A water immersion device for resource recycling and a plate-frame slag collaborative lithium extraction method

Abstract

This invention provides a water immersion device for resource recovery and a method for co-extracting lithium from plate and frame slag, relating to the field of solid waste resource utilization technology. The water immersion device for resource recovery includes: a tank body, with a connecting pipe and a water injection pipe at the top; a blower installed at the top of the tank body, with the blower's air inlet connected to the inside of the tank body; and a drive unit, with its fixing part fixed to the bottom of the tank body. The method for co-extracting lithium from plate and frame slag includes the following steps: Step S1, drying the desulfurized plate and frame slag. Ultimately, this allows one water immersion tank to conveniently receive the roasted material while another water immersion tank simultaneously weighs the roasted material, adds water after weighing, and weighs the amount of water added, ensuring the accuracy of the roasted material and water ratio; after the second telescopic component controls the separation of the weighing device from the water immersion tank, the second telescopic component can also control the drive unit to switch from an independent exhaust mode to a workstation switching mode.

Description

Technical Field

[0001] This invention relates to the field of solid waste resource utilization technology, and in particular to a resource recovery water leaching device and a method for co-extracting lithium from plate and frame slag. Background Technology

[0002] Spodumene, a crucial mineral for lithium extraction, typically generates a large amount of desulfurized slag during its sulfuric acid roasting process. This slag primarily consists of calcium sulfate, unreacted spodumene, aluminosilicates, and other impurities. Currently, this type of solid waste is mostly disposed of through stockpiling or landfilling, which not only occupies land resources but also poses environmental risks, particularly the potential pollution from harmful elements such as sulfur and fluorine. To achieve resource recovery, the slag needs to be roasted followed by water leaching, which facilitates subsequent resource recovery.

[0003] Traditional water leaching equipment typically involves manual collection of the roasted material after roasting, followed by manual batch-by-batch injection into the leaching tank.

[0004] Using existing calcined material leaching equipment, the amount of calcined material injected and the amount of water used are manually controlled. Due to human factors, the actual solid-liquid ratio is difficult to control stably, which is inconvenient for the independent receiving and weighing of calcined materials.

[0005] Therefore, it is necessary to provide a water immersion device for resource recycling to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a water immersion device for resource recycling, which solves the problem of inconvenient self-collection and weighing of roasted materials in related technologies.

[0007] To solve the above-mentioned technical problems, the present invention provides a water immersion device for resource recycling, comprising:

[0008] The tank body, with a connecting pipe and a water injection pipe installed on its top;

[0009] A blower is installed on the top of the tank, and the air inlet of the blower is connected to the inside of the tank.

[0010] A driving component, wherein the fixed part of the driving component is fixedly disposed at the bottom of the tank body, and the driving part of the driving component is fixedly provided with a connecting shaft, the top of the connecting shaft passing through the tank body and being fixedly connected to the driving part of the fan.

[0011] A support plate is rotatably installed inside the tank. The support plate is sleeved outside the connecting shaft. The support plate has four through holes. Four fixing covers are fixedly installed on the top of the support plate. The fixing covers are arranged in a one-to-one correspondence with the through holes.

[0012] A water immersion tank, the bottom of which is inserted into the fixed cover and supported on the top of the support plate, wherein the water immersion tank and the fixed cover are arranged in a one-to-one correspondence;

[0013] The weighing assembly includes a second telescopic member and a weighing device. The fixed part of the second telescopic member is fixedly disposed in the tank body, and the telescopic part of the second telescopic member is fixedly connected to the bottom of the weighing device. The bottom of the water immersion tank is located on the lifting path of the weighing device.

[0014] A connecting assembly includes a first gear, a connector, a second gear, and a connecting plate. The first gear is fixed on the connecting shaft. The connector is a sliding shaft structure. The bottom of the connector passes through the support plate and is fixedly connected to the second gear. One end of the connecting plate is fixedly connected to the telescopic part of the second telescopic member. The second gear is rotatably mounted on the other end of the connecting plate. The first gear is located on the lifting path of the second gear.

[0015] The output end of the roasting tube passes through the connecting pipe and is inserted into the interior of the tank, aligned directly above one of the water immersion tanks; the water injection pipe is installed through the tank and located above one of the water immersion tanks.

[0016] Preferably, the water injection pipe is equipped with a solenoid valve.

[0017] Preferably, the bottom of the tank is provided with a discharge hole, the water immersion tank is provided with a discharge pipe, the discharge pipe is provided with a solenoid valve, and the discharge hole is located on the path of the discharge pipe as it rotates with the support plate.

[0018] Preferably, the four water immersion tanks are evenly distributed circumferentially above the support plate and correspond sequentially to the feeding station, weighing station, settling station and discharging station.

[0019] Preferably, the resource recycling water immersion equipment further includes a switch assembly, which includes a first telescopic member and a switch plate. The fixed part of the first telescopic member is fixedly disposed on the top of the tank body. The telescopic part of the first telescopic member passes through the tank body and is fixedly connected to the switch plate. The switch plate slides against the output port of the roasting tube.

[0020] Preferably, the number of connectors is four, and the four connectors are evenly distributed circumferentially on the support plate.

[0021] Preferably, the bottom of the tank is provided with support legs, which are distributed circumferentially at the bottom of the tank.

