Sodium aluminate solution liquid-solid ratio detection method and system and storage medium

Abstract

The invention provides a liquid-solid ratio detection method and system of a sodium aluminate solution and a storage medium, and relates to the technical field of sodium aluminate solution separation. Due to the fact that the liquid level sensor is arranged at the specified height in the quantitative container, under the condition that the main controller receives a liquid level signal collected by the liquid level sensor, it shows that the sodium aluminate solution in the quantitative container reaches the quantitative volume, and then the electric feeding valve can be controlled to be closed; therefore, the sodium aluminate solution in the quantitative container is high in quantitative reliability. The main controller can receive the weight of the to-be-separated sodium aluminate solution which is collected by the weight sensor and flows into the settling tank; the main controller determines the liquid-solid ratio of the to-be-separated sodium aluminate solution from the preset mapping relation table according to the ratio of the collected weight of the to-be-separated sodium aluminate solution to the quantitative volume of the quantitative container, so that the reliability of the finally obtained liquid-solid ratio of the to-be-separated sodium aluminate solution is also high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sodium aluminate solution separation, and particularly relates to a method and system for detecting liquid-solid ratio of sodium aluminate solution and a storage medium. BACKGROUND

[0002] In the preparation process of sodium aluminate solution (such as after the dissolution of bauxite by the Bayer process), the sodium aluminate solution usually contains unreacted solid residues (such as red mud, silicon residue, etc.). The settling tank can make the unreacted solid residues (such as red mud, silicon residue, etc.) slowly precipitate to the tank bottom of the settling tank by gravity settling, to form a bottom flow (thickened slurry), and the clarified sodium aluminate solution (overflow) is located in the upper layer, so as to realize the solid-liquid separation of the sodium aluminate solution. By separating the solid impurities, the settling tank can significantly reduce the suspended solids in the sodium aluminate solution, and provide a purer solution for subsequent processes (such as decomposition, evaporation), to avoid interference of impurities or equipment blockage. In addition, the solid residues collected at the bottom of the settling tank can be further concentrated, which is convenient for subsequent treatment (such as filtration, washing or disposal), and the entrained sodium aluminate solution can be recovered, to improve the utilization rate of raw materials.

[0003] However, in the preparation process of sodium aluminate solution, if the liquid-solid ratio (Liquid-to-Solid Ratio, L / S) in the settling tank is too high (i.e. the proportion of liquid is too large, and the content of solid particles is too low), the collision and flocculation between particles will be weakened, the settling speed will be slow, and the solid-liquid separation will not be complete; the overflow liquid (supernatant) may entrain fine particle suspensions, which affects the purity of subsequent processes (such as decomposition, evaporation), and it is difficult to effectively recover aluminum and alkali in the overflow liquid by filtration or washing; and the energy consumption and cost of subsequent treatment (such as red mud storage or filtration) will be increased. If the liquid-solid ratio (Liquid-to-Solid Ratio, L / S) in the settling tank is too low (i.e. the content of solid is too high, and the proportion of liquid is insufficient), the interaction between solid particles will be enhanced (such as collision, extrusion), the settling resistance will be increased, the settling speed will be slow, and a "thick slurry layer" will be formed, which affects the clarity of the overflow liquid, and even causes the overflow liquid to entrain fine particles (running mud); the bottom flow pump of the settling tank is difficult to transport, the energy consumption is increased, and even the pipeline or pump body is blocked; the load of the stirring device of the settling tank is increased, which affects the service life of the equipment.

[0004] At present, the liquid-solid ratio of the sodium aluminate solution in the settling tank can be measured manually, but the manual measurement of the liquid-solid ratio of the sodium aluminate solution in the settling tank has low efficiency and poor reliability. SUMMARY

[0005] The present application provides a method and system for detecting liquid-solid ratio of sodium aluminate solution and a storage medium, to solve the problem of low efficiency and poor reliability of manual measurement of the liquid-solid ratio of the sodium aluminate solution in the settling tank in the prior art.

