Coal flotation control system and method

Abstract

The embodiment of the invention provides a coal flotation control system and method, and belongs to the technical field of coal flotation. The system comprises a first-stage flotation machine and a second-stage flotation machine which are used for constructing a secondary flotation device; a centrifugal dehydrator is arranged between the first-section flotation machine and the second-section flotation machine and used for conducting solid-liquid separation on flotation concentrate obtained after first-section flotation. The detection devices are respectively arranged at the positions of the first-section flotation machine, the second-section flotation machine and the centrifugal dehydrator and are used for detecting real-time state information of materials at corresponding positions; the control device is used for generating a medicament control scheme based on the real-time state information of the materials at all the positions; and the flotation chemical adding device is used for executing the chemical control scheme. According to the scheme, intelligent and precise adding of the flotation reagent is achieved, the flotation separation efficiency and the clean coal recovery rate are remarkably improved, meanwhile, the reagent usage amount is reduced, and the efficient, stable and energy-saving production requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of coal flotation, and in particular to a coal flotation control system and a coal flotation control method. Background Art

[0002] The existing coal flotation process usually relies on the difference in physical and chemical properties of the coal and mineral impurities to achieve separation. In order to further improve the purity and recovery rate of clean coal, coal preparation plants generally adopt secondary flotation process. In the secondary flotation process, the conventional practice is to perform secondary flotation on the coal that has not been thoroughly purified after the first stage of flotation to remove the remaining fine impurities. However, in the current secondary flotation process, most coal preparation plants rely on job workers to manually prepare and add flotation reagents. This manual operation method has significant defects in many aspects.

[0003] Manual dosing requires a lot of manpower, which not only increases the cost of human resources, but also due to the unavoidable human factors, the accuracy and stability of dosing are poor, resulting in large fluctuations in the flotation process and difficulty in ensuring the stability of the flotation effect. Secondly, manual dosing is inefficient and it is difficult to respond to changes in coal quality during the production process in a timely manner, making it difficult to adapt the dosage to real-time production needs, resulting in the recovery rate and quality of the flotation clean coal being difficult to effectively guarantee. In addition, the consumption of flotation reagents in manual operations is often high, which not only increases production costs, but also causes a certain waste of resources, which does not meet the requirements of energy conservation, emission reduction and green production.

[0004] The traditional manual flotation dosing method is difficult to adapt to the requirements of modern coal preparation plants for high efficiency, stability and cost savings. Especially when faced with large fluctuations in coal quality, the lag and uncertainty of manual operation lead to reduced production efficiency. Therefore, there is an urgent need for a flotation intelligent control solution based on advanced control technology. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a coal flotation control system and method, so as to at least solve the problem that the traditional manual flotation and dosing method is difficult to adapt to the requirements of modern coal preparation plants for high efficiency, stability and cost saving.

[0006] In order to achieve the above-mentioned purpose, the first aspect of the present invention provides a coal flotation control system, the system comprising: a first-stage flotation machine and a second-stage flotation machine for constructing a secondary flotation device; a centrifugal dehydrator is arranged between the first-stage flotation machine and the second-stage flotation machine, for performing solid-liquid separation on the floated essence after the first-stage flotation; detection devices are respectively arranged at the positions of the first-stage flotation machine, the second-stage flotation machine and the centrifugal dehydrator, for detecting real-time status information of materials at corresponding positions; a control device, for generating a reagent control plan based on the real-time status information of the materials at each position; and a flotation dosing device, for executing the reagent control plan.

[0007] Optionally, the detection device includes: a slurry ash meter arranged at the outlet end of the first flotation machine and the outlet end of the second flotation machine, for real-time detection of ash information of the first material at the corresponding position; an online particle size analyzer arranged at the inlet end of the first flotation machine, the outlet end of the first flotation machine, the inlet end of the second flotation machine and the outlet end of the second flotation machine, for real-time detection of particle size information of the second material at the corresponding position; and an artificial testing device arranged at the outlet end of the centrifugal dehydrator and the outlet end of the second flotation machine, for recovering ash information of the third material at the corresponding detection position confirmed by the user.

