A lithium slag recycling and processing device

Abstract

This invention relates to the field of lithium recycling technology, specifically to a lithium slag recycling and processing device, comprising a sealed processing chamber, a metering feeding assembly, a gas collection assembly, and a circulation assembly. The metering feeding assembly extends obliquely into the sealed processing chamber from the top. The sealed processing chamber includes a reaction liquid layer at the bottom and a white oil layer above the reaction liquid layer. The metering feeding assembly pushes the lithium slag from top to bottom, passing through the white oil layer and entering a specific position in the reaction liquid layer. The obliquely positioned metering feeding assembly can press metallic lithium slag into the sealed processing chamber. The reaction liquid layer and white oil layer in the sealed processing chamber allow the lithium slag to undergo a chemical reaction in a safe environment, and the generated gas is collected by the gas collection assembly at the top of the sealed processing chamber.

Description

Technical Field

[0001] This invention relates to the field of lithium recycling technology, specifically to a lithium slag recycling and processing device. Background Technology

[0002] The oil refining stage of lithium metal production generates a large amount of lithium-containing slag, which accounts for approximately 3% of the total lithium metal production. The main components of this slag include lithium metal, potassium, sodium and their oxides, nitrides, and carbides. The lithium metal slag generated during the oil refining stage is typically first soaked in white oil. After being removed from the white oil, a uniform oil film covers its surface. This oil film prevents direct contact between the lithium metal and water, oxygen, and nitrogen in the air, thus protecting the lithium metal slag.

[0003] However, as the storage time of lithium metal slag increases, the oil film on the surface of the lithium metal slag gradually thins and becomes partially exposed. Furthermore, friction between lithium metal slag during transportation can also damage the oil film. Without the protection of the oil film, lithium metal reacts with water, oxygen, and nitrogen in the air and releases a large amount of heat. Therefore, it is necessary to recycle lithium metal slag in a safe manner, which will also generate significant social and economic value. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a lithium slag recycling and processing device. The device uses an inclined quantitative feeding component to press metallic lithium slag into a sealed processing chamber. The reaction liquid layer and white oil layer in the sealed processing chamber allow the lithium slag to undergo a chemical reaction in a safe environment, and the generated gas is collected by a gas collection component at the top of the sealed processing chamber.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A lithium slag recycling and processing device includes a sealed processing chamber, a quantitative feeding component, a gas collection component, and a circulation component. The quantitative feeding component extends obliquely into the interior of the sealed processing chamber from the top. The sealed processing chamber includes a reaction liquid layer at the bottom and a white oil layer on top of the reaction liquid layer. The quantitative feeding component pushes the lithium slag from top to bottom, and after passing through the white oil layer, it enters a specific position in the reaction liquid layer.

[0009] A reaction liquid surface is formed between the reaction liquid layer and the white oil layer. After the oil film covering the outside of the lithium slag is dissolved by the white oil layer, it enters the reaction liquid layer and undergoes a chemical reaction to dissolve.

[0010] A gas collection assembly is provided above the specific position where the lithium slag enters the reaction liquid layer in the sealed processing chamber, which can collect the gas produced by the chemical reaction;

[0011] The quantitative feeding component is tilted so that the contact position between the lower end face of the quantitative feeding component and the surface of the reaction liquid is located on the side closer to the specific position of the contact position between the upper end face of the quantitative feeding component and the upper end face of the white oil layer. This allows the white oil layer to play a certain gas sealing role and allows the gas generated by the chemical reaction to enter the gas collection component upward.

[0012] The circulation component is capable of continuously supplying the reaction liquid layer with liquid that can carry out the chemical reaction.

[0013] Furthermore, it also includes a heating device, an inert gas delivery device, and a liquid level detection component. The heating device includes a heating rod and a heat generator. The heating rod extends into the white oil layer, and the heat generated by the heat generator is transferred through the heating rod to heat the white oil layer, thereby dissolving the oil film on the surface of the lithium slag that passes through the white oil layer.

[0014] The inert gas delivery device delivers inert gas to the cavity above the white oil layer in the sealed processing chamber to reduce the concentration of the gas produced by the chemical reaction.

[0015] The liquid level detection assembly includes a float, a sliding block, a guide rail, an upper limit switch, and a lower limit switch;

[0016] The float is located at the surface of the reaction liquid, and the density of the float is less than the density of the reaction liquid layer but greater than the density of the white oil layer.

