A device and method for low-temperature decomposition of lithium battery electrolyte

Abstract

This invention discloses a device and method for low-temperature decomposition of lithium battery electrolyte. The device includes a vacuum feeding section, a crushing and screening section, and a circulating gas supply section. The vacuum feeding section includes a vacuum chamber with an openable and closable inlet and outlet. The crushing and screening section includes a crushing chamber and a screening chamber. The upper and lower ends of the crushing chamber are connected to the outlet of the vacuum chamber and the screening chamber, respectively, for crushing the material. This invention, through the vacuum feeding section, crushing and screening section, and circulating gas supply section, fills the battery with inert gas during crushing, forming an internal circulation. This reduces the consumption of inert gas and maintains the stability of battery crushing. Furthermore, the vibrating screen and the inert gas flowing and circulating from top to bottom promote the separation of the electrolyte from the battery fragments as much as possible during crushing, reducing the amount of electrolyte adhering to the battery fragments, thereby reducing the time required for low-temperature baking and improving the overall efficiency of low-temperature decomposition of lithium battery electrolyte.

Description

Technical Field

[0001] This invention relates to the field of lithium battery electrolyte recycling, and specifically to a device and method for low-temperature decomposition of lithium battery electrolyte. Background Technology

[0002] Low-temperature decomposition of lithium battery electrolyte refers to drying and evaporating the lithium battery electrolyte through low-temperature baking. Before low-temperature baking, the battery needs to be crushed and then transported to the low-temperature baking area for low-temperature baking and decomposition of the electrolyte. For example, Chinese Utility Model Patent 202122151175.0 discloses a device for crushing and recovering electrolyte, including a crusher housing and a feed inlet; the crusher housing is equipped with a crushing mechanism, a screening mechanism, an inert gas jetting mechanism, and a crushed material collection mechanism; the crushed material collection mechanism is equipped with a scraper conveyor for outputting the crushed material to the low-temperature baking oven and an electrolyte drain hole connected to the condensation recovery system for discharging the electrolyte.

[0003] The existing technology described above has the following drawbacks: Since the crushing mechanism is in an open state, nitrogen gas escapes during use, and continuous crushing consumes a large amount of nitrogen. Furthermore, relying on the natural dripping of the electrolyte fragments is ineffective, as a significant amount of electrolyte still adheres to the battery fragments. Therefore, to reduce the amount of adhered electrolyte and thus shorten the time required for subsequent low-temperature baking and decomposition, a key technical problem to be solved is how to internally circulate nitrogen and promote the separation of electrolyte from battery fragments. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a low-temperature decomposition device for lithium battery electrolyte, which solves the technical problem of how to internally circulate nitrogen and promote the separation of electrolyte and battery fragments in the prior art.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a device for low-temperature decomposition of lithium battery electrolyte, comprising:

[0007] The vacuum feeding section includes a vacuum chamber and has an openable and closable feed port and discharge port;

[0008] A crushing and screening unit includes a crushing chamber and a screening chamber. The upper and lower ends of the crushing chamber are connected to the feed inlet of the vacuum chamber and the screening chamber, respectively, for crushing materials. The screening chamber is equipped with a downwardly inclined vibrating screen.

[0009] The circulating gas supply unit includes a pump body and a diversion pipe. The crushing chamber and the screening chamber are filled with inert gas. The inlet end of the pump body is connected to the screening chamber and is located below the vibrating screen. The outlet end of the pump body is connected to the diversion pipe, and the other end of the diversion pipe is connected to and communicates with the crushing chamber, forming an inert gas flow channel that circulates internally from top to bottom.

[0010] In some embodiments, a feeding section is also included, which includes a feeding hopper having an openable and closable upper cover and a lower cover. The feeding hopper is disposed on the screening chamber and extends upward into it, located at the downward inclined end of the vibrating screen.

[0011] In some embodiments, a low-temperature baking section is further included, which includes a baking chamber, an annular track, and a vibratory plate. The annular track is disposed on the inner bottom wall of the baking chamber, and a driving member is disposed between the vibratory plate and the annular track for driving the vibratory plate to move along the annular track. The number of vibratory plates is multiple and they are evenly distributed on the annular track.

