Lead water collecting device for metal lead smelting and collecting control method

Abstract

The invention relates to the technical field of lead refining, in particular to a lead water collecting device for metal lead smelting and a collecting control method. By monitoring the liquid level of the lead water in the lead water collecting tank and the change trend of the purity of the lead water and combining the historical lead discharging rate, the filtering precision of the lead water is adjusted; according to the change correlation between the liquid level of the molten lead and the liquid level of the molten iron, further combining the change of the liquid level of the molten lead and the temperature of the molten lead, and controlling the discharge of the molten lead; and after discharging, according to the lead water amount change before and after discharging and the pressure at the bottom of the tank, the cleaning strength of the sediments in the lead water collecting tank is adjusted by combining the deposition coefficient during discharging. When the lead water is collected, certain filtering is carried out, the degree that impurities block the lead discharging holes is reduced, the purity of the lead water is improved, the deposition blocking possibility and the lead water overflowing possibility in the lead water collecting tank are accurately judged, the discharging opportunity is determined, control cleaning is carried out after discharging, and the output effect of the lead water is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lead refining, and particularly relates to a lead water collection device and a collection control method for metal lead smelting. Background Art

[0002] Lead is a heavy metal element, which is widely used in the manufacturing of storage batteries, alloys, radiation protection materials, building materials, etc. Currently, metal lead is mainly extracted by smelting lead-containing ores. Lead-containing iron ore is also a source for extracting metal lead. The lead-containing iron ore is fed into a smelting device for smelting. During the smelting process, lead water, molten iron, and crude zinc oxide are produced to obtain metal lead. The smelting device mainly includes a smelting furnace, a molten iron collection tank, and a lead water collection tank. Molten iron flows from the smelting furnace to the molten iron collection tank after slag avoidance. Lead water flows downward due to its greater density and penetrates through the gaps between refractory bricks and carbon bricks at the bottom of the smelting furnace, falls into the lead water collection tank, and is discharged through a lead discharge port. However, the capacity of the lead water collection tank is limited, and during long-term use, situations such as solidification of residual lead water and gradual accumulation of impurities carried during lead water penetration may occur, resulting in more attachments in the collection tank or blockage of the lead discharge port. Regular manual discharge and cleaning are required to avoid affecting the normal discharge of lead water. However, the regular treatment method cannot accurately control the treatment time node, and long-term human contact is prone to lead poisoning, and the lead water collection effect is poor. Summary of the Invention

[0003] In order to solve the technical problem of poor collection effect of lead water in the prior art, the purpose of the present invention is to provide a lead water collection device and a collection control method for metal lead smelting. The specific technical solutions adopted are as follows: A lead water collection device for metal lead smelting, the lead water collection device is applicable to a smelting device, the smelting device includes a molten iron collection tank and a lead water collection tank, and the lead water collection device includes: A collection module: used to obtain the lead water level, lead water temperature, lead water purity, bottom pressure at different measurement points in the lead water collection tank, and the molten iron level in the molten iron collection tank in the smelting device body at each moment; A filtering module: used to adjust the filtering accuracy of lead water at each moment according to the historical change trend of the lead water level and lead water purity, combined with the change rate of the lead water level during historical lead water discharge; A lead discharge module: used to obtain the deposition coefficient in the lead water collection tank at each moment according to the historical change correlation between the lead water level and the molten iron level; at each moment, control the lead water discharge according to the historical change of the lead water level and lead water temperature, combined with the deposition coefficient; A cleaning module: used to adjust the cleaning intensity of the sediment in the lead water collection tank after each lead water discharge according to the change in the amount of lead water before and after discharge and all the bottom pressures, combined with the deposition coefficient during discharge.

[0004] Further, the collection module is further configured to, at each moment, use the historical period between each moment and the time after the last complete discharge and cleaning as the target analysis period, and fit the lead water level change curve and the lead water purity change curve within the target analysis period; fit the lead water level drop curve in the lead water collection tank during each historical lead water discharge process.

[0005] Further, the method for adjusting the filtration accuracy of lead water includes: Taking the negative correlation mapping result of the slope of the lead water purity change curve at each moment as the first required accuracy; taking the reciprocal of the absolute value mean of the slope of each lead water level drop curve as the second required accuracy; taking the slope of the lead water level change curve at each moment as the third required accuracy; At each moment, fuse the first required accuracy, the second required accuracy, and the third required accuracy, take the normalized value of the fusion result as the filtration parameter, take the filtration parameter as the adjustment weight, and weight the maximum filtration accuracy of the filtration module with the adjustment weight, and take the weighted result as the filtration accuracy.

