A pellet grinding water addition control method, device, grinding feed water addition system and storage medium

Abstract

The present invention discloses a pellet grinding water addition control method, device, grinding feed water addition system and storage medium, comprising: calculating the mill water addition amount and pre-screen water addition amount based on the acquired pre-screened fresh feed wet ore amount, pre-screened fresh feed original moisture content, circulation load, overscreen yield, overscreen material feeding mill concentration, underflow return sand concentration, mill grinding concentration target value and pre-screened material self-carrying water ratio entering the mill; calculating the pump pool water addition amount based on the acquired pre-screened fresh feed wet ore amount, pre-screened fresh feed original moisture content, overflow concentration, mill water addition amount and pre-screen water addition amount; controlling the water addition of corresponding mills, pre-screens and pump pools based on the mill water addition amount, pre-screen water addition amount and pump pool water addition amount; the application comprehensively considers the entire grinding process to automatically calculate the mill water addition amount and pump pool water addition amount, has high calculation efficiency and accuracy, is conducive to more accurate control of grinding water addition, and is conducive to improving grinding efficiency and product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of steel smelting, and in particular to a method and device for controlling water addition in pellet grinding, a grinding feed water addition system, and a computer-readable storage medium. Background Art

[0002] During the pellet production process, iron ore raw materials, whether mined or purchased, do not meet the particle size and grade requirements for pellet production. Therefore, the iron ore raw materials must be ground to produce an iron concentrate that meets the pellet production requirements. Ore dressing operations primarily include grinding, magnetic separation, concentrate concentration, filtration and drying, and tailings treatment. Grinding is the process of crushing the crushed ore to a suitable particle size and feeding the crushed minerals to the separation process. During grinding, the ore is crushed, allowing the effective mineral components to be separated from the gangue, and different effective mineral components to be separated from each other. Grinding is a key process in providing raw materials for separation. Control over the grinding process directly affects whether the ground product achieves the appropriate particle size, thereby impacting the separation process and the quality of the beneficiation products.

[0003] Grinding concentration is one of the key parameters that influences grinding efficiency and product particle size. Appropriate grinding concentration can improve grinding efficiency. Grinding concentration refers to the percentage of solid material mass contained in the slurry. It not only affects mill production capacity, product quality, and power consumption, but also affects the overflow particle size of the classifier, thereby affecting the mineral processing effect. The grinding concentration in the mill during the grinding process is very important for the grinding efficiency of the mill. During the classification process, the grinding concentration has a direct impact on the classification particle size. The control of grinding concentration is mainly achieved by adjusting the concentration by controlling the amount of water added.

[0004] At present, the control method of ball mill grinding concentration mainly relies on workers' experience and judgment, and manually adjusts the feed rate and water supply. This control method has a relatively large accuracy error, which affects the grinding efficiency and product quality.

[0005] In view of this, how to improve the control accuracy of water addition in pellet grinding and improve grinding efficiency and product quality has become a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of the embodiments of the present invention is to provide a pellet grinding water addition control method, device, grinding feed water addition system and computer-readable storage medium, which have high computational efficiency and accuracy, facilitate more accurate control of grinding water addition, and improve grinding efficiency and product quality.

[0007] To solve the above technical problems, the embodiments of the present invention provide the following technical solutions:

[0008] In one aspect, the present invention provides a method for controlling water addition in pellet milling, which is applied to a mill feed water addition system. The mill feed water addition system includes a pre-screen, a mill, a pump tank, and a cyclone. The method includes:

[0009] Obtain the pre-screened wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the oversize yield, the oversize concentration entering the mill, the target grinding concentration of the mill, and the water content of the pre-screened material entering the mill;

[0010] Obtain the cyclone inlet concentration, overflow concentration, underflow return sand concentration and circulation load;

[0011] Calculate the mill water addition amount and the pre-screen water addition amount based on the wet ore amount of the pre-screened fresh feed, the original moisture content of the pre-screened fresh feed, the circulating load, the oversize yield, the oversize material concentration entering the mill, the underflow return sand concentration, the mill grinding concentration target value, and the water content of the pre-screened material entering the mill;

[0012] Calculating the pump pool water addition amount based on the wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the overflow concentration, the mill water addition amount and the pre-screened water addition amount;

[0013] Water addition control is performed on the corresponding mill, the pre-screen and the pump pool based on the water addition amount of the mill, the water addition amount of the pre-screen and the water addition amount of the pump pool.

[0014] In an exemplary embodiment, the mill water addition amount and the pre-screen water addition amount are calculated based on the wet ore amount of the pre-screened fresh feed, the original moisture content of the pre-screened fresh feed, the circulating load, the oversize yield, the oversize material feeding mill concentration, the underflow return sand concentration, the mill grinding concentration target value, and the water content of the pre-screened material entering the mill, including:

[0015] Calculating the dry ore content and moisture content of the pre-screened fresh feed based on the wet ore content of the pre-screened fresh feed and the original moisture content of the pre-screened fresh feed;

[0016] Calculate the amount of dry ore of new mill feed entering the mill from the pre-screen and the amount of water entering the mill from the pre-screen based on the pre-screened new feed dry ore amount, the oversize yield and the oversize concentration entering the mill;

[0017] Determining the amount of dry ore overflowing from the cyclone based on the amount of dry ore in the pre-screened fresh feed, and calculating the amount of dry ore returning from the cyclone and the moisture content of the returning sand from the cyclone based on the amount of dry ore overflowing from the cyclone, the circulating load, and the underflow return sand concentration;

[0018] Calculating the total dry ore yield of the mill based on the dry ore yield of the new feed to the mill and the dry ore yield of the cyclone return sand;

[0019] Calculating the amount of water added to the mill based on the total dry ore volume of the mill, the target grinding concentration of the mill, the amount of water pre-screened into the mill, and the moisture content of the sand returned from the cyclone;

[0020] The amount of water added in the pre-screen is calculated based on the amount of water entering the mill through the pre-screen, the amount of water added in the mill, the moisture content of the new feed through the pre-screen, and the proportion of water carried by the material entering the mill through the pre-screen.