[0006] In a first aspect, the present application provides a method for detecting the liquid-solid ratio of a sodium aluminate solution, which is applied to a system for detecting the liquid-solid ratio of a sodium aluminate solution. The system comprises a man-machine interaction module, a quantitative container, a main controller, a weight sensor, a liquid level sensor, and an electric feeding valve. The quantitative container is connected to a settling tank for preparing the sodium aluminate solution through a feeding pipe, and the electric feeding valve is arranged on the feeding pipe. The liquid level sensor is arranged at a specified height in the quantitative container, and the weight sensor is arranged at the bottom of the settling tank. The method provided by the present application comprises the following steps:

[0007] The main controller controls the electric feeding valve to open in response to a detection instruction input by a user from the man-machine interaction module.

[0008] The main controller controls the electric feeding valve to close when receiving a liquid level signal collected by the liquid level sensor.

[0009] The main controller receives the weight of the sodium aluminate solution to be separated flowing into the settling tank from the weight sensor.

[0010] The main controller determines the liquid-solid ratio of the sodium aluminate solution to be separated from a preset mapping relationship table according to the ratio of the weight of the sodium aluminate solution to be separated to the quantitative volume of the quantitative container.

[0011] In some embodiments, the system provided by the present application further comprises an electric discharge valve arranged on a discharge pipe of the settling tank. After determining the liquid-solid ratio of the sodium aluminate solution to be separated, the method provided by the present application further comprises the following steps:

[0012] The main controller controls the opening degree of the electric discharge valve to decrease when determining that the liquid-solid ratio of the sodium aluminate solution to be separated is greater than a set upper limit threshold of the liquid-solid ratio, wherein the decrease amplitude of the opening degree is positively correlated with the difference between the liquid-solid ratio of the sodium aluminate solution to be separated and the upper limit threshold of the liquid-solid ratio.

[0013] In some embodiments, the system provided by the present application further comprises an electric discharge valve arranged on a discharge pipe of the settling tank. After determining the liquid-solid ratio of the sodium aluminate solution to be separated, the method provided by the present application further comprises the following steps:

[0014] The main controller controls the opening degree of the electric discharge valve to increase when determining that the liquid-solid ratio of the sodium aluminate solution to be separated is less than a set lower limit threshold of the liquid-solid ratio, wherein the increase amplitude of the opening degree is positively correlated with the difference between the liquid-solid ratio of the sodium aluminate solution to be separated and the lower limit threshold of the liquid-solid ratio.

[0015] In some embodiments, the system further comprises an electric discharge valve arranged on a discharge pipe of the settling tank. After determining the liquid-solid ratio of the sodium aluminate solution to be separated, the method provided by the present application further comprises the following steps:

[0016] The main controller determines the change trend of the liquid-solid ratio of the sodium aluminate solution according to the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated and the pre-recorded liquid-solid ratio of the sodium aluminate solution to be separated determined at every preset period before;

[0017] The main controller inputs the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated, the pre-recorded liquid-solid ratio of the sodium aluminate solution to be separated determined at every preset period before, and the change trend of the liquid-solid ratio of the sodium aluminate solution into the pre-trained liquid-solid ratio prediction model to determine whether the liquid-solid ratio of the sodium aluminate solution to be separated in the settling tank after a preset time in the future will reach the preset upper limit threshold of the liquid-solid ratio;

[0018] If the liquid-solid ratio upper limit threshold will be reached, the main controller controls the opening and closing degree of the electric discharge valve to decrease by a preset amplitude.

[0019] In some embodiments, the system further comprises an electric discharge valve arranged at a discharge pipe of the settling tank, and after determining the liquid-solid ratio of the sodium aluminate solution to be separated, the method provided by the application further comprises:

[0020] The main controller determines the change trend of the liquid-solid ratio of the sodium aluminate solution according to the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated and the pre-recorded liquid-solid ratio of the sodium aluminate solution to be separated determined at every preset period before;

[0021] The main controller inputs the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated, the pre-recorded liquid-solid ratio of the sodium aluminate solution to be separated determined at every preset period before, and the change trend of the liquid-solid ratio of the sodium aluminate solution into the pre-trained liquid-solid ratio prediction model to determine whether the liquid-solid ratio of the sodium aluminate solution to be separated in the settling tank after a preset time in the future will be lower than the preset lower limit threshold of the liquid-solid ratio;

[0022] If the liquid-solid ratio lower limit threshold will be reached, the main controller controls the opening and closing degree of the electric discharge valve to increase by a preset amplitude.