[0006] Further, the method for obtaining the deposition coefficient includes: Taking the normalized value of the difference between the molten iron levels corresponding to each moment and the previous adjacent moment as the molten iron change parameter; taking the normalized value of the difference between the lead water levels corresponding to each moment and the previous adjacent moment as the lead water change parameter; Taking the difference between the molten iron change parameter and the lead water change parameter as the deposition coefficient in the lead water collection tank at each moment.

[0007] Further, the method for controlling the lead water discharge includes: At each moment, according to the deviation of the lead water level relative to the preset maximum level, and in combination with the slope of the lead water level change curve and the change information of the lead water temperature within the target analysis period, obtain the solidification probability of the lead water in the lead water collection tank; At each moment, fuse the deposition coefficient and the solidification probability, and take the negative correlation normalized result of the fusion result as the collection effect parameter of the lead water collection tank; At each moment, determine the discharge condition according to the collection effect parameter and the lead water level, and control the lead water discharge when the discharge condition is met.

[0008] Further, the method for obtaining the solidification probability includes: At each moment, taking the difference between the preset maximum level and the lead water level as the numerator, taking the slope of the lead water level change curve within the corresponding target analysis period as the denominator, and taking the fractional ratio as the remaining amount parameter in the lead water collection tank; Take the deviation of the molten lead temperature at each moment relative to the maximum molten lead temperature within the target analysis period as the cooling parameter of the molten lead in the molten lead collection tank at each moment. Fuse the remaining amount parameter and the cooling parameter, and take the normalized value of the fusion result as the solidification probability of the molten lead in the molten lead collection tank at the corresponding moment.

[0009] Further, the discharge condition is that the molten lead liquid level is equal to the preset maximum liquid level or the collection effect parameter is less than the preset effect threshold.

[0010] Further, the method for adjusting the cleaning intensity of the sediment in the molten lead collection tank includes: After each discharge of molten lead, obtain the solidified retention amount of the molten lead in the molten lead collection tank according to the difference in the amount of molten lead collected before and after the discharge, and obtain the cleaning difficulty coefficient of the solidified retention amount of the molten lead in the molten lead collection tank according to the difference in the bottom pressure of the tank at different measuring points. According to the solidified retention amount of the molten lead, the cleaning difficulty coefficient and the deposition coefficient, adjust the minimum cleaning intensity of the cleaning module to obtain the adjusted cleaning intensity.

[0011] Further, the method for obtaining the adjusted cleaning intensity includes: Fuse the solidified retention amount of the molten lead, the cleaning difficulty coefficient and the deposition coefficient, take the normalized value of the fusion result plus the constant 1 as the intensity adjustment weight, and use the intensity adjustment weight to weight the preset initial cleaning intensity, and take the weighted result as the cleaning intensity.

[0012] A method for controlling the collection of molten lead in the smelting of metallic lead, the method includes: Obtain the cleaning intensity of the sediment in the molten lead collection tank of a molten lead collection device for the smelting of metallic lead; according to the cleaning intensity of the sediment in the molten lead collection tank, clean the sediment in the molten lead collection tank.

[0013] The present invention has the following beneficial effects: The present invention monitors the change trends of the molten lead liquid level and the molten lead purity in the molten lead collection tank, combines the historical lead discharge rate, and adjusts the filtration accuracy of the molten lead; then, according to the change correlation between the molten lead liquid level and the molten iron liquid level, obtains the deposition coefficient in the molten lead collection tank, and further combines the historical changes of the molten lead liquid level and the molten lead temperature to control the discharge of molten lead; then, after the discharge of molten lead, according to the change in the amount of molten lead before and after the discharge and all the bottom pressures of the tank, and in combination with the deposition coefficient during the discharge, adjusts the cleaning intensity of the sediment in the molten lead collection tank. The present invention performs a certain filtration during the collection of molten lead, reduces the degree of impurity blockage of the lead discharge hole and improves the purity of the molten lead, accurately judges the possibility of sediment blockage and the possibility of molten lead overflow in the molten lead collection tank, determines the discharge timing and controls the cleaning after the discharge, and improves the output and collection effect of the molten lead. Brief Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the accompanying drawings required for describing the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a module diagram of a lead water collection device for metal lead smelting provided by an embodiment of the present invention.