[0021] In an exemplary embodiment, the calculation of the dry ore content of the cyclone return sand and the moisture content of the cyclone return sand based on the cyclone overflow dry ore content, the circulation load, and the underflow return sand concentration includes:

[0022] Calculating the product of the cyclone overflow dry ore volume and the circulation load to obtain the cyclone return sand dry ore volume;

[0023] The moisture content of the cyclone return sand is calculated based on the dry ore volume of the cyclone return sand and the underflow return sand concentration, in combination with the return sand moisture content calculation formula; wherein the return sand moisture content calculation formula is:

[0024] water_FS = WI FSD * (1 - DI FS ) / DI FS , where water_FS represents the water content of the cyclone return sand, WI FSD Indicates the amount of dry ore returned from the cyclone, DI FS Indicates the bottom flow return sand concentration.

[0025] In an exemplary embodiment, the calculation of the amount of dry ore of the new mill feed entering the mill from the pre-screen and the amount of water entering the mill from the pre-screen based on the dry ore amount of the new pre-screened feed, the oversize yield, and the oversize concentration entering the mill comprises:

[0026] Calculating the product of the pre-screened new feed dry ore amount and the oversize yield to obtain the mill new feed dry ore amount entering the mill from the pre-screen;

[0027] Based on the dry ore amount of the new feed to the mill and the concentration of the oversize entering the mill, combined with the calculation relationship of the amount of water pre-screened to the mill, the amount of water pre-screened into the mill is calculated; wherein, the calculation relationship of the amount of water pre-screened to the mill is:

[0028] water_SS2MJ = WI NMJD *(1 - SSND) / SSND, where water_SS2MJ represents the amount of water pre-screened into the mill, WI NMJD It indicates the amount of dry ore newly fed to the mill, and SSND indicates the concentration of the oversize material entering the mill.

[0029] In an exemplary embodiment, the calculation of the water addition amount of the mill based on the total dry ore amount of the mill, the target grinding concentration of the mill, the amount of water pre-screened into the mill, and the moisture content of the cyclone return sand includes:

[0030] The water addition amount of the mill is calculated based on the total dry ore amount of the mill, the target grinding concentration of the mill, the amount of water pre-screened into the mill, and the moisture content of the cyclone return sand, and in combination with a first calculation formula; wherein the first calculation formula is:

[0031] water_MJ = (WI MJD *(1 - DI MJ ) / DI MJ ) - water_SS2MJ - water_FS; water_MJ represents the amount of water added to the mill, WI MJD Indicates the total dry ore content of the mill, DI MJ It represents the target value of grinding concentration of the mill, water_SS2MJ represents the amount of water pre-screened into the mill, and water_FS represents the moisture content of the sand returned from the cyclone.

[0032] In an exemplary embodiment, the calculation of the amount of water added in the pre-screen based on the amount of water entering the mill through the pre-screen, the amount of water added in the mill, the moisture content of the pre-screened new feed, and the water content ratio of the material entering the mill through the pre-screen includes:

[0033] The amount of water added to the pre-screen is calculated based on the amount of water entering the mill through the pre-screen, the amount of water added to the mill, the moisture content of the newly pre-screened feed, and the proportion of water carried by the material entering the mill after the pre-screen, in combination with a second calculation formula; wherein the second calculation formula is:

[0034] water_YXS = (water_SS2MJ + water_MJ * R_H2O - water_XGL * R_H2O) / R_H2O; where water_YXS represents the amount of water added in the pre-screen, water_SS2MJ represents the amount of water pre-screened into the mill, R_H2O represents the proportion of water carried by the pre-screened material entering the mill, and water_XGL represents the moisture content of the pre-screened new feed.

[0035] In an exemplary embodiment, the pump pool water addition amount is calculated based on the wet ore amount of the pre-screened fresh feed, the original moisture content of the pre-screened fresh feed, the overflow concentration, the mill water addition amount, and the pre-screened water addition amount, including:

[0036] Calculating the dry ore amount of the pre-screened fresh feed based on the wet ore amount of the pre-screened fresh feed and the original moisture content of the pre-screened fresh feed;

[0037] The dry ore amount of the pre-screened new feed is used as the dry ore amount of the cyclone overflow;

[0038] Calculating the cyclone overflow water volume based on the cyclone overflow dry ore volume and overflow concentration;

[0039] The overflow water volume is taken as the total water addition volume;

[0040] The pump sump water addition amount is calculated based on the total water addition amount, the moisture content of the pre-screened fresh feed, the pre-screened water addition amount and the mill water addition amount.

[0041] Another aspect of the present invention provides a pellet mill water addition control device, which is applied to a grinding feed water addition system. The grinding feed water addition system includes a pre-screen, a mill, a pump tank, and a cyclone. The method includes:

[0042] The first acquisition module is used to obtain the pre-screened wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the oversize yield, the oversize concentration entering the mill, the mill grinding concentration target value, and the water content of the pre-screened material entering the mill;

[0043] The second acquisition module is used to obtain the inlet concentration, overflow concentration, underflow return sand concentration and circulation load of the cyclone;

[0044] a first calculation module, configured to calculate the mill water addition amount and the pre-screen water addition amount based on the wet ore amount of the pre-screened fresh feed, the original moisture content of the pre-screened fresh feed, the circulating load, the oversize yield, the oversize material feeding mill concentration, the underflow return sand concentration, the mill grinding concentration target value, and the water content of the pre-screened material entering the mill;

[0045] a second calculation module, configured to calculate a pump pool water addition amount based on the pre-screened fresh feed wet ore amount, the pre-screened fresh feed original moisture content, the overflow concentration, the mill water addition amount, and the pre-screened water addition amount;

[0046] A control module is used to control the water addition of the corresponding mill, the pre-screen and the pump pool based on the water addition amount of the mill, the water addition amount of the pre-screen and the water addition amount of the pump pool.