[0023] In some embodiments, the method provided by the application further comprises:

[0024] The main controller controls the detection value of the weight sensor to be zeroed in response to the detection instruction.

[0025] In some embodiments, the system provided by the application further comprises an overflow pipe in communication with the quantitative container, the overflow pipe being located above the specified height and having a height difference from the specified height less than a set difference threshold, and the main controller receives the weight of the sodium aluminate solution to be separated in the settling tank from the weight sensor, comprising:

[0026] The main controller waits for a preset first time period and receives the weight of the sodium aluminate solution to be separated in the settling tank from the weight sensor.

[0027] In some embodiments, the system provided in this application further includes an automatic rinsing module, which is connected to a metering container. The bottom of the metering container is also connected to a discharge pipe equipped with an electric discharge valve. After receiving the weight of the sodium aluminate solution to be separated in the settling tank from a weight sensor, the method provided in this application further includes:

[0028] The main controller controls the opening of the electric unloading valve;

[0029] After a preset second time period, the main controller controls the automatic rinsing module to rinse the residual sodium aluminate solution in the quantitative container.

[0030] Secondly, this application also provides a liquid-to-solid ratio detection system for sodium aluminate solution, including a human-machine interface module, a metering container, a main controller, a weight sensor, a level sensor, and an electric feed valve. The metering container is connected to the settling tank for preparing the sodium aluminate solution through a feed pipe. The electric feed valve is located in the feed pipe. The level sensor is located at a specified height inside the metering container. The weight sensor is located at the bottom of the settling tank. The main controller is used to execute the method provided in the first aspect of this application.

[0031] Thirdly, this application also provides a storage medium storing a computer program, which, when executed by a main controller, causes the computer to perform the method provided in the first aspect of this application.

[0032] This application provides a method, system, and storage medium for detecting the liquid-to-solid ratio of a sodium aluminate solution. The main controller can control the opening of an electric feed valve. At this time, the sodium aluminate solution in the settling tank flows into a metering container. Since the level sensor is positioned at a designated height within the metering container, the main controller, upon receiving the level signal from the sensor, indicates that the sodium aluminate solution in the metering container has reached the required volume, and can then control the electric feed valve to close. This ensures high reliability in determining the measured volume of sodium aluminate solution in the metering container. The main controller can also receive the weight of the sodium aluminate solution flowing into the settling tank from a weight sensor. Based on the ratio of the collected weight to the measured volume of the metering container, the main controller determines the liquid-to-solid ratio of the sodium aluminate solution from a preset mapping table. This also ensures high reliability in determining the liquid-to-solid ratio of the final sodium aluminate solution, and eliminates the need for manual operation, resulting in high efficiency. Attached Figure Description

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0034] Figure 1 A structural schematic diagram of a liquid-solid ratio detection system of a sodium aluminate solution provided by an embodiment of the present application;

[0035] Figure 2 A flowchart of a liquid-solid ratio detection method of a sodium aluminate solution provided by an embodiment of the present application. DETAILED DESCRIPTION

[0036] In the following, the embodiments of the present disclosure will be described with reference to the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present disclosure. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0037] In the drawings, various structural schematic diagrams according to embodiments of the present disclosure are shown. These drawings are not drawn to scale, in which some details are exaggerated for the purpose of clear expression, and some details can be omitted. The shapes of various regions, layers shown in the drawings, and their relative size, positional relationship may deviate in actuality due to manufacturing tolerances or technical limitations, and the skilled in the art can additionally design regions / layers with different shapes, sizes, relative positions according to actual needs.

[0038] In the context of the present disclosure, when a layer / element is referred to as being located "on" another layer / element, the layer / element can be directly located on the other layer / element, or there can be an intermediate layer / element between them. In addition, if a layer / element is located "on" another layer / element in one orientation, it can be located "under" the other layer / element when the orientation is reversed.