[0012] In some embodiments, a flipping component is further provided between the vibratory feeder and the driving component for driving the vibratory feeder to flip to the side to unload the material.

[0013] In some embodiments, a receiving part is provided directly below the feeding hopper, and a discharging part is provided in the opposite direction of the movement of the vibrating plate and adjacent to the receiving part. A discharge port is provided at the bottom of the baking chamber, and the discharge port is located below the discharging part.

[0014] In some embodiments, a preheating structure is also included, comprising a circulating pump and a heat exchange tube. The circulating pump is disposed on the baking chamber, with one end connected and communicating with the baking chamber and the other end connected and communicating with the heat exchange tube, which extends to the screening chamber and the crushing chamber.

[0015] In some embodiments, the bottom of the hopper is narrowed and rectangular, and the vibratory plate is square in shape, with a length and width greater than the length and width of the bottom of the hopper, respectively.

[0016] In some embodiments, the vibratory feeder has four sides that extend upwards with shielding edges.

[0017] In some embodiments, the feeding section further includes a suction pump, one end of which is connected to and communicates with the feeding hopper, and the other end of which is connected to and communicates with the screening chamber.

[0018] Secondly, the present invention also provides a method for low-temperature decomposition of lithium battery electrolyte, performed according to the apparatus for low-temperature decomposition of lithium battery electrolyte as described above, comprising the following steps:

[0019] S1. Open the loading port of the vacuum chamber, insert the lithium battery, wait until the set capacity is reached, close the loading port, evacuate the vacuum, and then open the unloading port.

[0020] S2. The lithium battery is crushed, and the pump is started at the same time to circulate the internal inert gas from top to bottom.

[0021] S3. The broken battery fragments shake on the top of the vibrating screen and move toward the downward-sloping end;

[0022] S4. The hopper holds and retains the battery fragments, the upper cover is closed, and the lower cover is opened to feed the battery fragments into the low-temperature baking section.

[0023] S5. The vibratory feeder moves along the circular track at the receiving section to receive battery fragments, making them spread flat on the vibratory feeder. The battery fragments are then shaken to make them evenly distributed and to avoid one side being tightly attached to the feeder surface.

[0024] S6. Move the vibratory plate along the circular track to bake in the baking chamber. When baking reaches the unloading section, flip the vibratory plate with the flipping device to unload the material and prepare it to enter the receiving section for the next receiving. Repeat this process to form a cycle of receiving and baking.

[0025] Compared with the prior art, the low-temperature decomposition device for lithium battery electrolyte provided by the present invention, through the vacuum feeding section, crushing and screening section and the circulating gas supply section, fills the battery with inert gas during the crushing process and forms an internal circulation, reducing the consumption of inert gas and maintaining the stability of the battery crushing. Furthermore, through the vibrating screen and the inert gas flowing and circulating from top to bottom, the electrolyte is made to separate from the battery fragments as much as possible during the crushing process, reducing the amount of electrolyte adhering to the battery fragments, thereby reducing the time required for low-temperature baking and improving the overall efficiency of low-temperature decomposition of lithium battery electrolyte. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the low-temperature decomposition device for lithium battery electrolyte provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the preheating structure provided in an embodiment of the present invention;

[0028] Figure 3 This is a three-dimensional structural diagram of the annular track and vibratory plate provided in an embodiment of the present invention;

[0029] Figure 4 This is a top view of the structure of the annular track and vibratory plate provided in the embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Vacuum feeding section; 11. Vacuum chamber;

[0032] 2. Crushing and screening section; 21. Crushing chamber; 22. Screening chamber; 23. Vibrating screen;

[0033] 3. Circulating air supply unit; 31. Pump body; 32. Diverter pipe;

[0034] 4. Feeding section; 41. Feeding hopper; 401. Suction pump;

[0035] 5. Low-temperature baking section; 51. Baking chamber; 52. Circular track; 53. Vibratory feeder; 54. Tilting component; 501. Receiving section; 502. Discharging section; 503. Discharge port;

[0036] 6. Preheating structure; 61. Circulating pump; 62. Heat exchange tube. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] To address the technical problem of how to internally circulate nitrogen and promote the separation of electrolyte and battery fragments, this invention provides a device and method for low-temperature decomposition of lithium battery electrolyte, which can achieve internal nitrogen circulation and promote the separation of electrolyte and battery fragments.