[0047] Another aspect of the present invention provides a grinding feed water addition system, comprising a pre-screen, a grinding mill, a pump tank, a cyclone, a storage device and a processor, wherein:

[0048] The memory is used to store computer programs;

[0049] The processor is used to implement the steps of the pellet grinding water addition control method as described above when executing the computer program.

[0050] Another aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the pellet grinding water addition control method as described above are implemented.

[0051] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0052] The embodiment of the present invention provides a pellet grinding water addition control method, which is applied to the grinding feed water addition system. The grinding feed water addition system includes a pre-screen, a mill, a pump pool, and a cyclone. The method includes: obtaining the pre-screened new feed wet ore amount, the pre-screened new feed original moisture content, the screen yield, the screen oversize concentration entering the mill, the mill grinding concentration target value, and the pre-screened material self-contained water ratio value entering the mill; obtaining the inlet concentration, overflow concentration, underflow return sand concentration, and circulation load of the cyclone; based on the pre-screened new feed wet ore amount, the pre-screened new feed original moisture content, the screen oversize yield, the screen oversize concentration entering the mill, the mill grinding concentration target value, and the pre-screened material self-contained water ratio value entering the mill; obtaining the inlet concentration, overflow concentration, underflow return sand concentration, and circulation load of the cyclone; based on the pre-screened new feed wet ore amount, the pre-screened new feed original moisture content ... The water addition amount of the mill and the pre-screen is calculated based on the original moisture content of the pre-screened fresh feed, the circulation load, the oversize yield, the oversize material concentration entering the mill, the underflow return sand concentration, the target value of the mill grinding concentration and the proportion of water carried by the pre-screened material entering the mill; the water addition amount of the pump pool is calculated based on the wet ore amount of the pre-screened fresh feed, the original moisture content of the pre-screened fresh feed, the overflow concentration, the water addition amount of the mill and the water addition amount of the pre-screen; the water addition of the corresponding mill, pre-screen and pump pool is controlled based on the water addition amount of the mill, the water addition amount of the pre-screen and the water addition amount of the pump pool.

[0053] It can be seen that in the embodiment of the present invention, by obtaining the parameter information of the pre-screened new feed wet ore amount, the pre-screened new feed original moisture content, the screen yield, the screen feed concentration of the screen feed, the mill grinding concentration target value, the water content ratio of the pre-screened material entering the mill, and the inlet concentration of the cyclone, the overflow concentration, the underflow return sand concentration, and the circulation load, the pre-screened new feed wet ore amount, the pre-screened new feed original moisture content, the circulation load, the screen yield, the screen feed concentration of the screen feed, the underflow return sand concentration, the mill grinding concentration target value, and the pre-screened material entering the mill, the cyclone inlet concentration, the overflow concentration, the underflow return sand concentration, and the circulation load ... cyclone inlet concentration, the overflow concentration, the underflow return sand concentration, the circulation load, the pre-screened new feed wet ore amount, the pre-screened new feed original moisture content, the circulation load, the screen yield, the screen feed concentration, the underflow return sand concentration, the mill grinding concentration target value, and the pre-screened material entering the mill The water content of the material brought by the mill is used to further calculate the water content of the mill and the water content of the pre-screen; then, according to the wet ore content of the pre-screened new feed, the original moisture content of the pre-screened new feed, the overflow concentration, the water content of the mill and the water content of the pre-screen, the water content of the pump pool is further calculated, and then the water content of the corresponding mill, pre-screen and pump pool is controlled according to each water content; the application comprehensively considers the entire grinding process to automatically calculate the water content of the mill and the water content of the pump pool, with high calculation efficiency and accuracy, which is conducive to more accurate control of the water content of the grinding, and is beneficial to improving the grinding efficiency and product quality.

[0054] In addition, the present invention also provides a corresponding implementation device, a grinding feed water addition system and a computer-readable storage medium for the pellet grinding water addition control method, further making the method more practical, and the device, electronic device and computer-readable storage medium have corresponding advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the prior art and the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0056] Figure 1 A schematic structural diagram of a grinding feed water addition system provided in an embodiment of the present invention;

[0057] Figure 2 A schematic flow chart of a method for controlling water addition in pellet grinding provided by an embodiment of the present invention;

[0058] Figure 3 This is a structural block diagram of a pellet grinding water addition control device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0059] The embodiments of the present invention provide a pellet grinding water addition control method, device, grinding feed water addition system and computer-readable storage medium, which have high computational efficiency and accuracy, facilitate more accurate control of grinding water addition, and improve grinding efficiency and product quality.

[0060] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0061] Please note that, please refer to Figure 1 The grinding feed watering system shown in the figure is designed to pre-screen the water and raw material. Material that meets the required particle size is directly fed to the pump sump as undersize material, while material that does not meet the required particle size is fed to the mill for grinding. Water is added to the raw material once it reaches the pre-screen. The pre-screened material and water are divided into two parts: one enters the mill and the other enters the pump sump. The purpose of providing a pre-screen in this embodiment of the present invention is to improve grinding efficiency. New feed material that meets the required particle size (passes the screen) is directly fed to the pump sump and cyclone for classification, without going through the grinding process. This saves energy and reduces costs.

[0062] In addition, the mill feed at the head of the mill includes two parts. One part is the pre-screened material on the screen. The other part is the bottom flow return sand after cyclone classification. These two parts constitute the overall feed amount of the mill. By adding water to the mill, a certain grinding concentration is formed inside the mill, and the material is ground. After grinding, it is discharged from the tail of the mill to the pump pool. The pump pool controls the slurry concentration by adding water, and the slurry is pumped into the grading cyclone through the slurry pump. The cyclone inlet concentration is very important and is an important indicator that affects the grading effect. After entering the cyclone, it is classified, and the overflow that meets the standards enters the next process link, and the unqualified ones return to the mill through the bottom flow for re-grinding. With respect to the grinding feed water addition system, the embodiment of the present invention proposes a pellet grinding water addition control method, please refer to Figure 2 , Figure 2 A schematic flow chart of a method for controlling water addition in pellet grinding provided by an embodiment of the present invention.