[0017] The float is fixed to the sliding block and can slide on the guide rail. The guide rail is fixed to the inner wall of the sealing chamber and an upper limit switch and a lower limit switch are respectively provided at the upper and lower ends of the guide rail.

[0018] The float plate drives the sliding block to actuate the upper / lower limit switch, thereby controlling the circulation assembly to reduce / increase the liquid in the sealed treatment chamber.

[0019] Furthermore, the circulation assembly includes a liquid inlet, a circulation inlet, and a filter box. The filter box is located at the bottom of the reaction liquid layer and is connected to a circulation pump via a conduit. The circulation pump re-feeds the liquid drawn from the filter box into the reaction liquid layer through the circulation inlet.

[0020] The liquid inlet is equipped with a control valve, which can add / discharge liquid into / from the sealed processing chamber.

[0021] Furthermore, the quantitative feeding assembly includes a feeding section, a hopper, a drive motor, a driven wheel, a transmission belt, a drive wheel, a support frame, and a discharge port;

[0022] The quantitative feeding assembly is provided with a shell to form a sealed cavity. The feeding part is inclined and a hopper is provided above it. The feeding part extends into the cavity of the sealed processing chamber at an incline, passes through the white oil layer and extends into the reaction liquid layer. The discharge port is located at the lower end of the feeding part and is located in the reaction liquid layer.

[0023] The connection between the housing of the quantitative feeding assembly and the sealed processing chamber forms a processing chamber joint. The portion of the housing of the quantitative feeding assembly above the processing chamber joint is a sealed housing. The portion of the housing of the quantitative feeding assembly below the processing chamber joint is provided with an array of liquid guiding holes, which allow the liquid of the white oil layer to enter the interior of the quantitative feeding assembly.

[0024] Furthermore, the feeding section is equipped with a transmission component for quantitatively pushing the lithium slag. The transmission component is connected to the driven wheel, which is rotatably supported on the support frame. The driving wheel of the drive motor is connected to the driven wheel via a transmission belt.

[0025] Furthermore, the transmission assembly includes a main sprocket set, a secondary sprocket set, a transmission chain, a pusher plate, a chain support plate, a stop plate, and a partition plate;

[0026] The main sprocket assembly is connected to the driven wheel, and two transmission chains are provided between the main sprocket assembly and the auxiliary sprocket assembly. A pusher plate is fixedly provided at the corresponding position between the two transmission chains.

[0027] The partition plate is located in the middle of the transmission chain, and the pusher plate is located on both sides of the partition plate. The partition plate divides the pusher section into a pusher space and a return space.

[0028] The drive motor drives the transmission chain to rotate cyclically, and the lithium slag is quantitatively pushed into the pushing space by the pusher plate.

[0029] Furthermore, the cross-section of the chain support plate and the stop plate is L-shaped. The chain support plate is located on the lower side of the transmission chain, and one folded edge of the chain support plate supports and lifts the transmission chain, while the other folded edge abuts against the end of the pusher plate.

[0030] One folded edge of the baffle plate is located on the upper side of the transmission chain, and the other folded edge abuts against the end of the pusher plate;

[0031] Two adjacent pusher plates, chain conveyor folding plate, baffle folding plate, housing of quantitative pusher assembly, and partition plate enclose a space with a fixed volume, which contains lithium slag to achieve quantitative feeding.

[0032] Furthermore, a baffle plate is provided in the hopper at the position communicating with the pushing part. The baffle plate blocks the return space of the pushing part so that lithium slag entering from above the hopper enters the pushing space of the pushing part along the gap between the side wall of the hopper and the baffle plate.

[0033] The lower end of the pusher is provided with a discharge port, which is connected to the pusher space of the pusher.

[0034] Furthermore, the gas collection assembly includes a vacuum pump, a suction pipe for the pusher section, and a suction pipe for the sealed chamber;

[0035] The sealed processing chamber also includes a gas chamber and a conical gas collection section, with the gas chamber located above the white oil layer;

[0036] The air pump is located at the top of the sealed processing chamber. The air pump port is connected to the conical gas collection part through the air suction pipe of the sealed chamber. The air pump port is connected to the part of the pusher located outside the sealed processing chamber through the air suction pipe of the pusher.