[0008] Optionally, the first material includes: the concentrate of the first-stage flotation machine and the concentrate of the second-stage flotation machine; the second material includes: the feed of the first-stage flotation machine, the tailings of the first thickening system, the concentrate of the first-stage flotation machine, the feed of the second-stage flotation machine, the tailings of the second thickening system and the concentrate of the second-stage flotation machine; wherein the first thickening system is arranged at the outlet end of the first-stage flotation machine for collecting the tailings of the first-stage flotation machine; the second thickening system is arranged at the outlet end of the second-stage flotation machine for collecting the tailings of the second-stage flotation machine.

[0009] Optionally, the third material includes: a solid product at the outlet of the centrifugal dehydrator, and a solid product after filtering by a filter press system; wherein the filter press system is arranged at the outlet of the second-stage flotation machine, and is used to perform filter pressing on the flotation concentrate of the second-stage flotation machine.

[0010] Optionally, the control device is configured to: call a trained dosage prediction model based on the real-time status information of the material at each position, obtain the dosage requirements of the first-stage flotation machine and the second-stage flotation machine corresponding to the real-time status information of the material at each current position; and generate a dosage control plan based on the dosage requirements of the first-stage flotation machine and the second-stage flotation machine.

[0011] Optionally, the training rules of the drug dosage prediction model include: collecting historical flotation process information and performing preprocessing on the historical process information; labeling the drug dosage requirements of the corresponding first-stage flotation machine and the second-stage flotation machine on the preprocessed historical process information, and constructing training samples based on the labeling results; performing model training based on the training samples to obtain a drug dosage prediction model.

[0012] Optionally, the execution device is configured to: determine the reagent adjustment amount of the first-stage flotation machine and the reagent adjustment amount of the second-stage flotation machine based on the reagent control scheme, so as to generate control instructions corresponding to the adjustment amount; and execute the control instructions respectively to perform the reagent adjustment of the first-stage flotation machine and the reagent adjustment of the second-stage flotation machine.

[0013] A second aspect of the present invention provides a coal flotation control method, which is implemented based on the above-mentioned coal flotation control system, and the method includes: collecting real-time status information of materials at each detection position in a secondary flotation device; calling a trained reagent dosage prediction model based on the real-time status information of materials at each detection position to obtain a reagent control plan; based on the reagent control plan, executing reagent adjustment of a first-stage flotation machine and reagent adjustment of a second-stage flotation machine.

[0014] Optionally, the real-time status information includes: ash information of the first material, particle size information of the second material and ash information of the third material; wherein, the first material includes: the flotation concentrate of the first-stage flotation machine and the flotation concentrate of the second-stage flotation machine; the second material includes: the feed of the first-stage flotation machine, the tailings of the first thickening system, the flotation concentrate of the first-stage flotation machine, the feed of the second-stage flotation machine, the tailings of the second thickening system and the flotation concentrate of the second-stage flotation machine; wherein, the first thickening system is arranged at the outlet end of the first-stage flotation machine for collecting the tailings of the first-stage flotation machine; the second thickening system is arranged at the outlet end of the second-stage flotation machine for collecting the tailings of the second-stage flotation machine; the third material includes: the solid product at the outlet end of the centrifugal dehydrator, and the solid product after filtration by the filter press system; wherein, the filter press system is arranged at the outlet end of the second-stage flotation machine for performing filter press on the flotation concentrate of the second-stage flotation machine.

[0015] On the other hand, the present invention provides a computer-readable storage medium, on which instructions are stored, which, when executed on a computer, enable the computer to execute the above-mentioned coal flotation control method.

[0016] Through the above technical scheme, the scheme of the present invention constructs a secondary flotation device through a first-stage flotation machine and a second-stage flotation machine, and a centrifugal dehydrator is arranged between the two to realize the solid-liquid separation of the flotation concentrate, so as to reduce the processing volume and reagent consumption entering the second-stage flotation. The detection devices in the system are distributed in various positions of the first-stage flotation machine, the second-stage flotation machine and the centrifugal dehydrator, and real-time monitoring of material status information, including data such as coal slurry concentration, ash content and particle size, ensures accurate control of the flotation process. The control device generates an optimized reagent control scheme based on these real-time data, and implements automatic dosing adjustment through the flotation dosing device. This system realizes the intelligent and precise addition of flotation reagents, significantly improves the flotation sorting efficiency and clean coal recovery rate, and at the same time reduces the amount of reagents used, meeting the production needs of high efficiency, stability and energy saving.

