as the powder is added to the silo and mixed evenly, it is fed into the reactor and the heating furnace containing liquid molten salt at a specific speed through the screw feeding and conveying component to achieve rapid melting of the powder by the molten salt. After the liquid level in the reactor exceeds the specified height, the ternary lithium liquid molten salt flows into the distributor through the overflow branch pipe and then cools on the drum surface, falls on the mesh belt conveying and cooling device, falls into the crushing device at the top of the conveyor, and finally, after crushing, it is manually collected. The automation of the production process is realized, and only manual feeding and collection are required in the production process, saving a lot of labor costs; compared with the existing method, the present invention has the characteristics of low comprehensive cost, small total footprint, low total power consumption, etc., reduces the labor intensity of producing ternary lithium powder, and improves the production efficiency of ternary lithium powder.

[0213] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A ternary lithium powder manufacturing device, characterized in that: include: A silo, in which a ternary lithium mixed powder is placed; An electric butterfly valve is fixedly connected to the electric butterfly valve below the silo; The discharge of the ternary lithium mixed powder from the silo is controlled by the electric butterfly valve; A feed conveying component is fixedly connected to the inlet of the feed conveying component at the outlet of the electric butterfly valve; the outlet of the feed conveying component is arranged above the inlet of the heating component; the ternary lithium mixed powder is heated by the heating component to melt the ternary lithium mixed powder and enter the distributor cooling device by overflow; The distributor cooling device performs granulation cooling through a distributor, a mesh belt conveyor of an integrated cooling system is arranged below the distributor cooling device, and a crushing device is arranged below the outlet of the mesh belt conveyor of the integrated cooling system; A main control system, wherein the main control system is electrically connected to the electric butterfly valve, the feed conveying component, the heating component, the distributor cooling device, and the mesh belt conveying device of the integrated cooling system; The silo is configured as a double-layer structure, and a vacuum cleaning system is connected to the outer layer of the silo. The silo also includes: A loading bin is provided on the upper part of the loading bin, and the loading bin is a cylindrical structure; a vacuum exhaust port is provided on the upper side of the loading bin, and is connected to a vacuum cleaning system; A lower material bin is welded to the lower part of the upper material bin, and the lower material bin is a conical structure; the upper cylinder wall of the lower material bin and the lower cylinder wall of the upper material bin are welded into an integral structure; A silo cover is provided above the upper silo, the upper silo and the silo cover are movably connected by a pin shaft or a movable joint, and an air inlet is provided above the silo cover; the silo is connected to the upper silo through the air inlet; The feed conveying component further comprises: A motor is fixed at one end of the feed conveying component; A motor reducer, wherein the output shaft of the motor is connected to the input end of the motor reducer arranged on the same axis; The gear connector has one end of the gear connector connected to the output end of the motor reducer; the other end of the gear connector is connected to the screw head of the screw; A screw rod, which is connected to a motor reducer through a gear connector; A screw barrel, in which the screw is arranged; the screw barrel is connected to a motor reducer; A magnetic fluid seal is arranged between the screw and the screw barrel, the magnetic fluid seal penetrates into the screw and is fixed on the side surface of one end of the screw barrel; The heating component further comprises: A heating furnace, the heating furnace is fixed below the heating component; the heating furnace is used to heat the ternary lithium mixed powder; A reaction kettle is movably connected to the heating furnace above the reaction kettle; the reaction kettle moves along the longitudinal direction of the heating furnace, and the bottom of the reaction kettle and the inlet of the heating furnace are arranged on the same axis; Thermal insulation structure, covering the outside of the heating furnace and the reactor with a thermal insulation structure; Thermocouple: a thermocouple is arranged in the heat preservation structure and is attached to the heating furnace to measure the temperature of the heating furnace; An overflow branch pipe is arranged on the side of the heating furnace, the overflow branch pipe passes through the insulation structure, and the overflow branch pipe extends into the inlet of the distributor cooling device; The outer surface of the overflow branch pipe and the outer surface of the reaction kettle are covered with heating components for heat