Method for rapidly cleaning residual flotation reagent

Abstract

The invention relates to the technical field of flotation reagent cleaning, in particular to a method for rapidly cleaning residual flotation reagents, which comprises the following steps: preparing a sodium hypochlorite solution; a sodium hypochlorite solution is applied to the to-be-cleaned object, the to-be-cleaned surface of the to-be-cleaned object is completely covered with the sodium hypochlorite solution, and the sodium hypochlorite solution flows on the to-be-cleaned surface; in the cleaning process, the concentration of sodium hypochlorite is continuously monitored; when the real-time concentration of the sodium hypochlorite is within a preset threshold range and is stable, separating the sodium hypochlorite solution from the to-be-cleaned object; the residual flotation reagent is cleaned by using the strong oxidizing property of sodium hypochlorite, organic components are decomposed into micromolecular and water-soluble substances, and meanwhile, the cleaning process is accelerated in cooperation with an auxiliary means.

Description

Technical Field

[0001] The present invention relates to the technical field of flotation reagent cleaning, and particularly to a method for quickly cleaning residual flotation reagents. Background Art

[0002] Ore flotation is an ore enrichment and separation technology widely used in the mining industry. It utilizes the differences in the physicochemical properties of the mineral surfaces, especially the different wettabilities of the mineral surfaces, to add specific flotation reagents to the ore slurry to achieve the separation of the target minerals from the gangue minerals, thereby improving the grade of the useful minerals in the ore and providing higher-quality raw materials for subsequent smelting and other processing operations.

[0003] However, after the flotation operation is completed, a large amount of flotation reagents often remain on the flotation equipment, the ore surface, etc. If the residual flotation reagents are not removed in time, it may have many adverse effects on the subsequent production processes, such as affecting the effect of the next batch of flotation, causing environmental pollution, etc.; Currently, the commonly used cleaning agents include the following categories, and each has significant drawbacks; Ordinary water, as the most basic cleaning agent, can play a certain cleaning role for a small amount of weakly adhered reagent residues, but when faced with stubborn reagents, ores with complex structures, or reagent residues in the pores of the ores, the cleaning effect is extremely limited; Acid-base chemical cleaning agents, such as hydrochloric acid, sodium hydroxide solution, etc. These cleaning agents are highly corrosive, posing a serious threat to the safety of operators. A slight mistake may lead to accidents such as burns. At the same time, they will corrode the cleaning equipment, greatly shortening the service life of the equipment and increasing the equipment maintenance cost; Surfactant-based cleaning agents, such as sodium dodecylbenzenesulfonate, etc. The cleaning effect of such cleaning agents is greatly affected by the ore properties and reagent types, and the cleaning effect for certain specific flotation reagent residues is not good; Chelating agent-based cleaning agents, such as ethylenediaminetetraacetic acid (EDTA). Chelating agents are expensive, and their usage conditions are relatively harsh. Parameters such as pH value and temperature need to be precisely controlled. Otherwise, the cleaning effect will be greatly reduced; With the development of technology, some complex cleaning technologies have also begun to be applied, such as ultrasonic-assisted cleaning, adding specific chemical reagents to enhance the cleaning effect, etc. However, these technologies often act independently and do not form a complete, efficient, and adaptable cleaning system for different situations.

[0004] The information disclosed in this background art section is only intended to deepen the understanding of the overall background art of the present invention, and should not be regarded as an admission or any form of implication that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a method for quickly cleaning residual flotation reagents, which uses the strong oxidizing property of sodium hypochlorite to clean the residual flotation reagents, decomposes the organic components into small molecule substances that are easily soluble in water, and at the same time cooperates with auxiliary means to accelerate the cleaning process.

[0006] A method for quickly cleaning residual flotation reagents of the present invention includes: Preparing a sodium hypochlorite solution; Applying the sodium hypochlorite solution to the object to be cleaned, so that the sodium hypochlorite solution completely covers the surface to be cleaned of the object to be cleaned and the sodium hypochlorite solution flows on the surface to be cleaned; During the cleaning process, continuously monitor the concentration of sodium hypochlorite; When the concentration of sodium hypochlorite in real time is within the preset threshold range and stable, separate the sodium hypochlorite solution from the object to be cleaned.