[0037] The gas generated by the chemical reaction of lithium slag mainly enters the vacuum pump through the conical gas collection section, and a small amount of gas generated by the chemical reaction enters the vacuum pump through the pusher cavity and the pusher suction pipe.

[0038] Furthermore, the baffle plate can prevent the gas in the pusher cavity from flowing into the discharge hopper, and introduce the gas in the pusher cavity into the pusher suction pipe through the baffle plate.

[0039] (III) Beneficial Effects

[0040] Compared with the prior art, the present invention provides a lithium slag recycling and processing device, which has the following beneficial effects:

[0041] 1. The arrangement of the quantitative feeding component and the sealed treatment chamber of the present invention is such that the contact position between the lower end face of the quantitative feeding component and the surface of the reaction liquid is located on the side closer to the center of the contact position between the upper end face of the quantitative feeding component and the upper end face of the white oil layer, so that the white oil layer can play a certain gas sealing role and allow the gas generated by the chemical reaction of lithium slag to enter the gas collection component upward.

[0042] 2. The liquid phase system inside the sealed processing chamber of the present invention includes a reaction liquid layer and a white oil layer. The white oil layer does not chemically react with the lithium slag, and can also perform preliminary treatment on the lithium slag pressed into the liquid phase system, removing the oil film on the outside of the lithium slag, so that the reaction when the lithium slag enters the reaction liquid layer is more stable.

[0043] 3. The quantitative feeding component of the present invention can realize the quantitative downward conveying of lithium slag. Through the relatively fixed volume space formed by the chain baffle, the baffle, the separator, the feeder, and the shell, the lithium slag in the space is pressed into the reaction liquid layer, which facilitates the control of the amount of lithium slag pressed in.

[0044] 4. The sealed processing chamber of the present invention is a closed cavity, which allows most of the gas generated by the chemical reaction of lithium slag to be collected by the gas collection component above. At the same time, when a small amount of gas diffuses upward through the metering pusher component, it can be blocked by the baffle plate in the pusher section and enter the gas suction pipe of the pusher section, thereby preventing the gas from diffusing. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of the lithium slag recycling and treatment device of the present invention;

[0046] Figure 2 This is a schematic diagram of the other side of the recycling and processing device of the present invention;

[0047] Figure 3 This is a schematic diagram of the sealing chamber of the present invention;

[0048] Figure 4 This is a schematic diagram of the internal structure of the sealing chamber of the present invention;

[0049] Figure 5 This is a schematic diagram of the quantitative feeding assembly of the present invention;

[0050] Figure 6 This is a schematic diagram of the internal structure of the feeding section of the present invention;

[0051] Figure 7 For the present invention Figure 6 A magnified view of a portion of point A;

[0052] Figure 8 This is a schematic diagram of the internal structure of the quantitative feeding component of the present invention;

[0053] Figure 9 This is a cross-sectional schematic diagram of the pusher section of the present invention;

[0054] Figure 10 This is a schematic diagram of the liquid level detection component of the present invention;

[0055] In the picture:

[0056] Sealed processing chamber 1, reaction liquid layer 11, reaction liquid surface 12, white oil layer 13, gas chamber 14, conical gas collection section 15;

[0057] Quantitative feeding assembly 2, feeding section 21, main sprocket group 211, secondary sprocket group 212, transmission chain 213, feeding plate 214, chain support plate 215, baffle plate 216, material separator plate 217, hopper 22, drive motor 23, driven wheel 24, transmission belt 25, drive wheel 26, support frame 27, processing chamber joint 28, liquid guide hole 29, discharge port 30, baffle plate 301;

[0058] Gas collection assembly 3, air pump 31, material pusher suction pipe 32, sealed chamber suction pipe 33;

[0059] Circulation component 4, liquid inlet 41, circulation inlet 42, filter box 43;

[0060] Heating device 5, heating rod 51, heat generator 52;

[0061] Inert gas conveying device 6;

[0062] Liquid level detection component 7, float 71, sliding block 72, guide rail 73, upper limit switch 74, lower limit switch 75. Detailed Implementation