[0016] The reference numerals in the figure are: 101, acquisition module; 102, filtration module; 103, lead discharge module; 104, cleaning module. Detailed Embodiments

[0017] In order to further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following combines the accompanying drawings and preferred embodiments to detail the specific embodiments, structures, features and effects of a lead water collection device and a collection control method for metal lead smelting according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs.

[0019] The following specifically describes the specific solutions of a lead water collection device and a collection control method for metal lead smelting provided by the present invention with reference to the accompanying drawings.

[0020] Please refer to Figure 1 , which shows a module diagram of a lead water collection device for metal lead smelting provided by an embodiment of the present invention. The device includes an acquisition module 101, a filtration module 102 installed on the top of the lead water collection tank, a lead discharge module 103 and a cleaning module 104 installed inside the lead water collection tank; The acquisition module 101 includes various sensors for collecting relevant data during the smelting process, and transmitting the relevant data collected by each sensor to a local computing unit or the cloud for analysis and calculation to control the other modules to perform relevant actions; Among them, the sensors include: a liquid level sensor located on the inner wall of the non-lead discharge hole side of the lead water collection tank for collecting the lead water level; a temperature sensor located on the inner wall of the center of the lead water collection tank for collecting the lead water temperature; a purity sensor located on the inner wall of the center bottom of the lead water collection tank for collecting the lead water purity; several pressure sensors evenly distributed on the inner wall of the bottom of the lead water collection tank for collecting the bottom pressure in the lead water collection tank and evaluating the sediment retention situation; a liquid level sensor located on the inner wall of the molten iron collection tank below the iron water channel for collecting the molten iron level. The filtering module 102 is located between the lead water collection tank and the furnace body and is used to further filter the lead water before it seeps into the lead water collection tank. It includes a filtering device with controllable precision, and the filtering precision is controlled by adjusting the mesh area of the filter screen. The lead discharge module 103 is located in the lead water collection tank and is used to control the opening and closing of the lead discharge hole to control the discharge of the lead water in the lead water collection tank. The cleaning module 104 is located on the non-lead discharge port side of the lead water collection tank and is mainly a high-temperature gas flow spray gun control device. It contains several nozzles evenly distributed at the inner wall of the bottom of the lead water collection tank. By regulating the jet force of each nozzle, the high-temperature gas flow is used to melt the sediment and blow it away from the lead water collection tank to clean the sediment in the lead water collection tank.

[0021] It should be noted that the implementer can also set the position and quantity of the sensors according to the actual application situation, which will not be elaborated here.

[0022] It should be noted that the implementation scenario targeted by the embodiments of the present invention is as follows: during the smelting process, it is necessary to periodically discharge the lead water in the lead water collection tank and clean the sediment in the lead water collection tank after each complete discharge; after the cleaning is completed, the lead water is collected again, and the collection, discharge, and cleaning of the sediment are continuously carried out to avoid the overflow or blockage of the lead water in the lead water collection tank; the material preparation and feeding during the smelting process are all well-known prior arts to those skilled in the art and will not be elaborated here.

[0023] The acquisition module 101: is used to obtain the lead water level, lead water temperature, lead water purity, bottom pressure at different measurement points in the lead water collection tank, and the molten iron level in the molten iron collection tank of the smelting device body at each moment.

[0024] In an embodiment of the present invention, first, at each moment, various sensors set in the acquisition module 101 are used to collect the lead water level, lead water temperature, lead water purity, bottom pressure at different measurement points in the lead water collection tank, and the molten iron level in the molten iron collection tank of the smelting device body.

[0025] It should be noted that the acquisition frequency of all sensors is set to once per second, and relevant data is collected synchronously. Implementers can also set other sampling frequencies by themselves, but it is necessary to ensure that the acquisition frequencies of all sensors are the same to ensure data synchronization during subsequent analysis. The number of measurement points is set to 8, that is, 8 pressure sensors are arranged at equal intervals at the bottom of the lead water collection tank. Implementers can also customize the number. The selection, layout, and acquisition of all sensors are already existing technologies and will not be elaborated here.

[0026] In another embodiment of the present invention, after obtaining the acquisition data of each sensor at each moment, further at each moment, the historical period between each moment and the time after the last complete discharge and cleaning is used as the target analysis period, that is, each moment is a moment during the process of a lead water collection tank collecting lead water, to prepare for determining the discharge moment and the execution adjustment of other modules in the future. Specifically, based on the least squares method, the lead water level change curve and the lead water purity change curve within the target analysis period are fitted, and the lead water level decline curve in the lead water collection tank during each historical lead water discharge process is fitted.