[0022] Preferably, the first telescopic component is a spring-supported tube, and the first telescopic component elastically connects the tank body and the switch plate;

[0023] The connecting assembly further includes an elastic element, a synchronization ring, and a connecting slide. The elastic element is a spring-supported tube, and its two ends are elastically connected to the connecting element and the synchronization ring, respectively. One end of the connecting slide is fixed to the switch plate, and the other end of the connecting slide abuts against the top of the synchronization ring.

[0024] Preferably, the air outlet of the fan is connected to a delivery pipe, and the water injection pipe passes through the delivery pipe;

[0025] The resource recycling water immersion equipment also includes a diversion hood, which is sleeved on the outer wall of the tank. The output end of the conveying pipe is fixedly connected to the top of the diversion hood, and an exhaust pipe is provided at the bottom of the diversion hood.

[0026] This invention also provides a method for synergistic lithium extraction from plate and frame slag, comprising the following steps:

[0027] Step S1: Dry the desulfurization plate and frame slag, then coarsely crush it using a jaw crusher, and then finely grind it using a ball mill or vibrating mill to obtain powder material.

[0028] Step S2: The spodumene concentrate powder and powdered materials are dry mixed and roasted to obtain roasted material, which is then fed into the resource recycling water immersion equipment.

[0029] Step S3: Add water to the roasted material, soak it in water, and then filter it to obtain leachate and leachate residue;

[0030] Step S4: Add NaOH solution to the leachate to adjust the pH; then add Na 2 CO 3 After standing and filtering, the filtrate is transferred to an evaporator and concentrated under reduced pressure to obtain a concentrated solution.

[0031] Step S5: Mix the concentrated solution with sodium carbonate to carry out a lithium precipitation reaction. After the reaction is complete, filter, wash, and dry to obtain lithium carbonate.

[0032] Compared with related technologies, the resource recycling water immersion device provided by the present invention has the following beneficial effects:

[0033] Ultimately, while one water immersion tank receives the calcined material, the other water immersion tank can simultaneously weigh the calcined material, add water after weighing, and weigh the amount of water added, to ensure the accuracy of the ratio of calcined material to water source; after the second telescopic component controls the separation of the weighing device from the water immersion tank, the second telescopic component can also control the drive component to switch from independent exhaust mode to workstation switching mode. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 A three-dimensional diagram of a first embodiment of a water immersion device for resource recycling provided by the present invention;

[0036] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of section AA shown;

[0037] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of section BB shown;

[0038] Figure 4 for Figure 2 A 3D view of the connection part of the connecting plate shown;

[0039] Figure 5 for Figure 2 Top view of the calcination tube connection section shown;

[0040] Figure 6 This is a schematic diagram of a first embodiment of a water immersion device for resource recycling provided by the present invention, wherein... Figure 6 (a) in the diagram shows the state of the drive unit in the workstation switching mode. Figure 6 (b) in the diagram shows the state of the weighing device lifting the water immersion tank upwards for weighing;

[0041] Figure 7 A three-dimensional diagram of a second embodiment of a water immersion device for resource recycling provided by the present invention;

[0042] Figure 8 for Figure 7 A schematic cross-sectional view of the connecting part of the connector shown.

[0043] Figure 9 for Figure 8 The diagram shows the state of the drive unit in the workstation switching mode.

[0044] Figure 10 A three-dimensional diagram of a third embodiment of a water immersion device for resource recycling provided by the present invention;

[0045] Figure 11 for Figure 10 A schematic diagram of a partial cross-section of the drainage hood shown;

[0046] Figure 12 The process flow diagram of the plate and frame slag co-extraction lithium extraction method provided by the present invention is shown.

[0047] Explanation of icon numbers:

[0048] 1. Tank body; 101. Discharge port; 11. Connecting pipe; 12. Water injection pipe; 100. Calcination pipe;

[0049] 2. Switch assembly; 21. First telescopic component; 22. Switch plate;

[0050] 3. Fan;

[0051] 4. Driving component; 41. Connecting shaft;

[0052] 5. Support plate; 51. Fixing cover; 501. Through hole;

[0053] 6. Water immersion tank; 61. Discharge pipe;

[0054] 7. Weighing assembly; 71. Second telescopic component; 72. Weighing device;

[0055] 8. Connecting assembly; 81. First gear; 82. Connector; 83. Second gear; 84. Connecting plate;

[0056] 85. Elastic element; 86. Synchronizing ring; 87. Connecting carriage;

[0057] 31. Conveying pipe;

[0058] 9. Drainage hood; 91. Exhaust pipe.

[0059] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0060] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0061] This invention provides a water immersion device for resource recycling.

[0062] First embodiment.

[0063] Please see Figure 1 In this invention, a water immersion device for resource recycling includes:

[0064] Tank 1, the top of which is provided with connecting pipe 11 and water injection pipe 12;

[0065] Fan 3 is installed on the top of the tank 1, and the air inlet of the fan 3 is connected to the inside of the tank 1;

[0066] The driving component 4 has a fixed part fixed to the bottom of the tank body 1, and a connecting shaft 41 is fixed to the driving part of the driving component 4. The top of the connecting shaft 41 passes through the tank body 1 and is fixedly connected to the driving part of the fan 3.

[0067] The support plate 5 is rotatably installed inside the tank body 1. The support plate 5 is sleeved outside the connecting shaft 41. The support plate 5 has four through holes 501. The top of the support plate 5 is fixedly provided with four fixing covers 51. The fixing covers 51 are arranged in a one-to-one correspondence with the through holes 501.

