A dense medium separation process density control method and system

Abstract

This invention relates to a density control method and system for a heavy medium separation process. The method includes: inputting the actual density of the dilute medium to a dilute medium density controller and outputting a set dilute medium level; controlling the dilute medium tank level to reach the set dilute medium level to ensure the dilute medium tank density is within a preset range; inputting the set dilute medium level and the actual dilute medium level to a dilute medium level controller and outputting the opening degree of a dilute medium water supply valve; controlling the opening degree of the dilute medium water supply valve to reach the set dilute medium level; inputting the set desliming flow rate and the actual desliming flow rate to a desliming flow rate controller and outputting the opening degree of a desliming water supply valve; controlling the opening degree of the desliming water supply valve to reach the set desliming flow rate; and inputting the set combined medium density and the actual combined medium density to a combined medium density intelligent controller and outputting the opening degree of a combined medium diversion valve; controlling the opening degree of the combined medium diversion valve to reach the set combined medium density. Its advantage is that it replaces traditional manual operation and achieves precise adjustment of the combined medium density under complex working conditions.

Description

Technical Field

[0001] This invention relates to the field of intelligent control technology for coal preparation production processes, and in particular to a density control method and system for heavy media separation processes, a storage device, and a computer-readable storage medium. Background Technology

[0002] The specific gravity of the separating medium used in heavy media separation, also known as the density of the heavy medium, lies between the specific gravity of the high and low specific gravity mineral particles being separated. Throughout the separation process, controlling the density of the heavy medium directly affects the separation effect. Too low a density will cause some clean coal to sink, resulting in clean coal loss; too high a density will cause high-density materials to float, increasing the ash content of the clean coal and reducing the quality of the clean coal product. Simultaneously, if the liquid level is too high, density adjustment will lag, and when production stops, the backflow of the medium in the pipelines and hydrocyclones will cause the medium tank to overflow, resulting in medium loss; conversely, if the liquid level is too low, the hydrocyclone pressure cannot be guaranteed, affecting normal production.

[0003] In recent years, heavy media separation technology has made continuous innovation and development in terms of processes and equipment. However, in terms of automated production control, most of the time, only the centralized start-up and shutdown control of production equipment has been achieved, while the control of separation process parameters remains at the level of manual operation. Therefore, the degree of automation of the heavy media separation process needs to be improved. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a density control method and system for heavy medium separation process, which solves the technical problem of low accuracy of parameters in heavy medium separation process by manual adjustment.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] In a first aspect, embodiments of the present invention provide a density control method for a heavy medium separation process, comprising: using a dilute medium density controller to control the density of a dilute medium tank, specifically comprising: inputting the actual density of the dilute medium to the dilute medium density controller, the dilute medium density controller outputting a dilute medium set liquid level, so as to control the liquid level of the dilute medium tank to reach the dilute medium set liquid level, so that the density of the dilute medium tank is within a preset range.

[0009] The dilute medium level controller is used to control the liquid level in the dilute medium tank. Specifically, it includes: inputting the dilute medium set liquid level and the actual dilute medium liquid level into the dilute medium level controller, and the dilute medium level controller outputting the opening degree of the dilute medium water supply valve, so as to make the liquid level in the dilute medium tank reach the dilute medium set liquid level by controlling the opening degree of the dilute medium water supply valve.

[0010] The opening of the desliming water supply valve is controlled by a desliming flow controller. Specifically, the desliming flow controller is input with a desliming set flow rate and an actual desliming flow rate. The desliming flow controller outputs the opening of the desliming water supply valve so that the desliming flow rate reaches the desliming set flow rate by controlling the opening of the desliming water supply valve.

[0011] The density of the medium tank is controlled by a medium density intelligent controller, which specifically includes: inputting the medium set density and the medium actual density into the medium density intelligent controller, and the medium density intelligent controller outputting the opening degree of the medium diversion valve, so as to make the medium tank density reach the medium set density by controlling the opening degree of the medium diversion valve.

[0012] The dilute medium level controller, the desliming flow controller, and the combined medium density intelligent controller all employ a PI control algorithm. The PI control algorithm is as follows:

[0013]

[0014] in, For controller output, This is the controller output from the previous moment. The difference between the controller input parameters at the current moment. This is the difference between the controller input parameters at the previous moment. These are experience points.

[0015] This invention proposes a density control method for a heavy medium separation process. It designs a dilute medium density controller to output a set dilute medium level based on the actual density of the dilute medium. This set dilute medium level is the level the dilute medium tank is expected to reach in the next moment. Furthermore, it designs a dilute medium level controller that outputs the opening degree of the corresponding dilute medium water supply valve based on the difference between the set dilute medium level and the actual dilute medium level in the tank. The dilute medium water supply valve is then adjusted according to the opening degree output by the set dilute medium level controller. Since the liquid level in the dilute medium tank is affected by the water volume, and the density in the tank is also affected by the liquid level, adjusting the water volume entering the tank adjusts the liquid level, ensuring that the liquid level inside the tank reaches the set dilute medium level. Because the liquid level inside the tank changes, the density inside the tank also changes accordingly, thus achieving the adjustment of the density inside the dilute medium tank by adjusting the set dilute medium level. Furthermore, a desliming flow controller was designed to output the opening degree of the desliming water supply valve based on the set and actual desliming flow rates. This valve is then controlled according to the desliming flow controller's output, adjusting the desliming flow rate to reach the set flow rate. Additionally, a combined medium density intelligent controller was designed to output the opening degree of the combined medium diversion valve based on the set and actual combined medium density. This valve is then controlled to regulate the amount of medium entering the combined medium tank, thereby controlling the tank density to reach the set density. Compared to related technologies, this application can replace traditional manual operation, enabling dynamic adjustment of the circulating medium under complex operating conditions and improving the accuracy of density regulation in the heavy medium separation process. This effectively controls the combined medium density near the set point, ensuring washing and beneficiation effects, increasing clean coal production, and guaranteeing safe production. It also reduces system failure rate, labor intensity, and medium consumption, further improving economic efficiency.