[0063] The pellet grinding water addition control method is applied to the grinding feed water addition system, which includes a pre-screen, a grinding mill, a pump tank, and a cyclone. The method includes:

[0064] S110: obtaining the pre-screened wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the oversize yield, the oversize concentration entering the mill, the target grinding concentration of the mill, and the water content of the pre-screened material entering the mill;

[0065] It should be noted that in actual application, the wet ore volume WI of the current pre-screen can be determined based on the new feed actually fed to the pre-screen. N The original moisture content MI of the pre-screened new feed corresponding to the raw material can be determined in advance through experiments based on the properties of different raw materials. N , that is, in practical applications, the original moisture content MI corresponding to different types of raw materials can be determined in advance N , and establish the corresponding relationship between the raw material type and the original moisture content. When calculating the amount of water to be added, the original moisture content corresponding to the raw material can be determined from the corresponding relationship between the raw material type and the original moisture content according to the type of raw material pre-screened, thereby obtaining the original moisture content MI of the pre-screened new feed. N In addition, the oversize yield SSCL of the pre-screen for different types of raw materials can be determined in advance for the pre-screen, where the oversize yield represents the percentage of materials larger than a certain sieve hole in the total raw material. Then, a corresponding relationship between the different types of raw materials in the pre-screen and the corresponding oversize yield is established, so that the oversize yield SSCL of the pre-screen undersize corresponding to the type of raw material can be determined from the corresponding relationship according to the type of raw material.

[0066] In addition, the grinding concentration target value DI MJ The ratio of water in the pre-screened material entering the mill, R_H2O, can be determined in advance through experiments. This ratio refers to the ratio of water in the pre-screened new feed that enters the mill. This ratio can also be determined in advance through experiments. The concentration of the screened material entering the mill, SSND, refers to the concentration of the pre-screened material after being washed with water on the pre-screen (ore-water ratio), which can also be determined in advance through experiments. Specifically, the mill grinding concentration target value DI determined in advance through experiments can be used. MJ Parameters such as the water content ratio R_H2O of the pre-screened material entering the mill are pre-stored in the memory. During the grinding water addition control process, the required parameters can be directly obtained from the memory.

[0067] S120: Obtaining the inlet concentration, overflow concentration, underflow return sand concentration, and circulation load of the cyclone;

[0068] It should be noted that for the cyclone, the inlet concentration DI of the cyclone can be determined in advance. RK , overflow concentration DI YL , bottom flow return sand concentration DI FSParameters such as the circulating load C are stored in memory, allowing direct access to required parameters when calculating and controlling water addition. The circulating load (also known as the return sand ratio) C refers to the ratio of the mass of coarse material (return sand) returned from the classifier (also known as the cyclone) to the original feed mass in closed-circuit grinding. It is a key indicator of grinding energy consumption and efficiency. The specific value of the return sand ratio can be calculated manually by manually obtaining the flow rate.

[0069] Of course, in actual application, during each control process, it is possible to first determine whether the type of raw material has changed. If there is no change, the parameters such as the circulating load, oversize yield, oversize material entering the mill and the original moisture content of the pre-screened new feed corresponding to the type of raw material obtained last time can be directly used. If the type of raw material has changed, the corresponding circulating load, oversize yield, oversize material entering the mill and the original moisture content of the pre-screened new feed can be re-obtained according to the new type of raw material.

[0070] S130: Calculate the mill water addition amount and pre-screen water addition amount based on the pre-screened fresh feed wet ore amount, the pre-screened fresh feed original moisture content, the circulating load, the oversize yield, the oversize material concentration entering the mill, the underflow return sand concentration, the mill grinding concentration target value, and the water content of the pre-screened material entering the mill;

[0071] It is understandable that, in the embodiment of the present invention, after obtaining the above parameters, the wet ore volume WI of the pre-screened new feed can be further calculated. N , Pre-screen the original moisture content of the new feed MI N , circulating load C, oversize yield SSCL, oversize concentration SSND, underflow sand concentration DI FS , Grinding concentration target value DI MJ The water addition amount water_MJ and the pre-screened water addition amount water_YXS are calculated based on the water content of the pre-screened material entering the mill, R_H2O. The calculation process of S130 is as follows:

[0072] A: Based on the pre-screened new feed wet ore volume WI N and the original moisture content of the pre-screened new feed MI N , calculate the pre-screened new feed dry ore volume WI ND and pre-screened new feed moisture content water_XGL;

[0073] Specifically, the amount of wet ore in the pre-screened new feed WI N and the original moisture content of the pre-screened new feed MI N , combined with the relation WI ND = WI N * (1 - MIN ), calculate the pre-screened new feed dry ore amount WI ND .

[0074] Further according to the pre-screened new feed wet ore volume WI N and the original moisture content of the pre-screened new feed MI N , combined with the relation water_XGL = WI N * MI N , calculate and obtain the moisture content of the pre-screened new feed water_XGL.

[0075] B: Based on the dry ore content of the pre-screened new feed WI ND , oversize yield SSCL and oversize concentration SSND, calculate the dry ore volume of new feed WI entering the mill from the pre-screen NMJD and the amount of water pre-screened into the mill water_SS2MJ;

[0076] Specifically, by calculating the pre-screened new feed dry ore volume WI ND The product of the screen yield SSCL can be used to obtain the dry ore volume of the new feed entering the mill from the pre-screen WI. NMJD That is, WI NMJD = WI ND *SSCL.

[0077] Furthermore, according to the dry ore amount WI of the new feed to the mill NMJD The amount of water pre-screened into the mill, water_SS2MJ, is calculated based on the concentration of the oversize entering the mill SSND and the water pre-screened into the mill. The water pre-screened into the mill, water_SS2MJ, is calculated based on the water pre-screened into the mill SSND.