[0007] As a preferred embodiment of the present invention, the application method is: spraying onto the surface to be cleaned.

[0008] As a preferred embodiment of the present invention, the application method is: immersing the object to be cleaned.

[0009] As a preferred embodiment of the present invention, during immersion, auxiliary means are adopted to accelerate the cleaning process; A method for determining the optimal auxiliary means includes: Obtaining the concentration recommended value of the sodium hypochlorite solution; Obtaining multiple feasible solutions; Obtaining the unit residue amount of the residual flotation reagent, and based on the weight of the object to be cleaned, obtaining the total amount of the residual flotation reagent; Based on the concentration recommended value and the total amount, calculating the usage amount of the sodium hypochlorite solution; Obtaining the preset cleaning time, inputting each feasible solution, the characteristics of the object to be cleaned, the cleaning time, the characteristics and total amount of the residual flotation reagent, the concentration recommended value and the usage amount into the parameter model, and obtaining the parameters of each feasible solution; Setting influencing factors to serially adjust the feasible solutions and parameters to obtain the optimal auxiliary means.

[0010] As a preferred embodiment of the present invention, the auxiliary means includes at least one or more of mechanical stirring, ultrasonic oscillation, or air blowing aeration.

[0011] As a preferred embodiment of the present invention, the method for obtaining the concentration recommended value includes: Based on the process conditions adopted by the object to be cleaned in the flotation operation, obtaining the types of residual flotation reagents of the object to be cleaned; Obtaining the structural characteristics of the object to be cleaned; Match the structural characteristics and types with a pre-constructed association rule base to obtain the concentration recommendation value.

[0012] As a preferred embodiment of the present invention, the generating factors of feasible solutions at least include the characteristics of the object to be cleaned and the characteristics of the residual flotation reagents.

[0013] As a preferred embodiment of the present invention, the calculation method of the unit residue amount includes: Collect the process parameters of the flotation operations experienced by the object to be cleaned and input them into the unit residue amount prediction model to obtain the unit residue amount.

[0014] As a preferred embodiment of the present invention, the construction method of the parameter model includes: Collect multiple groups of data including cleaning time, feasible solutions and parameters, the characteristics of the object to be cleaned, the characteristics and total amount of residual flotation reagents, concentration recommendation values, usage amounts, and actual cleaning effects; Preprocess the data; Select a machine learning model as the basic architecture of the model; Use the processed data to train the model, and adjust the hyperparameters of the model according to the change of loss during the training process; Use an independent test set to evaluate the performance of the trained model on unseen data; Tune the model according to the evaluation results, and the tuning methods include adjusting the model architecture, modifying the loss function, and adjusting hyperparameters; Deploy the trained model to actual applications to predict and analyze new data.

[0015] As a preferred embodiment of the present invention, the influencing factors at least include cost and / or historical cleaning effects.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1) The strong oxidizing property of sodium hypochlorite used in the present invention makes it a powerful weapon for decomposing residual flotation reagents. It can accurately target the organic components in the flotation reagents, such as collectors containing unsaturated bonds, and disassemble complex macromolecules into small molecules that are easily soluble and have no flotation activity, achieving root cause removal; The hypochlorous acid generated by hydrolysis, relying on small molecules and strong penetrability, can penetrate deep into the combination of reagent residues and the object to be cleaned, strengthening the reaction effect; 2) Starting from obtaining the concentration recommendation value, the present invention accurately anchors the key cleaning conditions, laying a solid foundation for the subsequent links. It comprehensively considers the characteristics of the object to be cleaned and the residual flotation reagents, generates diverse feasible solutions, and broadens the selection space. By rigorously calculating the total amount of residual reagents, it reasonably plans the solution dosage, meeting the cleaning requirements while avoiding resource waste and environmental pollution. The parameter model comprehensively considers various key factors and obtains accurate parameters for each solution to ensure the best cleaning effect. Finally, weighing the actual influencing factors such as cost and historical cleaning effect, it serially adjusts the solutions and parameters to find a balance among multiple factors, making the entire cleaning process efficient and economical, greatly improving the accuracy and reliability of formulating the cleaning plan, and effectively ensuring the efficient and scientific development of the cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a flowchart of a method for quickly cleaning residual flotation reagents of the present invention; Figure 2 is a flowchart of a method for determining the optimal auxiliary means. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given in conjunction with the drawings in the specification.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0020] Secondly, the so-called "embodiment" herein refers to specific features, structures, or characteristics that can be included in at least one implementation manner of the present invention. The phrase "in an embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0021] In some embodiments of the present invention, Embodiment