[0016] Optionally, the specific control rules of the rarefied density controller include:

[0017] exist In this case, ;

[0018] exist In this case, ;

[0019] exist In this case, ;

[0020] in, For the actual density of rare earth elements, Set the liquid level for the dilute medium. , , This is the lower limit of the dilute medium density. This represents the upper limit of the rarefied density. Set a lower limit for the liquid level of the dilute medium. The upper limit set for the liquid level. The average of the upper and lower limits set for the liquid level.

[0021] By using a pre-designed dilute medium density controller, the set liquid level of the dilute medium is adjusted according to its actual density, so that the density inside the dilute medium tank can be controlled near the set density. Specifically:

[0022] When the actual density of rare earth exist and When within the range, the dilute medium is set at the liquid level. The value is The higher the dilute level, the lower the corresponding dilute density. Therefore, when the actual density of the dilute increases to greater than [a certain value], [the situation becomes more complex]. At that time, the dilute medium setting level should also be raised to When the actual density of the rarefied medium decreases to less than At that time, the dilute medium setting level should also be reduced to... .

[0023] Optionally, the specific control rules of the dilute medium level controller include:

[0024] exist In this case, ;

[0025] exist In this case, ;

[0026] in, Set the liquid level for the dilute medium. This represents the actual level of the dilute medium. For the opening degree of the dilute medium water supply valve, Based on experience points. .

[0027] By using a pre-designed dilute medium level controller, the opening degree of the dilute medium replenishment valve is controlled differently according to the difference between the set dilute medium level and the actual dilute medium level, thereby achieving precise control of the liquid level inside the dilute medium tank.

[0028] Optionally, and Determined by the following rules:

[0029] exist In this case, ;

[0030] exist In this case, ;

[0031] exist In this case, ;

[0032] exist In this case, ;

[0033] exist In this case, ;

[0034] exist In this case, ;

[0035] exist In this case, ;

[0036] in, Based on experience points. , This is the upper limit of the opening of the dilute medium water supply valve. This is the lower limit of the opening of the dilute medium water supply valve.

[0037] When the actual liquid level of the dilute medium With dilute medium set liquid level The difference is and When the interval is within the specified range, the opening of the dilute medium water supply valve should be reduced to a smaller value. This lowers the liquid level and reduces the deviation of the dilute medium level. When the actual dilute medium level... With dilute medium set liquid level The difference is greater than At that time, the control output should be smaller, adjusted to This lowers the liquid level, thereby quickly reducing the difference between the set liquid level and the actual liquid level of the dilute medium. When the set liquid level of the dilute medium... With the actual liquid level of dilute medium The difference is and When the water level is within the specified range, the opening of the water supply valve should be increased to [value missing]. This is to raise the liquid level and reduce the deviation of the dilute medium level. When the dilute medium is set at a certain level... With the actual liquid level of dilute medium The difference is greater than At that time, the control output should be larger, adjusted to This increases the liquid level, thereby rapidly reducing the difference between the set liquid level and the actual liquid level of the dilute medium. This allows for control of the dilute medium density and liquid level, reducing their impact on the density during the mixing process.

[0038] Optionally, the specific control rules of the desliming flow controller include:

[0039] exist In this case, ;

[0040] exist In this case, ;

[0041] exist In this case, ;

[0042] in, To determine the opening degree of the desiccant supply valve, This is the upper limit of the opening of the desiccant supply valve. This is the lower limit of the opening of the desiccant replenishment valve.

[0043] By designing a desliming flow controller, the opening of the desliming water supply valve is adjusted according to the desliming set flow rate and the actual desliming flow rate, so that the desliming flow rate is controlled near the dilute medium set flow rate, thereby reducing the impact of desliming flow rate fluctuations on the density of the medium mixing process.

[0044] Optionally, the specific control rules of the combined density intelligent controller include:

[0045] exist In this case, ;

[0046] exist In this case, ;

[0047] in, To set the density for the combination, For the actual density of the medium, For the opening degree of the diversion valve, Based on experience points. .

[0048] By using a pre-designed intelligent controller for medium density, the opening of the medium diversion valve is controlled differently based on the difference between the set density and the actual density of the medium, thereby achieving precise control of the density inside the medium tank.

[0049] Optionally, Determined by the following rules:

[0050] exist In this case, ;

[0051] exist In this case, ;

[0052] exist In this case, ;

[0053] exist In this case, ;

[0054] exist In this case, ;

[0055] exist In this case, ;

[0056] exist In this case, ;

[0057] in, Based on experience points. , This is the upper limit of the opening of the diverter valve. This is the lower limit of the opening of the diverter valve.

[0058] When the actual density of the composite With the set density of the medium The difference is and When the flow is within the specified range, the opening of the diverter valve should be reduced to a smaller value. This reduces the density and decreases the density deviation of the composite medium. When the actual density of the composite medium... With the set density of the medium The difference is greater than At that time, the control output should be smaller, adjusted to This reduces the density, thereby quickly decreasing the difference between the set density and the feedback. When the combined medium sets the density... Actual density of the composite The difference is and When the flow is within the specified range, the opening of the diverter valve should be increased to [value missing]. This increases density and reduces density deviation in the composite medium. When the composite medium has a set density... Actual density of the composite The difference is greater than At that time, the control output should be larger, adjusted to This increases density, thereby rapidly reducing the difference between the set density and the actual density of the dielectric. And... In the case of and in In the case where the numerical ranges do not correspond, they are respectively and This is mainly because if the actual density of the combined medium is greater than the set density, and the rule is set at this point... When the current process cannot be controlled in a timely and effective manner, the control effect is poor. Therefore, when the difference is... When this happens, the corresponding control output needs to be adjusted.