[0027] It should be noted that each moment corresponds to a target analysis period, and each sensor also corresponds to a change curve at each moment. The historical lead water discharge process is the period between the start of lead water discharge and the moment when the lead water level in the lead water collection tank is 0. The least squares method for fitting curves is already a well-known technology and will not be elaborated here.

[0028] Filtering module 102: It is used to adjust the filtering accuracy of lead water at each moment according to the historical change trends of the lead water level and lead water purity, in combination with the change rate of the lead water level during historical lead water discharge.

[0029] Considering that during each lead water collection process, if the lead water level in the lead water collection tank gradually rises while the lead water purity gradually decreases, it indicates that the lead water may carry some impurities during seepage, and at the same time, it also indicates that the lead water collection tank may be approaching the maximum collection limit. Also considering the change rate of the lead water level during historical lead water discharge, it also reflects the blockage situation of the lead discharge holes in the lead water collection tank to some extent. At this time, it is necessary to adjust the accuracy of the filtering module to reduce the lead water collection rate while increasing the lead water purity. Based on this, the embodiment of the present invention will adjust the filtering accuracy of lead water at each moment according to the historical change trends of the lead water level and lead water purity, in combination with the change rate of the lead water level during historical lead water discharge.

[0030] Preferably, in an embodiment of the present invention, considering that the slope can reflect the changing trend of the curve, when the slope of the lead water purity change curve is less than zero and the larger the absolute value, it indicates that the purity decrease rate is greater, and the filtration accuracy should be adjusted larger. Therefore, the slope can be negatively correlated and mapped, and the greater the obtained first required accuracy; when the slope of the lead water level decrease curve is less than zero and the larger the absolute value, it indicates that the lead water discharge rate is greater, and the possibility of the lead discharge port being blocked by sediment is smaller. Therefore, take the reciprocal of the absolute value of the slope, and the obtained second required accuracy is smaller; when the slope of the lead water level change curve is greater than zero and the larger it is, it indicates that the seepage filtration speed of the lead water is faster, and when the purity decrease speed is faster, it further indicates that the poor filtration accuracy leads to fast filtration speed and low purity, and the third required accuracy is greater; combining the three can determine the filtration accuracy requirement. Based on this, the method for adjusting the filtration accuracy of lead water includes: Taking the negatively correlated mapping result of the slope of the lead water purity change curve at each moment as the first required accuracy; taking the reciprocal of the absolute value mean of the slope of each lead water level decrease curve as the second required accuracy; taking the slope of the lead water level change curve at each moment as the third required accuracy; At each moment, fuse the first required accuracy, the second required accuracy and the third required accuracy, take the normalized value of the fusion result as the filtration parameter, take the filtration parameter as the adjustment weight, and use the adjustment weight to weight the maximum filtration accuracy of the filtration module, and take the weighted result as the filtration accuracy.

[0031] As an example, specifically calculate the slope of the lead water purity change curve and the slope of the lead water level decrease curve by the two-point method; then take the slope of the lead water purity change curve as x in exp(-x) in the exponential function with the natural constant e as the base for negative correlation mapping to obtain the first required accuracy; further multiply and combine the first required accuracy, the second required accuracy and the third required accuracy, and linearly normalize the product to obtain the filtration parameter, that is, the adjustment weight, at the corresponding moment; then multiply the adjustment weight by the maximum filtration accuracy to obtain the filtration accuracy at the corresponding moment.

[0032] It should be noted that obtaining the slope by the two-point method is already an existing technology and will not be elaborated; the slope of the lead water level decrease curve cannot be 0, so taking its reciprocal is meaningful; in other examples, the implementer can also normalize the slope of the lead water purity curve in the form of 1 - exp(x); basic mathematical operations such as addition or weighted summation can also be used to combine the three required accuracies.

[0033] Lead discharge module 103: used to obtain the deposition coefficient in the lead water collection tank according to the historical change correlation between the lead water level and the molten iron level at each moment; at each moment, control the lead water discharge according to the historical changes of the lead water level and the lead water temperature, in combination with the deposition coefficient.