[0022] Referring to Figure 1 , this embodiment provides a method for quickly cleaning residual flotation reagents, including: S1 Prepare sodium hypochlorite solution; Sodium hypochlorite has strong oxidizing properties, and this characteristic enables it to undergo redox reactions with many organic components in flotation reagents. In the process of mineral flotation, common flotation reagents such as flotation collectors containing unsaturated bonds, sodium hypochlorite can precisely break their chemical bonds and decompose the original complex organic macromolecules into small molecules. These small molecules are not only easily soluble in water but also lose their original flotation activity, fundamentally achieving the effective removal of residual reagents and greatly enhancing the depth and thoroughness of the cleaning effect. At the same time, sodium hypochlorite will hydrolyze in solution to form hypochlorous acid. The hypochlorous acid molecule is small and has strong penetration ability, which can easily penetrate the residual layer of flotation reagents and reach the binding site between the residual reagents and the surface of the object to be cleaned, further promoting the reaction between the reagent and sodium hypochlorite, thus significantly improving the cleaning effect. S2 Apply the sodium hypochlorite solution to the object to be cleaned, and the sodium hypochlorite solution completely covers the surface to be cleaned of the object to be cleaned and there is sodium hypochlorite solution flowing on the surface to be cleaned; Completely covering the surface to be cleaned ensures that every part of the object to be cleaned can come into full contact with the sodium hypochlorite solution with strong oxidizing properties, which enables the sodium hypochlorite in the solution to undergo redox reactions with the residual flotation reagents in all directions, improving the cleaning. And the flow of the solution further optimizes the cleaning process, continuously updating the interface in contact with the reagent residues, timely taking away the small molecule products generated by the reaction, preventing their accumulation from hindering subsequent reactions, and at the same time continuously bringing new sodium hypochlorite and hydrolyzed hypochlorous acid, maintaining an efficient reaction environment, making the cleaning effect more thorough, greatly improving the efficiency and quality of cleaning the residual flotation reagents, and achieving deep cleaning of various objects to be cleaned. S4 During the cleaning process, continuously monitor the concentration of sodium hypochlorite; More specifically, the concentration of sodium hypochlorite is measured online in real time by the electrochemical sensor method or the optical sensor method. S4 When the concentration of sodium hypochlorite in real time is within the preset threshold range and stable; More specifically, the threshold range can be determined through experiments; When the concentration of sodium hypochlorite is within the preset threshold range and stable, since no more flotation reagents participate in the reaction, the concentration of the sodium hypochlorite solution no longer changes due to reaction consumption, directly reflecting that the reaction between sodium hypochlorite and flotation reagents in the cleaning system has been completed thoroughly, and the cleaning of residual flotation reagents is finished. Then separate the sodium hypochlorite solution from the object to be cleaned; The separation method is: Use rinsing water to clean the object to be cleaned until the pH value of the rinsing water is close to neutral and then stop. In the above method, first, due to its strong oxidizing property, sodium hypochlorite can undergo redox reactions with the organic components in the flotation reagents, such as flotation collectors containing unsaturated bonds, decomposing complex organic macromolecules into small molecules that are soluble in water and lose their flotation activity, effectively removing residual reagents fundamentally. At the same time, the hypochlorous acid generated by its hydrolysis can penetrate the residual layer, further improving the cleaning effect. Second, completely covering the sodium hypochlorite solution and making it flow on the surface of the object to be cleaned can ensure full coverage without cleaning dead spots. Flowing can continuously update the reaction interface, carry away reaction products and bring new active components, maintaining an efficient reaction. Third, using the electrochemical sensor method or the optical sensor method to monitor the concentration of sodium hypochlorite online in real time can accurately control the cleaning process. When the concentration is within the preset threshold range and stable, it can accurately determine that the reaction in the cleaning system is completed thoroughly. At this time, separating the solution by washing the object to be cleaned with rinsing water until the pH value of the rinsing water is close to neutral not only ensures the cleaning effect but also realizes reasonable control of the end state of cleaning. The whole method comprehensively guarantees an efficient, accurate and thorough cleaning process from the action of the reagent, cleaning operation to concentration monitoring and end determination.