[0059] Secondly, embodiments of the present invention provide a density control system for a heavy medium separation process, comprising: a dilute medium tank; a first density meter for collecting the actual density inside the dilute medium tank; a level gauge for collecting the actual liquid level inside the dilute medium tank; a dilute medium water supply valve, the opening of which is adjusted by a dilute medium level controller to adjust the amount of water entering the dilute medium tank; a desliming water supply valve, the opening of which is adjusted by a desliming flow controller to adjust the amount of water in the desliming process; a flow meter for collecting the actual desliming flow rate; a combined medium tank; a second density meter for collecting the actual density inside the combined medium tank; and a combined medium diversion valve, the opening of which is adjusted by a combined medium density intelligent controller to adjust the amount of medium entering the combined medium tank. The density control system for a heavy medium separation process provided by the technical solution of the present invention, since it is used to implement the steps of the density control method for a heavy medium separation process provided in the first aspect of the present invention, possesses all the technical effects of the density control method for a heavy medium separation process, which will not be elaborated further here.

[0060] Thirdly, embodiments of the present invention provide a storage device having a computer program stored thereon, wherein the program, when executed by a processor, implements the steps of the method described in any of the first aspects above.

[0061] Fourthly, embodiments of the present invention provide a computer storage medium, including a storage device, a processor, and a computer program stored on the storage device and executable on the processor, wherein the processor executes the program to implement the steps of any of the methods described in the first aspect above.

[0062] (III) Beneficial Effects

[0063] The beneficial effects of this invention are as follows: The density control method and system for a heavy medium separation process of this invention, by designing a dilute medium density controller to output a set dilute medium level based on the actual density of the dilute medium, which is the level the dilute medium tank is to reach at the next moment. Furthermore, by designing a dilute medium level controller, based on the difference between the set dilute medium level and the actual dilute medium level in the tank, the opening degree of the corresponding dilute medium water supply valve is output. The dilute medium water supply valve is then adjusted according to the opening degree output by the set dilute medium level controller. Since the liquid level in the dilute medium tank is affected by the water volume, and the density in the dilute medium tank is also affected by the liquid level, adjusting the water volume entering the dilute medium tank adjusts the liquid level, ensuring that the liquid level inside the tank reaches the set dilute medium level. And because the liquid level inside the dilute medium tank changes, the density inside the tank also changes accordingly, thus achieving the adjustment of the density inside the dilute medium tank by adjusting the set dilute medium level. Furthermore, a desliming flow controller was designed to output the opening degree of the desliming water supply valve based on the set and actual desliming flow rates. This valve is then controlled according to the desliming flow controller's output, adjusting the desliming flow rate to reach the set flow rate. Additionally, a combined medium density intelligent controller was designed to output the opening degree of the combined medium diversion valve based on the set and actual combined medium density. This valve is then controlled to regulate the amount of medium entering the combined medium tank, thereby controlling the tank density to reach the set density. Compared to related technologies, this application can replace traditional manual operation, enabling dynamic adjustment of the circulating medium under complex operating conditions and improving the accuracy of density regulation in the heavy medium separation process. This effectively controls the combined medium density near the set point, ensuring washing and beneficiation effects, increasing clean coal production, and guaranteeing safe production. It also reduces system failure rate, labor intensity, and medium consumption, further improving economic efficiency. Attached Figure Description

[0064] Figure 1 This is a schematic flowchart of the density control method for heavy medium sorting provided in an embodiment of the present invention;

[0065] Figure 2 This is a schematic diagram illustrating the control effect of manually controlling the density of coal aggregates.

[0066] Figure 3 This is a schematic diagram illustrating the control effect of controlling the density of coal mix in an embodiment of the present invention;

[0067] Figure 4 A block diagram of a density control system for a heavy medium sorting process provided in an embodiment of the present invention;

[0068] Figure 5A schematic diagram of the software functions of the intelligent control system for the sorting process provided in an embodiment of the present invention;

[0069] Figure 6 This is a schematic diagram illustrating the control effect of manually controlling the density of fine coal mixture;

[0070] Figure 7 This is a schematic diagram illustrating the control effect of controlling the density of fine coal using an embodiment of the present invention.

[0071] [Explanation of Labels in the Attached Image]

[0072] 21: Set density for combined media;

[0073] 22: Actual density of the composite medium;

[0074] 400: Density control system for heavy media sorting process;

[0075] 401: Dilute medium barrel;

[0076] 402: First density meter;

[0077] 403: Level gauge;

[0078] 404: Dilute medium water supply valve;

[0079] 405: Desiccant replenishment valve;

[0080] 406: Flow meter;

[0081] 407: Combined Barrel;

[0082] 408: Second density meter;

[0083] 409: Diverter valve;

[0084] 410: Dilute medium level controller;

[0085] 411: De-medium flow controller;

[0086] 412: Intelligent controller for combined density. Detailed Implementation

[0087] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0088] This invention proposes a dilute medium density controller that outputs a set dilute medium level based on the actual density of the dilute medium. This set dilute medium level is the level the dilute medium tank is expected to reach in the next moment. Furthermore, the dilute medium level controller outputs the opening degree of the corresponding dilute medium water supply valve based on the difference between the set dilute medium level and the actual dilute medium level in the tank. The dilute medium water supply valve is then adjusted according to the opening degree output by the set dilute medium level controller. Since the liquid level in the dilute medium tank is affected by the water volume, and the density in the tank is also affected by the liquid level, adjusting the water volume entering the tank adjusts the liquid level, ensuring it reaches the set dilute medium level. Because the liquid level changes, the density inside the tank also changes, thus achieving the adjustment of the density inside the tank by adjusting the set dilute medium level. Subsequently, a desliming flow controller was designed to output the opening degree of the desliming water supply valve based on the set and actual desliming flow rates. This valve, in turn, controls the desliming water supply valve based on the valve's opening degree, adjusting the desliming flow rate to achieve the set flow rate. Furthermore, a combined medium density intelligent controller was designed to output the opening degree of the combined medium diversion valve based on the set and actual combined medium density. This valve controls the amount of medium entering the combined medium tank, thereby controlling the tank density to achieve the set density. This system can replace traditional manual operation, enabling dynamic adjustment of the medium under complex operating conditions. It solves the technical problem of low parameter accuracy in the heavy medium separation process through manual control. It effectively controls the combined medium density near the set point, ensuring washing and beneficiation effects, increasing clean coal production, and guaranteeing safe production. It also reduces system failure rate, labor intensity, and medium consumption, further improving economic efficiency.