[0039] It should be noted that the low-temperature decomposition lithium battery electrolyte device described in this invention is used for, but not limited to, the decomposition of lithium battery electrolyte. For ease of explanation, this invention will only use the application of the low-temperature decomposition lithium battery electrolyte device in the decomposition of lithium battery electrolyte as an example. The principle of the low-temperature decomposition lithium battery electrolyte device in other types of equipment is essentially the same as that in the decomposition of lithium battery electrolyte, and will not be described in detail here.

[0040] Please see Figure 1 , Figure 1This is a schematic diagram of a low-temperature decomposition lithium battery electrolyte device according to an embodiment of the present invention. The low-temperature decomposition lithium battery electrolyte device includes a vacuum feeding section 1, a crushing and screening section 2, and a circulating gas supply section 3. The vacuum feeding section 1 includes a vacuum chamber 11 with an openable and closable feed port and a discharge port. When the feed port is open and the discharge port is closed, it is in the feeding state; when both the feed port and the discharge port are closed, it is in the vacuuming state; and when the discharge port is open and the feed port is closed, it is in the injection state. The crushing and screening section 2 includes a crushing and screening section. The crushing chamber 21 and the screening chamber 22 are connected at their upper and lower ends to the feed inlet of the vacuum chamber 11 and the screening chamber 22, respectively, for crushing materials. In the feeding state of the vacuum chamber 11, the battery is conveyed into the crushing chamber 21. Several pairs of crushing rollers are installed in the crushing chamber 21 for crushing the battery. The crushed battery fragments and electrolyte fall downwards. The screening chamber 22 is equipped with a downward-sloping vibrating screen 23. The battery fragments fall onto the vibrating screen 23 and move along the slope... The electrolyte slides down to the lower right and passes through the vibrating screen 23 to be collected below. Vibration promotes adhesion between the electrolyte and battery fragments, reducing the amount of electrolyte adhering to the fragments and thus reducing the time required for subsequent low-temperature baking. The circulating gas supply unit 3 includes a pump body 31 and a diverter pipe 32. The crushing chamber 21 and the screening chamber 22 are filled with inert gas. The inlet end of the pump body 31 is connected to the screening chamber 22 and located below the vibrating screen 23. The outlet end of the pump body 31 is connected to... The diversion pipe 32 is connected, and the other end of the diversion pipe 32 is connected and communicated with the crushing chamber 21 to form an inert gas flow channel that circulates internally from top to bottom. The inert gas passes through the vibrating screen 23 from top to bottom to flush the battery fragments, which can further promote the separation of electrolyte from battery fragments. Moreover, under the vibration, the base surface of battery fragments and inert gas is more fully flushed, and the flushing effect is more obvious. In particular, under the internal circulation, the use of inert gas can be effectively reduced, reducing consumption and saving energy and increasing efficiency.

[0041] In this embodiment, the feed inlet and discharge outlet can be closed and opened using electrically controlled valves, or other cover plates with opening and closing structures can be used to achieve a sealing effect; the vibrating screen 23 can adopt a structure of a fixed frame, spring, vibrating motor and screen, with the spring set on the fixed frame, the screen set on the top of the spring, and the vibrating motor used to drive the screen to vibrate; the inert gas can be nitrogen to avoid combustion during crushing.

[0042] In one embodiment, to prevent nitrogen leakage during feeding, please refer to [reference needed]. Figure 1The low-temperature decomposition lithium battery electrolyte device also includes a feeding section 4, which includes a feeding hopper 41 with an openable and closable upper cover and a lower cover. The feeding hopper 41 is located on the screening chamber 22, specifically in the lower right part, and extends upward into it. It is located at the downward inclined end of the vibrating screen 23 and is used to receive battery fragments and transfer and transport them to the subsequent low-temperature baking.