preservation; The distributor cooling device further comprises: A distributor is fixed above the distributor cooling device, and a liquid guide needle is arranged above the distributor, and the size and speed of the droplets of the ternary lithium mixed powder in the molten state are controlled by the stroke and thickness of the liquid guide needle; A cooling drum is arranged below the distributor, a cooling water pipe is fixed inside the cooling drum, and the cooling water pipe extends into the cavity inside the cooling drum; a water cooling system is connected to the cooling water pipe to cool the cooling drum; The mesh belt conveyor device of the integrated cooling system is in the shape of a slide, and the mesh belt conveyor device of the integrated cooling system further comprises: A metal mesh belt is arranged on the conveying surface of the mesh belt conveying device of the integrated cooling system; A driving roller is arranged above the mesh belt conveyor of the integrated cooling system; A passive roller is arranged below the mesh belt conveyor device of the integrated cooling system; The metal mesh belt circulates between the driving roller and the passive roller to transport the mixed ternary lithium mixed powder particles; A cooling device is arranged inside the metal mesh belt, a cooling water loop is formed in the cooling device through pipelines, and the cooling device cools the metal mesh belt and the ternary lithium mixed powder particles mixed on the metal mesh belt; The metal mesh belt frame, the metal mesh belt and the cooling device are all fixed on the metal mesh belt frame; the metal mesh belt frame is also in the shape of a slide, and a discharge plate is fixed on the metal mesh belt frame at the outlet of the metal mesh belt; The pulverizing device is a blade pulverizer, and further comprises: A rotating cutting drum is arranged in the middle of the pulverizing device; A cutting blade is fixed on the rotating cutting drum; A discharging plate on the mesh belt conveyor device of the integrated cooling system is arranged above the pulverizing device; A collecting device is provided below the pulverizing device; The main control system further includes: A PLC device is used as the main control device of the main control system; the PLC device is electrically connected to the electric butterfly valve to control the switch of the electric butterfly valve; Touch screen, the PLC device is connected to the touch screen for communication, and the touch screen is used to set the manufacturing parameters of the ternary lithium powder; The first frequency converter, the PLC device is electrically connected to the first frequency converter; the first frequency converter is electrically connected to the motor in the feed conveying component, and the first frequency converter controls the speed of the motor and the speed of the feed conveying component; A temperature controller is electrically connected to the heating components and thermocouples on the heating furnace, the reaction kettle, and the overflow branch pipe in the heating component, and the temperature controller controls the temperature of the heating furnace, the reaction kettle, and the overflow branch pipe; A second frequency converter, the PLC device is electrically connected to the second frequency converter, and is used to control the speed of the cooling drum of the distributor cooling device; A third frequency converter, the PLC device is electrically connected to the third frequency converter, and is used to control the conveying speed of the metal mesh belt in the mesh belt conveying device of the integrated cooling system; The contactor, the PLC device is electrically connected to the contactor in the pulverizing device, and is used to control the start and stop of the blade pulverizer; The ternary lithium powder manufacturing equipment also includes: A silo frame, on which the silo, the electric butterfly valve and part of the feed conveying components are arranged; A glove box is connected to one side of the silo rack, the outlet of the feed conveying component is arranged in the glove box, and the heating component, the distributor cooling device, the mesh belt conveying device of the integrated cooling system, the crushing device and the collecting device are all arranged in the glove box; The glove box is connected to a vacuum cleaning system, which evacuates the glove box; A transition chamber is provided on the other side of the glove box; a protective gas cleaning system is connected to the transition chamber, and the protective gas cleaning system is used to balance the pressure of the transition chamber on the glove box; An air conditioning system is provided on the glove box to cool the temperature inside the glove box; A water cooling system is connected to the distributor cooling device and the mesh belt conveyor of the integrated cooling system respectively.

2. The ternary lithium powder manufacturing equipment according to claim 1, characterized in that: The glove box further comprises: Glove operation holes: a plurality of glove operation holes are arranged on both sides of the glove box; the glove operation holes are used to operate the ternary lithium powder manufacturing equipment.