[0023] In some embodiments of the present invention, the application method is: spraying it onto the surface to be cleaned. This method is applicable when the object to be cleaned is equipment. When spraying, it is necessary to ensure complete coverage of the surface to be cleaned of the object to be cleaned and have sodium hypochlorite solution flowing on the surface to be cleaned. Using the spraying method can greatly reduce the use of sodium hypochlorite solution. At the same time, the flowing mentioned here means that there is a small amount of sodium hypochlorite solution remaining on the surface of the equipment to maintain the reaction activity.

[0024] In some embodiments of the present invention, the application method is: immersing the object to be cleaned. This method is applicable when the object to be cleaned is ore. During the immersion process, since the ore is surrounded by sodium hypochlorite solution as a whole, sodium hypochlorite and hypochlorous acid can penetrate the residual layer of the flotation reagent from all directions and reach the combination part between the flotation reagent and the ore surface, greatly enhancing the reaction effect.

[0025] In some embodiments of the present invention, during immersion, auxiliary means are used to accelerate the cleaning process; Refer to Figure 2 , and the determination method of the optimal auxiliary means includes: Q1 Obtain the recommended concentration value of the sodium hypochlorite solution; Q2 Obtain multiple feasible solutions. The feasible solutions mentioned here are at least one auxiliary means, without referring to the specific parameters adopted by the auxiliary means; Q3 Obtain the unit residue amount of the residual flotation reagent, and based on the weight of the object to be cleaned, obtain the total amount of the residual flotation reagent; Q4 Calculate the usage amount of the sodium hypochlorite solution based on the recommended concentration value and the total amount; Q5 Obtain the preset cleaning time, input each feasible solution, the characteristics of the object to be cleaned, the cleaning time, the characteristics and total amount of the residual flotation reagent, and the recommended values and usage amounts of the concentration into the parameter model to obtain the parameters of each feasible solution; among them, the preset cleaning time is obtained according to the production task. Q6 Set the influencing factors to serially adjust the feasible solutions and parameters to obtain the optimal auxiliary means.

[0026] The method for determining the optimal auxiliary means adopted in the present invention takes obtaining the recommended value of the sodium hypochlorite solution concentration as the starting point, accurately sets the key conditions in the cleaning process, and lays a solid foundation for subsequent links; based on the characteristics of the object to be cleaned and the residual flotation reagent, comprehensively considers various factors, generates multiple feasible solutions, and provides rich options for subsequent screening; by rigorously calculating the total amount of the residual reagent, and then reasonably determining the solution usage amount, while meeting the cleaning requirements, effectively avoiding the problems of resource waste and environmental pollution; with the help of the parameter model, comprehensively analyzes various factors, and obtains accurate optimal parameters for each feasible solution on the basis of the best cleaning effect; finally, comprehensively weighs the actual influencing factors such as cost and equipment loss, serially adjusts the feasible solutions and parameters, and achieves an ideal balance among multiple influencing factors to ensure the high efficiency and economy of the entire cleaning process.

[0027] In some embodiments of the present invention, the auxiliary means includes at least one or more of mechanical stirring, ultrasonic oscillation, or air blowing aeration. More specifically, if mechanical stirring is selected, a stirring device can be installed in the soaking tank, and the motor drives the stirring blades to rotate at a certain speed, so that the sodium hypochlorite solution forms a circulating flow in the soaking tank, continuously flushing the object to be cleaned, and promoting the full contact reaction between the solution and the residual flotation reagent; if ultrasonic oscillation is adopted, the ultrasonic generator is connected to the soaking tank, and the electric energy is converted into high-frequency mechanical vibration through the ultrasonic transducer, and the generated microbubbles burst in the solution, forming local high pressure and high temperature, enhancing the cleaning effect; if air blowing aeration is selected, an aeration head is arranged at the bottom of the soaking tank, air is blown into the solution, and the generated bubbles drive the solution to flow, increasing the oxygen content of the solution and enhancing the oxidation ability of sodium hypochlorite. In addition to the methods mentioned above, the optimal solution also includes temperature control, pulsed electric field treatment, etc. The optimal solution can be a combined solution of one or more methods, which is determined according to the characteristics of the object to be cleaned and the characteristics of the residual flotation reagent.