[0089] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0090] Example 1

[0091] Reference Figure 1 and Figure 4 This embodiment provides a density control method for a heavy media separation process, applied to the lump coal separation process. The method includes:

[0092] S102, using a dilute medium density controller to control the density of the dilute medium tank, specifically includes: inputting the actual density of the dilute medium into the dilute medium density controller, the dilute medium density controller outputting the dilute medium set liquid level, so as to control the liquid level of the dilute medium tank to reach the set liquid level of the dilute medium, so that the density of the dilute medium tank is within a preset range.

[0093] S104 uses a dilute medium level controller to control the liquid level in the dilute medium tank. Specifically, it includes: inputting the dilute medium set liquid level and the actual dilute medium liquid level to the dilute medium level controller, and the dilute medium level controller outputting the opening degree of the dilute medium water supply valve, so as to control the opening degree of the dilute medium water supply valve to make the liquid level in the dilute medium tank reach the dilute medium set liquid level.

[0094] S106 uses a desliming flow controller to control the opening of the desliming water supply valve. Specifically, it includes: inputting the desliming set flow rate and the actual desliming flow rate to the desliming flow controller, and the desliming flow controller outputting the opening of the desliming water supply valve, so that the desliming flow rate reaches the desliming set flow rate by controlling the opening of the desliming water supply valve.

[0095] S108 uses a combined medium density intelligent controller to control the density of the combined medium tank. Specifically, it includes: inputting the set density and actual density of the combined medium to the combined medium density intelligent controller, and the combined medium density intelligent controller outputting the opening degree of the combined medium diversion valve, so as to make the density of the combined medium tank reach the set density of the combined medium by controlling the opening degree of the combined medium diversion valve.

[0096] The dilute medium level controller, the desliming flow controller, and the combined medium density intelligent controller all employ a PI control algorithm. The PI control algorithm is as follows:

[0097]

[0098] in, For controller output, This is the controller output from the previous moment. The difference between the controller input parameters at the current moment. This is the difference between the controller input parameters at the previous moment. These are experience points.

[0099] This invention proposes a density control method for a heavy medium separation process. It designs a dilute medium density controller to output a set dilute medium level based on the actual density of the dilute medium. This set dilute medium level is the level the dilute medium tank is expected to reach in the next moment. Furthermore, it designs a dilute medium level controller that outputs the opening degree of the corresponding dilute medium water supply valve based on the difference between the set dilute medium level and the actual dilute medium level in the tank. The dilute medium water supply valve is then adjusted according to the opening degree output by the set dilute medium level controller. Since the liquid level in the dilute medium tank is affected by the water volume, and the density in the tank is also affected by the liquid level, adjusting the water volume entering the tank adjusts the liquid level, ensuring that the liquid level inside the tank reaches the set dilute medium level. Because the liquid level inside the tank changes, the density inside the tank also changes accordingly, thus achieving the adjustment of the density inside the dilute medium tank by adjusting the set dilute medium level. Furthermore, a desliming flow controller was designed to output the opening degree of the desliming water supply valve based on the set and actual desliming flow rates. This valve is then controlled according to the desliming flow controller's output, adjusting the desliming flow rate to reach the set flow rate. Additionally, a combined medium density intelligent controller was designed to output the opening degree of the combined medium diversion valve based on the set and actual combined medium density. This valve is then controlled to regulate the amount of medium entering the combined medium tank, thereby controlling the tank density to reach the set density. Compared to related technologies, this application can replace traditional manual operation, enabling dynamic adjustment of the circulating medium under complex operating conditions and improving the accuracy of density regulation in the heavy medium separation process. This effectively controls the combined medium density near the set point, ensuring washing and beneficiation effects, increasing clean coal production, and guaranteeing safe production. It also reduces system failure rate, labor intensity, and medium consumption, further improving economic efficiency.

[0100] It should be noted that the dilute medium density controller, dilute medium level controller, desliming flow controller, and combined medium density intelligent controller in this application are all preset algorithms that obtain relevant outputs based on relevant inputs.

[0101] Optionally, the specific control rules of the rarefied density controller include:

[0102] exist In this case, ;

[0103] exist In this case, ;

[0104] exist In this case, ;

[0105] in, For the actual density of rare earth elements, Set the liquid level for the dilute medium. , , , This is the lower limit of the dilute medium density. This represents the upper limit of the rarefied density. Set a lower limit for the liquid level of the dilute medium. The upper limit set for the liquid level. The average of the upper and lower limits set for the liquid level.

[0106] By using a pre-designed dilute medium density controller, the set liquid level of the dilute medium is adjusted according to its actual density, so that the density inside the dilute medium tank can be controlled near the set density. Specifically:

[0107] When the actual density of rare earth exist and When within the range, the dilute medium is set at the liquid level. The value is The higher the dilute level, the lower the corresponding dilute density. Therefore, when the actual density of the dilute increases to greater than [a certain value], [the situation becomes more complex]. At that time, the dilute medium setting level should also be raised to When the actual density of the rarefied medium decreases to less than At that time, the dilute medium setting level should also be reduced to... .

[0108] Optionally, the specific control rules of the dilute medium level controller include:

[0109] exist In this case, ;

[0110] exist In this case, ;

[0111] in, Set the liquid level for the dilute medium. This represents the actual level of the dilute medium. For the opening degree of the dilute medium water supply valve, Based on experience points. .

[0112] By using a pre-designed dilute medium level controller, the opening degree of the dilute medium replenishment valve is controlled differently according to the difference between the set dilute medium level and the actual dilute medium level, thereby achieving precise control of the liquid level inside the dilute medium tank.

[0113] Optionally, and Determined by the following rules:

[0114] exist In this case, ;

[0115] exist In this case, ;

[0116] exist In this case, ;

[0117] exist In this case, ;

[0118] exist In this case, ;

[0119] exist In this case, ;

[0120] exist In this case, ;

[0121] in, Based on experience points. , , This is the upper limit of the opening of the dilute medium water supply valve. , This is the lower limit of the opening of the dilute medium water supply valve. .