[0063] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0064] The following is based on the appendix Figure 1-10The present invention provides a detailed description of a lithium slag recycling and processing device, comprising a sealed processing chamber 1, a quantitative feeding assembly 2, a gas collection assembly 3, and a circulation assembly 4. The quantitative feeding assembly 2 extends obliquely into the interior of the sealed processing chamber 1 from the top. The sealed processing chamber 1 includes a reaction liquid layer 11 at the bottom and a white oil layer 13 on top of the reaction liquid layer 11. The quantitative feeding assembly 2 pushes the lithium slag from top to bottom, passing through the white oil layer 13 and entering a specific position in the reaction liquid layer 11. A reaction liquid surface 12 is formed between the reaction liquid layer 11 and the white oil layer 13. The oil film covering the outside of the lithium slag is dissolved by the white oil layer 13 and then enters the reaction liquid. The lithium slag in the sealed treatment chamber 1 enters the reaction liquid layer 11 and undergoes a chemical reaction and dissolves; a gas collection component 3 is provided above the specific position of the reaction liquid layer 11, which can collect the gas generated by the chemical reaction; the quantitative feeding component 2 is inclined and the contact position between the lower end face of the quantitative feeding component 2 and the reaction liquid surface 12 is located on the side closer to the specific position of the contact position between the upper end face of the quantitative feeding component 2 and the upper end face of the white oil layer 13, so that the white oil layer 13 can play a certain gas sealing role and allow the gas generated by the chemical reaction to enter the gas collection component 3 upward; the circulation component 4 can continuously supply the reaction liquid layer 11 with liquid that can carry out the chemical reaction.

[0065] The liquid phase system in the sealed treatment chamber 1 ensures the harmless treatment of lithium metal slag. The reaction liquid layer 11 is an aqueous phase that can chemically react with the lithium metal slag, while the white oil layer 13 is an oil phase that does not chemically react with the lithium metal slag. The air pressure in the sealed treatment chamber 1 is maintained at a set negative pressure value. When the temperature of the aqueous phase reaches 60-80°C, the addition of lithium metal slag to the liquid phase system is stopped, and the aqueous phase in the sealed reaction container is discharged and replaced with an aqueous phase at room temperature.

[0066] Furthermore, it also includes a heating device 5, an inert gas conveying device 6, and a liquid level detection component 7. The heating device 5 includes a heating rod 51 and a heat generator 52. The heating rod 51 extends into the white oil layer 13. The heat generated by the heat generator 52 is transferred through the heating rod 51 to heat the white oil layer 13, so that the oil film on the surface of the lithium slag passing through the white oil layer 13 is dissolved.

[0067] The inert gas delivery device 6 delivers inert gas to the cavity above the white oil layer 13 in the sealed processing chamber 1 to reduce the concentration of the gas produced by the chemical reaction. The liquid level detection component 7 includes a float 71, a sliding block 72, a guide rail 73, an upper limit switch 74, and a lower limit switch 75. The float 71 is located at the reaction liquid surface 12, and the density of the float 71 is less than the density of the reaction liquid layer 11 and greater than the density of the white oil layer 13. The float 71 is fixed to the sliding block 72 and can slide on the guide rail 73. The guide rail 73 is fixed to the inner wall of the sealed processing chamber 1, and the upper and lower ends of the guide rail 73 are respectively provided with an upper limit switch 74 and a lower limit switch 75. The float 71 drives the sliding block 72 to touch the upper limit switch 74 / lower limit switch 75 to control the circulation component 4 to reduce / increase the liquid in the sealed processing chamber 1.

[0068] Furthermore, the circulation component 4 includes a liquid inlet 41, a circulation inlet 42, and a filter box 43. The filter box 43 is located at the bottom of the reaction liquid layer 11 and is connected to the circulation pump through a conduit. The circulation pump re-feeds the liquid drawn from the filter box 43 into the reaction liquid layer 11 through the circulation inlet 42. A control valve is provided on the liquid inlet 41 to replenish / discharge the liquid in the sealed processing chamber 1.