[0028] In some embodiments of the present invention, the method for obtaining the recommended concentration value includes: Based on the process conditions adopted in the flotation operation of the object to be cleaned, obtain the types of residual flotation reagents of the object to be cleaned; the process conditions of the flotation operation clarify the reagent addition link, and different flotation targets of ores correspond to specific reagents. For example, xanthate is often added to sulfide ores, and fatty acids are used for oxidized ores, which directly indicates the direction of residual reagents; Obtain the structural characteristics of the object to be cleaned; Input the structural characteristics and types into the pre-constructed association rule library for matching to obtain the concentration recommendation value; more specifically, the chemical structures, stabilities, and redox potentials of different residual flotation reagents are different, making the difficulty and required dosage of their reaction with sodium hypochlorite different. For example, sulfur-containing collectors are relatively active and may require a higher concentration of sodium hypochlorite to be completely oxidized and decomposed; in terms of the structural characteristics of the object to be cleaned, if the porosity is high and the specific surface area is large, the sodium hypochlorite solution is easy to penetrate, and a low concentration may be able to meet the cleaning requirements; if the structure is dense, the reagent residue is difficult to contact inside, and only by increasing the concentration of sodium hypochlorite and enhancing its penetration and reaction ability can the residual reagent be effectively removed; therefore, the two jointly determine the recommended value of sodium hypochlorite concentration to ensure the cleaning effect and avoid over-cleaning.

[0029] More specifically, the construction method of the association rule library includes: Collect data from actual operation scenarios and laboratory experiments. The data includes the types of residual flotation reagents, the structural characteristics of the object to be cleaned, and the corresponding concentrations of sodium hypochlorite solution, and label and classify the collected data; Clean abnormal data, standardize the data format, and unify the coding system of the types of residual flotation reagents and the units of the structural characteristic data of the object to be cleaned; Use data mining algorithms to analyze the preprocessed data, set the minimum support and minimum confidence, and mine the association rules between the types of residual flotation reagents, the structural characteristics of the object to be cleaned, and the concentration of sodium hypochlorite solution; Sort out the mined association rules and input them into the association rule library, present them in tabular form, record the support and confidence of the rules, and at the same time establish an index for the types of residual flotation reagents and the structural characteristics of the object to be cleaned, and establish a query mechanism; Use new data to verify the association rule library, calculate indicators such as accuracy and recall rate, dynamically update the rule library according to the verification results, re-evaluate and adjust low-performance rules, and supplement newly mined rules; After the association rule library is constructed, input the structural characteristics of the object to be cleaned and the types of residual suspended reagents collected into the association rule library, and the association rule library outputs the recommended value of the sodium hypochlorite concentration that matches them.

[0030] In some embodiments of the present invention, the generating factors of feasible solutions at least include the characteristics of the object to be cleaned and the characteristics of residual flotation reagents; The characteristics of the object to be cleaned, such as material, shape, structure, surface roughness, etc., will affect the selection of auxiliary means. For example, for an object with a complex structure and small pores, ultrasonic oscillation may be more conducive to the agent penetrating into the pores for cleaning; The characteristics of the residual flotation agent, including chemical composition, solubility, viscosity, adhesion, etc., determine the difficulty of cleaning and the applicable cleaning mechanism; for example, for an agent with high viscosity, air blowing can help reduce its viscosity through air flow disturbance, which is conducive to cleaning; for an agent with poor solubility, ultrasonic oscillation can enhance the dissolution effect of the solvent on the agent through cavitation; therefore, comprehensively considering the characteristics of the object to be cleaned and the residual flotation agent can provide a basis for selecting appropriate cleaning auxiliary means (such as mechanical stirring, ultrasonic oscillation or air blowing) to achieve efficient and non-destructive cleaning effects; In addition to the above generation factors, the generation factors also include cleaning environment, safety and environmental protection and other factors, which will not be elaborated. After the characteristics of the object to be cleaned and the residual flotation agent are determined, the determination of the feasible solution mainly depends on expert knowledge and historical experience. With the profound professional qualities accumulated in this field for a long time, experts are well aware of the characteristics of the materials, structures, etc. of various objects to be cleaned and the chemical properties, adhesion characteristics, etc. of the residual flotation agent, and can quickly judge the suitable cleaning auxiliary means according to these characteristics, such as which one of mechanical stirring, ultrasonic oscillation or air blowing is more suitable; at the same time, a large number of past historical practice data record the cleaning schemes adopted under different characteristic combinations and their effect feedback.