[0122] When the actual liquid level of the dilute medium With dilute medium set liquid level The difference is and When the interval is within the specified range, the opening of the dilute medium water supply valve should be reduced to a smaller value. This lowers the liquid level and reduces the deviation of the dilute medium level. When the actual dilute medium level... With dilute medium set liquid level The difference is greater than At that time, the control output should be smaller, adjusted to This lowers the liquid level, thereby quickly reducing the difference between the set liquid level and the actual liquid level of the dilute medium. When the set liquid level of the dilute medium... With the actual liquid level of dilute medium The difference is and When the water level is within the specified range, the opening of the water supply valve should be increased to [value missing]. This is to raise the liquid level and reduce the deviation of the dilute medium level. When the dilute medium is set at a certain level... With the actual liquid level of dilute medium The difference is greater than At that time, the control output should be larger, adjusted to This increases the liquid level, thereby rapidly reducing the difference between the set liquid level and the actual liquid level of the dilute medium. This allows for control of the dilute medium density and liquid level, reducing their impact on the density during the mixing process.

[0123] Optionally, the specific control rules of the desliming flow controller include:

[0124] exist In this case, ;

[0125] exist In this case, ;

[0126] exist In this case, ;

[0127] in, To determine the opening degree of the desiccant supply valve, This is the upper limit of the opening of the desiccant supply valve. , This is the lower limit of the opening of the desiccant replenishment valve. The flow process PI parameters for the four desliming screens in the sorting process are as follows: , , , , , .

[0128] By designing a desliming flow controller, the opening of the desliming water supply valve is adjusted according to the desliming set flow rate and the actual desliming flow rate, so that the desliming flow rate is controlled near the dilute medium set flow rate, thereby reducing the impact of desliming flow rate fluctuations on the density of the medium mixing process.

[0129] Optionally, the specific control rules of the combined density intelligent controller include:

[0130] exist In this case, ;

[0131] exist In this case, ;

[0132] in, To set the density for the combination, For the actual density of the medium, For the opening degree of the diversion valve, Based on experience points. .

[0133] By using a pre-designed intelligent controller for medium density, the opening of the medium diversion valve is controlled differently based on the difference between the set density and the actual density of the medium, thereby achieving precise control of the density inside the medium tank.

[0134] Optionally, Determined by the following rules:

[0135] exist In this case, ;

[0136] exist In this case, ;

[0137] exist In this case, ;

[0138] exist In this case, ;

[0139] exist In this case, ;

[0140] exist In this case, ;

[0141] exist In this case, ;

[0142] in, Based on experience points. , , This is the upper limit of the opening of the diverter valve. , This is the lower limit of the opening of the diverter valve. , .

[0143] When the actual density of the composite With the set density of the medium The difference is and When the flow is within the specified range, the opening of the diverter valve should be reduced to a smaller value. This reduces the density and decreases the density deviation of the composite medium. When the actual density of the composite medium... With the set density of the medium The difference is greater than At that time, the control output should be smaller, adjusted to This reduces the density, thereby quickly decreasing the difference between the set density and the feedback. When the combined medium sets the density... Actual density of the composite The difference is and When the flow is within the specified range, the opening of the diverter valve should be increased to [value missing]. This increases density and reduces density deviation in the composite medium. When the composite medium has a set density... Actual density of the composite The difference is greater than At that time, the control output should be larger, adjusted to This increases density, thereby rapidly reducing the difference between the set density and the actual density of the dielectric. And... In the case of and in In the case where the numerical ranges do not correspond, they are respectively and This is mainly because if the actual density of the combined medium is greater than the set density, and the rule is set at this point... When the current process cannot be controlled in a timely and effective manner, the control effect is poor. Therefore, when the difference is... When this happens, the corresponding control output needs to be adjusted.

[0144] Compared with the effect of manual setting, the current density control system operates stably and controls the density of lump coal better near the set value. The proportion of lump coal density control accuracy within the 0.01 range has increased by 22.51%, and the proportion within the 0.005 range has increased by 35.23%.

[0145] Figure 2 To achieve the desired effect of artificially controlling the density of the mixed medium in lump coal, the set density of the mixed medium (21) is 1.695. It can be seen that the actual density 22 of the artificially controlled medium fluctuates within a relatively large range, with a fluctuation interval of ±0.02, indicating that the control effect is not ideal.

[0146] Figure 3 To ensure effective intelligent control of the coal medium density, the set medium density for this setting is 1.67. It can be seen that the fluctuation range of the actual density 22 of the intelligent control medium is relatively small, with a fluctuation range of ±0.01, and the control effect is quite ideal.

[0147] Table 1 compares the results of manual and intelligent control of heavy media separation density for lump coal. With manual control, the proportion of lump coal heavy media separation density within ±0.005 g / ml was 39.72%, and within ±0.01 g / ml was 75.41%. With intelligent control, the proportion of lump coal heavy media separation density within ±0.005 g / ml was 74.95%, and within ±0.01 g / ml was 97.92%.

[0148] Table 1

[0149]

[0150] Secondly, such as Figure 4 As shown, an embodiment of the present invention provides a density control system 400 for a heavy medium separation process, including: a dilute medium tank 401, a first density meter 402, a level gauge 403, a dilute medium water supply valve 404, a desliming water supply valve 405, a flow meter 406, a combined medium tank 407, a second density meter 408, and a combined medium diversion valve 409. The first density meter 402 collects the actual density inside the dilute medium tank 401; the level meter 403 collects the actual liquid level inside the dilute medium tank 401; the dilute medium water supply valve 404 adjusts its opening degree through the dilute medium level controller to adjust the amount of water entering the dilute medium tank 401; the desliming water supply valve 405 adjusts its opening degree through the desliming flow controller to adjust the amount of water in the desliming process; the flow meter 406 collects the actual desliming flow rate; the second density meter 408 collects the actual density inside the combined medium tank 407; the combined medium diversion valve 409 adjusts its opening degree through the combined medium density intelligent controller to adjust the amount of medium entering the combined medium tank 407. The density control system for the heavy medium separation process provided by the technical solution of the present invention, since it is used to implement the steps of the density control method for the heavy medium separation process provided in the first aspect of the present invention, possesses all the technical effects of the density control method for the heavy medium separation process, which will not be elaborated further here.