[0078] water_SS2MJ = WI NMJD * (1 - SSND) / SSND, where water_SS2MJ represents the amount of water pre-screened into the mill, WI NMJD It indicates the amount of dry ore newly fed to the mill, and SSND indicates the concentration of the oversize material entering the mill.

[0079] C: Based on the dry ore content of the pre-screened new feed WI ND Determine the amount of dry ore overflowing from the cyclone WI YLD , and based on the cyclone overflow dry ore volume WI YLD , circulating load C and bottom flow return sand concentration DI FS , calculate the dry ore volume WI returned by the flow device FSD and the water content of the cyclone return sand water_FS;

[0080] Specifically, according to the balance principle, the pre-screen, mill, pump pool and cyclone are the main circulation bodies, so that the minerals and water reach a balance state in this circulation body. ND Equal to the cyclone overflow dry ore volume WI YLD , that is WI ND =WI YLD During the circulation process, the total amount of water added water_All is equal to the overflow water volume water_YL, that is, water_All = water_YL.

[0081] In practical applications, the cyclone overflow dry ore volume WI can be calculated YLD The product of the circulating load C is the cyclone return sand dry ore volume WI FSD That is, WI FSD = WI YLD * C, where WI ND =WI YLD .

[0082] Furthermore, according to the cyclone return sand dry ore volume WI FSD and bottom flow return sand concentration DI FS , combined with the calculation formula of the returned sand moisture content, calculate the cyclone return sand moisture content water_FS; Among them, the calculation formula of the returned sand moisture content is:

[0083] water_FS = WI FSD * (1 - DI FS ) / DI FS , where water_FS represents the water content of the cyclone return sand, WI FSD Indicates the amount of dry ore returned from the cyclone, DI FS Indicates the bottom flow return sand concentration.

[0084] D: Based on the dry ore content of the new feed to the mill WI NMJD And the cyclone return sand dry ore volume WI FSD , calculate the total dry ore volume WI of the mill MJD ;

[0085] Specifically, after obtaining the dry ore amount of new feed to the mill WI NMJD And the cyclone return sand dry ore volume WI FSD After that, the two can be summed to get the total dry ore volume WI of the mill. MJD That is, WI MJD = WI NMJD + WI FSD .

[0086] E: Based on the total dry ore volume WI of the mill MJD, Grinding concentration target value DI MJ 2. Calculate the water added to the mill water_MJ based on the amount of water pre-screened into the mill water_SS2MJ and the water content of the sand returned from the cyclone water_FS;

[0087] Specifically, the total dry ore volume WI of the mill can be MJD , Grinding concentration target value DI MJ , the amount of water pre-screened into the mill water_SS2MJ and the water content of the cyclone return sand water_FS, and combined with the first calculation formula, calculate the amount of water added to the mill water_MJ; wherein the first calculation formula is:

[0088] water_MJ = (WI MJD *(1 - DI MJ ) / DI MJ ) - water_SS2MJ - water_FS; water_MJ represents the amount of water added to the mill, WI MJD Indicates the total dry ore content of the mill, DI MJ It indicates the target value of grinding concentration of the mill, water_SS2MJ indicates the amount of water pre-screened into the mill, and water_FS indicates the moisture content of the sand returned from the cyclone.

[0089] In practical applications, we can pre-determine the relationship between MJ = WI MJD / (water_MJ + water_SS2MJ +water_FS), determine the first calculation relationship: water_MJ = (WI MJD *(1 - DI MJ ) / DI MJ ) - water_SS2MJ - water_FS.

[0090] F: Calculate the pre-screened water addition amount water_YXS based on the pre-screened water entering the mill water_SS2MJ, the mill water addition amount water_MJ, the pre-screened new feed moisture content water_XGL, and the pre-screened material entering the mill with its own water content R_H2O.

[0091] Specifically, the amount of water added in the pre-screening, water_YXS, can be calculated based on the amount of water entering the mill in the pre-screening, water_SS2MJ, the amount of water added to the mill, water_MJ, the moisture content of the pre-screened new feed, water_XGL, and the ratio of water carried by the pre-screened material entering the mill, R_H2O, in combination with the second calculation formula. The second calculation formula is:

[0092] water_YXS = (water_SS2MJ + water_MJ * R_H2O - water_XGL * R_H2O) / R_H2O; where water_YXS represents the amount of water added in pre-screening, water_SS2MJ represents the amount of water pre-screened and entering the mill, water_MJ represents the amount of water added in the mill, R_H2O represents the proportion of water carried by the pre-screened material entering the mill, and water_XGL represents the moisture content of the newly pre-screened feed.

[0093] In practical applications, the second calculation formula can be determined in advance based on the formula R_H2O=water_SS2MJ / (water_XGL+water_YXS+water_MJ): water_YXS=(water_SS2MJ+water_MJ*R_H2O-water_XGL*R_H2O) / R_H2O.

[0094] S140: Calculate the pump pool water amount based on the pre-screened fresh feed wet ore amount, the pre-screened fresh feed original moisture content, the overflow concentration, the mill water amount, and the pre-screened water amount;

[0095] The specific calculation process of this step can be implemented by referring to the following process:

[0096] G: Based on the pre-screened new feed wet ore volume WI N and the original moisture content of the pre-screened new feed MI N , calculate the pre-screened new feed dry ore volume WI ND ;

[0097] According to the pre-screened new feed wet ore volume WI N and the original moisture content of the pre-screened new feed MI N , combined with the corresponding relationship WI ND = WI N * (1 - MI N ), calculate the pre-screened new feed dry ore amount WI ND Of course, since the above S130 has calculated the pre-screened new feed dry ore amount WI ND Therefore, in S140, it is not necessary to calculate again and directly use the pre-screened new feed dry ore amount WI ND Just do the subsequent calculations.

[0098] H: The amount of dry ore in the pre-screened new feed WI ND As the cyclone overflow dry ore volume WI YLD ;

[0099] That is, according to the balance principle, with the pre-screen, mill, pump pool and cyclone as the main circulation body, the mineral and water reach a balance state in this circulation body. ND Equal to the cyclone overflow dry ore volume WI YLD , that is WI ND =WI YLD During the circulation process, the total amount of water added water_All is equal to the overflow water volume water_YL, that is, water_All = water_YL.