[0039] In the following, the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. In the following, the embodiments of the present application will be described with reference to the drawings.

[0040] The embodiment of the present application provides a liquid-solid ratio detection method of a sodium aluminate solution, which is applied to a liquid-solid ratio detection system of a sodium aluminate solution. As shown in Figure 1As shown, the system provided by the embodiment of the present application includes a man-machine interaction module (not shown in the figure), a quantitative container 101, a main controller (not shown in the figure), a weight sensor 106, a liquid level sensor 105, and an electric feeding valve 103. The quantitative container 101 is connected to a settling tank 102 for preparing sodium aluminate solution through a feeding pipe. The electric feeding valve 103 is arranged on the feeding pipe. The liquid level sensor 105 is arranged at a specified height in the quantitative container 101. The weight sensor 106 is arranged at the bottom of the settling tank 102. As shown in the figure, Figure 2 As shown, the method provided by the embodiment of the present application includes:

[0041] S201: The main controller controls the electric feeding valve 103 to open in response to the detection instruction input by the user from the man-machine interaction module.

[0042] The man-machine interaction module can be, but is not limited to, a touch screen. After the electric feeding valve 103 is opened, the sodium aluminate solution in the settling tank 102 flows into the quantitative container 101 through the feeding pipe.

[0043] It should be noted that when the detection instruction is responded to, the main controller can also control the detection value of the weight sensor 106 to be zeroed, so as to complete the zero position calibration of the weight sensor 106 and improve the reliability of subsequent weight measurement.

[0044] S202: The main controller controls the electric feeding valve 103 to close in the case that the liquid level signal collected by the liquid level sensor 105 is received.

[0045] Since the liquid level sensor 105 is arranged at the specified height in the quantitative container 101, when the liquid level signal collected by the liquid level sensor 105 is received, it indicates that the sodium aluminate solution in the quantitative container 101 has reached the quantitative volume (such as 20L), and then the electric feeding valve 103 can be controlled to be closed. In this way, the reliability of the sodium aluminate solution in the quantitative container 101 reaching the quantitative volume is high.

[0046] S203: The main controller receives the weight of the sodium aluminate solution to be separated in the settling tank 102 collected by the weight sensor 106.

[0047] Specifically, the system provided by the embodiment of the present application further includes an overflow pipe 107. The overflow pipe 107 is connected to the quantitative container 101. The overflow pipe 107 is located above the specified height, and the height difference between the overflow pipe 107 and the specified height is less than a set difference threshold. For example, the main controller waits for a preset first time length (such as 10s) to wait for the excess sodium aluminate solution (i.e., the sodium aluminate solution exceeding the quantitative volume) in the quantitative container 101 to overflow from the overflow pipe 107, and then receives the weight of the sodium aluminate solution to be separated in the settling tank 102 collected by the weight sensor 106, so that the reliability of the weight of the sodium aluminate solution to be separated received is higher.

[0048] In addition, the system provided by the embodiment of the present application further comprises an automatic flushing module (not shown in the drawings), the automatic flushing module is in communication with the quantitative container 101, the bottom of the quantitative container 101 is further in communication with a discharge pipe, the discharge pipe is provided with an electric discharge valve 104, after receiving the weight of the sodium aluminate solution to be separated collected by the weight sensor 106 in the settling tank 102, the method provided by the embodiment of the present application further comprises:

[0049] The main controller controls the electric discharge valve 104 to open; after a preset second time length (such as 10s), the main controller indicates that the sodium aluminate solution to be separated has been discharged, and then controls the automatic flushing module to flush the residual sodium aluminate solution in the quantitative container 101. In this way, the sodium aluminate solution in the quantitative container 101 can be completely cleaned.

[0050] S204: The main controller determines the liquid-solid ratio of the sodium aluminate solution to be separated from a preset mapping relationship table according to the ratio of the weight of the sodium aluminate solution to be separated and the quantitative volume of the quantitative container 101.

[0051] The preset mapping relationship table can be shown in Table 1 as follows.