3. The ternary lithium powder manufacturing equipment according to claim 1, characterized in that: An outlet is provided on each side of the transition chamber, a baffle is provided on the outlet, and fixed to the outlet with fixing bolts; a protective gas cleaning system is connected to the transition chamber to balance the air pressure on both sides; a pressure gauge is provided on the transition chamber to observe the pressure on the transition chamber.

4. The ternary lithium powder manufacturing equipment according to claim 1, characterized in that: A plurality of cooling water circuits are arranged on the water cooling system, which are respectively connected to the cooling drum in the distributor cooling device and to the cooling device in the mesh belt conveyor of the integrated cooling system.

5. A method for producing ternary lithium powder, characterized in that: The steps include: Step S10: Turn on the power: Turn on the power of the ternary lithium powder manufacturing equipment according to any one of claims 1 to 4, and after the main control system is started, proceed to step 20; Step S20: Setting parameters: Setting parameters on the touch screen of the main control system of the ternary lithium powder manufacturing equipment. The set parameters include: Set the number of silo gas washing, gas washing time and required vacuum value of the silo; Setting the rotational speed per minute of the screw in the feed conveying component; Set the heating temperature of each section of the heating furnace, reactor and overflow branch pipe in the heating components; Setting the conveying speed of the metal mesh belt in the mesh belt conveyor of the integrated cooling system; Setting the speed of the rotating cutting drum in the comminution device; Turn on the vacuum cleaning system and start to evacuate the glove box; set the vacuum extreme value required for the material bin and the vacuum extreme value of the glove box on the vacuum cleaning system respectively; until the vacuum extreme value reaches the vacuum extreme value required for the material bin and the vacuum value of the glove box; Turn on the protective gas cleaning system, set the pressure value of the nitrogen filling, and prepare the protective gas cleaning system; Turn on the water cooling system, set the cooling water temperature, and the water cooling system starts cooling until the preset cooling water temperature is reached and then stands by; After the heating temperatures of the heating furnace, reactor, and overflow branch pipe in the heated component reach the preset values, the process proceeds to step S30; Step S30: Gas washing of the silo: put the mixed ternary lithium raw material into the silo, and lock the silo cover; turn on the vacuum cleaning system, the vacuum cleaning system extracts vacuum on the ternary lithium raw material, and after reaching the set vacuum value, fill it with protective gas, and repeatedly perform the vacuum pumping-filling process of the silo, and perform gas washing according to the three parameters of gas washing number, gas washing time, and vacuum value required by the silo until the vacuum value of the silo and the glove box is the same; enter step S40: Step S40: Material conveying: the main control system automatically turns on the motor in the feed conveying component, and the screw starts to feed the material to the heating furnace; until the speed at which the heating furnace discharges the molten salt of ternary lithium, the speed at which the molten salt of ternary lithium in the distributor cooling device drops, and the speed at which the ternary lithium powder is conveyed by the feed conveying component reach a balance; The mesh belt conveyor, water cooling system and pulverizing device of the integrated cooling system are automatically turned on, and the cooled ternary lithium particles are conveyed to the pulverizing device through the mesh belt conveyor of the integrated cooling system until the speed at which the mesh belt conveyor of the integrated cooling system conveys the cooled ternary lithium particles matches the pulverizing speed of the pulverizing device. The ternary lithium particles cooled by the pulverizing device are pulverized until the ternary lithium powder has the required size, and then enter the collecting device, and then enter step 50: Step S50: Collection and bagging: In the collection device, the ternary lithium powder described in step S40 is collected and bagged, and then the process proceeds to step S60: Step S60: Taking materials: Manually open the protective gas cleaning system, draw vacuum into the transition chamber, and after reaching the set vacuum value, fill it with protective gas. Repeat the vacuuming and filling process of the transition chamber until the preset vacuum value of the glove box is reached, so that the atmosphere of the glove box is the same as the atmosphere of the transition chamber, then open the baffle close to the glove box, put the ternary lithium powder described in step S50 into the transition chamber, and then cover the baffle; tighten the bolts to seal the transition chamber, and then open the protective gas cleaning system, fill the transition chamber with nitrogen to reach the pressure outside the transition chamber, so that the pressure inside and outside the transition chamber is balanced, and then open the baffle on the other side of the transition chamber to take out the ternary lithium powder.