[0034] Considering that during the smelting process, there is a certain proportional relationship between the output of lead water and molten iron, there is a certain correlation in the change between the lead water liquid level change curve and the molten iron liquid level change curve; when lead water solidifies and deposits and there are impurity deposits, the change of the lead water liquid level will be affected by the deposits, thereby affecting its correlation with the molten iron liquid level change; therefore, the historical change correlation between the lead water liquid level and the molten iron liquid level reflects to a certain extent the deposition situation in the lead water collection tank. Based on this, the embodiments of the present invention can obtain the deposition coefficient at each moment.

[0035] Preferably, in an embodiment of the present invention, considering that the shapes of the molten iron collection tank and the lead water collection tank are different, the liquid level changes per unit time are also different. Therefore, normalization processing is first performed on them, and then the correlation between the liquid level changes can be accurately analyzed; thus, the method for obtaining the deposition coefficient includes: Taking the normalized value of the difference between the molten iron liquid levels corresponding to each moment and the previous adjacent moment as the molten iron change parameter; taking the normalized value of the difference between the lead water liquid levels corresponding to each moment and the previous adjacent moment as the lead water change parameter; Taking the difference between the molten iron change parameter and the lead water change parameter as the deposition coefficient in the lead water collection tank at each moment.

[0036] As an example, specifically measure the difference in the form of the absolute value of the difference. The smaller the absolute value of the difference, the closer the change parameters are, the smaller the deposition possibility, and the smaller the deposition parameter.

[0037] In other examples, the implementer can also evaluate the difference according to the deviation degree of the ratio between the molten iron change parameter and the lead water change parameter from the relative constant 1.

[0038] In other embodiments of the present invention, the implementer can also linearly normalize the molten iron liquid level at each moment to fit the molten iron change curve within the target analysis period; similarly, refit the lead water change curve within the target analysis period; and then take the Pearson correlation coefficient between the molten iron change curve and the lead water change curve as The x in is adjusted by the negative correlation logic and normalized to obtain the deposition coefficient; so that when the Pearson correlation coefficient approaches 1 more, the normalized value is smaller, the historical change correlation is greater, and the deposition coefficient is smaller.

[0039] It should be noted that the implementer can also use other correlation coefficients to measure the change correlation between the two curves; the deposition coefficient can also be obtained by measuring the differences such as the mean square error between the two curves, and both of them and the Pearson correlation coefficient are well-known technologies and will not be elaborated here.

[0040] Considering that when the lead water level reaches a certain level, it may cause the lead water in the lead water collection tank to overflow; also considering that when there is sedimentation or blockage in the lead water collection tank, it may lead to a decrease in the subsequent lead discharge efficiency, which may in turn affect the subsequent lead water collection efficiency. Therefore, in the case of sedimentation, the lead water in the lead water collection tank should be emptied first and then the sediment in the tank should be cleaned up; Also considering that the decrease in the lead water temperature may also cause the lead water to solidify and deposit on the inner wall of the tank. At the same time, when the lead water level is low and the change is slower, it indicates that the lead water collection rate is slower, and the possibility of the lead water in the lead water collection tank solidifying is greater, which in turn affects the subsequent lead discharge efficiency; Therefore, in the embodiments of the present invention, at each moment, according to the historical changes of the lead water level and the lead water temperature, combined with the sedimentation coefficient, the lead water discharge is controlled.

[0041] Preferably, in an embodiment of the present invention, first, based on the above logic, the solidification probability of the lead water in the lead water collection tank is evaluated. Further, combined with the sedimentation coefficient, the collection effect of the lead water in the lead water collection tank is evaluated. When the sedimentation coefficient and the solidification probability are larger, the possibility of the lead water in the lead water collection tank solidifying is greater, and the collection effect is worse. The lead water should also be emptied as soon as possible and the solidified sediment should be cleaned up. Then, it is possible to determine whether to discharge the lead water based on the lead water level. Based on this, the method for controlling the lead water discharge includes: At each moment, according to the deviation of the lead water level from the preset maximum level, combined with the slope of the lead water level change curve and the change information of the lead water temperature within the target analysis period, the solidification probability of the lead water in the lead water collection tank is obtained; At each moment, the sedimentation coefficient and the solidification probability are fused, and the negative correlation normalization result of the fusion result is used as the collection effect parameter of the lead water collection tank; At each moment, according to the collection effect parameter and the lead water level, the discharge condition is determined, and when the discharge condition is met, the lead water discharge is controlled.