[0017] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of a coal flotation control system provided by an embodiment of the present invention; Figure 2 It is an application structure diagram of a coal flotation control system provided by an embodiment of the present invention; Figure 3 It is a flow chart of the steps of a coal flotation control method provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0020] Figure 1 1 is a system structure diagram of a coal flotation control system provided by an embodiment of the present invention. Figure 1 As shown, an embodiment of the present invention provides a coal flotation control system, the system comprising: a first-stage flotation machine and a second-stage flotation machine for constructing a secondary flotation device; a centrifugal dehydrator is arranged between the first-stage flotation machine and the second-stage flotation machine, for performing solid-liquid separation on the floated essence after the first-stage flotation; detection devices are respectively arranged at the positions of the first-stage flotation machine, the second-stage flotation machine and the centrifugal dehydrator, for detecting real-time status information of materials at corresponding positions; a control device, for generating a reagent control plan based on the real-time status information of the materials at each position; and a flotation dosing device, for executing the reagent control plan.

[0021] Preferably, the detection device includes: a slurry ash meter arranged at the outlet end of the first flotation machine and the outlet end of the second flotation machine, which is used to detect the ash information of the first material at the corresponding position in real time; an online particle size analyzer arranged at the inlet end of the first flotation machine, the outlet end of the first flotation machine, the inlet end of the second flotation machine and the outlet end of the second flotation machine, which is used to detect the particle size information of the second material at the corresponding position in real time; and an artificial testing device arranged at the outlet end of the centrifugal dehydrator and the outlet end of the second flotation machine, which is used to recover the ash information of the third material at the corresponding detection position confirmed by the user.

[0022] Specifically, the first material includes: the concentrate of the first stage flotation machine and the concentrate of the second stage flotation machine; the second material includes: the feed of the first stage flotation machine, the tailings of the first thickening system, the concentrate of the first stage flotation machine, the feed of the second stage flotation machine, the tailings of the second thickening system and the concentrate of the second stage flotation machine; wherein, the first thickening system is arranged at the outlet end of the first stage flotation machine for collecting the tailings of the first stage flotation machine; the second thickening system is arranged at the outlet end of the second stage flotation machine for collecting the tailings of the second stage flotation machine.

[0023] Specifically, the third material includes: a solid product at the outlet of the centrifugal dehydrator, and a solid product filtered by a filter press system; wherein the filter press system is arranged at the outlet of the second-stage flotation machine, and is used to perform filter press on the flotation product of the second-stage flotation machine.

[0024] In the embodiment of the present invention, the slurry ash analyzer, online particle size analyzer and manual testing device set at each key position of the flotation process can comprehensively collect material information at each stage of the flotation process, especially accurately measure the parameters such as ash content and particle size of the coal slurry, so that the system can dynamically adjust the amount of flotation reagent added according to real-time data to optimize the flotation effect. The following is a specific functional description of each part of the system and its technical effects.

[0025] 1) Slurry ash meter: The slurry ash meter equipped with the system is distributed at the outlet of the first and second flotation machines, and is specifically used to detect the ash information of the flotation concentrate (i.e. coal concentrate) discharged from the flotation machine in real time. Ash content is one of the important indicators for evaluating the quality of clean coal, and the ash content of coal directly affects its combustion efficiency and subsequent processing value. By continuously monitoring the ash content at key positions in the flotation process (such as the outlet of the first and second flotation machines), the system can obtain the changes in the ash content in the flotation concentrate in real time, so as to provide timely feedback on the coal sorting effect. The ash monitoring information will serve as an important reference data for the dosing control system, and the control system will realize dynamic adjustment of the dosing amount, so that the dosing amount is more in line with the actual changes in coal quality, thereby improving the flotation efficiency and clean coal quality.

[0026] 2) Online particle size analyzer: Online particle size analyzer is mainly installed at several key positions in the flotation process, including the inlet and outlet of the first stage flotation machine, the inlet and outlet of the second stage flotation machine, etc. Particle size is one of the important factors affecting flotation efficiency. The particle size of particles in coal slurry is directly related to the dispersion effect of flotation reagents and the adhesion effect of coal particles and bubbles. The system detects the coal slurry particle size information at these positions in real time through the online particle size analyzer, so that the system can timely grasp the particle size distribution of coal particles in the coal slurry, and then control the concentration and dosage of reagent addition to achieve better flotation effect. The application of online particle size analyzer not only improves the real-time monitoring capability of the flotation process, but also provides more comprehensive data support for the control system. Especially in the case of frequent changes in coal quality, the real-time feedback of particle size detection data can respond in time, avoiding the waste of reagents or the decrease of sorting efficiency due to coal quality fluctuations, and significantly improving the adaptability and stability of the entire flotation system.