[0068] A water immersion tank 6, the bottom of which is inserted into the fixing cover 51 and supported on the top of the support plate 5, is provided in a one-to-one correspondence between the water immersion tank 6 and the fixing cover 51.

[0069] Weighing assembly 7 includes a second telescopic member 71 and a weighing device 72. The fixed part of the second telescopic member 71 is fixedly installed inside the tank body 1. The telescopic part of the second telescopic member 71 is fixedly connected to the bottom of the weighing device 72. The bottom of the water immersion tank 6 is located on the lifting path of the weighing device 72.

[0070] The connecting assembly 8 includes a first gear 81, a connector 82, a second gear 83, and a connecting plate 84. The first gear 81 is fixed on the connecting shaft 41. The connector 82 is a sliding shaft structure. The bottom of the connector 82 passes through the support plate 5 and is fixedly connected to the second gear 83. One end of the connecting plate 84 is fixedly connected to the telescopic part of the second telescopic member 71. The second gear 83 is rotatably mounted on the other end of the connecting plate 84. The first gear 81 is located on the lifting path of the second gear 83.

[0071] The output end of the roasting tube 100 passes through the connecting tube 11 and is inserted into the interior of the tank body 1, and is aligned directly above one of the water immersion tanks 6; the water injection tube 12 is installed through the tank body 1 and is located above one of the water immersion tanks 6.

[0072] In this embodiment, the weighing device 72 adopts an electronic checkweigher from the prior art. The core weighing principle is dynamic weighing, that is, during the product transportation process, gravity is converted into an electrical signal by a high-precision sensor, and the true weight is calculated through high-speed sampling, filtering, and dynamic compensation algorithms. Further details will not be elaborated here.

[0073] The second telescopic component 71 can be a hydraulic cylinder, used to directly drive the weighing device 72. After passing through the through hole 501, the weighing device 72 can lift the water immersion tank 6 upward, thereby realizing the weighing of the roasted material in the water immersion tank 6.

[0074] In this embodiment, the blower 3 is used to extract hot air from the tank 1. The hot air is generated during the operation of the roasting tube 100. During the process of the material being fed into the water immersion tank 6 through the roasting tube 100, the hot air enters the tank 1 and is distributed above the water immersion tank 6.

[0075] like Figure 4 As shown, the other end of the connecting plate 84 and the second gear disk 83 are arranged around the outside of the connecting shaft 41 and have no contact with the connecting shaft 41.

[0076] In this embodiment, the driving component 4 is a motor structure used to drive the rotation adjustment of the connecting shaft 41.

[0077] In this embodiment, the driving component 4 includes two operating modes:

[0078] In the independent exhaust mode, the second toothed disc 83 is separated from the first toothed disc 81. The drive component 4 can only drive the fan 3 to operate through the connecting shaft 41. When the fan 3 is operating, it is convenient to extract the hot gas (high-temperature exhaust gas after roasting) in the tank 1.

[0079] In the workstation switching mode, the second gear plate 83 and the first gear plate 81 are engaged and meshed. The drive component 4 drives the fan 3 to operate through the connecting shaft 41, and also drives the four water immersion tanks 6 on the support plate 5 to rotate as a whole, so as to realize the workstation switching of the water immersion tanks 6 while hot air is being extracted.

[0080] In this embodiment, a solenoid valve is provided on the water injection pipe 12 for controlling the opening and closing of the water injection pipe 12; and an integrated controller (with built-in ratio parameters of calcined material and water source) is provided. The integrated controller is connected to the weighing device 72 and the solenoid valve on the water injection pipe 12 to facilitate automatic control of the equipment.

[0081] Weighing and water addition principle:

[0082] After the weighing device 72 has weighed the calcined material in the water immersion tank 6, the weighing device 72 feeds back the weight information of the material to the integrated controller. The integrated controller controls the solenoid valve on the water injection pipe 12 to open, and the water injection pipe 12 begins to add water to the water immersion tank 6. At the same time, the weighing device 72 continuously measures the weight of the added water until the water injection amount reaches the required proportion standard. Then, the integrated controller controls the solenoid valve on the water injection pipe 12 to close.

[0083] When the roasting tube 100 injects roasting material into one of the water immersion tanks 6, the second telescopic member 71 is activated. The second telescopic member 71 drives the weighing device 72 to move upward. After passing through the through hole 501, the weighing device 72 abuts against the bottom of the other water immersion tank 6. The weighing device 72 drives the water immersion tank 6 to move upward and separate from the support plate 5, so that the weighing device 72 weighs the roasting material in the water immersion tank 6.

[0084] After weighing, according to the weighing result, water of the corresponding proportion is added through the water injection pipe 12, and the added water is weighed by the raised weighing device 72 to ensure the accuracy of the added water volume.

[0085] After the water source is filled and the work position needs to be switched for the water immersion tank 6, the second telescopic component 71 is activated again. The second telescopic component 71 drives the weighing device 72 to move down, so that the bottom of the water immersion tank 6 is supported on the support plate 5 again. After that, the weighing device 72 is separated from the water immersion tank 6.

[0086] At the same time, the second telescopic member 71 also drives the connecting plate 84 and the second gear plate 83 to move down as a whole. After the second gear plate 83 moves down, it engages with the first gear plate 81, so that while the driving member 4 drives the fan 3 to run through the connecting shaft 41, the connecting shaft 41 also drives the second gear plate 83 to rotate synchronously through the first gear plate 81. The second gear plate 83 drives the support plate 5 to rotate through the connecting member 82. The support plate 5 drives the four water immersion tanks 6 to rotate as a whole, which facilitates the adjustment of the working position of the water immersion tanks 6.