[0042] As an example, specifically, the sedimentation coefficient and the solidification probability are multiplied and combined. After adding the preset minimum positive parameter 0.001 to the product, the reciprocal operation is performed for negative correlation normalization and logic adjustment, so that the larger the sedimentation coefficient and the solidification probability, the smaller the collection effect parameter; in other examples, the product can also be used as x in the exponential function exp(-x) with the natural constant e as the base for negative correlation mapping.

[0043] Among them, in a preferred embodiment of the present invention, the method for obtaining the solidification probability includes: At each moment, the difference between the preset maximum level and the lead water level is used as the numerator, the slope of the lead water level change curve within the corresponding target analysis period is used as the denominator, and the fractional ratio is used as the remaining amount parameter in the lead water collection tank; The deviation of the molten lead temperature at each moment from the maximum molten lead temperature within the target analysis period is used as the cooling parameter of the molten lead in the molten lead collection tank at each moment; The margin parameter and the cooling parameter are fused, and the normalized value of the fusion result is used as the solidification probability of the molten lead in the molten lead collection tank at the corresponding moment.

[0044] As an example, specifically, the margin parameter and the cooling parameter are multiplied and combined, and the product is linearly normalized to obtain the solidification probability at the corresponding moment; in other examples, the implementer can also use basic mathematical operations such as addition or weighted summation to combine the two.

[0045] It should be noted that the preset maximum liquid level is the height of the molten lead collection tank, and the implementer can also set other lead liquid level thresholds at adjacent heights as the preset maximum liquid level by himself; the slope of the lead liquid level change curve within the target analysis period cannot be 0 or negative, so the margin parameter is always a positive number. The margin parameter can be regarded as the ratio of the liquid level difference to the liquid level change rate, that is, it can be regarded as the remaining collection time corresponding to when the molten lead collection tank is full; the cooling parameter is always non-negative.

[0046] Among them, in a preferred embodiment of the present invention, the discharge condition is that the lead liquid level is equal to the preset maximum liquid level or the collection effect parameter is less than the preset effect threshold; the preset effect threshold is set to 0.5, and the implementer can also customize it; when any one of the two is satisfied, it is determined that the discharge condition is met, and the lead discharge module controls the lead discharge hole to open and starts to discharge lead.

[0047] It should be noted that controlling the opening and closing of the lead discharge hole is already a well-known prior art to those skilled in the art and will not be described in detail; when preparing for discharge, the filtration module needs to control the filter screen or warn relevant personnel to reduce the reaction rate by adjusting the relevant parameters of the smelting furnace so that the molten lead no longer falls into the molten lead collection tank until the molten lead continues to seep and filter into the molten lead collection tank after cleaning, which is already the prior art and will not be described in detail.

[0048] Cleaning module 104: used to adjust the cleaning intensity of the sediment in the molten lead collection tank according to the change in the amount of molten lead before and after discharge and all the bottom pressures of the tank, in combination with the deposition coefficient during discharge.

[0049] After each discharge of molten lead, the solidification and deposition situation in the molten lead collection tank can be evaluated, and then cleaned to continue collecting molten lead subsequently.

[0050] Considering that during the discharge process, if there is a certain difference between the amount of lead water in the lead water collection tank and the amount of lead water collected during discharge, it indicates that the lead water may solidify, deposit, or adhere to the inner wall of the lead water collection tank. At the same time, if the deposition coefficient evaluated at the beginning of the discharge is larger, it further indicates that the deposition degree in the lead water collection tank is greater, and thus the cleaning intensity is also greater. Also considering that if the difference in the bottom pressure of the lead water collection tank at all measurement points is greater, it indicates that there may be different degrees of deposition and adhesion at different measurement points. Based on this, in the embodiments of the present invention, after each discharge of lead water, the cleaning intensity of the sediment in the lead water collection tank can be adjusted according to the change in the amount of lead water before and after the discharge, all the bottom pressures, and the deposition coefficient during the discharge.

[0051] Preferably, in an embodiment of the present invention, the method for adjusting the cleaning intensity of the sediment in the lead water collection tank includes: After each discharge of lead water, obtain the solidified retention amount of lead water in the lead water collection tank according to the difference in the amount of lead water collected before and after the discharge, and obtain the cleaning difficulty coefficient of the solidified retention amount of lead water in the lead water collection tank according to the difference in the bottom pressure at different measurement points; According to the solidified retention amount of lead water, the cleaning difficulty coefficient, and the deposition coefficient, adjust the minimum cleaning intensity of the cleaning module to obtain the adjusted cleaning intensity.