[0151] In the figure, the dilute medium level controller 410 inputs the difference between the set dilute medium level and the actual dilute medium level. ,according to Select the opening degree of the output dilute medium water supply valve. Input the difference between the set desliming flow rate and the actual desliming flow rate into the desliming flow controller 411. The output of the dilute medium supply valve of the desliming flow controller 411 is... Input the difference between the set density and the actual density of the dielectric into the dielectric density intelligent controller 412. The intelligent controller 412 outputs the opening degree of the medium density diverter valve. .

[0152] Thirdly, embodiments of the present invention provide a storage device having a computer program stored thereon, wherein the program, when executed by a processor, implements the steps of the method described in any of the first aspects above.

[0153] Fourthly, embodiments of the present invention provide a computer storage medium, including a storage device, a processor, and a computer program stored on the storage device and executable on the processor, wherein the processor executes the program to implement the steps of any of the methods described in the first aspect above.

[0154] Example 2

[0155] Reference Figure 1 and Figure 4 This embodiment provides a density control method for a heavy medium separation process, applied to the fine coal separation process. The method includes:

[0156] S102, using a dilute medium density controller to control the density of the dilute medium tank, specifically includes: inputting the actual density of the dilute medium into the dilute medium density controller, the dilute medium density controller outputting the dilute medium set liquid level, so as to control the liquid level of the dilute medium tank to reach the set liquid level of the dilute medium, so that the density of the dilute medium tank is within a preset range.

[0157] S104 uses a dilute medium level controller to control the liquid level in the dilute medium tank. Specifically, it includes: inputting the dilute medium set liquid level and the actual dilute medium liquid level to the dilute medium level controller, and the dilute medium level controller outputting the opening degree of the dilute medium water supply valve, so as to control the opening degree of the dilute medium water supply valve to make the liquid level in the dilute medium tank reach the dilute medium set liquid level.

[0158] S106 uses a desliming flow controller to control the opening of the desliming water supply valve. Specifically, it includes: inputting the desliming set flow rate and the actual desliming flow rate to the desliming flow controller, and the desliming flow controller outputting the opening of the desliming water supply valve, so that the desliming flow rate reaches the desliming set flow rate by controlling the opening of the desliming water supply valve.

[0159] S108 uses a combined medium density intelligent controller to control the density of the combined medium tank. Specifically, it includes: inputting the set density and actual density of the combined medium to the combined medium density intelligent controller, and the combined medium density intelligent controller outputting the opening degree of the combined medium diversion valve, so as to make the density of the combined medium tank reach the set density of the combined medium by controlling the opening degree of the combined medium diversion valve.

[0160] The dilute medium level controller, the desliming flow controller, and the combined medium density intelligent controller all employ a PI control algorithm. The PI control algorithm is as follows:

[0161]

[0162] in, For controller output, This is the controller output from the previous moment. The difference between the controller input parameters at the current moment. This is the difference between the controller input parameters at the previous moment. These are experience points.

[0163] This invention proposes a density control method for a heavy medium separation process. It designs a dilute medium density controller to output a set dilute medium level based on the actual density of the dilute medium. This set dilute medium level is the level the dilute medium tank is expected to reach in the next moment. Furthermore, it designs a dilute medium level controller that outputs the opening degree of the corresponding dilute medium water supply valve based on the difference between the set dilute medium level and the actual dilute medium level in the tank. The dilute medium water supply valve is then adjusted according to the opening degree output by the set dilute medium level controller. Since the liquid level in the dilute medium tank is affected by the water volume, and the density in the tank is also affected by the liquid level, adjusting the water volume entering the tank adjusts the liquid level, ensuring that the liquid level inside the tank reaches the set dilute medium level. Because the liquid level inside the tank changes, the density inside the tank also changes accordingly, thus achieving the adjustment of the density inside the dilute medium tank by adjusting the set dilute medium level. Furthermore, a desliming flow controller was designed to output the opening degree of the desliming water supply valve based on the set and actual desliming flow rates. This valve is then controlled according to the desliming flow controller's output, adjusting the desliming flow rate to reach the set flow rate. Additionally, a combined medium density intelligent controller was designed to output the opening degree of the combined medium diversion valve based on the set and actual combined medium density. This valve is then controlled to regulate the amount of medium entering the combined medium tank, thereby controlling the tank density to reach the set density. Compared to related technologies, this application can replace traditional manual operation, enabling dynamic adjustment of the circulating medium under complex operating conditions and improving the accuracy of density regulation in the heavy medium separation process. This effectively controls the combined medium density near the set point, ensuring washing and beneficiation effects, increasing clean coal production, and guaranteeing safe production. It also reduces system failure rate, labor intensity, and medium consumption, further improving economic efficiency.

[0164] It should be noted that the dilute medium density controller, dilute medium level controller, desliming flow controller, and combined medium density intelligent controller in this application are all preset algorithms that obtain relevant outputs based on relevant inputs.

[0165] Optionally, the specific control rules of the rarefied density controller include:

[0166] exist In this case, ;

[0167] exist In this case, ;

[0168] exist In this case, ;

[0169] in, For the actual density of rare earth elements, Set the liquid level for the dilute medium. , , , This is the lower limit of the dilute medium density. This represents the upper limit of the rarefied density. Set a lower limit for the liquid level of the dilute medium. The upper limit set for the liquid level. The average of the upper and lower limits set for the liquid level.

[0170] By using a pre-designed dilute medium density controller, the set liquid level of the dilute medium is adjusted according to its actual density, so that the density inside the dilute medium tank can be controlled near the set density. Specifically:

[0171] When the actual density of rare earth exist and When within the range, the dilute medium is set at the liquid level. The value is The higher the dilute level, the lower the corresponding dilute density. Therefore, when the actual density of the dilute increases to greater than [a certain value], [the situation becomes more complex]. At that time, the dilute medium setting level should also be raised to When the actual density of the rarefied medium decreases to less than At that time, the dilute medium setting level should also be reduced to... .