[0027] 3) Manual testing device: The system also has manual testing devices at the outlet of the centrifugal dehydrator and the outlet of the second-stage flotation machine, which are used to test the ash content of materials at key locations (such as the solid product at the outlet of the centrifugal dehydrator and the solid product after filter pressing). Since the manual testing device can provide more accurate test results, the system further improves the accuracy of ash content detection by cross-verifying the automatic test data with the manual testing data. This design ensures the accuracy of the system's dosing control and also provides strong support for subsequent quality control and optimization.

[0028] Furthermore, according to the material characteristics at different positions, the detection device is divided into the detection of the first material, the second material and the third material. The first material mainly refers to the flotation concentrate of the first stage flotation machine and the flotation concentrate of the second stage flotation machine, and its ash content information is detected in real time by the slurry ash meter; the second material includes the feed, tailings and flotation concentrate of the first stage flotation machine, the feed, tailings and flotation concentrate of the second stage flotation machine, and its particle size information is detected in real time by the online particle size meter; the third material is the solid product after centrifugal dehydration and the solid product in the filter press system, and the ash content information of these materials is obtained through the artificial testing device. The real-time collection and feedback of these material data enable the system to finely control the flotation process, ensure that the characteristics of different stages and different positions of the coal slurry can be fully quantitatively monitored, and based on this, the dosing adjustment is implemented. Through this refined and data-based control method, the system can greatly reduce the consumption of reagents and improve the flotation sorting effect.

[0029] Based on the scheme of the present invention, by real-time detection of ash content and particle size information of coal slurry, the system can quickly respond to changes in coal quality and ensure maximum flotation efficiency through automated reagent adjustment.

[0030] Preferably, the control device is configured to: call the trained dosage prediction model based on the real-time status information of the material at each position, obtain the dosage requirements of the first-stage flotation machine and the second-stage flotation machine corresponding to the real-time status information of the material at each current position; and generate a dosage control plan based on the dosage requirements of the first-stage flotation machine and the second-stage flotation machine.

[0031] In the embodiment of the present invention, the control device uses a pre-trained dosage prediction model to analyze and process the real-time status information of materials at key positions in the flotation process, including ash content, particle size, coal slurry concentration and other data, by calling the model. This process obtains real-time feedback from the monitoring device, so that the control device can dynamically identify the current coal quality status and changes in the demand for flotation materials.

[0032] The dosage prediction model is built based on a large amount of historical data and production experience, and has strong adaptability and accuracy. The model predicts the optimal dosage of reagents under different coal quality, material characteristics and other conditions through multi-parameter analysis. After the control device calls the model, it automatically calculates the optimal dosage of reagents for the first and second flotation machines under the current conditions based on the current material status information. This model-based prediction overcomes the lag and experience dependence of traditional manual dosing, allowing the dosage to accurately match real-time production needs.

[0033] Based on the dosage demand obtained by the dosage prediction model, the control device further generates a dosage control plan, which contains specific dosage and dosage time information. The control device issues instructions to the flotation dosing device through this plan to guide the automatic addition of reagents to the first and second stage flotation machines, ensuring that the flotation process always operates under optimal conditions.

[0034] Based on the scheme of the present invention, by calling the trained dosage prediction model, the control device can quickly calculate the appropriate dosage of the reagent, so that the flotation efficiency is greatly improved. At the same time, this intelligent prediction reduces the residual impurities in the coal and improves the purity of the flotation clean coal. The intelligent prediction model can avoid waste caused by excessive reagents. By accurately controlling the dosage of each addition, the control device significantly reduces the consumption of reagents, thereby reducing production costs and improving the economic benefits of the coal preparation plant. Traditional manual dosing has fluctuations caused by lack of experience or human errors, while the control device dynamically optimizes the dosage through real-time status information to ensure the smooth operation of the flotation process, greatly improving the stability and safety of production. The modeled dosing prediction can dynamically adjust the dosage of the reagent according to different coal quality conditions, so that the system has strong adaptability. Even in a complex or frequently changing production environment, it can automatically adjust the demand for reagents to meet the requirements of efficient flotation.