[0031] In some embodiments of the present invention, the calculation method of the unit residue amount includes: Collect the process parameters of the flotation operation experienced by the object to be cleaned and input them into the unit residue amount prediction model to obtain the unit residue amount; More specifically, the unit residue amount prediction model can select a common machine learning model, such as a neural network model. First, construct the model framework, determine the number of nodes in the input layer, hidden layer and output layer. The nodes in the input layer correspond to various collected process parameters. The hidden layer learns the complex relationships between parameters through training, and the output layer outputs the predicted unit residue amount. Use a large amount of existing flotation operation process parameter data and the corresponding actual unit residue amount data to train the model; during the training process, continuously adjust the weights and biases of the model to make the prediction result of the model as close as possible to the actual value; after the training is completed, input the process parameters of the flotation operation of the object to be cleaned collected into this model to obtain the unit residue amount; Using the above method to calculate the unit residue amount, leveraging the powerful learning and analysis capabilities of the machine learning model to learn from a large amount of historical data, and mining the complex internal relationship between the process parameters of the flotation operation and the unit residue amount. The comprehensively collected process parameters provide rich information for the model. The adjustment of weights and biases during the training process can improve the prediction accuracy. Compared with traditional methods, it is more accurate and efficient, can effectively reduce human estimation errors, provide a reliable basis for formulating subsequent cleaning plans, and strongly guarantee the scientific and efficient implementation of the cleaning work.

[0032] In some embodiments of the present invention, a method for constructing a parameter model includes: Collecting multiple sets of data including cleaning time, feasible solutions and parameters, characteristics of the object to be cleaned, characteristics and total amount of residual flotation reagents, recommended concentration values, usage amounts, and actual cleaning effects; More specifically, in the data collection stage, through on-site observation, experimental records, etc., for different cleaning instances, record the cleaning time in detail, such as accurate to the minute; comprehensively sort out the feasible solutions, including parameters such as the rotation speed of mechanical stirring, the frequency of ultrasonic oscillation, etc.; use professional detection equipment to accurately measure the characteristics of the object to be cleaned, such as the hardness and porosity of ores; analyze the characteristics and total amount of residual flotation reagents, and use chemical analysis methods to determine the reagent composition and residual amount; obtain the recommended concentration values based on past experience and experiments, calculate the usage amount of sodium hypochlorite solution, and truthfully record the actual cleaning effects, such as the degree of reagent residue after cleaning, etc.; Preprocessing the data; more specifically, performing denoising processing on the collected data to remove obviously incorrect or abnormal data points; filling in missing values, which can be done using methods such as mean and median, and normalizing the data to unify data of different magnitudes into the same range for convenient model learning; Selecting a machine learning model as the basic architecture of the model; more specifically, in terms of model selection, a machine learning model such as a multi-layer perceptron (MLP) can be selected. When constructing the model architecture, set the input layer to correspond to various types of data collected, such as cleaning time, data on the characteristics of the object to be cleaned, data on the characteristics of residual flotation reagents, etc. as input nodes, set several hidden layers in the middle, and through training, the hidden layers can automatically learn the complex non-linear relationships between the input data. The output layer is set to output the specific parameters of each feasible solution, such as the optimal speed range of mechanical stirring, the appropriate power value of ultrasonic oscillation, etc.; Train the model using the processed data, and adjust the hyperparameters of the model according to the change of loss during the training process; more specifically, input the preprocessed data into a multi-layer perceptron model, use the error between the feasible solution parameters predicted by the model and the parameters of the effective solution in actual cleaning as the loss function. During the training process, with the help of optimization algorithms such as stochastic gradient descent, continuously adjust the hyperparameters of the model according to the change of loss, such as the number of hidden layers, the number of neurons in each layer, the learning rate, etc.; Evaluate the performance of the trained model on unseen data using an independent test set; Tune the model according to the evaluation results. The tuning methods include adjusting the model architecture, modifying the loss function, and adjusting the hyperparameters; Deploy the trained model to actual applications for prediction and analysis of new data; In the above method, the model is trained and tuned based on a large amount of comprehensive cleaning-related data, which can accurately mine the complex internal relationships between various factors. Through multi-step collaborative optimization, it can quickly and accurately output the specific parameters of the feasible solution according to the input data of the new cleaning scenario. This avoids the subjectivity and limitations of manual experience judgment, reduces the time and cost of repeated experiments, improves the efficiency and scientificity of cleaning plan formulation, enables operators to quickly obtain the most suitable cleaning plan parameters, and effectively improves the cleaning effect of residual flotation agents and the overall work efficiency.