[0172] Optionally, the specific control rules of the dilute medium level controller include:

[0173] exist In this case, ;

[0174] exist In this case, ;

[0175] in, Set the liquid level for the dilute medium. This represents the actual level of the dilute medium. For the opening degree of the dilute medium water supply valve, Based on experience points. .

[0176] By using a pre-designed dilute medium level controller, the opening degree of the dilute medium replenishment valve is controlled differently according to the difference between the set dilute medium level and the actual dilute medium level, thereby achieving precise control of the liquid level inside the dilute medium tank.

[0177] Optionally, and Determined by the following rules:

[0178] exist In this case, ;

[0179] exist In this case, ;

[0180] exist In this case, ;

[0181] exist In this case, ;

[0182] exist In this case, ;

[0183] exist In this case, ;

[0184] exist In this case, ;

[0185] in, Based on experience points. , , This is the upper limit of the opening of the dilute medium water supply valve. , This is the lower limit of the opening of the dilute medium water supply valve. .

[0186] When the actual liquid level of the dilute medium With dilute medium set liquid level The difference is and When the interval is within the specified range, the opening of the dilute medium water supply valve should be reduced to a smaller value. This lowers the liquid level and reduces the deviation of the dilute medium level. When the actual dilute medium level... With dilute medium set liquid level The difference is greater than At that time, the control output should be smaller, adjusted to This lowers the liquid level, thereby quickly reducing the difference between the set liquid level and the actual liquid level of the dilute medium. When the set liquid level of the dilute medium... With the actual liquid level of dilute medium The difference is and When the water level is within the specified range, the opening of the water supply valve should be increased to [value missing]. This is to raise the liquid level and reduce the deviation of the dilute medium level. When the dilute medium is set at a certain level... With the actual liquid level of dilute medium The difference is greater than At that time, the control output should be larger, adjusted to This increases the liquid level, thereby rapidly reducing the difference between the set liquid level and the actual liquid level of the dilute medium. This allows for control of the dilute medium density and liquid level, reducing their impact on the density during the mixing process.

[0187] Optionally, the specific control rules of the desliming flow controller include:

[0188] exist In this case, ;

[0189] exist In this case, ;

[0190] exist In this case, ;

[0191] in, To determine the opening degree of the desiccant supply valve, This is the upper limit of the opening of the desiccant supply valve. , This is the lower limit of the opening of the desiccant replenishment valve. The flow process PI parameters for the four desliming screens in the sorting process are as follows: , , , , , .

[0192] By designing a desliming flow controller, the opening of the desliming water supply valve is adjusted according to the desliming set flow rate and the actual desliming flow rate, so that the desliming flow rate is controlled near the dilute medium set flow rate, thereby reducing the impact of desliming flow rate fluctuations on the density of the medium mixing process.

[0193] Optionally, the specific control rules of the combined density intelligent controller include:

[0194] exist In this case, ;

[0195] exist In this case, ;

[0196] in, To set the density for the combination, For the actual density of the medium, For the opening degree of the diversion valve, Based on experience points. .

[0197] By using a pre-designed intelligent controller for medium density, the opening of the medium diversion valve is controlled differently based on the difference between the set density and the actual density of the medium, thereby achieving precise control of the density inside the medium tank.

[0198] Optionally, Determined by the following rules:

[0199] exist In this case, ;

[0200] exist In this case, ;

[0201] exist In this case, ;

[0202] exist In this case, ;

[0203] exist In this case, ;

[0204] exist In this case, ;

[0205] exist In this case, ;

[0206] in, Based on experience points. , , This is the upper limit of the opening of the diverter valve. , This is the lower limit of the opening of the diverter valve. , .

[0207] When the actual density of the composite With the set density of the medium The difference is and When the flow is within the specified range, the opening of the diverter valve should be reduced to a smaller value. This reduces the density and decreases the density deviation of the composite medium. When the actual density of the composite medium... With the set density of the medium The difference is greater than At that time, the control output should be smaller, adjusted to This reduces the density, thereby quickly decreasing the difference between the set density and the feedback. When the combined medium sets the density... Actual density of the composite The difference is and When the flow is within the specified range, the opening of the diverter valve should be increased to [value missing]. This increases density and reduces density deviation in the composite medium. When the composite medium has a set density... Actual density of the composite The difference is greater than At that time, the control output should be larger, adjusted to This increases density, thereby rapidly reducing the difference between the set density and the actual density of the dielectric. And... In the case of and in In the case where the numerical ranges do not correspond, they are respectively and This is mainly because if the actual density of the combined medium is greater than the set density, and the rule is set at this point... When the current process cannot be controlled in a timely and effective manner, the control effect is poor. Therefore, when the difference is... When this happens, the corresponding control output needs to be adjusted.

[0208] Compared with the effect of manual setting, the current density control system operates stably and controls the density of fine coal medium better near the set value. The control accuracy of fine coal medium density within the 0.02 range has increased by 27.06%, and the proportion within the 0.01 range has increased by 46.21%.

[0209] Figure 6 To demonstrate the effect of artificially controlling the density of the coal mixture, the set density of the mixture (21) is 1.42. It can be seen that the actual density 22 of the artificially controlled medium fluctuates within a relatively large range, with a fluctuation interval of ±0.02, indicating that the control effect is not ideal.

[0210] Figure 7 To demonstrate the effectiveness of intelligent control of the coal's medium density, the system can quickly track changes in the setpoint. Furthermore, the intelligent control exhibits relatively small fluctuations, with a range of ±0.02, indicating a fairly ideal control effect.

[0211] Table 2 compares the results of manual and intelligent control of the heavy medium separation density of coal powder. Under manual control, 43.69% of the coal powder heavy medium separation densities were within ±0.01 g / ml, and 71.15% were within ±0.02 g / ml. Under intelligent control, 89.90% of the coal powder heavy medium separation densities were within ±0.01 g / ml, and 98.21% were within ±0.02 g / ml.