[0035] Preferably, the training rules of the drug dosage prediction model include: collecting historical flotation process information and performing preprocessing on the historical process information; labeling the drug dosage requirements of the corresponding first-stage flotation machine and second-stage flotation machine on the preprocessed historical process information, and constructing training samples based on the labeling results; performing model training based on the training samples to obtain a drug dosage prediction model.

[0036] In the embodiment of the present invention, the training of the model is first based on the comprehensive data collection of the historical flotation process, including key information such as ash content, particle size, concentration, and reagent addition amount of the flotation process under different coal quality conditions. These data represent the actual fluctuations of various state parameters in the flotation process, covering a variety of production conditions and changes in flotation effects, and can provide a rich data basis for model training.

[0037] After completing data collection, the historical process information is preprocessed. Preprocessing includes removing outliers, normalizing, and cleaning data to ensure the quality and consistency of training samples. This step can effectively filter out noise data and improve the accuracy of model training. In addition, data normalization enables the model to better understand and apply data of different dimensions without being affected by differences in data dimensions, thereby improving the generalization ability of the model.

[0038] After the preprocessing is completed, the system manually annotates the historical reagent requirements of the first and second stage flotation machines. The annotation process comprehensively considers the optimal reagent addition amount under different coal qualities and flotation conditions, and refers to production results and actual effects. This annotated data provides guiding information for training samples, allowing the model to learn how to generate a dosing plan based on real-time monitoring data during training. The annotated data is used as training samples and imported into the model for deep learning training, and finally forms a reagent dosage prediction model. During the training process, the model learns the correlation between coal quality, flotation conditions and reagent requirements through a large number of samples, and can gradually optimize its own parameters to improve the accuracy and adaptability of the prediction. In actual applications, the trained reagent dosage prediction model can automatically calculate the optimal reagent dosage based on the real-time status information of the first and second stage flotation, thereby realizing intelligent control of the flotation process.

[0039] Based on the scheme of the present invention, the trained model can quickly and accurately calculate the reagent demand of the first and second stage flotation machines, so that the dosage is more in line with the actual coal quality conditions and production needs, thereby greatly improving the efficiency of the flotation process and the clean coal recovery rate. The reagent dosage prediction model is based on rich historical data training and can adapt to a variety of coal quality changes and production conditions. Whether it is a high-ash, low-particle-size coal or a low-ash, high-particle-size coal, the model can accurately predict the required dosage, making the system highly adaptable in different environments. The reagent dosage prediction model can automatically perform dosing control and no longer rely on manual experience for adjustment, avoiding flotation fluctuations caused by human factors, significantly improving the stability of the production process, and ensuring the stability of the quality of the flotation clean coal.

[0040] Preferably, the execution device is configured to: determine the reagent adjustment amount of the first-stage flotation machine and the reagent adjustment amount of the second-stage flotation machine based on the reagent control scheme to generate control instructions corresponding to the adjustment amount; execute the control instructions respectively to perform the reagent adjustment of the first-stage flotation machine and the reagent adjustment of the second-stage flotation machine.

[0041] In the embodiment of the present invention, the execution device first calculates the reagent adjustment amount required for the first stage flotation machine and the second stage flotation machine according to the optimization strategy in the reagent control scheme. The determination process of the reagent adjustment amount is based on the real-time material state information and the flotation target set by the system, and the amount of reagent added is optimized through precise calculation to adapt to the changing needs of the flotation process.

[0042] The execution device generates corresponding control instructions through the adjustment amount in the reagent control scheme. These instructions include the specific dosage and adjustment time points of the first and second stage flotation machines to ensure that the reagents can be injected into the flotation system at the best time. The control instructions not only take into account the real-time status of the flotation machine, but also make dynamic adjustments based on parameters such as the flow rate of the coal slurry and the processing capacity of the flotation machine to ensure uniform distribution of the reagents and stability of the flotation effect.

[0043] After the control instructions are generated, the actuator transmits these instructions to the dosing devices of the first and second stage flotation machines. The actuator can achieve high-precision reagent addition control, not only accurately adjusting the dosage of each dosing, but also flexibly adjusting the frequency and concentration of reagent addition according to the needs of different stages of the flotation process. In this way, the actuator converts the control instructions into actual flotation operations, ensuring that the amount of reagent used accurately matches the real-time production needs.