[0033] In some embodiments of the present invention, the influencing factors at least include cost and / or historical cleaning effect; In terms of cost, a detailed analysis should be carried out on the various costs involved in each feasible solution and its parameters. Different auxiliary means, such as mechanical stirring, ultrasonic oscillation, or air blowing aeration, have different corresponding equipment purchase, operation, and maintenance costs; for example, the power of the mechanical stirring equipment will affect the energy consumption cost. Although a large-power equipment may have a fast cleaning speed, its energy consumption is also high; the service life and maintenance frequency of the ultrasonic oscillation equipment will affect the long-term cost; at the same time, the labor cost should also be considered. Different solutions may require different numbers and skill levels of operators, which will all be reflected in the cost; Regarding the consideration of the feasible solution based on the historical cleaning effect, a comprehensive historical cleaning effect database should be established, which details the feasible solutions, corresponding parameters, and final cleaning effects adopted in each cleaning operation; the cleaning effect can be measured by indicators such as the removal rate of residual flotation agents and the quality change of the object to be cleaned after cleaning. When there is a new cleaning task, find similar historical cases from the database according to the characteristics of the object to be cleaned and the characteristics of the residual flotation agents; analyze the cleaning effects brought by different feasible solutions and parameters in these cases, and summarize which parameter combinations can achieve better cleaning effects and which ones have deficiencies; In addition to the above influencing factors, it also includes safety risks, environmental protection, equipment performance, etc.; Combining the two influencing factors of cost and historical cleaning effect, serialize and adjust each feasible solution and parameter. The specific method is as follows: After calculating the cost of each feasible solution and parameter and considering the historical cleaning effect, score each feasible solution and parameter in the above two aspects. In order to distinguish the importance of the above two factors, different weights can also be assigned to the above two factors respectively. Calculate the comprehensive score of each feasible solution and parameter according to the following formula, and sort the solutions from high to low according to the comprehensive score. Accelerate the cleaning process according to the feasible solution and parameter corresponding to the highest comprehensive score; Comprehensive score = cost score × cost weight + cleaning effect score × cleaning effect weight.

[0034] In some embodiments of the present invention, the calculation method of the usage amount of sodium hypochlorite solution includes: Based on the principle of chemical reaction, obtain the stoichiometric ratio of the flotation reagent reacting with sodium hypochlorite through experiments; Convert the total amount of residual flotation reagent into the amount of substance, and then calculate the amount of substance of sodium hypochlorite required for the reaction according to the previously determined reaction ratio. Finally, calculate the mass of sodium hypochlorite theoretically required to completely react with the residual flotation reagent according to the molar mass of sodium hypochlorite; Considering the actual cleaning needs, in order to ensure the cleaning effect, an additional percentage is added as a margin on the basis of the theoretically calculated amount of sodium hypochlorite; for example, 10% is added on the basis of the theoretical amount to determine the total amount of sodium hypochlorite actually required; According to the known concentration recommended value, according to the formula that the solution mass is equal to the solute mass divided by the mass fraction, take the total amount of sodium hypochlorite actually required determined above as the solute mass, substitute it into the formula, and calculate the usage amount of sodium hypochlorite solution.