[0052]

[0053] Table 1

[0054] In summary, the method for detecting the liquid-solid ratio of the sodium aluminate solution provided by the embodiment of the present application, the main controller can control the electric feeding valve 103 to open. At this time, the sodium aluminate solution in the settling tank 102 flows into the quantitative container 101. Since the liquid level sensor 105 is arranged at a specified height in the quantitative container 101, when the main controller receives the liquid level signal collected by the liquid level sensor 105, it indicates that the sodium aluminate solution in the quantitative container 101 has reached the quantitative volume, and then the electric feeding valve 103 can be controlled to be closed. In this way, the reliability of the sodium aluminate solution in the quantitative container 101 reaching the quantitative volume is high. The main controller can receive the weight of the sodium aluminate solution to be separated flowing into the settling tank 102 collected by the weight sensor 106; the main controller determines the liquid-solid ratio of the sodium aluminate solution to be separated from a preset mapping relationship table according to the ratio of the weight of the sodium aluminate solution to be separated and the quantitative volume of the quantitative container 101. In this way, the reliability of the liquid-solid ratio of the sodium aluminate solution to be separated obtained finally is also high, and the efficiency is high without relying on manual operation.

[0055] According to the invention test, the reliability of the liquid-solid ratio of the sodium aluminate solution to be separated is shown in Table 2 as follows.

[0056]

[0057] Table 2

[0058] In some embodiments, the system provided by the present application further comprises an electric discharge valve arranged in the discharge pipe of the settling tank 102. After S204 described above, the method provided by the present application further comprises: in the case that the liquid-solid ratio of the sodium aluminate solution to be separated is determined to be greater than the upper limit threshold of the liquid-solid ratio, the main controller determines that the liquid-solid ratio of the sodium aluminate solution in the settling tank 102 is too high, and controls the opening degree of the electric discharge valve to decrease, wherein the decrease range of the opening degree is positively correlated with the difference between the liquid-solid ratio of the sodium aluminate solution to be separated and the upper limit threshold of the liquid-solid ratio, so as to reduce the liquid discharge rate of the electric discharge valve, and to increase the liquid-solid ratio of the sodium aluminate solution in the settling tank 102.

[0059] In some embodiments, the system provided by the present application further comprises an electric discharge valve arranged in the discharge pipe of the settling tank 102. After S204 described above, the method provided by the present application further comprises:

[0060] In the case that the liquid-solid ratio of the sodium aluminate solution to be separated is determined to be less than the lower limit threshold of the liquid-solid ratio, the main controller determines that the liquid-solid ratio of the sodium aluminate solution in the settling tank 102 is too low, and controls the opening degree of the electric discharge valve to increase, wherein the increase range of the opening degree is positively correlated with the difference between the liquid-solid ratio of the sodium aluminate solution to be separated and the lower limit threshold of the liquid-solid ratio, so as to increase the liquid discharge rate of the electric discharge valve, and to further increase the liquid-solid ratio of the sodium aluminate solution in the settling tank 102.

[0061] In addition, the system further comprises an electric discharge valve arranged in the discharge pipe of the settling tank 102. After S204 described above, the method provided by the present application further comprises: the main controller determines the change trend of the liquid-solid ratio of the sodium aluminate solution according to the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated and the pre-recorded liquid-solid ratio of the sodium aluminate solution to be separated determined at every other preset period in the past; the main controller inputs the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated, the pre-recorded liquid-solid ratio of the sodium aluminate solution to be separated determined at every other preset period in the past, and the change trend of the liquid-solid ratio of the sodium aluminate solution into the pre-trained liquid-solid ratio prediction model, to determine whether the liquid-solid ratio of the sodium aluminate solution to be separated in the settling tank 102 will reach the preset upper limit threshold of the liquid-solid ratio after a preset time in the future; if the liquid-solid ratio will reach the upper limit threshold, the main controller controls the opening degree of the electric discharge valve to decrease by a preset range. In this way, the early prevention operation of the too high liquid-solid ratio of the sodium aluminate solution can be realized, and the adverse consequences can be avoided.