[0087] Ultimately, while one water immersion tank 6 receives the calcined material, the other water immersion tank 6 can simultaneously weigh the calcined material, add water after weighing, and weigh the amount of water added, to ensure the accuracy of the ratio of calcined material to water source; after the second telescopic member 71 controls the weighing device 72 to separate from the water immersion tank 6, the second telescopic member 71 can also control the drive member 4 to switch from independent exhaust mode to workstation switching mode.

[0088] The main application scenario of this invention is the resource-based treatment of solid waste, which facilitates the water leaching process after waste roasting, optimizes the material handling system, and meets the requirements of energy conservation and environmental protection.

[0089] In a preferred embodiment of this example, a damping rubber ring is provided at the connection between the support plate 5 and the tank body 1 to increase the stability of the support plate 5 when it is not rotating, while not affecting the control of the rotation adjustment of the support plate 5 by the drive component 4.

[0090] Please refer to it again. Figure 3 The bottom of the tank body 1 is provided with a discharge hole 101, the water immersion tank 6 is provided with a discharge pipe 61, the discharge pipe 61 is provided with a solenoid valve, and the discharge hole 101 is located on the path of the discharge pipe 61 as it rotates with the support plate 5.

[0091] In this embodiment, the four water immersion tanks 6 are evenly distributed circumferentially above the support plate 5, and correspond sequentially to the feeding station, weighing station, settling station and discharging station.

[0092] Feeding station: such as Figure 2 The water immersion tank 6 (to the left of the connecting shaft 41) is located at the output position of the roasting tube 100 to facilitate the addition of roasting material;

[0093] Weighing station: such as Figure 3 The water immersion tank 6 (to the left of the connecting shaft 41) is positioned at the lifting position of the weighing device 72 to facilitate the weighing of the roasted material in the water immersion tank 6 and the addition of water.

[0094] stationary workstations: such as Figure 2 There are no other devices above or below the water immersion tank 6 (to the right of the connecting shaft 41), which facilitates the static water immersion of the roasted material in the water immersion tank 6 after water is injected.

[0095] Material feeding station: such as Figure 3 The water immersion tank 6 (to the right of the connecting shaft 41) is positioned above the discharge hole 101 to facilitate the discharge of water-immersed materials from the water immersion tank 6.

[0096] When the discharge pipe 61 is rotated to be directly above the discharge hole 101, the solenoid valve is opened to control the discharge pipe 61 to open. The discharge pipe 61 discharges the material that has been soaked in water in the water immersion tank 6, and after discharge, it is conveyed downward through the discharge hole 101.

[0097] When the equipment is running, a receiving device should be provided below the discharge port 101. Alternatively, a pipe can be used to connect to the discharge pipe 61, depending on the requirements.

[0098] In an optional embodiment of this example, a constant temperature heating device is provided inside the tank body 1 for heating and temperature control of the water immersion tank 6 in the stationary position, so as to meet the temperature control requirements of the water immersion in the water immersion tank 6.

[0099] Please refer to the following: Figure 1 and Figure 2 The resource recycling water immersion equipment also includes a switch assembly 2, which includes a first telescopic member 21 and a switch plate 22. The fixed part of the first telescopic member 21 is fixedly disposed on the top of the tank body 1. The telescopic part of the first telescopic member 21 passes through the tank body 1 and is fixedly connected to the switch plate 22. The switch plate 22 slides against the output port of the roasting tube 100.

[0100] In this embodiment, the first telescopic member 21 can be any one of an electric telescopic rod, a hydraulic telescopic cylinder, or a telescopic cylinder, used to directly drive the lifting and lowering adjustment of the switch plate 22.

[0101] In this embodiment, the switch board 22 includes two operating states:

[0102] In the open state, the switch plate 22 is raised, and the output port of the calcining tube 100 is opened, so that when the calcining tube 100 is continuously rotating, the calcining material is discharged downward through the output port of the calcining tube 100 into the interior of the water immersion tank 6.

[0103] In the off state, the switch plate 22 moves down and the output port of the calcining tube 100 is closed, so that when the calcining tube 100 continues to rotate, the calcining material will not continue to fall, thus preventing the calcining material from falling into the area outside the water immersion tank 6.

[0104] The first telescopic component 21 facilitates the lifting and lowering adjustment of the switch plate 22. When the switch plate 22 is open, it facilitates the opening of the output port of the roasting tube 100, making it easier to put the roasting material into the water immersion tank 6. When the switch plate 22 is closed, it facilitates the closing of the output port of the roasting tube 100, providing support for the switching of the working position of the water immersion tank 6 and preventing the roasting material from continuously falling.

[0105] Preferably, there are four connectors 82, which are evenly distributed circumferentially on the support disk 5. This increases the stability of the connection between the second toothed disk 83 and the support disk 5.

[0106] The bottom of the tank body 1 is provided with support legs, which are distributed circumferentially along the bottom of the tank body 1. This facilitates the overall raising of the tank body 1 and allows for the discharge of water-soaked material from the discharge port 101.

[0107] The working principle of the resource recycling water immersion device provided in this embodiment is as follows:

[0108] See also Figure 3 and Figure 5 Let's define it as follows: In the initial state, the drive unit 4 is in independent exhaust mode, the weighing device 72 is separated from the water immersion tank 6, and the drive unit 4 continuously drives the fan 3 to operate.