[0212] Table 2

[0213]

[0214] Furthermore, the hardware platform in this embodiment mainly comprises three parts: the production process, field equipment, and an intelligent operation control system. Field equipment such as level gauges, density meters, and flow meters measure key parameters during the production process, such as the actual density and level of the medium, and transmit the data to the PLC in the corresponding station. Simultaneously, the data is stored on the HMI server, and some data is also displayed on the monitoring computer, allowing operators to monitor key parameters such as heavy medium density, level, and diversion valve opening in real time. The density intelligent control program is stored in the PLC, while the front-end monitoring interface is stored on the server and the local monitoring computer, respectively.

[0215] The intelligent control software provided in this embodiment mainly includes a human-machine interface (HMI) and lower-level machine development software. The HMI is primarily designed using Siemens WINCC software and includes interfaces for combined medium density control, dilute medium density and level control, and desliming flow control. The interface mainly includes real-time display of key parameters, control outputs, manual / automatic switching buttons, actuator input, trend graphs, and other functions. The lower-level machine development software uses Siemens Step7 software.

[0216] The specific functional design of the software is as follows: Figure 5 The Step7 loop control software mainly includes three major functions: data processing, loop control, and control mode switching. The data processing module includes key data monitoring, display, and alarm functions. The loop control module includes combined medium density loop control, dilute medium density and level loop control, and desliming flow rate loop control. The control mode switching module includes two sub-functions: manual control and automatic control.

[0217] WINCC monitoring software mainly comprises two functional modules: system management and process monitoring. The system management module includes two sub-modules: system navigation and operation logging. The process monitoring module includes four sub-modules: alarm display, data archiving and historical trend display, production data monitoring, and loop control monitoring.

[0218] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0219] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, then this invention should also include these modifications and variations.

[0220] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0221] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0222] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0223] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0224] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A density control method for a heavy medium sorting process, characterized in that, include: The density of the dilute medium tank is controlled by a dilute medium density controller. Specifically, the controller inputs the actual density of the dilute medium into the controller and outputs a set dilute medium level. The set dilute medium level is achieved by controlling the liquid level in the dilute medium tank, so that the density of the dilute medium tank is within a preset range. The dilute medium level controller is used to control the liquid level in the dilute medium tank. Specifically, it includes: inputting the above-mentioned dilute medium set liquid level and the actual dilute medium liquid level into the dilute medium level controller, and the dilute medium level controller outputting the opening degree of the dilute medium water supply valve, so as to control the opening degree of the dilute medium water supply valve to make the liquid level in the dilute medium tank reach the dilute medium set liquid level. The opening of the desliming water supply valve is controlled by a desliming flow controller. Specifically, the desliming flow controller is input with a desliming set flow rate and an actual desliming flow rate. The desliming flow controller outputs the opening of the desliming water supply valve so that the desliming flow rate reaches the desliming set flow rate by controlling the opening of the desliming water supply valve. The density of the medium tank is controlled by a medium density intelligent controller, which specifically includes: inputting the medium set density and the medium actual density into the medium density intelligent controller, and the medium density intelligent controller outputting the opening degree of the medium diversion valve, so as to make the medium tank density reach the medium set density by controlling the opening degree of the medium diversion valve. The dilute medium level controller, the desliming flow controller, and the combined medium density intelligent controller all employ a PI control algorithm. The PI control algorithm is as follows: ； in, For controller output, This is the controller output from the previous moment. The difference between the controller input parameters at the current moment. This is the difference between the controller input parameters at the previous moment. Experience value; The specific control rules of the rarefied density controller include: exist In this case, ; exist In this case, ; exist In this case, ; in, For the actual density of rare earth elements, Set the liquid level for the dilute medium. , , This is the lower limit of the dilute medium density. This represents the upper limit of the rarefied density. Set a lower limit for the liquid level of the dilute medium. The upper limit set for the liquid level. The average of the upper and lower limits set for the liquid level; The specific control rules of the dilute medium level controller include: exist In this case, ; exist In this case, ; in, Set the liquid level for the dilute medium. This represents the actual level of the dilute medium. For the opening degree of the dilute medium water supply valve, Based on experience points. ; and Determined by the following rules: exist In this case, ; exist In this case, ; exist In this case, ; exist In this case, ; exist In this case, ; exist In this case, ; exist In this case, ; in, Based on experience points. , This is the upper limit of the opening of the dilute medium water supply valve. This is the lower limit of the opening of the dilute medium water supply valve; The specific control rules of the desliming flow controller include: exist In this case, ; exist In this case, ; exist In this case, ; in, To determine the opening degree of the desiccant supply valve, This is the upper limit of the opening of the desiccant supply valve. This is the lower limit of the opening of the desiccant replenishment valve; The specific control rules of the combined density intelligent controller include: exist In this case, ; exist In this case, ; in, To set the density for the combination, For the actual density of the medium, For the opening degree of the diversion valve, Based on experience points. ; Determined by the following rules: exist In this case, ; exist In this case, ; exist In this case, ; exist In this case, ; exist In this case, ; exist In this case, ; exist In this case, ; in, Based on experience points. , This is the upper limit of the opening of the diverter valve. This is the lower limit of the opening of the diverter valve.

2. A density control system for a heavy medium separation process based on the density control method for heavy medium separation process according to claim 1, characterized in that, include: Diluted medium barrel; The first density meter collects the actual density inside the rare medium barrel; The level gauge collects the actual liquid level inside the dilute medium tank; The dilute medium replenishment valve is adjusted by regulating the opening degree of the dilute medium level controller to adjust the amount of water entering the dilute medium tank. The desliming water supply valve is adjusted by regulating its opening degree through the desliming flow controller to adjust the water volume during the desliming process; Flow meter, to collect actual dewatering flow rate; Combined barrel; The second density meter collects the actual density inside the combined container; The opening degree of the combined medium diversion valve is adjusted by the combined medium density intelligent controller to adjust the amount of medium entering the combined medium tank.

3. A storage device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method of claim 1.

4. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method described in claim 1.

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