[0069] Furthermore, the quantitative feeding assembly 2 includes a feeding section 21, a hopper 22, a drive motor 23, a driven wheel 24, a transmission belt 25, a drive wheel 26, a support frame 27, and a discharge port 30. The quantitative feeding assembly 2 is externally fitted with a housing to form a sealed cavity. The feeding section 21 is inclined, and the hopper 22 is positioned above it. The feeding section 21 extends inclinedly into the cavity of the sealed processing chamber 1, passes through the white oil layer 13, and then extends into the reaction liquid layer 11. The discharge port 30 is located within the feeding section. The lower end of 21 is located in the reaction liquid layer 11; the connection position between the housing of the quantitative feeding assembly 2 and the sealed processing chamber 1 forms a processing chamber joint 28, the part of the housing of the quantitative feeding assembly 2 above the processing chamber joint 28 is a sealed housing, and the part of the housing of the quantitative feeding assembly 2 below the processing chamber joint 28 is provided with an array of liquid guiding holes 29, the liquid guiding holes 29 allowing the liquid of the white oil layer 13 to enter the interior of the quantitative feeding assembly 2.

[0070] Furthermore, the feeding section 21 is provided with a transmission component for quantitatively pushing the lithium slag. The transmission component is connected to the driven wheel 24. The driven wheel 24 is rotatably supported on the support frame 27. The driving wheel 26 of the drive motor 23 is connected to the driven wheel 24 via a transmission belt 25.

[0071] Furthermore, the transmission assembly includes a main sprocket assembly 211, a secondary sprocket assembly 212, a transmission chain 213, a pusher plate 214, a chain support plate 215, a stop plate 216, and a partition plate 217. The main sprocket assembly 211 is connected to the driven wheel 24. Two transmission chains 213 are arranged between the main sprocket assembly 211 and the secondary sprocket assembly 212. A pusher plate 214 is fixedly arranged at a corresponding position between the two transmission chains 213. The partition plate 217 is arranged in the middle of the transmission chain 213, and the pusher plate 214 is located on both sides of the partition plate 217. The partition plate 217 divides the pusher section 21 into a pusher space and a return space. The drive motor 23 drives the transmission chain 213 to rotate cyclically, and the lithium slag is quantitatively pushed into the pusher space by the pusher plate 214.

[0072] Furthermore, the cross-section of the chain support plate 215 and the baffle plate 216 is L-shaped. The chain support plate 215 is located on the lower side of the transmission chain 213, and one folded edge of the chain support plate 215 supports and lifts the transmission chain 213, while the other folded edge abuts against the end of the pusher plate 214. One folded edge of the baffle plate 216 is located on the upper side of the transmission chain 213, while the other folded edge abuts against the end of the pusher plate 214. Two adjacent pusher plates 214, chain support plate 215, baffle plate 216, the housing of the quantitative pusher assembly 2, and the partition plate 217 enclose a space with a fixed volume, which contains lithium slag to achieve quantitative feeding.

[0073] Furthermore, a baffle plate 301 is provided in the hopper 22 at a position communicating with the pusher section 21. The baffle plate 301 blocks the return space of the pusher section 21, so that lithium slag entering from above the hopper 22 enters the pusher space of the pusher section 21 along the gap between the side wall of the hopper 22 and the baffle plate 301. The lower end of the pusher section 21 is provided with a discharge port 30, which communicates with the pusher space of the pusher section 21.

[0074] The quantitative feeding component enables the quantitative downward conveying of lithium slag. Through the relatively fixed volume space enclosed by the chain baffle, baffle, separator, feeder, and shell, the lithium slag in this space is pressed into the reaction liquid layer, which facilitates the control of the amount of lithium slag pressed in.

[0075] Furthermore, the gas collection assembly 3 includes a vacuum pump 31, a pusher suction pipe 32, and a sealed chamber suction pipe 33; the sealed processing chamber 1 also includes a gas chamber 14 and a conical gas collection section 15, the gas chamber 14 being located above the white oil layer 13; the vacuum pump 31 is located at the top of the sealed processing chamber 1, the vacuum port of the vacuum pump 31 is connected to the conical gas collection section 15 through the sealed chamber suction pipe 33, and the vacuum port of the vacuum pump 31 is connected to the portion of the pusher section 21 located outside the sealed processing chamber 1 through the pusher suction pipe 32; the gas generated by the chemical reaction of lithium slag mainly enters the vacuum pump 31 through the conical gas collection section 15, and a small amount of gas generated by the chemical reaction enters the vacuum pump 31 through the pusher section 21 cavity and the pusher section suction pipe 32.