[0044] Based on the scheme of the present invention, the execution device can quickly and accurately adjust the dosage of the first and second stage flotation machines according to the control scheme, thereby ensuring that each stage of the flotation process can be carried out under the optimal dosing conditions, greatly improving the flotation sorting efficiency. The precise control capability of the execution device enables the flotation machine to always maintain the optimal dosing state under different coal quality conditions, effectively reducing the impurity content, thereby improving the ash quality and particle size distribution of the clean coal, and ensuring that the flotation products meet high quality standards.

[0045] like Figure 2 , provides an application scenario of coal flotation control system, the main process of which is as follows: 1) Control device: The control device receives coal quality information and manual test results, and communicates with online testing instruments in real time to obtain key data, such as ash content and particle size information. Based on this information, the control device dynamically generates a reagent control plan and sends control instructions to each dosing device and execution device.

[0046] 2) Flotation process: The system includes two-stage flotation process. Coal slurry enters the "first stage reagent mixing device" through the "first stage flotation feed bucket and feed pump" to be fully mixed with reagents, and then sent to the "first stage flotation machine". After the first stage flotation machine is processed, the tailings enter the concentration system, and the floating concentrate is separated into product 1 and centrifugal liquid through centrifugal dehydration.

[0047] 3) Secondary flotation: The centrifugal liquid enters the "secondary flotation feed barrel and feed pump", and after being mixed with reagents again in the "secondary reagent mixing device", it enters the "secondary flotation machine" for secondary flotation. The tailings after the secondary flotation are sent to the concentration system, and the flotation concentrate is sent to the filter press system, and finally product 2 is obtained.

[0048] 3) Detection and feedback: The system is equipped with online detectors, flow meters, concentration meters and other equipment to monitor the coal slurry status at key locations in real time. Through data feedback, the control device dynamically optimizes the amount of reagents added to ensure the efficiency and stability of the flotation process.

[0049] Figure 3 FIG. 1 is a flow chart of a method for controlling coal flotation provided by an embodiment of the present invention. Figure 3 As shown, an embodiment of the present invention provides a coal flotation control method, the method comprising: Step S10: collecting real-time status information of materials at each detection position in the secondary flotation device.

[0050] Step S20: Based on the real-time status information of the material at each detection position, the trained drug dosage prediction model is called to obtain a drug dosage control plan.

[0051] Step S30: Based on the reagent control scheme, perform reagent adjustment of the first stage flotation machine and the second stage flotation machine.

[0052] Preferably, the real-time status information includes: ash information of the first material, particle size information of the second material and ash information of the third material; wherein, the first material includes: the flotation concentrate of the first stage flotation machine and the flotation concentrate of the second stage flotation machine; the second material includes: the feed of the first stage flotation machine, the tailings of the first thickening system, the flotation concentrate of the first stage flotation machine, the feed of the second stage flotation machine, the tailings of the second thickening system and the flotation concentrate of the second stage flotation machine; wherein, the first thickening system is arranged at the outlet end of the first stage flotation machine for collecting the tailings of the first stage flotation machine; the second thickening system is arranged at the outlet end of the second stage flotation machine for collecting the tailings of the second stage flotation machine; the third material includes: the solid product at the outlet end of the centrifugal dehydrator, and the solid product after filtration by the filter press system; wherein, the filter press system is arranged at the outlet end of the second stage flotation machine for performing filter press on the flotation concentrate of the second stage flotation machine.

[0053] The embodiment of the present invention further provides a computer-readable storage medium, on which instructions are stored, which, when executed on a computer, enable the computer to execute the above-mentioned coal flotation control method.

[0054] Those skilled in the art will understand that all or part of the steps in the method for implementing the above-mentioned embodiments can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including several instructions for making a single-chip microcomputer, a chip or a processor execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0055] The optional embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the technical concept of the embodiments of the present invention, the technical scheme of the embodiments of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the embodiments of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0056] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed in the embodiments of the present invention.

Claims

1. A coal flotation control system, characterized in that: The system comprises: A primary flotation cell and a secondary flotation cell for constructing a secondary flotation device; A centrifugal dehydrator is arranged between the first stage flotation machine and the second stage flotation machine for performing solid-liquid separation on the floated essence after the first stage flotation; Detection devices are respectively arranged at the first stage flotation machine, the second stage flotation machine and the centrifugal dehydrator to detect the real-time status information of the materials at the corresponding positions; A control device for generating a dosage control plan based on real-time status information of materials at each location; The flotation dosing device is used to implement the dosing control scheme.