[0043] In this embodiment, both the upper and lower cover plates adopt a lateral opening and closing method with the sealing plate moving laterally; the upper cover plate is lower than the top of the hopper 41, so that there is still a certain space above it to accommodate battery fragments; the lateral movement of the lower cover plate can control the size of the opening of the hopper 41.

[0044] In one embodiment, in order to decompose the adhering electrolyte for low-temperature baking immediately after crushing, please refer to [link to relevant documentation]. Figure 1 The low-temperature decomposition device for lithium battery electrolyte also includes a low-temperature baking section 5, which includes a baking chamber 51, an annular track 52, and a vibrating plate 53. The annular track 52 is disposed on the inner bottom wall of the baking chamber 51. A driving component is disposed between the vibrating plate 53 and the annular track 52 to drive the vibrating plate 53 to move along the annular track 52. There are multiple vibrating plates 53, which are evenly distributed on the annular track 52. By driving the vibrating plates to move along the annular track 52, battery fragments are collected in sequence.

[0045] In this embodiment, the vibratory plate 53 can adopt a structure of a base plate, a spring, a vibratory motor, and a plate body. The spring is set on the base plate, the plate body is set on the top of the spring, and the vibratory motor is used to drive the plate body to vibrate, so that the battery fragments shake on the plate body. The driving component can be a pair of rollers driven by a motor that fit against the left and right side walls of the track or other mechanisms that can move along the track, so as to achieve the purpose of driving the vibratory plate 53 to move along the track.

[0046] Understandably, each time the hopper 41 is opened, a corresponding vibratory plate 53 receives material, and then the vibratory plate 53 is moved to replace it to receive material for the next feeding from the hopper 41.

[0047] In one embodiment, for unloading battery fragments from the vibratory feeder 53, please refer to... Figure 1 A flipping component 54 is also provided between the vibratory plate 53 and the driving component, which is used to drive the vibratory plate 53 to flip to the side to pour materials.

[0048] Understandably, the flipping component 54 adopts a structure of a fixed plate, a flipping shaft, and a flipping motor. The fixed plate is connected to the driving component, the flipping motor is mounted on the fixed plate, its output shaft is connected to the flipping shaft, and the flipping shaft is connected to the vibrating plate 53. The flipping motor drives the flipping shaft and the vibrating plate 53 to rotate, thus forming a flip. Alternatively, the flipping component 54 can also adopt a structure of a fixed plate and a telescopic push rod. The two ends of the telescopic push rod are hinged to the fixed plate and the vibrating plate 53. By extending the telescopic push rod, the vibrating plate 53 is pushed to rotate around the hinge.

[0049] In one embodiment, in order to lay the battery flat and fully bake it at low temperature in the baking chamber 51, a receiving part 501 is provided directly below the feeding hopper 41, and a discharging part 502 is provided adjacent to the receiving part 501 and in the opposite direction of the movement of the vibrating plate 53. The vibrating plate 53 below the receiving part 501 is used to receive the material, moves around the annular track 52 once, and then moves to the discharging part 502 to discharge the material, so as to fully bake it at low temperature in the baking chamber 51. A discharge port 503 is provided at the bottom of the baking chamber 51. The discharge port 503 is located below the discharging part 502. The vibrating plate 53 is flipped towards the discharge port 503 by the flipping member 54 to discharge the material. After discharging, it moves back to the receiving part 501 for a second receiving and baking movement.

[0050] Understandably, the hopper 41 discharges material downwards at a constant speed, and the vibrating plate 53 moves at a constant speed to achieve a certain level of flatness. In addition, the vibration of the vibrating plate 53 can help to disperse the battery fragments and make them more evenly distributed.

[0051] In one embodiment, for preheating of the battery fragments between low-temperature baking processes, please refer to... Figure 2 The low-temperature decomposition device for lithium battery electrolyte also includes a preheating structure 6, which includes a circulating pump 61 and a heat exchange tube 62. The circulating pump 61 is installed on the baking chamber 51, with one end connected to and communicating with the baking chamber 51 and the other end connected to and communicating with the heat exchange tube 62. The heat exchange tube 62 extends to the screening chamber 22 and the crushing chamber 21. The circulating pump 61 draws in air to promote airflow and serves as a heat medium, which flows to the heat exchange tube 62 to cool down the drawn decomposition liquid and heat up the screening chamber 22 and the crushing chamber 21, thus preheating the battery fragments, reducing the time required to heat up to the baking temperature, and shortening the time required for low-temperature baking.