[0109] Here, the four water immersion tanks 6 are defined as tank a, tank b, tank c, and tank d, respectively. Tank a is located at the feeding station, tank b is located at the weighing station, tank c is located at the settling station, and tank d is located at the discharging station. Tank a continuously injects calcined material, tank b completes water injection, tank c is settling and water immersion, and tank d is empty and waiting to receive material.

[0110] A1, when the material is fed into tank a, refer to the following: Figures 3 to 6 (a) in the middle

[0111] First, activate the first telescopic component 21. The first telescopic component 21 drives the switch plate 22 to move down. The switch plate 22 moves down and completely blocks the output port of the calcining tube 100, so that the switch plate 22 switches from the open state to the closed state.

[0112] Then activate the second telescopic component 71. The second telescopic component 71 drives the weighing device 72 and the connecting plate 84 to move down synchronously. After the connecting plate 84 moves down and aligns with the first toothed disc 81, the connecting plate 84 engages with the first toothed disc 81.

[0113] While the drive component 4 continuously drives the fan 3 to operate through the connecting shaft 41, the connecting shaft 41 also drives the first gear disk 81 to rotate. The first gear disk 81 drives the second gear disk 83 to rotate. The second gear disk 83 drives the support disk 5 to rotate through the connecting component 82. The support disk 5 drives the four water immersion tanks 6 to rotate synchronously by 90° through the four fixed covers 51, so that tank d enters the feeding station, tank a enters the weighing station, tank b enters the settling station, and tank c enters the discharge station.

[0114] Similarly, refer to the following: Figure 6 (a) to Figure 3 After the workstation switch is completed, the second telescopic component 71 is activated again. The second telescopic component 71 drives the weighing device 72 and the connecting plate 84 to move upward synchronously, so that the second toothed disc 83 separates from the first toothed disc 81, and the driving component 4 returns from the workstation switch mode to the independent exhaust mode.

[0115] Reactivate the first telescopic component 21, which drives the switch plate 22 to move upward. The switch plate 22 switches from the closed state to the open state, and the output port of the calcining tube 100 opens, allowing the calcining material to be fed into the b tank.

[0116] A2, when tank a needs to be weighed and water added, refer to the following: Figures 3 to 6 In (b), the second telescopic member 71 is activated, and the second telescopic member 71 drives the weighing device 72 and the connecting plate 84 to move upward as a whole. The connecting plate 84 drives the second toothed disc 83 to maintain separation from the first toothed disc 81.

[0117] Simultaneously, the weighing device 72 moves upward, first passing through the through hole 501 and then abutting against the bottom of can a. The weighing part of the weighing device 72 supports can a upward, so that the bottom of can a separates from the top of the support plate 5. Can a is completely supported on the weighing device 72. The weighing device 72 weighs the total weight g1 of can a and the calcined material, and then subtracts the weight g0 of can a itself. The weight g2 of the calcined material is obtained after calculation. The calculation formula is g2=g1-g0.

[0118] After weighing, the water injection pipe 12 is opened and water is injected into tank a. The weighing device 72 weighs the total weight g3 of tank a, the calcined material and the water source. After calculation, the weight g4 of the water source is obtained. The calculation formula is g4=g3-g1, which facilitates precise control of the amount of water added based on the actual weight of the calcined material in the water immersion tank 6 each time.

[0119] A3, After adding water, refer to the following: Figure 6 (b) to Figure 3 Close the water injection pipe 12, activate the second telescopic component 71, the second telescopic component 71 drives the weighing device 72 to move down, the bottom of tank b is supported again on the support plate 5, the weighing device 72 separates from tank b and moves out of the range of the through hole 501, the second toothed plate 83 moves down and remains separated from the first toothed plate 81, waiting for the next station switch.

[0120] Second embodiment.

[0121] Please refer to the following: Figures 7 to 8 Based on the resource recycling water immersion device provided in the first embodiment of the present invention, the second embodiment of the present invention proposes another resource recycling water immersion device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0122] Specifically, the second embodiment of the present invention provides a resource recycling water immersion device in which the first telescopic member 21 is a spring-supported tube, and the first telescopic member 21 elastically connects the tank body 1 and the switch plate 22.

[0123] The connecting assembly 8 further includes an elastic element 85, a synchronization ring 86, and a connecting slide 87. The elastic element 85 is a spring-supported tube, and its two ends are elastically connected to the connecting member 82 and the synchronization ring 86, respectively. One end of the connecting slide 87 is fixed to the switch plate 22, and the other end of the connecting slide 87 abuts against the top of the synchronization ring 86.

[0124] In this embodiment, the spring support tube structure of the first telescopic member 21 is used to elastically support the switch plate 22 downward, and the switch plate 22 abuts against the top of the synchronization ring 86 through the connecting slide 87.

[0125] In this embodiment, although the connecting slide 87 and the synchronization ring 86 are in contact, it does not affect the rotational adjustment of the synchronization ring 86.

[0126] When the drive unit 4 is in independent exhaust mode, the second gear 83 drives the synchronous ring 86 to move upward through the connector 82 and the elastic member 85, so that the synchronous ring 86 abuts against the connecting slide 87 upward. The elastic member 85 maintains an elastic extension state, and the first telescopic member 21 is in an elastic compression state (the elastic force of the elastic member 85 is much greater than the elastic force of the first telescopic member 21, so the first telescopic member 21 is compressed first), so that the connecting slide 87 drives the switch plate 22 to maintain an upward open state, which facilitates the discharge of the roasting material in the water immersion tank 6.