[0035] In some embodiments of the present invention, the concentration of the sodium hypochlorite solution is 5 - 15%; this concentration range can ensure that sodium hypochlorite has sufficient oxidation activity, effectively react with the residual flotation reagent chemically, strongly decompose the reagent components, and achieve efficient cleaning. The lower concentration limit of 5% can avoid the problem of poor cleaning effect and greatly extended cleaning time caused by too low concentration; the upper limit of 15% prevents waste of reagents and increased costs caused by too high concentration, and at the same time reduces the corrosion risk that may be brought by high-concentration reagents, playing a protective role for the equipment and the object to be cleaned, taking into account both the cleaning effect and economy and safety.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A method for quickly cleaning residual flotation reagents, characterized in that: include: Prepare sodium hypochlorite solution; Applying the sodium hypochlorite solution to the object to be cleaned, wherein the sodium hypochlorite solution completely covers the surface to be cleaned of the object to be cleaned and the sodium hypochlorite solution flows on the surface to be cleaned; During the cleaning process, the concentration of sodium hypochlorite was continuously monitored; When the real-time concentration of the sodium hypochlorite is within a preset threshold range and is stable, the sodium hypochlorite solution and the object to be cleaned are separated.

2. The method for rapidly cleaning residual flotation reagent according to claim 1, characterized in that: The method of applying is: spraying onto the surface to be cleaned.

3. The method for rapidly cleaning residual flotation reagent according to claim 1, characterized in that: The method of applying is: soaking the object to be cleaned.

4. The method for rapidly cleaning residual flotation reagent according to claim 3, characterized in that: When soaking, use auxiliary means to speed up the cleaning process; The method for determining the optimal auxiliary means comprises: Get the recommended concentration of sodium hypochlorite solution; Get multiple feasible solutions; Obtaining the unit residual amount of the residual flotation reagent, and obtaining the total amount of the residual flotation reagent according to the weight of the object to be cleaned; Calculating the usage of the sodium hypochlorite solution based on the recommended concentration value and the total amount; Obtaining a preset cleaning time, inputting each of the feasible solutions, the characteristics of the object to be cleaned, the cleaning time, the characteristics and the total amount of the residual flotation reagent, the recommended concentration value and the usage amount into a parameter model to obtain parameters of each of the feasible solutions; The influencing factors are set to perform serial adjustments on the feasible solutions and parameters to obtain the optimal auxiliary means.

5. The method for rapidly cleaning residual flotation reagent according to claim 4, characterized in that: The auxiliary means at least include one or more of mechanical stirring, ultrasonic oscillation or aeration.

6. The method for rapidly cleaning residual flotation reagent according to claim 4, characterized in that: The method for obtaining the recommended concentration value comprises: Based on the process conditions used in the flotation operation of the object to be cleaned, obtaining the type of residual flotation reagent of the object to be cleaned; Acquiring structural characteristics of the object to be cleaned; The structural characteristics and the types are input into a pre-built association rule library for matching to obtain the recommended concentration value.

7. The method for rapidly cleaning residual flotation reagent according to claim 4, characterized in that: The factors for generating the feasible solution at least include the characteristics of the object to be cleaned and the characteristics of the residual flotation reagent.

8. The method for rapidly cleaning residual flotation reagent according to claim 4, characterized in that: The calculation method of the unit residue includes: The process parameters of the flotation operation experienced by the object to be cleaned are collected and input into a unit residue prediction model to obtain the unit residue.

9. The method for rapidly cleaning residual flotation reagent according to claim 4, characterized in that: The method for constructing the parameter model comprises: Collect multiple sets of data including cleaning time, feasible solutions and parameters, characteristics of the object to be cleaned, characteristics and total amount of residual flotation reagents, recommended concentration values, usage, and actual cleaning effects; Preprocess the data; Select a machine learning model as the model’s infrastructure; Use the processed data to train the model and adjust the model's hyperparameters based on the change in loss during training; Use an independent test set to evaluate the performance of the trained model on unseen data; Tune the model based on the evaluation results. Tuning methods include adjusting the model architecture, modifying the loss function, and adjusting hyperparameters. Deploy the trained model to real-world applications to make predictions and analyze new data.

10. The method for rapidly cleaning residual flotation reagent according to claim 4, characterized in that: The influencing factors at least include cost and / or historical cleaning effects.

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