[0052] Understandably, the circulation pump 61 will also promote full contact between hot air and battery fragments, improving drying efficiency. In addition, the heat exchange tube 62 is used to connect to the condenser to condense and collect the electrolyte.

[0053] In one embodiment, in order to control the effect of spreading the fragments, the bottom of the hopper 41 is narrowed and rectangular, and the vibrating plate 53 is square in shape, with its length and width being greater than the length and width of the bottom of the hopper 41, respectively. The hopper 41 feeds the fragments downward, and the vibrating plate 53 moves along the length direction to form a spread.

[0054] Furthermore, to prevent battery fragments from falling off during vibration, the four sides of the vibrating disc 53 have upward-extending shielding edges.

[0055] In one embodiment, in order to reduce nitrogen loss, the feeding section 4 further includes a suction pump 401, one end of which is connected to and communicates with the feeding hopper 41, and the other end is connected to and communicates with the screening chamber 22, thereby drawing back nitrogen.

[0056] This invention also provides a method for low-temperature decomposition of lithium battery electrolyte, comprising the following steps:

[0057] S1. Open the loading port of vacuum chamber 11, insert lithium batteries, reach the set capacity, close the loading port, evacuate the vacuum, and then open the unloading port.

[0058] S2. The lithium battery is crushed, and the pump 31 is started at the same time to circulate the internal inert gas from top to bottom.

[0059] S3. The broken battery fragments shake on the vibrating screen 23 and move toward the downward inclined end;

[0060] S4. The hopper 41 holds and retains the battery fragments, closes the upper cover, and then opens the lower cover to feed the battery fragments into the low-temperature baking section 5.

[0061] S5. The vibratory plate 53 receives the battery fragments by moving along the circular rail 52 in the receiving section 501, so that they are laid flat on the vibratory plate 53, and then the battery fragments are shaken to make them evenly distributed and to avoid one side being tightly attached to the plate surface.

[0062] S6. Move the vibratory plate 53 along the circular track 52 to bake in the baking chamber 51. When baking reaches the unloading section 502, flip the vibratory plate 53 with the flipping part 54 to unload the material and prepare it to enter the receiving section 501 for the next receiving. Repeat this process to form a cycle of receiving and baking.

[0063] Furthermore, during the low-temperature baking process, the circulating pump 61 draws to create a negative pressure, collects the evaporated electrolyte, and transports it to the condenser via the heat exchange tube 62 for condensation and collection of the electrolyte.

[0064] To better understand this invention, the following is combined with... Figures 1 to 4The technical solution of the present invention is described in detail as follows: The feed port of the vacuum chamber 11 is opened, a battery is added, the feed port is closed, a vacuum is drawn, the discharge port is opened, the material is discharged and crushed in the crushing chamber 21. After crushing, the material falls into the screening chamber 22, where it is vibrated on the vibrating screen 23 and moves towards the inclined end to promote electrolyte separation. Finally, it falls into the discharge hopper 41. The upper cover is closed, nitrogen is drawn back to the screening chamber 22, the lower cover is opened again, and the material is introduced into the vibrating disk 53 on the receiving part 501. The vibrating disk 53 follows... The material is moved to spread the battery fragments flat, and the lower cover is closed. Following the above principle, after the vibratory plate 53 is replaced, the next wave of battery fragments is discharged. When the vibratory plate 53 receives the material and moves one circle to the discharge section 502, the flipping part 54 flips the material from the vibratory plate 53 to the discharge port 503 for discharge. During baking, the circulating pump 61 is started to draw in air and evaporated electrolyte, and transports it to the condenser through the heat exchange tube 62 for condensation. During the flow of heat exchange tube 62, the screening chamber 22 and the crushing chamber 21 are also preheated.