[0100] I: Based on the cyclone overflow dry ore volume WI YLD and overflow concentration DI YL , calculate the cyclone overflow water volume water_YL;

[0101] Specifically, due to DI YL = WI YLD / (WI YLD + water_YL), can be further calculated based on the cyclone overflow dry ore volume WI YLD and overflow concentration DI YL , combined with the corresponding relationship water_YL = WI YLD * (1 - DI YL ) / DI YL , calculate the cyclone overflow water volume water_YL.

[0102] J: The overflow water volume water_YL is used as the total water added volume water_All, that is, water_All = water_YL;

[0103] K: Calculate the pump pool water addition water_BC based on the total water addition water_All, the pre-screened new feed moisture content water_XGL, the pre-screened water addition water_YXS and the mill water addition water_MJ.

[0104] Specifically, according to the total water addition water_All, the pre-screened new feed moisture content water_XGL, the pre-screened water addition water_YXS and the mill water addition water_MJ, combined with the third relationship water_BC = water_All - water_XGL- water_YXS - water_MJ, the pump pool water addition water_BC can be obtained.

[0105] S150: Controlling water addition to the corresponding mill, pre-screen, and pump pool based on the water addition amount of the mill, the water addition amount of the pre-screen, and the water addition amount of the pump pool.

[0106] It should be noted that after obtaining the water addition amount of the mill, the water addition amount of the pre-screen and the water addition amount of the pump pool through the above calculation, the water addition to the mill can be controlled according to the water addition amount of the mill, the water addition to the pre-screen can be controlled according to the water addition amount of the pre-screen, and the water addition to the pump pool can be controlled according to the water addition amount of the pump pool, so that the water addition control of the grinding process can be carried out efficiently and accurately.

[0107] In addition, it should be noted that in order to improve the control accuracy, the collected data used in the embodiments of the present invention all adopt minute average values, and then set the control model adjustment period T, which can be 5 minutes or 10 minutes. The specific value can be determined according to actual needs. For example, if T is 10 minutes, then the data used in the implementation method are all average values ​​within 10 minutes, thereby reducing the impact of data fluctuations on the control. In this method, when the type of raw material changes, the corresponding circulating load needs to be re-acquired in the grinding and grading balance, otherwise it remains unchanged. By pre-screening and adding water in the entire process, adding water inside the mill to control the grinding concentration of the mill, and adding water to the pump pool under the mill to control the grading inlet concentration, the grinding and grading efficiency and product quality are guaranteed.

[0108] It can be seen that in the embodiment of the present invention, by obtaining the parameter information of the pre-screened new feed wet ore amount, the pre-screened new feed original moisture content, the screen yield, the screen feed concentration of the screen feed, the mill grinding concentration target value, the water content ratio of the pre-screened material entering the mill, and the inlet concentration of the cyclone, the overflow concentration, the underflow return sand concentration, and the circulation load, the pre-screened new feed wet ore amount, the pre-screened new feed original moisture content, the circulation load, the screen yield, the screen feed concentration of the screen feed, the underflow return sand concentration, the mill grinding concentration target value, and the pre-screened material entering the mill, the cyclone inlet concentration, the overflow concentration, the underflow return sand concentration, and the circulation load ... cyclone inlet concentration, the overflow concentration, the underflow return sand concentration, the circulation load, the pre-screened new feed wet ore amount, the pre-screened new feed original moisture content, the circulation load, the screen yield, the screen feed concentration, the underflow return sand concentration, the mill grinding concentration target value, and the pre-screened material entering the mill The water content of the material brought by the mill is used to further calculate the water content of the mill and the water content of the pre-screen; then, according to the wet ore content of the pre-screened new feed, the original moisture content of the pre-screened new feed, the overflow concentration, the water content of the mill and the water content of the pre-screen, the water content of the pump pool is further calculated, and then the water content of the corresponding mill, pre-screen and pump pool is controlled according to each water content; the application comprehensively considers the entire grinding process to automatically calculate the water content of the mill and the water content of the pump pool, with high calculation efficiency and accuracy, which is conducive to more accurate control of the water content of the grinding, and is beneficial to improving the grinding efficiency and product quality.

[0109] In other words, the present invention provides a method for controlling water addition for grinding and grading throughout the entire grinding process with pre-screening. This method controls mill concentration to improve grinding efficiency, and controls the amount of water added to the pump sump to maintain the required grading inlet concentration and, consequently, the required grading particle size, thereby improving grading efficiency. The amount of water added to the mill and pump sump is calculated based on the material and water balances in the grinding and grading balance to ensure grinding and grading concentrations, thereby optimizing grinding and grading efficiency.

[0110] The present invention also provides a corresponding device for the pellet milling water addition control method, which further makes the method more practical. Among them, the device can be described from the perspective of functional modules and hardware. The pellet milling water addition control device provided by the present invention is introduced below. The device is used to implement the pellet milling water addition control method provided by the present invention. In this embodiment, the pellet milling water addition control device may include or be divided into one or more program modules. The one or more program modules are stored in a storage medium and executed by one or more processors to complete the pellet milling water addition control method disclosed in the above embodiment. The program module referred to in the present invention refers to a series of computer program instruction segments that can complete specific functions, which is more suitable for describing the execution process of the pellet milling water addition control device in the storage medium than the program itself. The following description will specifically introduce the functions of each program module of this embodiment. The pellet milling water addition control device described below and the pellet milling water addition control method described above can be referenced to each other.

