A lithium carbonate continuous crystallization apparatus

Abstract

The utility model provides a kind of lithium carbonate continuous crystallization equipment, including raw material tank, crystallization device and drying device, raw material tank side is connected with conveying pump one end by pipeline, conveying pump other end is connected with filter one end by pipeline, and filter other end is connected with crystallization device by pipeline, crystallization device side is connected with drying device by pipeline, and control valve is equipped in junction;Drying device includes processor, trachea, gas tank and gas detector, and the gas tank is equipped in the side of processor, and the top of processor is connected with the top of gas tank by trachea, and the top of gas tank is equipped with gas detector. Waste gas generated in drying process is collected by gas tank, which effectively reduces the impact of direct release on the environment, and the overall crystallization quality is improved by filtering the solution.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of continuous lithium carbonate crystallization, specifically to a continuous lithium carbonate crystallization device. Background Technology

[0002] In the production of lithium carbonate, the crystallization process is one of the key steps, and continuous crystallization equipment is an important means to achieve efficient production. Continuous crystallization equipment can realize the continuous feeding, crystallization, separation and discharge of materials, which greatly improves production efficiency and reduces production costs. Therefore, it has been widely used in the field of lithium carbonate production.

[0003] Existing technologies use continuous feeding to crystallize lithium carbonate, which effectively improves crystallization efficiency. However, there are still technical shortcomings in practical applications. The lack of a treatment method for the waste gas generated during the drying process affects the quality of the crystallized lithium carbonate. There is still room for improvement in this aspect. Utility Model Content

[0004] This utility model mainly provides a continuous lithium carbonate crystallization device to solve the technical problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A continuous lithium carbonate crystallization device includes a raw material tank, a crystallization device, and a drying device. One side of the raw material tank is connected to one end of a delivery pump via a pipe, and the other end of the delivery pump is connected to one end of a filter via a pipe. The other end of the filter is connected to the crystallization device via a pipe. One side of the crystallization device is connected to the drying device via a pipe, and a control valve is provided at the connection. The drying device includes a processor, a gas pipe, a gas tank, and a gas detector. The gas tank is located on one side of the processor, and the top of the processor is connected to the top of the gas tank via a gas pipe. The gas detector is located on the top of the gas tank.

[0006] Furthermore, the crystallization device includes a support table, a fixing plate, a heater, a crystallization vessel, and a thermometer. The heater is fixed with fixing plates at both ends, and the fixing plates are located on the top of the support table. One end of the heater is connected to the top of the crystallization vessel through a pipe, and a thermometer is located on the top of the crystallization vessel. The support table is located at the bottom of the crystallization vessel.

[0007] Furthermore, the crystallization vessel includes an outer shell, an inner shell, an observation window, a motor, a fixing rod, and stirring blades. The outer surface of the outer shell is provided with an observation window, the inner shell is provided inside the outer shell, the motor is provided on the top of the outer shell, and the rotating end of the motor is connected to the fixing rod. The outer surface of the fixing rod is provided with stirring blades.

[0008] Furthermore, one side of the processor is connected to the top of the crystallization vessel via a pipe, and a delivery pump is installed at the connection point with the pipe. The gas detector can detect the concentration of waste gas in real time, which facilitates the handling by the staff.

[0009] Furthermore, the area between the outer shell and the inner shell is a cooling zone, and an inlet and an outlet are provided on one side of the outer shell to cool the solution.

[0010] Furthermore, the thermometer can detect the temperature of the solution in real time, which facilitates the adjustment of the solution temperature to improve crystallization efficiency.

[0011] Furthermore, a power supply box is provided on one side of the crystallization device, and the power supply box is connected to the delivery pump, motor, thermometer and gas detector through wires to provide a stable power supply.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: Optimized exhaust gas treatment: The concentration of exhaust gas in the gas tank is monitored in real time by a gas detector. Staff can treat the exhaust gas in a timely manner based on the test results, effectively avoiding pollution to the environment caused by direct emission of exhaust gas, and reducing the impact of impurities such as lithium carbonate dust contained in the exhaust gas on product quality.

[0013] Improved crystallization quality: The solution is pre-treated by a filter to improve the overall purity of the solution. Through the dual action of the cooling layer and the stirring blades, the quality and uniformity of lithium carbonate crystallization are improved while ensuring the crystallization, effectively reducing the impact of local concentrations that are too high or too low.

[0014] Recirculation process: The solution after solid-liquid separation is returned to the crystallization kettle for crystallization through a transfer pump and pipeline on one side of the processor, which effectively improves the utilization rate of the solution and reduces solution loss.