[0065] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A device for low-temperature decomposition of lithium battery electrolyte, characterized in that, include: The vacuum feeding section includes a vacuum chamber and has an openable and closable feed port and discharge port; A crushing and screening unit includes a crushing chamber and a screening chamber. The upper and lower ends of the crushing chamber are connected to the feed inlet of the vacuum chamber and the screening chamber, respectively, for crushing materials. The screening chamber is equipped with a downwardly inclined vibrating screen. The circulating gas supply unit includes a pump body and a diversion pipe. The crushing chamber and the screening chamber are filled with inert gas. The inlet end of the pump body is connected to the screening chamber and is located below the vibrating screen. The outlet end of the pump body is connected to the diversion pipe, and the other end of the diversion pipe is connected to and communicates with the crushing chamber, forming an inert gas flow channel that circulates internally from top to bottom.

2. The apparatus for low-temperature decomposition of lithium battery electrolyte according to claim 1, characterized in that, It also includes a feeding section, which includes a feeding hopper having an openable and closable upper cover and a lower cover. The feeding hopper is disposed on the screening chamber and extends upward into it, located at the downward inclined end of the vibrating screen.

3. The apparatus for low-temperature decomposition of lithium battery electrolyte according to claim 2, characterized in that, It also includes a low-temperature baking section, which includes a baking chamber, a circular track, and a vibrating plate. The circular track is disposed on the inner bottom wall of the baking chamber. A driving component is disposed between the vibrating plate and the circular track to drive the vibrating plate to move along the circular track. There are multiple vibrating plates, which are evenly distributed on the circular track.

4. The apparatus for low-temperature decomposition of lithium battery electrolyte according to claim 3, characterized in that, A flipping component is also provided between the vibratory feeder and the driving component, which is used to drive the vibratory feeder to flip to the side to pour materials.

5. The apparatus for low-temperature decomposition of lithium battery electrolyte according to claim 4, characterized in that, A receiving section is provided directly below the feeding hopper, and a discharge section is provided adjacent to the receiving section in the opposite direction of the movement of the vibrating plate. A discharge port is provided at the bottom of the baking chamber, and the discharge port is located below the discharge section.

6. The apparatus for low-temperature decomposition of lithium battery electrolyte according to claim 3, characterized in that, It also includes a preheating structure, which includes a circulating pump and a heat exchange tube. The circulating pump is installed on the baking chamber, with one end connected and communicating with the baking chamber and the other end connected and communicating with the heat exchange tube, which extends to the screening chamber and the crushing chamber.

7. The apparatus for low-temperature decomposition of lithium battery electrolyte according to claim 3, characterized in that, The bottom of the hopper is narrowed and rectangular, and the vibrating plate is square in shape, with a length and width greater than the length and width of the bottom of the hopper, respectively.

8. The apparatus for low-temperature decomposition of lithium battery electrolyte according to claim 3, characterized in that, The vibratory plate has shielding edges extending upwards on all four sides.

9. The apparatus for low-temperature decomposition of lithium battery electrolyte according to claim 2, characterized in that, The feeding section also includes a suction pump, one end of which is connected to and communicates with the feeding hopper, and the other end is connected to and communicates with the screening chamber.

10. A method for low-temperature decomposition of lithium battery electrolyte, characterized in that, The process is carried out according to the low-temperature decomposition apparatus for lithium battery electrolyte as described in any one of claims 5-9, including the following steps: S1. Open the loading port of the vacuum chamber, insert the lithium battery, wait until the set capacity is reached, close the loading port, evacuate the vacuum, and then open the unloading port. S2. The lithium battery is crushed, and the pump is started at the same time to circulate the internal inert gas from top to bottom. S3. The broken battery fragments shake on the top of the vibrating screen and move toward the downward-sloping end; S4. The hopper holds and retains the battery fragments, the upper cover is closed, and the lower cover is opened to feed the battery fragments into the low-temperature baking section. S5. The vibratory feeder moves along the circular track at the receiving section to receive battery fragments, making them spread flat on the vibratory feeder. The battery fragments are then shaken to make them evenly distributed and to avoid one side being tightly attached to the feeder surface. S6. Move the vibratory plate along the circular track to bake in the baking chamber. When baking reaches the unloading section, flip the vibratory plate with the flipping device to unload the material and prepare it to enter the receiving section for the next receiving. Repeat this process to form a cyclical receiving and baking process.

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