[0127] After the switch plate 22 abuts against the top of the tank 1, the connecting member 82 can continue to move upward and compress the elastic member 85, thereby providing lifting support for the upward movement of the second toothed disc 83, the connecting plate 84 and the weighing device 72.

[0128] When the drive unit 4 is in the workstation switching mode, the second gear plate 83 drives the synchronization ring 86 to move downward through the connector 82 and the elastic member 85. The first telescopic member 21 pushes the switch plate 22 to move downward adaptively under the elastic action. The switch plate 22 drives the connecting slide 87 to move downward and maintains contact with the synchronization ring 86.

[0129] When the water immersion tank 6 needs to be switched, the second telescopic component 71 is activated. The second telescopic component 71 drives the weighing device 72 to retract downwards on one hand, and drives the second toothed disc 83 to move down and engage with the first toothed disc 81 on the other hand. At the same time as the second toothed disc 83 moves down, the connecting component 82 and the elastic component 85 also drive the synchronous ring 86 to move down. The first telescopic component 21 adaptively pushes the switch plate 22 to move down. At the same time as the switch plate 22 moves down, it drives the connecting slide 87 to maintain contact with the synchronous ring 86 (the contact will not affect the rotation of the synchronous ring 86 relative to the connecting slide 87), so that the output port of the calcining tube 100 is closed, preventing the calcined material from being discharged when the water immersion tank 6 is switched.

[0130] When it is necessary to feed and weigh the water immersion tank 6, the second telescopic component 71 is activated again. The second telescopic component 71 drives the weighing device 72 to move upward to weigh the water immersion tank 6, and drives the second toothed disc 83 to move upward and separate from the first toothed disc 81. At the same time as the second toothed disc 83 moves upward, the synchronous ring 86 is also driven upward through the connecting component 82 and the elastic component 85. The synchronous ring 86 drives the connecting slide 87 to move upward, and the connecting slide 87 drives the switch plate 22 to move upward. The switch plate 22 moves upward and compresses the first telescopic component 21, so that the output port of the roasting tube 100 is opened, which facilitates the feeding of roasting material into the water immersion tank 6 after the workstation switch.

[0131] Ultimately, while the second telescopic component 71 controls the drive component 4 to switch from independent exhaust mode to workstation switching mode, the switch plate 22 is also adaptively closed simultaneously; while the drive component 4 switches from workstation switching mode to independent exhaust mode, the switch plate 22 is also adaptively opened simultaneously; when the drive component 4 is in independent exhaust mode, the second telescopic component 71 can also continue to drive the weighing device 72 to lift and weigh the water immersion tank 6.

[0132] The working principle of a water immersion device for resource recycling provided in this embodiment is as follows:

[0133] When the switch plate 22 is closed, the second telescopic member 71 is activated. The second telescopic member 71 drives the second gear plate 83 to move down through the connecting plate 84 and engage with the first gear plate 81. The drive member 4 switches from independent exhaust mode to workstation switching mode.

[0134] As the second toothed disc 83 moves downward, the connecting member 82 drives the elastic member 85 and the synchronizing ring 86 to move downward. The first telescopic member 21 adaptively pushes the switch plate 22 downward. The switch plate 22 drives the connecting slide 87 downward and maintains the contact between the connecting slide 87 and the synchronizing ring 86. The switch plate 22 adaptively switches from the open state to the closed state to prevent the output port of the roasting tube 100 from continuing to discharge material during the rotation adjustment of the water immersion tank 6.

[0135] When the switch plate 22 is opened, the second telescopic member 71 is activated. The second telescopic member 71 drives the second gear plate 83 to move upward and separate from the first gear plate 81 through the connecting plate 84. The drive member 4 switches from the workstation switching mode to the independent exhaust mode.

[0136] As the second toothed disc 83 moves upward, the elastic element 85 and the synchronous ring 86 are driven to move upward through the connector 82. The synchronous ring 86 pushes the connecting slide 87 to move upward, the switch plate 22 moves upward, and the first telescopic element 21 is compressed until the top of the switch plate 22 abuts against the tank body 1, so that the switch plate 22 returns from the closed state to the open state, which facilitates the opening of the roasting tube 100 and the continued feeding of materials after the water immersion tank 6 station is switched.

[0137] By connecting the switch plate 22 to the second gear plate 83, while the drive unit 4 is switching the working mode, the switch plate 22 can also be adaptively controlled to avoid the roasting tube 100 continuously discharging material during the work station switching process of the water immersion tank 6, and to ensure that the roasting material can fall stably and safely into the interior of the water immersion tank 6.

[0138] Third embodiment.

[0139] Please see Figure 10 Based on the resource recycling water immersion device provided in the first embodiment of the present invention, the third embodiment of the present invention proposes another resource recycling water immersion device. The third embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the separate implementation of the first embodiment.

[0140] Specifically, the third embodiment of the present invention provides a resource recycling water immersion device in which the air outlet of the blower 3 is connected to a conveying pipe 31, and the water injection pipe 12 passes through the conveying pipe 31.

[0141] The resource recycling water immersion equipment also includes a diversion hood 9, which is sleeved on the outer wall of the tank 1. The output end of the conveying pipe 31 is fixedly connected to the top of the diversion hood 9, and an exhaust pipe 91 is provided at the bottom of the diversion hood 9.