[0015] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a diagram showing the overall structure of the present invention; Figure 3 This is an axonometric view of the overall structure of this utility model; Figure 4 This is a cross-sectional view of the crystallization vessel of this utility model.

[0017] In the diagram: 1. Raw material tank; 11. Transfer pump; 12. Filter; 2. Crystallization device; 21. Support table; 22. Fixing plate; 23. Heater; 24. Crystallization vessel; 241. Outer shell; 242. Inner shell; 243. Observation window; 244. Motor; 245. Fixing rod; 246. Stirring blade; 247. Water inlet; 248. Water outlet; 25. Thermometer; 26. Control valve; 3. Drying device; 31. Processing machine; 32. Gas pipe; 33. Gas tank; 34. Gas detector; 4. Power supply box. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please refer to the appendix carefully. Figure 1 To be continued Figure 4 As shown, a continuous crystallization equipment for lithium carbonate mainly includes a raw material tank 1, a crystallization device 2, and a drying device 3. The various parts are interconnected through pipes and other structures to form a complete continuous crystallization system, which effectively improves production efficiency, reduces production costs, and ensures the quality of lithium carbonate.

[0022] The raw material tank 1 is the starting part of the entire equipment, used to store the lithium carbonate raw material solution to be crystallized. One side of the raw material tank 1 is connected to one end of the transfer pump 11 (specifically a centrifugal pump) through a pipe. The transfer pump 11 serves as a power unit, capable of pumping the solution from the raw material tank 1 and transporting it to the subsequent processing stage. The other end of the transfer pump 11 is connected to one end of the filter 12 through a pipe (using physical means and having a detachable structure for easy replacement). The filter 12 performs preliminary filtration of the raw material solution, removing any potentially large particulate impurities to ensure the smooth progress of the subsequent crystallization process. The filtered solution flows out from the other end of the filter 12 and enters the crystallization device 2 through a pipe.

[0023] The crystallization device 2 is the core part of the lithium carbonate crystallization process. This device includes a support table 21, a fixing plate 22, a heater 23, a crystallization vessel 24, and a thermometer 25. The heater 23 is fixed to the top of the support table 21 at both ends by the fixing plate 22, and one end of the heater 23 is connected to the top of the crystallization vessel 24 through a pipe. The crystallization vessel 24 is the key component in the crystallization device 2 for realizing lithium carbonate crystallization. The support table 21 is provided at the bottom of the vessel, which plays a supporting and fixing role. The top of the crystallization vessel 24 is also equipped with a thermometer 25 (specifically a bimetallic thermometer, which uses two metal strips with different expansion coefficients stacked together. When the temperature changes, the metal strips bend to different degrees, and the temperature value is displayed by pointer or digital display). This thermometer can detect the temperature of the solution in real time, which makes it convenient for the staff to adjust the temperature of the cooling water to improve the crystallization efficiency. The internal structure of the crystallization vessel 24 is ingeniously designed, comprising an outer shell 241, an inner shell 242, an observation window 243, a motor 244, a fixing rod 245, a stirring blade 246, a water inlet 247, and a water outlet 248. The outer surface of the outer shell 241 is equipped with an observation window 243, allowing operators to directly observe the crystallization process of the solution inside the crystallization vessel 24, enabling timely monitoring of the crystallization progress and appropriate operational adjustments. The inner shell 242 is located inside the outer shell 241, forming a cooling zone between them. One side is provided with an inlet 247 and an outlet 248. During the crystallization process, cooling water is introduced into the cooling zone to cool the solution and promote the crystallization and precipitation of lithium carbonate. The top of the outer shell 241 is provided with a motor 244. The rotating end of the motor 244 is connected to a fixed rod 245. The outer surface of the fixed rod 245 is provided with a stirring blade 246. The stirring blade 246 rotates under the drive of the motor 244 to stir the solution in the crystallization vessel 24, so that the lithium carbonate in the solution is evenly distributed, avoiding local concentrations that are too high or too low, thereby improving the uniformity and quality of crystallization. A power supply box 4 is also provided on one side of the crystallization device 2. The power supply box 4 is connected to the delivery pump 11, motor 244, thermometer 25 and gas detector 34 through wires to provide a stable power supply for these devices and ensure the normal operation of the entire device.