[0076] Furthermore, the baffle plate 301 can prevent the gas in the cavity of the pusher section 21 from flowing into the discharge hopper 22, and introduce the gas in the cavity of the pusher section 21 into the suction pipe 32 of the pusher section through the baffle plate 301.

[0077] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium slag recycling and processing device, comprising a sealed processing chamber (1), a quantitative feeding assembly (2), a gas collection assembly (3), and a circulation assembly (4), characterized in that: The metering pusher assembly (2) extends obliquely into the interior of the sealed processing chamber (1) from the top. The sealed processing chamber (1) includes a reaction liquid layer (11) at the bottom and a white oil layer (13) on the reaction liquid layer (11). The metering pusher assembly (2) pushes the lithium slag from top to bottom, and after passing through the white oil layer (13), it enters the reaction liquid layer (11). A reaction liquid surface (12) is formed between the reaction liquid layer (11) and the white oil layer (13). The oil film wrapped around the outside of the lithium slag is dissolved by the white oil layer (13) and then enters the reaction liquid layer (11) and undergoes a chemical reaction to dissolve. A gas collection assembly (3) is provided above the lithium slag entering the reaction liquid layer (11) in the sealed processing chamber (1) to collect the gas produced by the chemical reaction; The quantitative feeding component (2) is tilted so that the contact position between the lower end face of the quantitative feeding component (2) and the reaction liquid surface (12) is located on the side of the contact position between the upper end face of the quantitative feeding component (2) and the upper end face of the white oil layer (13), so that the white oil layer (13) can play a gas sealing role and allow the gas generated by the chemical reaction to enter the gas collection component (3) upward. The circulation component (4) is able to continuously supply the reaction liquid layer (11) with liquid that can carry out the chemical reaction.

2. The lithium slag recycling and treatment device according to claim 1, characterized in that: It also includes a heating device (5), an inert gas conveying device (6), and a liquid level detection component (7). The heating device (5) includes a heating rod (51) and a heat generator (52). The heating rod (51) extends into the white oil layer (13). The heat generated by the heat generator (52) is transferred through the heating rod (51) to heat the white oil layer (13), so that the oil film on the surface of the lithium slag passing through the white oil layer (13) is dissolved. The inert gas delivery device (6) delivers inert gas to the cavity above the white oil layer (13) in the sealed processing chamber (1) to reduce the concentration of the gas produced by the chemical reaction; The liquid level detection component (7) includes a float (71), a sliding block (72), a guide rail (73), an upper limit switch (74), and a lower limit switch (75); The float (71) is located at the surface of the reaction liquid (12), and the density of the float (71) is less than the density of the reaction liquid layer (11) and greater than the density of the white oil layer (13). The float (71) is fixed on the sliding block (72) and can slide on the guide rail (73). The guide rail (73) is fixed to the inner wall of the sealing treatment chamber (1) and the upper and lower ends of the guide rail (73) are respectively provided with an upper limit switch (74) and a lower limit switch (75). The float (71) drives the sliding block (72) to actuate the upper limit switch (74) / lower limit switch (75) to control the circulation assembly (4) to reduce / increase the liquid in the sealed treatment chamber (1).

3. The lithium slag recycling and treatment device according to claim 2, characterized in that: The circulation component (4) includes a liquid inlet (41), a circulation inlet (42), and a filter box (43). The filter box (43) is located at the bottom of the reaction liquid layer (11) and is connected to the circulation pump through a conduit. The circulation pump re-feeds the liquid drawn from the filter box (43) into the reaction liquid layer (11) through the circulation inlet (42). The liquid inlet (41) is equipped with a control valve, which can fill / drain the liquid into the sealed processing chamber (1).

4. The lithium slag recycling and treatment device according to claim 3, characterized in that: The quantitative feeding assembly (2) includes a feeding section (21), a hopper (22), a drive motor (23), a driven wheel (24), a transmission belt (25), a drive wheel (26), a support frame (27), and a discharge port (30). The quantitative feeding assembly (2) is provided with a shell to form a sealed cavity. The feeding part (21) is inclined and a dropping hopper (22) is provided above it. The feeding part (21) extends into the cavity of the sealed processing chamber (1) at an incline, passes through the white oil layer (13) and extends into the reaction liquid layer (11). The discharge port (30) is located at the lower end of the feeding part (21) and is located in the reaction liquid layer (11). The connection between the housing of the quantitative feeding assembly (2) and the sealed processing chamber (1) forms a processing chamber joint (28). The portion of the housing of the quantitative feeding assembly (2) above the processing chamber joint (28) is a sealed housing. The portion of the housing of the quantitative feeding assembly (2) below the processing chamber joint (28) is provided with an array of liquid guiding holes (29). The liquid guiding holes (29) allow the liquid of the white oil layer (13) to enter the interior of the quantitative feeding assembly (2).