2. The system according to claim 1, characterized in that The detection device comprises: The slurry ash meters arranged at the outlet ends of the first stage flotation machine and the second stage flotation machine are used to detect the ash information of the first material at the corresponding positions in real time; An online particle size analyzer is arranged at the inlet end of the first stage flotation machine, the outlet end of the first stage flotation machine, the inlet end of the second stage flotation machine and the outlet end of the second stage flotation machine, and is used to detect the particle size information of the second material at the corresponding position in real time; The artificial testing device arranged at the outlet of the centrifugal dehydrator and the outlet of the second-stage flotation machine is used to recover the ash content information of the third material at the corresponding detection position confirmed by the user.

3. The system according to claim 2, characterized in that The first material includes: The flotation essence of the first stage flotation machine and the flotation essence of the second stage flotation machine; The second material includes: The feed of the first flotation machine, the tailings of the first thickening system, the flotation concentrate of the first flotation machine, the feed of the second flotation machine, the tailings of the second thickening system and the flotation concentrate of the second flotation machine; wherein, The first concentration system is arranged at the outlet end of the first stage flotation machine, and is used to collect tailings from the first stage flotation machine; The second thickening system is arranged at the outlet end of the second-stage flotation machine and is used for collecting tailings of the second-stage flotation machine.

4. The system according to claim 2, characterized in that The third material includes: The solid product at the outlet of the centrifugal dehydrator and the solid product after filtration by the filter press system; The filter pressing system is arranged at the outlet end of the second-stage flotation machine and is used for performing filter pressing on the flotation concentrate of the second-stage flotation machine.

5. The system according to claim 1, characterized in that The control device is configured to: Based on the real-time status information of the materials at each position, the trained dosage prediction model is called to obtain the dosage requirements of the first-stage flotation machine and the second-stage flotation machine corresponding to the real-time status information of the materials at each position; Generate a reagent control plan based on the reagent dosage requirements of the first-stage flotation machine and the second-stage flotation machine.

6. The system according to claim 5, characterized in that The training rules of the drug dosage prediction model include: Collecting historical flotation process information and performing preprocessing on the historical process information; The pre-processed historical process information is labeled with the dosage requirements of the corresponding first-stage flotation machine and the second-stage flotation machine, and training samples are constructed based on the labeled results; Model training is performed based on the training samples to obtain a drug dosage prediction model.

7. The system according to claim 5, characterized in that The execution device is configured as follows: Based on the reagent control scheme, respectively determine the reagent adjustment amount of the first stage flotation machine and the reagent adjustment amount of the second stage flotation machine to generate control instructions corresponding to the adjustment amount; The control instructions are respectively executed to perform reagent adjustment of the first stage flotation machine and reagent adjustment of the second stage flotation machine.

8. A coal flotation control method, characterized in that: The method is implemented based on the coal flotation control system according to any one of claims 1 to 7, and the method comprises: Collect real-time status information of materials at each detection position in the secondary flotation device; Based on the real-time status information of the materials at each detection position, the trained dosage prediction model is called to obtain the dosage control plan; Based on the reagent control scheme, reagent adjustment of the first stage flotation machine and reagent adjustment of the second stage flotation machine are performed.

9. The method according to claim 8, characterized in that The real-time status information includes: ash content information of the first material, particle size information of the second material and ash content information of the third material; wherein, The first material includes: The flotation essence of the first stage flotation machine and the flotation essence of the second stage flotation machine; The second material includes: The feed of the first flotation machine, the tailings of the first thickening system, the flotation concentrate of the first flotation machine, the feed of the second flotation machine, the tailings of the second thickening system and the flotation concentrate of the second flotation machine; wherein, The first concentration system is arranged at the outlet end of the first stage flotation machine, and is used to collect tailings from the first stage flotation machine; The second concentration system is arranged at the outlet of the second-stage flotation machine and is used to collect tailings from the second-stage flotation machine; The third material includes: The solid product at the outlet of the centrifugal dehydrator and the solid product after filtration by the filter press system; The filter pressing system is arranged at the outlet end of the second-stage flotation machine and is used for performing filter pressing on the flotation concentrate of the second-stage flotation machine.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the coal flotation control method described in any one of claims 8 and 9.

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