[0142] Since the temperature of the calcined material needs to be kept at a preset constant temperature during the immersion process in the water immersion tank 6, the insulation inside the tank 1 is of great significance in preventing temperature loss and meets the standards of energy conservation and environmental protection.

[0143] The hot air delivered by the fan 3 is conveniently transported to the interior of the shroud 9 through the delivery pipe 31 for heat preservation of the tank 1; while the hot air is being delivered through the delivery pipe 31, heat exchange is also performed on the water injection pipe 12 to keep the water source passing through the water injection pipe 12 warm, making full use of the heat energy of the hot air.

[0144] In a preferred embodiment of this invention, the drainage hood 9 is provided with a drainage inclined plate inside, and the drainage inclined plate is distributed in a ring-shaped inclined manner.

[0145] The inclined plate facilitates the flow of hot air injected into the hood 9 around the outer wall of the tank 1, increasing the heat exchange time between the hot air and the tank 1, enhancing the heat recovery effect of the hot air, and reducing heat loss.

[0146] The working principle of a water immersion device for resource recycling provided in this embodiment is as follows:

[0147] During the operation of the driving component 4, the driving component 4 drives the fan 3 to operate through the connecting shaft 41. The input end of the fan 3 draws hot air from the tank 1, and the output end of the fan 3 delivers the drawn hot air into the conveying pipe 31.

[0148] Water source insulation: while the water source is being transported by the water injection pipe 12, the hot air inside the delivery pipe 31 exchanges heat with the water injection pipe 12 as the water source passes through the delivery pipe 31, thereby insulating the transported water source and reducing the temperature loss during the water transport process in the water injection pipe 12.

[0149] The equipment is kept warm. The conveying pipe 31 continues to deliver hot air into the diversion hood 9. The hot air comes into full contact with the tank 1 and exchanges heat to keep the tank 1 warm. The temperature of the hot air is used to provide insulation for the tank 1, reducing the need for additional heat sources during equipment operation.

[0150] In one application scenario, the resource recycling water leaching equipment can be used in the subsequent plate and frame slag co-lithiation method for water leaching treatment of roasted materials, facilitating the co-lithiation of plate and frame slag solid waste.

[0151] In another application scenario, the resource recycling water leaching equipment can also be used in the extraction process of rare earth resources. After roasting and decomposing rare earth minerals, a rare earth sulfate solution is obtained by water leaching.

[0152] In another application scenario, the resource recovery water leaching equipment can also be used in solid waste resource utilization processes, where fluorine and aluminum are recovered by water leaching after aluminum electrolysis carbon slag has been alkali-melted and roasted.

[0153] The present invention also provides a method for synergistic lithium extraction from plate and frame slag.

[0154] The method for co-extraction of lithium from plate and frame slag includes the following steps:

[0155] Step S1: Dry the desulfurization plate and frame slag at a constant temperature of 100℃ for 12-24 hours until the moisture content is less than 1%. Then, use a jaw crusher for coarse crushing, and then use a ball mill or vibrating mill for fine grinding. Finally, pass it through a 150-mesh sieve (particle size <0.1mm) to obtain powder material.

[0156] Step S2: Accurately weigh the spodumene concentrate powder and powdered materials at a mass ratio of 1:0.5-2, dry mix them in a ball mill for 10-20 minutes to ensure uniform mixing, place the mixture in a refractory crucible, put it into a muffle furnace, heat it to 1000-1100℃ in an air atmosphere at a rate of 5-10℃ / min, and hold it for 30 minutes to obtain the calcined material. The calcined material is then fed into the resource recycling water immersion equipment.

[0157] Step S3: Add water to the calcined material at a solid-liquid ratio of 1:3-5, soak in water at 80-90℃ for 30 minutes, and then filter to obtain leachate and leachate residue;

[0158] Step S4: Add NaOH solution to the leachate to adjust the pH to 10-11, so that Fe... 3+ Al 3+ A hydroxide precipitate is formed; then an appropriate amount of Na is added. 2 CO 3 Remove Ca 2+ Mg 2+ After each step of impurity removal, the solution needs to be allowed to stand and filtered. The purified filtrate is then transferred to an evaporator and concentrated under reduced pressure at 80-90℃ until the lithium ion concentration reaches 25-30g / L to obtain a concentrated solution.

[0159] In step S5, the concentrated solution is reacted with sodium carbonate at a ratio of 1:1.05 to induce a lithium precipitation reaction. After the reaction is completed, the solution is filtered, washed three times, and dried to obtain lithium carbonate.

[0160] Furthermore, the plate-and-frame slag co-extraction lithium method further includes the following steps:

[0161] Step S6: Mix the leaching residue and aluminum slag at a mass ratio of 3-5:1, add an appropriate amount of water (usually 20-30% of the dry material mass), wet grind in a ball mill for 2-4 hours to make the particle size of the mixture reach D50<10μm, dry the slurry at 100-120℃ to moisture content<5%, and then granulate it into particles with a particle size of 0.1-0.5mm through a granulator to finally obtain the green body raw material;

[0162] Step S7: Add 3 wt% foaming agent (CaCO3) to the green body raw material. 3 After being thoroughly mixed, the mixture is pressed into green blanks of the desired shape under a pressure of 10-30 MPa. The green blanks are then placed on refractory pads and placed in a box furnace, where the temperature is increased to 1000-1200℃ at a rate of 3-5℃ / min, and held for 1-2 hours. During the sintering process, CaCO₃... 3 The material decomposes at approximately 850°C, while the oxidation of metallic aluminum in the aluminum slag is exothermic, promoting pore formation and ceramic densification. After cooling to room temperature in the furnace, a ceramic foam material with a porous structure is obtained.