6. The method for producing ternary lithium powder according to claim 5, characterized in that: The heating temperature of each section of the heating furnace, the reaction kettle, and the overflow branch pipe in the heating component in step S20 reaches a preset value, and further includes the following sub-steps: Step S21: determine whether the temperature of the heating furnace, the reaction kettle, and the overflow branch pipe sections in the heating component is lower than the preset value of the heating furnace, the reaction kettle, and the overflow branch pipe sections in the heating component; if it is lower than the preset value, enter step S22; if it is equal to or higher than the preset value, enter step S23; and loop between step S22 and step S23; Step S22: heating, the main control system controls the temperature controller to output power to the heating furnace, the reaction kettle, and the heating components on the overflow branch pipe in the heating components; Step S23: the main control system controls the temperature controller to reduce the power of the heating furnace, the reaction kettle and the heating components on the overflow branch pipe in the heating component to maintain a constant temperature state.

7. The method for producing ternary lithium powder according to claim 5, characterized in that: The falling speed of the molten salt of ternary lithium discharged from the heating furnace in step S40 matches the speed of the ternary lithium powder conveyed by the feed conveying component, and further includes the following sub-steps: Step S41: determining speed balance, determining whether the speed of the ternary lithium molten salt discharged from the heating furnace, the speed of the ternary lithium molten salt droplets falling in the distributor cooling device, and the speed of the ternary lithium powder conveyed by the feed conveying component are balanced; If ternary lithium molten salt droplets overflow from the distributor in the distributor cooling device, the process proceeds to step S42; If there is unmelted ternary lithium powder in the heating furnace, the process goes to step S43; If there is unmelted ternary lithium powder in the heating furnace, and ternary lithium molten salt droplets overflow from the distributor in the distributor cooling device, then the process goes to step S44; If there is no unmelted ternary lithium powder in the heating furnace, and no ternary lithium molten salt droplets overflow from the distributor in the distributor cooling device, then the process proceeds to step S45; Step S42: decelerating, in which the main control system reduces the rotation speed of the screw in the feed conveying component, thereby reducing the speed of the ternary lithium powder being conveyed; Step S43: increasing the preset value, and increasing the preset temperature value of the heating furnace in the main control system; Step S44: raising the temperature and lowering the speed, raising the preset temperature value of the heating furnace in the main control system and lowering the rotation speed of the screw in the feeding and conveying component in the main control system, lowering the speed of the ternary lithium powder being conveyed, or entering step S42 or entering step S43; Step S45: Increasing the rotation speed of the screw in the feed conveying component in the main control system to speed up the conveying speed of the ternary lithium powder; Until the speed at which the ternary lithium molten salt is discharged from the heating furnace, the speed at which the ternary lithium molten salt droplets fall in the distributor cooling device, and the speed at which the ternary lithium powder is transported by the feed conveying component reach a balance.

8. The method for producing ternary lithium powder according to claim 7, characterized in that: The speed at which the mesh belt conveyor device of the integrated cooling system in step S40 feeds the cooled ternary lithium particles matches the pulverizing speed of the pulverizing device, and further includes the following sub-steps: Step S46: determining the speed at which the mesh belt conveyor device of the integrated cooling system delivers the cooled ternary lithium particles and the pulverizing speed of the pulverizing device; If the cooled ternary lithium particles fed by the mesh belt conveyor of the integrated cooling system are deposited on the pulverizing device, then step S47 is entered: If the cooled ternary lithium particles sent by the mesh belt conveyor of the integrated cooling system are not accumulated on the pulverizing device, the process proceeds to step S45: Step S47 gear connector: reduce the speed of the metal mesh belt on the mesh belt conveyor of the integrated cooling system.

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