[0062] In some embodiments, the system further comprises an electric discharge valve arranged at a discharge pipe of the settling tank 102, and after S204, the method further comprises: determining, by the host controller, a variation trend of the liquid-solid ratio of the sodium aluminate solution according to the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated and the pre-recorded liquid-solid ratio of the sodium aluminate solution to be separated determined at each preset period in the past; inputting, by the host controller, the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated, the pre-recorded liquid-solid ratio of the sodium aluminate solution to be separated determined at each preset period in the past, and the variation trend of the liquid-solid ratio of the sodium aluminate solution to the pre-trained liquid-solid ratio prediction model, to determine whether the liquid-solid ratio of the sodium aluminate solution to be separated in the settling tank 102 after a preset time in the future will be lower than a preset lower limit threshold of the liquid-solid ratio; and increasing, by the host controller, the opening degree of the electric discharge valve by a preset amplitude if the lower limit threshold of the liquid-solid ratio is reached. In this way, the early prevention operation of the liquid-solid ratio of the sodium aluminate solution being too low can be realized, and adverse consequences can be avoided.

[0063] In addition, the application further provides a liquid-solid ratio detection system of a sodium aluminate solution, which comprises a man-machine interaction module, a quantitative container 101, a host controller, a weight sensor 106, a liquid level sensor 105, and an electric feeding valve 103. The quantitative container 101 is connected to a settling tank 102 for preparing a sodium aluminate solution through a feeding pipe, the electric feeding valve 103 is arranged at the feeding pipe, the liquid level sensor 105 is arranged at a specified height in the quantitative container 101, the weight sensor 106 is arranged at the bottom of the settling tank 102, and the host controller is used to execute the method provided in the above embodiments of the application.

[0064] In addition, the application further provides a storage medium storing a computer program, which, when executed by a host controller, causes a computer to execute the method provided in the above embodiments of the application.

[0065] In the above description, the technical details such as the configuration of each layer are not described in detail. However, those skilled in the art should understand that the layers, regions and the like with the required shapes can be formed by various technical means. In addition, those skilled in the art can also design methods that are not exactly the same as the above-described methods in order to form the same structure. In addition, although each embodiment is described separately above, this does not mean that the measures in each embodiment cannot be used advantageously in combination.

[0066] Although the preferred embodiments of the application have been described, those skilled in the art can make further changes and modifications to the embodiments once they understand the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the application.

[0067] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A method for detecting the liquid-solid ratio of a sodium aluminate solution, characterized by, The application discloses a liquid-solid ratio detection system applied to a sodium aluminate solution, and the system comprises a man-machine interaction module, a quantitative container, a main controller, a weight sensor, a liquid level sensor and an electric feeding valve. The main controller controls the electric feeding valve to open in response to the detection instruction input by the user from the man-machine interaction module. The main controller controls the electric feeding valve to close when receiving the liquid level signal collected by the liquid level sensor. The main controller receives the weight of the sodium aluminate solution to be separated flowing into the settling tank collected by the weight sensor. The main controller determines the liquid-solid ratio of the sodium aluminate solution to be separated from a preset mapping relationship table according to the ratio of the collected weight of the sodium aluminate solution to be separated to the quantitative volume of the quantitative container.

2. The method of claim 1, wherein, The system further comprises an electric discharge valve arranged in a discharge pipe of the settling tank, and the method further comprises the following steps after the liquid-solid ratio of the sodium aluminate solution to be separated is determined. The main controller controls the opening and closing degree of the electric discharge valve to decrease when the liquid-solid ratio of the sodium aluminate solution to be separated is greater than a preset upper limit threshold of the liquid-solid ratio, and the decrease amplitude of the opening and closing degree is positively correlated with the difference between the liquid-solid ratio of the sodium aluminate solution to be separated and the upper limit threshold of the liquid-solid ratio.

3. The method of claim 1, wherein, The system further comprises an electric discharge valve arranged in a discharge pipe of the settling tank, and the method further comprises the following steps after the liquid-solid ratio of the sodium aluminate solution to be separated is determined. The main controller controls the opening and closing degree of the electric discharge valve to increase when the liquid-solid ratio of the sodium aluminate solution to be separated is less than a preset lower limit threshold of the liquid-solid ratio, and the increase amplitude of the opening and closing degree is positively correlated with the difference between the liquid-solid ratio of the sodium aluminate solution to be separated and the lower limit threshold of the liquid-solid ratio.