[0024] After crystallization in the crystallization device 2, lithium carbonate enters the drying device 3 through a pipeline for further drying. The drying device 3 includes a processor 31, a gas pipe 32, a gas tank 33, and a gas detector 34. The gas tank 33 is located on one side of the processor 31, and the tops of the two are connected by the gas pipe 32. The gas detector 34 (specifically a fixed gas detector and alarm, equipped with a digital display screen to display the gas concentration in real time, and automatically emits an audible and visual alarm signal when the gas concentration reaches a set threshold) is located on the top of the gas tank 33. This allows for real-time detection of the waste gas concentration in the gas tank 33, facilitating timely treatment of the waste gas by the staff. The other side of the processor 31 is connected to the top of the crystallization vessel 24 through a transfer pump 11 and a pipeline, allowing the solution after solid-liquid separation to return to the crystallization vessel 24 for re-crystallization, thereby improving the utilization rate of the solution.

[0025] The specific operation method of this utility model is as follows: The lithium carbonate raw material solution is injected into the raw material tank 1, and then the transfer pump 11 is started to extract the raw material solution and transport it to the filter 12 for filtration. The filtered solution enters the crystallization device 2, and the solution is heated to a suitable temperature by the heater 23. After entering the crystallization kettle 24, uniform crystallization occurs under the synergistic action of the cooling layer and the stirring blade 246. The crystallized solution enters the drying device 3 through the pipeline, and the solution is subjected to solid-liquid separation and drying by the processor 31. The separated solution returns to the crystallization kettle 24 through the pipeline under the action of the transfer pump 11 for re-crystallization. The waste gas generated during the drying process enters the gas tank 33 through the gas pipe 32 and is collected.

[0026] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A continuous lithium carbonate crystallization apparatus, characterized in that, It includes a raw material tank (1), a crystallization device (2) and a drying device (3). One side of the raw material tank (1) is connected to one end of a delivery pump (11) through a pipe. The other end of the delivery pump (11) is connected to one end of a filter (12) through a pipe. The other end of the filter (12) is connected to the crystallization device (2) through a pipe. One side of the crystallization device (2) is connected to the drying device (3) through a pipe, and a control valve (26) is provided at the connection. The drying device (3) includes a processor (31), an air pipe (32), a gas tank (33) and a gas detector (34). The processor (31) has a gas tank (33) on one side, and the top of the processor (31) is connected to the top of the gas tank (33) through the air pipe (32). The top of the gas tank (33) is equipped with a gas detector (34).

2. The lithium carbonate continuous crystallization equipment according to claim 1, characterized in that, The crystallization device (2) includes a support table (21), a fixing plate (22), a heater (23), a crystallization vessel (24), and a thermometer (25). The heater (23) has fixing plates (22) fixed at both ends, and the fixing plates (22) are located on the top of the support table (21). One end of the heater (23) is connected to the top of the crystallization vessel (24) through a pipe, and the top of the crystallization vessel (24) is equipped with a thermometer (25). The bottom of the crystallization vessel (24) is equipped with a support table (21).

3. The lithium carbonate continuous crystallization equipment according to claim 2, characterized in that, The crystallization vessel (24) includes an outer shell (241), an inner shell (242), an observation window (243), a motor (244), a fixing rod (245), and a stirring blade (246). The outer surface of the outer shell (241) is provided with an observation window (243), and the inner shell (242) is provided inside the outer shell (241). The top of the outer shell (241) is provided with a motor (244), and the rotating end of the motor (244) is connected to the fixing rod (245). The outer surface of the fixing rod (245) is provided with a stirring blade (246).

4. The lithium carbonate continuous crystallization equipment according to claim 1, characterized in that, The processor (31) is connected to the top of the crystallization vessel (24) via a pipe on one side, and a delivery pump (11) is provided at the connection with the pipe. The gas detector (34) can detect the concentration of waste gas in real time, which is convenient for staff to handle.

5. A continuous lithium carbonate crystallization apparatus according to claim 3, characterized in that, The area between the outer shell (241) and the inner shell (242) is a cooling zone, and an inlet (247) and an outlet (248) are provided on one side of the outer shell (241) to cool the solution.

6. A continuous lithium carbonate crystallization apparatus according to claim 2, characterized in that, The thermometer (25) can detect the temperature of the solution in real time, which makes it easy to adjust the temperature of the solution to improve the crystallization efficiency.

7. A continuous lithium carbonate crystallization apparatus according to claim 1, characterized in that, The crystallization device (2) is equipped with a power supply box (4) on one side, and the power supply box (4) is connected to the delivery pump (11), motor (244), thermometer (25) and gas detector (34) through wires to provide a stable power supply.

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