[0052] Among them, in a preferred embodiment of the present invention, the method for obtaining the adjusted cleaning intensity includes: Fuse the solidified retention amount of lead water, the cleaning difficulty coefficient, and the deposition coefficient, use the normalized value of the fusion result plus a constant 1 as the strength adjustment weight value, weight the preset initial cleaning intensity with the strength adjustment weight value, and use the weighted result as the cleaning intensity.

[0053] As an example, first multiply the bottom area of the lead water collection tank by the lead water level at the time of preparation for discharge as the lead water collection amount of the lead water collection tank, that is, the expected lead discharge amount, and then use the difference between the expected lead discharge amount and the actual lead water collection amount during discharge as the solidified retention amount of lead water; at the first moment after the discharge, use the variance of the bottom pressure at different measurement points as the cleaning difficulty coefficient; further multiply the solidified retention amount of lead water, the cleaning difficulty coefficient, and the deposition coefficient, linearly normalize the product, use the normalized value plus a constant 1 as the strength adjustment weight value; when the three are larger, the strength adjustment weight value is larger, multiply the strength adjustment weight value by the preset initial cleaning intensity to obtain the cleaning intensity, that is, the jetting strength of the nozzle; the high-temperature gas flow spray gun remelts the solidified lead or other impurities through the high-temperature gas flow, and the melted metal liquid can also flow out from the lead discharge hole for collection.

[0054] It should be noted that the preset initial cleaning intensity is the minimum jetting intensity of the nozzle in the cleaning module, which needs to be determined according to the design parameters of the high-temperature gas flow spray gun; when the cleaning intensity is greater than the maximum jetting intensity, the cleaning module will carry out the cleaning work with the maximum jetting intensity.

[0055] Based on the same inventive concept, the present invention also proposes a method for controlling the collection of lead water in the smelting of metallic lead. This method can obtain the cleaning intensity of the sediment in the lead water collection tank of a lead water collection device for the smelting of metallic lead, and clean the sediment in the lead water collection tank according to the cleaning intensity of the sediment in the lead water collection tank.

[0056] In summary, the present invention monitors the change trends of the lead water level and the lead water purity in the lead water collection tank, combines the historical lead discharge rate, and adjusts the filtration accuracy of the lead water; then, according to the change correlation between the lead water level and the molten iron level, obtains the deposition coefficient in the lead water collection tank, and further combines the historical changes of the lead water level and the lead water temperature to control the lead water discharge; then, after the lead water is discharged, according to the change in the lead water volume before and after the discharge and all the bottom pressures of the tanks, combines the deposition coefficient during the discharge, and adjusts the cleaning intensity of the sediment in the lead water collection tank. The present invention performs a certain filtration during the collection of lead water, reduces the degree of impurity blockage of the lead discharge holes and improves the purity of the lead water, accurately judges the possibility of sediment blockage and the possibility of lead water overflow in the lead water collection tank, determines the discharge timing and controls the cleaning after the discharge, thereby improving the output effect of the lead water.

[0057] It should be noted that the above-mentioned sequence of the embodiments of the present invention is only for description and does not represent the superiority or inferiority of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0058] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key points of each embodiment are the differences from other embodiments.

Claims

1. A lead water collecting device for metal lead smelting, the lead water collecting device is suitable for a smelting device, the smelting device comprises a molten iron collecting tank and a lead water collecting tank, characterized in that: The lead water collection device comprises: Acquisition module: used to obtain the lead liquid level, lead liquid temperature, lead liquid purity, tank bottom pressure at different measuring points and molten iron liquid level in the molten iron collection tank in the smelting device body at each moment; Filter module: used to adjust the filtration accuracy of lead water at each moment according to the historical change trend of lead water level and lead water purity, combined with the change rate of lead water level during historical lead water discharge; Lead discharge module: used to obtain the sedimentation coefficient in the lead water collection tank at each moment according to the historical change correlation between the lead water level and the molten iron level; at each moment, according to the historical changes of the lead water level and the lead water temperature, combined with the sedimentation coefficient, control the lead water discharge; Cleaning module: used to adjust the cleaning intensity of the sediment in the lead water collection tank after each lead water discharge, according to the change in the amount of lead water before and after discharge and all the tank bottom pressures, combined with the sedimentation coefficient during discharge.