4. The method of claim 1, wherein, The system further comprises an electric discharge valve arranged in a discharge pipe of the settling tank, and the method further comprises the following steps after the liquid-solid ratio of the sodium aluminate solution to be separated is determined. The main controller determines the change trend of the liquid-solid ratio of the sodium aluminate solution according to the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated and the liquid-solid ratio of the sodium aluminate solution to be separated determined at every preset period previously. The main controller inputs the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated, the liquid-solid ratio of the sodium aluminate solution to be separated determined at every preset period previously and the change trend of the liquid-solid ratio of the sodium aluminate solution into a pre-trained liquid-solid ratio prediction model to determine whether the liquid-solid ratio of the sodium aluminate solution to be separated in the settling tank will reach the preset upper limit threshold of the liquid-solid ratio after a preset time length in the future. If the liquid-solid ratio upper limit threshold will be reached, the main controller controls the opening and closing degree of the electric discharge valve to decrease by a preset amplitude.

5. The method of claim 1, wherein, The system further comprises an electric discharge valve arranged in a discharge pipe of the settling tank, and the method further comprises: After the liquid-solid ratio of the sodium aluminate solution to be separated is determined, the main controller determines a variation trend of the liquid-solid ratio of the sodium aluminate solution according to the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated and the pre-recorded liquid-solid ratio of the sodium aluminate solution to be separated determined at every preset period before; The main controller inputs the currently acquired liquid-solid ratio of the sodium aluminate solution to be separated, the pre-recorded liquid-solid ratio of the sodium aluminate solution to be separated determined at every preset period before, and the variation trend of the liquid-solid ratio of the sodium aluminate solution into a pre-trained liquid-solid ratio prediction model to determine whether the liquid-solid ratio of the sodium aluminate solution to be separated in the settling tank will be lower than a preset lower limit threshold of the liquid-solid ratio after a preset time length in the future. If the lower limit threshold of the liquid-solid ratio will be reached, the main controller controls the opening and closing degree of the electric discharge valve to increase by a preset amplitude.

6. The method of claim 1, wherein, The method further comprises: The main controller controls the detection value of the weight sensor to be zeroed in response to the detection instruction.

7. The method of claim 1, wherein, The system further comprises an overflow pipe in communication with the quantitative container, the overflow pipe being located above the specified height and having a height difference from the specified height less than a set difference threshold, and the main controller receives the weight of the sodium aluminate solution to be separated in the settling tank from the weight sensor, comprising: The main controller waits for a preset first time length to receive the weight of the sodium aluminate solution to be separated in the settling tank from the weight sensor.

8. The method according to any one of claims 1 to 7, characterized in that, The system further comprises an automatic flushing module in communication with the quantitative container, the bottom of the quantitative container further having a discharge pipe in communication, and the discharge pipe being provided with an electric discharge valve, and after the weight of the sodium aluminate solution to be separated in the settling tank is received from the weight sensor, the method further comprises: The main controller controls the electric discharge valve to be opened; The main controller controls the automatic flushing module to flush the residual sodium aluminate solution in the quantitative container after a preset second time length.

9. A liquid-to-solid ratio detection system for a sodium aluminate solution, characterized by, The system comprises a human-computer interaction module, a quantitative container, a main controller, a weight sensor, a liquid level sensor, and an electric feeding valve, the quantitative container being in communication with a settling tank for preparing a sodium aluminate solution through a feeding pipe, the electric feeding valve being arranged in the feeding pipe, the liquid level sensor being arranged at a specified height in the quantitative container, the weight sensor being arranged at the bottom of the settling tank, and the main controller being configured to execute the method of any one of claims 1-8.

10. A storage medium storing a computer program, characterized by The computer program is executed by the main controller to cause the computer to execute the method of any one of claims 1-8. The computer program is executed by the main controller to cause the computer to execute the method of any one of claims 1-8.

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