[0111] From the perspective of functional modules, see Figure 3 , Figure 3 This is a structural diagram of a pellet mill water addition control device provided by the present invention in a specific embodiment. The device may include: the device is applied to a grinding feed water addition system, the grinding feed water addition system includes a pre-screen, a mill, a pump tank, and a cyclone. The device includes:

[0112] The first acquisition module 11 is used to obtain the pre-screened wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the oversize yield, the oversize concentration entering the mill, the target grinding concentration of the mill, and the water content of the pre-screened material entering the mill;

[0113] The second acquisition module 12 is used to obtain the inlet concentration, overflow concentration, underflow return sand concentration and circulation load of the cyclone;

[0114] The first calculation module 13 is used to calculate the mill water addition amount and the pre-screen water addition amount based on the wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the circulating load, the oversize yield, the oversize concentration entering the mill, the underflow return sand concentration, the mill grinding concentration target value, and the water content of the pre-screened material entering the mill;

[0115] The second calculation module 14 is used to calculate the water addition amount of the pump pool based on the wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the overflow concentration, the water addition amount of the mill and the pre-screened water addition amount;

[0116] The control module 15 is used to control the water addition of the corresponding mill, pre-screen and pump pool based on the water addition amount of the mill, the water addition amount of the pre-screen and the water addition amount of the pump pool.

[0117] It should be noted that the pelletizing grinding water addition control device provided in the embodiment of the present invention has the same beneficial effects as the pelletizing grinding water addition control method provided in the above embodiment, and for the specific introduction of the pelletizing grinding water addition control method involved in the embodiment of the present invention, please refer to the above embodiment, and this application will not go into details here.

[0118] The pellet mill water control device mentioned above is described from the perspective of functional modules. Furthermore, the present invention also provides a grinding feed water system, which is described from the perspective of hardware. The grinding feed water system includes a pre-screen, a mill, a pump tank, a cyclone, a memory, and a processor, wherein:

[0119] memory for storing computer programs;

[0120] The processor is used to implement the steps of the pellet grinding water addition control method as described in the above embodiment when executing the computer program.

[0121] The electronic device provided in this embodiment may include but is not limited to a smart phone, a tablet computer, a laptop computer, or a desktop computer.

[0122] Among them, the processor may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor can be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 21 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 21 may also include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning.

[0123] The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the memory may be an internal storage unit of the electronic device, such as a server's hard drive. In other embodiments, the memory may be an external storage device of the electronic device, such as a plug-in hard drive equipped on a server, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. Furthermore, the memory may include both an internal storage unit and an external storage device of the electronic device. The memory can be used not only to store application software installed on the electronic device and various types of data, such as the code of programs used to execute the pellet mill water addition control method, but also to temporarily store data that has been output or is about to be output. In this embodiment, the memory is used to store at least the following computer program, which, when loaded and executed by the processor, can implement the relevant steps of the pellet mill water addition control method disclosed in any of the aforementioned embodiments. Furthermore, the resources stored in the memory may also include an operating system and data, and the storage method may be either temporary or permanent. The operating system may include Windows, Unix, Linux, etc. The data may include but is not limited to (data corresponding to pellet grinding water addition control results) and the like.

[0124] It is understandable that if the pellet grinding water addition control method in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and executes all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), electrically erasable programmable ROM, register, hard disk, removable disk, CD-ROM, magnetic disk or optical disk, and other media that can store program code.

[0125] Based on this, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the above-mentioned pellet grinding water addition control method are implemented.

[0126] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0127] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0128] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling water addition in pellet grinding, characterized in that: Applied to a grinding feed water adding system, the grinding feed water adding system includes a pre-screen, a grinding mill, a pump tank, and a cyclone, and the method includes: Obtain the pre-screened wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the oversize yield, the oversize concentration entering the mill, the target grinding concentration of the mill, and the water content of the pre-screened material entering the mill; Obtain the cyclone inlet concentration, overflow concentration, underflow return sand concentration and circulation load; Calculate the mill water addition amount and the pre-screen water addition amount based on the wet ore amount of the pre-screened fresh feed, the original moisture content of the pre-screened fresh feed, the circulating load, the oversize yield, the oversize material concentration entering the mill, the underflow return sand concentration, the mill grinding concentration target value, and the water content of the pre-screened material entering the mill; Calculating the pump pool water addition amount based on the wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the overflow concentration, the mill water addition amount and the pre-screened water addition amount; Water addition control is performed on the corresponding mill, the pre-screen and the pump pool based on the water addition amount of the mill, the water addition amount of the pre-screen and the water addition amount of the pump pool.

2. The pellet grinding water addition control method according to claim 1, characterized in that: The calculation of the mill water addition amount and the pre-screen water addition amount based on the wet ore amount of the pre-screened fresh feed, the original moisture content of the pre-screened fresh feed, the circulating load, the oversize yield, the oversize material feeding mill concentration, the underflow return sand concentration, the mill grinding concentration target value, and the water content of the pre-screened material entering the mill comprises: Calculating the dry ore content and moisture content of the pre-screened fresh feed based on the wet ore content of the pre-screened fresh feed and the original moisture content of the pre-screened fresh feed; Calculate the amount of dry ore of new mill feed entering the mill from the pre-screen and the amount of water entering the mill from the pre-screen based on the pre-screened new feed dry ore amount, the oversize yield and the oversize concentration entering the mill; Determining the amount of dry ore overflowing from the cyclone based on the amount of dry ore in the pre-screened fresh feed, and calculating the amount of dry ore returning from the cyclone and the moisture content of the returning sand based on the amount of dry ore overflowing from the cyclone, the circulating load, and the concentration of the underflow returning sand; Calculating the total dry ore yield of the mill based on the dry ore yield of the new feed to the mill and the dry ore yield of the cyclone return sand; Calculating the amount of water added to the mill based on the total dry ore volume of the mill, the target grinding concentration of the mill, the amount of water pre-screened into the mill, and the moisture content of the sand returned from the cyclone; The amount of water added in the pre-screen is calculated based on the amount of water entering the mill through the pre-screen, the amount of water added in the mill, the moisture content of the new feed through the pre-screen, and the proportion of water carried by the material entering the mill through the pre-screen.