2. A lead water collecting device for metal lead smelting according to claim 1, characterized in that: The acquisition module is also used to, at each moment, take the historical period from each moment to the last complete discharge and cleaning as the target analysis period, fit the lead water level change curve and the lead water purity change curve within the target analysis period; and fit the lead water level drop curve in the lead water collection tank during each historical lead water discharge process.

3. A lead water collecting device for metal lead smelting according to claim 2, characterized in that: The method for adjusting the filtering accuracy of lead water comprises: The negative correlation mapping result of the slope of the lead water purity change curve at each moment is used as the first required accuracy; the reciprocal of the absolute value mean of the slope of each lead water level drop curve is used as the second required accuracy; the slope of the lead water level change curve at each moment is used as the third required accuracy; At each moment, the first requirement accuracy, the second requirement accuracy and the third requirement accuracy are fused, the normalized value of the fusion result is used as the filtering parameter, the filtering parameter is used as the adjustment weight, the maximum filtering accuracy of the filtering module is weighted using the adjustment weight, and the weighted result is used as the filtering accuracy.

4. The lead water collecting device for metal lead smelting according to claim 1, characterized in that: The method for obtaining the deposition coefficient includes: The normalized value of the difference between the molten iron level at each moment and the previous adjacent moment is used as the molten iron change parameter; the normalized value of the difference between the molten lead level at each moment and the previous adjacent moment is used as the molten lead change parameter; The difference between the molten iron variation parameter and the molten lead variation parameter is used as the sedimentation coefficient in the molten lead collecting tank at each moment.

5. The lead water collecting device for metal lead smelting according to claim 2, characterized in that: The method for controlling lead water discharge comprises: At each moment, according to the deviation of the lead water level from the preset maximum liquid level, combined with the slope of the lead water level change curve and the change information of the lead water temperature during the target analysis period, the solidification probability of the lead water in the lead water collection tank is obtained; At each moment, the deposition coefficient and the solidification probability are fused, and the negative correlation normalized result of the fusion result is used as the collection effect parameter of the lead water collection tank; At each moment, the discharge condition is determined according to the collection effect parameter and the lead water level, and the lead water discharge is controlled when the discharge condition is met.

6. The lead water collecting device for metal lead smelting according to claim 5, characterized in that: The method for obtaining the solidification probability includes: At each moment, the difference between the preset maximum liquid level and the lead water level is used as the numerator, the slope of the lead water level change curve in the corresponding target analysis period is used as the denominator, and the fractional ratio is used as the residual parameter in the lead water collection tank; The deviation of the lead water temperature at each moment relative to the maximum lead water temperature in the target analysis period is used as a cooling parameter of the lead water in the lead water collecting tank at each moment; The residual parameter and the cooling parameter are integrated, and the normalized value of the integrated result is used as the solidification probability of the lead water in the lead water collecting tank at the corresponding moment.

7. A lead water collecting device for metal lead smelting according to claim 6, characterized in that: The discharge condition is that the lead water level is equal to a preset maximum level or the collection effect parameter is less than a preset effect threshold.

8. The lead water collecting device for metal lead smelting according to claim 1, characterized in that: The method for adjusting the cleaning strength of the sediment in the lead water collection tank comprises: After each discharge of lead water, the lead water solidification retention amount in the lead water collection tank is obtained according to the difference in the lead water collection amount before and after the discharge, and the cleaning difficulty coefficient of the lead water solidification retention amount in the lead water collection tank is obtained according to the difference in the tank bottom pressure at different measuring points; According to the lead water solidification retention amount, the cleaning difficulty coefficient and the sedimentation coefficient, the minimum cleaning force of the cleaning module is adjusted to obtain the adjusted cleaning force.

9. A lead water collecting device for metal lead smelting according to claim 8, characterized in that: The method for obtaining the adjusted cleaning intensity includes: The lead water solidification retention amount, the cleaning difficulty coefficient and the deposition coefficient are integrated, and the normalized value of the integrated result plus the constant 1 is used as the intensity adjustment weight. The preset initial cleaning intensity is weighted using the intensity adjustment weight, and the weighted result is used as the cleaning intensity.

10. A method for collecting and controlling lead water in metal lead smelting, characterized in that: include; Obtaining the cleaning strength of the sediment in the lead water collection tank of the lead water collection device for metal lead smelting according to any one of claims 1 to 9; The sediment in the lead-water collecting tank is cleaned according to the cleaning intensity of the sediment in the lead-water collecting tank.

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