5. The lithium slag recycling and treatment device according to claim 4, characterized in that: The feeding section (21) is equipped with a transmission component for quantitatively pushing the lithium slag. The transmission component is connected to the driven wheel (24) for transmission. The driven wheel (24) is rotatably supported on the support frame (27). The driving wheel (26) of the drive motor (23) is connected to the driven wheel (24) through the transmission belt (25).

6. The lithium slag recycling and treatment device according to claim 5, characterized in that: The transmission assembly includes a main sprocket assembly (211), a secondary sprocket assembly (212), a transmission chain (213), a pusher plate (214), a chain support plate (215), a stop plate (216), and a partition plate (217). The main sprocket assembly (211) is connected to the driven wheel (24) for transmission. Two transmission chains (213) are provided between the main sprocket assembly (211) and the secondary sprocket assembly (212). A pusher plate (214) is fixedly provided at the corresponding position between the two transmission chains (213). The partition plate (217) is located in the middle of the transmission chain (213), and the pusher plate (214) is located on both sides of the partition plate (217). The partition plate (217) divides the pusher section (21) into a pusher space and a return space. The drive motor (23) drives the transmission chain (213) to rotate cyclically, and pushes lithium slag quantitatively in the pushing space through the pusher plate (214).

7. The lithium slag recycling and treatment device according to claim 6, characterized in that: The cross-section of the chain folding plate (215) and the material stop folding plate (216) is L-shaped. The chain folding plate (215) is located on the lower side of the transmission chain (213), and one folded edge of the chain folding plate (215) supports and lifts the transmission chain (213), while the other folded edge abuts against the end of the pusher plate (214). One folded edge of the baffle plate (216) is located on the upper side of the transmission chain (213), and the other folded edge abuts against the end of the pusher plate (214); Two adjacent pusher plates (214), chain folding plate (215), baffle folding plate (216), the housing of the quantitative pusher assembly (2) and the partition plate (217) form a space with a fixed volume, which contains lithium slag to achieve quantitative feeding.

8. The lithium slag recycling and treatment device according to claim 7, characterized in that: A baffle plate (301) is provided in the hopper (22) at a position communicating with the pusher (21). The baffle plate (301) blocks the return space of the pusher (21) so that lithium slag entering from above the hopper (22) enters the pusher space of the pusher (21) along the gap between the side wall of the hopper (22) and the baffle plate (301). The lower end of the pusher section (21) is provided with a discharge port (30), and the discharge port (30) is connected to the pusher space of the pusher section (21).

9. A lithium slag recycling and treatment device according to claim 8, characterized in that: The gas collection assembly (3) includes a vacuum pump (31), a material pusher suction pipe (32), and a sealed chamber suction pipe (33). The sealed processing chamber (1) also includes a gas chamber (14) and a conical gas collection section (15), the gas chamber (14) being located above the white oil layer (13); The air pump (31) is located at the top of the sealed processing chamber (1). The air pump (31) is connected to the conical gas collection part (15) through the air suction pipe (33) of the sealed chamber. The air pump (31) is connected to the part of the pusher (21) located outside the sealed processing chamber (1) through the air suction pipe (32) of the pusher. The gas generated by the chemical reaction of lithium slag mainly enters the vacuum pump (31) through the conical gas collection part (15), and a small amount of gas generated by the chemical reaction enters the vacuum pump (31) through the pusher part (21) cavity and the pusher part suction pipe (32).

10. A lithium slag recycling and treatment device according to claim 9, characterized in that: The baffle plate (301) can prevent the gas in the cavity of the pusher section (21) from flowing into the hopper (22), and introduce the gas in the cavity of the pusher section (21) into the suction pipe (32) of the pusher section through the baffle plate (301).

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