[0163] Beneficial effects:

[0164] A method for co-extracting lithium from spodumene and industrial solid waste (desulfurization plate and frame slag), and preparing low thermal conductivity ceramic foam material from the lithium-extracted mixed slag, achieving full harmlessness and resource utilization of all components.

[0165] The specific structure of the resource recycling water immersion equipment is as described in the above embodiments. Since the plate and frame slag co-extraction lithium method adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0166] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A water immersion device for resource recycling, characterized in that, include: The tank body, with a connecting pipe and a water injection pipe installed on its top; A blower is installed on the top of the tank, and the air inlet of the blower is connected to the inside of the tank. A driving component, wherein the fixed part of the driving component is fixedly disposed at the bottom of the tank body, and the driving part of the driving component is fixedly provided with a connecting shaft, the top of the connecting shaft passing through the tank body and being fixedly connected to the driving part of the fan. A support plate is rotatably installed inside the tank. The support plate is sleeved outside the connecting shaft. The support plate has four through holes. Four fixing covers are fixedly installed on the top of the support plate. The fixing covers are arranged in a one-to-one correspondence with the through holes. A water immersion tank, the bottom of which is inserted into the fixed cover and supported on the top of the support plate, wherein the water immersion tank and the fixed cover are arranged in a one-to-one correspondence; The weighing assembly includes a second telescopic member and a weighing device. The fixed part of the second telescopic member is fixedly disposed in the tank body, and the telescopic part of the second telescopic member is fixedly connected to the bottom of the weighing device. The bottom of the water immersion tank is located on the lifting path of the weighing device. A connecting assembly includes a first gear, a connector, a second gear, and a connecting plate. The first gear is fixed on the connecting shaft. The connector is a sliding shaft structure. The bottom of the connector passes through the support plate and is fixedly connected to the second gear. One end of the connecting plate is fixedly connected to the telescopic part of the second telescopic member. The second gear is rotatably mounted on the other end of the connecting plate. The first gear is located on the lifting path of the second gear. The output end of the roasting tube passes through the connecting pipe and is inserted into the interior of the tank, aligned directly above one of the water immersion tanks; the water injection pipe is installed through the tank and located above one of the water immersion tanks.

2. The resource recycling water immersion device according to claim 1, characterized in that, A solenoid valve is installed on the water injection pipe.

3. The resource recycling water immersion device according to claim 1, characterized in that, The bottom of the tank is provided with a discharge hole, the water immersion tank is provided with a discharge pipe, the discharge pipe is provided with a solenoid valve, and the discharge hole is located on the path of the discharge pipe as it rotates with the support plate.

4. The resource recycling water immersion device according to claim 3, characterized in that, The four water immersion tanks are evenly distributed circumferentially above the support plate and correspond sequentially to the feeding station, weighing station, settling station and discharging station.

5. A water immersion device for resource recycling according to claim 1, characterized in that, The resource recycling water immersion equipment also includes a switch assembly, which includes a first telescopic member and a switch plate. The fixed part of the first telescopic member is fixedly disposed on the top of the tank body. The telescopic part of the first telescopic member passes through the tank body and is fixedly connected to the switch plate. The switch plate slides against the output port of the roasting tube.

6. A water immersion device for resource recycling according to claim 1, characterized in that, The number of connectors is four, and the four connectors are evenly distributed circumferentially on the support plate.

7. A water immersion device for resource recycling according to claim 1, characterized in that, The tank body is provided with support legs at the bottom, and the support legs are distributed circumferentially at the bottom of the tank body.

8. A water immersion device for resource recycling according to claim 5, characterized in that, The first telescopic component is a spring-supported tube, which elastically connects the tank body and the switch plate. The connecting assembly further includes an elastic element, a synchronization ring, and a connecting slide. The elastic element is a spring-supported tube, and its two ends are elastically connected to the connecting element and the synchronization ring, respectively. One end of the connecting slide is fixed to the switch plate, and the other end of the connecting slide abuts against the top of the synchronization ring.

9. A water immersion device for resource recycling according to claim 1, characterized in that, The air outlet of the fan is connected to a delivery pipe, and the water injection pipe passes through the delivery pipe. The resource recycling water immersion equipment also includes a diversion hood, which is sleeved on the outer wall of the tank. The output end of the conveying pipe is fixedly connected to the top of the diversion hood, and an exhaust pipe is provided at the bottom of the diversion hood.

10. A method for synergistic lithium extraction from plate and frame slag, characterized in that, Includes the following steps: Step S1: Dry the desulfurization plate and frame slag, then coarsely crush it using a jaw crusher, and then finely grind it using a ball mill or vibrating mill to obtain powder material. Step S2: The spodumene concentrate powder and powdered materials are dry mixed and roasted to obtain roasted material, which is then fed into the resource recovery water immersion equipment as described in any one of claims 1-9. Step S3: Add water to the roasted material, soak it in water, and then filter it to obtain leachate and leachate residue; Step S4: Add NaOH solution to the leachate to adjust the pH; then add Na 2 CO 3 After standing and filtering, the filtrate is transferred to an evaporator and concentrated under reduced pressure to obtain a concentrated solution. Step S5: Mix the concentrated solution with sodium carbonate to carry out a lithium precipitation reaction. After the reaction is complete, filter, wash, and dry to obtain lithium carbonate.

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