3. The pellet grinding water addition control method according to claim 2, characterized in that: The calculating of the dry ore amount of the cyclone return sand and the water content of the cyclone return sand based on the cyclone overflow dry ore amount, the circulation load and the underflow return sand concentration includes: Calculating the product of the cyclone overflow dry ore volume and the circulation load to obtain the cyclone return sand dry ore volume; The moisture content of the cyclone return sand is calculated based on the dry ore volume of the cyclone return sand and the underflow return sand concentration, in combination with the return sand moisture content calculation formula; wherein the return sand moisture content calculation formula is: water_FS = WI FSD * (1 - DI FS ) / DI FS , where water_FS represents the water content of the cyclone return sand, WI FSD Indicates the amount of dry ore returned from the cyclone, DI FS Indicates the bottom flow return sand concentration.

4. The pellet grinding water addition control method according to claim 2, characterized in that: The method of calculating the amount of dry ore of the new mill feed entering the mill from the pre-screen and the amount of water entering the mill from the pre-screen based on the dry ore amount of the new pre-screened feed, the oversize yield, and the oversize concentration entering the mill comprises: Calculating the product of the pre-screened new feed dry ore amount and the oversize yield to obtain the mill new feed dry ore amount entering the mill from the pre-screen; Based on the dry ore amount of the new feed to the mill and the concentration of the oversize entering the mill, combined with the calculation relationship of the amount of water pre-screened to the mill, the amount of water pre-screened into the mill is calculated; wherein, the calculation relationship of the amount of water pre-screened to the mill is: water_SS2MJ = WI NMJD * (1 - SSND) / SSND, where water_SS2MJ represents the amount of water pre-screened into the mill, WI NMJD It indicates the amount of dry ore newly fed to the mill, and SSND indicates the concentration of the oversize material entering the mill.

5. The pellet grinding water addition control method according to claim 2, characterized in that: The calculation of the water addition amount of the mill based on the total dry ore amount of the mill, the target grinding concentration value of the mill, the amount of water pre-screened into the mill, and the moisture content of the sand returned from the cyclone includes: The water addition amount of the mill is calculated based on the total dry ore amount of the mill, the target grinding concentration of the mill, the amount of water pre-screened into the mill, and the moisture content of the cyclone return sand, and in combination with a first calculation formula; wherein the first calculation formula is: water_MJ = (WI MJD *(1 - DI MJ ) / DI MJ )- water_SS2MJ - water_FS; where water_MJ represents the amount of water added to the mill, WI MJD Indicates the total dry ore content of the mill, DI MJ It represents the target value of grinding concentration of the mill, water_SS2MJ represents the amount of water pre-screened into the mill, and water_FS represents the moisture content of the sand returned from the cyclone.

6. The pellet grinding water addition control method according to claim 5, characterized in that: The calculation of the amount of water added in the pre-screen based on the amount of water entering the mill through the pre-screen, the amount of water added in the mill, the moisture content of the newly pre-screened feed, and the water content ratio of the material entering the mill through the pre-screen includes: The amount of water added to the pre-screen is calculated based on the amount of water entering the mill through the pre-screen, the amount of water added to the mill, the moisture content of the newly pre-screened feed, and the proportion of water carried by the material entering the mill after the pre-screen, in combination with a second calculation formula; wherein the second calculation formula is: water_YXS = (water_SS2MJ + water_MJ * R_H2O - water_XGL * R_H2O) / R_H2O; where water_YXS represents the amount of water added in the pre-screen, water_SS2MJ represents the amount of water pre-screened into the mill, R_H2O represents the proportion of water carried by the pre-screened material entering the mill, and water_XGL represents the moisture content of the pre-screened new feed.

7. The pellet grinding water addition control method according to any one of claims 2 to 6, characterized in that: The pump pool water addition amount is calculated based on the wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the overflow concentration, the mill water addition amount and the pre-screened water addition amount, including: Calculating the dry ore amount of the pre-screened fresh feed based on the wet ore amount of the pre-screened fresh feed and the original moisture content of the pre-screened fresh feed; The dry ore amount of the pre-screened new feed is used as the dry ore amount of the cyclone overflow; Calculating the cyclone overflow water volume based on the cyclone overflow dry ore volume and overflow concentration; The overflow water volume is taken as the total water addition volume; The pump sump water addition amount is calculated based on the total water addition amount, the moisture content of the pre-screened fresh feed, the pre-screened water addition amount and the mill water addition amount.

8. A pellet grinding water control device, characterized in that: Applicable to the grinding feed water adding system, the grinding feed water adding system includes a pre-screen, a grinding mill, a pump tank, and a cyclone. The device includes: The first acquisition module is used to obtain the pre-screened wet ore amount of the pre-screened new feed, the original moisture content of the pre-screened new feed, the oversize yield, the oversize concentration entering the mill, the mill grinding concentration target value, and the water content of the pre-screened material entering the mill; The second acquisition module is used to obtain the inlet concentration, overflow concentration, underflow return sand concentration and circulation load of the cyclone; a first calculation module, configured to calculate the mill water addition amount and the pre-screen water addition amount based on the wet ore amount of the pre-screened fresh feed, the original moisture content of the pre-screened fresh feed, the circulating load, the oversize yield, the oversize material feeding mill concentration, the underflow return sand concentration, the mill grinding concentration target value, and the water content of the pre-screened material entering the mill; a second calculation module, configured to calculate a pump pool water addition amount based on the pre-screened fresh feed wet ore amount, the pre-screened fresh feed original moisture content, the overflow concentration, the mill water addition amount, and the pre-screened water addition amount; A control module is used to control the water addition of the corresponding mill, the pre-screen and the pump pool based on the water addition amount of the mill, the water addition amount of the pre-screen and the water addition amount of the pump pool.

9. A grinding feed water adding system, characterized in that: Includes a pre-screen, a mill, a pump sump, a cyclone, a storage unit and a processor, wherein: The memory is used to store computer programs; The processor is configured to implement the steps of the pellet grinding water addition control method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the pellet grinding water addition control method according to any one of claims 1 to 7 are implemented.

Images