Intelligent ball mill control ball feeding method

Abstract

The application discloses a kind of intelligent ball mill control ball feeding methods, applied to the technical field of mining processing, the current of ball mill, the processing capacity of ball mill, the operation time of ball mill, according to the best relationship model of three ball mill ball feeding, through the proportional relationship between three, determine the amount of steel ball should be added, realize accurate ball feeding, and the effect of ball saving is good, and continuously adjust the continuous ball feeding amount according to the change of the three, improve the efficiency of grinding by the control of ball feeding amount.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mining processing, more particularly to an intelligent ball mill control ball feeding method. BACKGROUND

[0002] At present, ball mills are used in mining enterprises to grind ore. Steel balls are continuously added as grinding media during the grinding process to achieve the purpose of crushing ore. The crushed minerals become various fine particles of different diameters. The forces generated between the steel balls and the lining plate and between the steel balls during the grinding process are mainly throwing, extrusion and grinding. The effects of various forces are different, and they are suitable for crushing different ore particle sizes. Throwing is suitable for coarse particle crushing, and extrusion and grinding are suitable for fine particle crushing. Moreover, the consumption of steel balls in the mill is continuous and uninterrupted, and periodic addition to the ball mill is required. The filling rate of steel balls affects the operating efficiency of the ball mill. The traditional method of continuously adding steel ball media is manual addition. The amount of steel balls is added according to experience, and the addition is completed by a ball feeding machine (or complete manual ball feeding, which is a huge workload). Moreover, the steel balls are added at one time, and the consumption of one shift or one day is added to the ball mill at one time per shift or per day. After the addition of steel balls, the filling rate of the ball mill and the effect of the mill cannot be known, which easily causes large changes in the filling rate of the ball mill and affects the grinding efficiency of the ball mill.

[0003] Therefore, how to realize intelligent ball feeding of the ball mill and improve the grinding efficiency is a problem that needs to be solved by those skilled in the art. SUMMARY

[0004] Therefore, the present application provides an intelligent ball mill control ball feeding method. Considering the current, operating rate and processing capacity that affect the efficiency of the ball mill, the amount of steel balls added to the ball mill is determined through the relationship between the three, so that the filling rate of the ball mill is most reasonable. Thus, the purpose of controlling the amount of steel balls and the way of adding steel balls is achieved by using big data fitting and calculation, so that the mill is in the best grinding state for a long time and the grinding efficiency is improved.

[0005] To achieve the above purpose, the present application adopts the following technical solutions:

[0006] An intelligent ball mill control ball feeding method comprises the following steps:

[0007] Step 1: Collect the running signals of the ball mill, and accumulate the running signal duration to obtain the operating time;

[0008] Step 2: Collect the feed amount of the ball mill and accumulate the processing capacity;

[0009] Step 3: Collect the ball mill current data, calculate the current difference value between the current data and the standard current value, calculate the ball adding amount according to the operation time, processing capacity, current difference value and preset operation weight, processing weight and current weight; the operation time and processing capacity control the opening of the ball adding operation, that is, the start of calculating the ball adding amount, and the current weight is manually set, that is, how many steel balls need to be added when the difference value is 1 ampere, so the ball adding amount is equal to the product of the difference value and the ball adding weight coefficient;

[0010] Step 4: Calculate the current average value in the preset period at the current time, compare the current average value with the preset standard value, and select the ball adding mode or the ball reducing mode according to the comparison result;

[0011] Step 5: According to the selected module and the ball adding amount, increase or reduce the ball adding amount in the ball mill.

[0012] Preferably, the motor of the ball mill runs, and the running signal is 1, and the motor does not run, and the running signal is 0, and the running signal is transmitted to the controller for accumulation, and the running signal is 1, and the timing is 0.

[0013] Preferably, the amount of feed added to the ball mill is weighed, and the weighing data is transmitted to the controller for accumulation.

[0014] Preferably, if the current average value is less than the preset standard value, the ball adding mode is selected, otherwise the ball reducing mode is selected.

[0015] Preferably, the historical current data of the ball mill is collected, and a current trend graph, that is, a two-dimensional graph of the time sequence change of the current, is obtained by calculation, and the current weight is determined according to the ball adding amount data corresponding to the current trend graph and the historical current data.

[0016] Preferably, the historical operation time of the ball mill is collected, and an operation trend graph, that is, a two-dimensional graph of the time sequence change of the operation time, is obtained by calculation, and the operation weight is determined according to the ball adding amount data corresponding to the operation trend graph and the historical operation time.

[0017] Preferably, the historical processing capacity of the ball mill is collected, and a processing trend graph, that is, a two-dimensional graph of the time sequence change of the processing capacity, is obtained by calculation, and the processing weight is determined according to the ball adding amount data corresponding to the processing trend graph and the historical processing capacity.

[0018] Through the above technical solution, it can be known that compared with the prior art, the present invention discloses a kind of intelligent ball mill control ball adding method, the grinding efficiency of the ball mill is reflected by the ball mill current, the ball mill processes the cumulative amount of ore to the steel ball consumption, and the consumption of the ball mill steel balls is related to the operating rate at the same time, and the amount of steel balls consumed by the long operating time increases, so the current of the ball mill, the processing capacity of the ball mill, and the operating time of the ball mill are collected, and the best relationship model of the ball mill is established according to the three, and the information collected by the three is directly input into the controller, and the proportional relationship between the three is determined to determine the amount of steel balls to be added, so as to achieve accurate ball addition and better ball saving effect, and continuously adjust the continuous ball addition amount according to the changes of the three, and improve the efficiency of grinding by controlling the ball addition amount. The method of the present invention can completely replace manual ball addition, without manual intervention, accurately and effectively control the filling rate of the ball mill, and rationally plan the system of adding balls. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 The accompanying drawing is a schematic diagram of data transmission for controlling ball addition in an intelligent ball mill provided by the present invention. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 are within the scope of protection of the present invention.

[0022] The embodiment of the present invention discloses an intelligent ball mill control and ball adding method. The current of the ball mill is collected, and the algorithm controller analyzes and calculates the current trend according to time; the operation time of the ball mill is collected, and the cumulative calculation is performed in the algorithm controller, and the trend is determined to obtain the relationship between the actual amount of steel balls consumed and the time of steel ball consumption. The algorithm controller can perform a two-dimensional display and query of the actual amount of steel balls consumed, the time of steel ball consumption, and the two-dimensional display and query of the time of steel ball consumption; the feed amount of the ball mill is collected, and the cumulative calculation of the processing amount is performed in the algorithm controller, and the steel ball consumption trend is obtained according to time analysis; a ball adding prediction model is constructed based on the current, operation time and processing amount, and the relationship between the three is used to establish the amount of balls that should be added, so as to realize the intelligent control of the ball adding machine for automatic ball adding. Specifically:

[0023] Detect the current of the ball mill, and perform trend analysis of the current in hours, days, and months. Collect the cumulative processing amount of the ball mill, and perform steel ball consumption analysis in hours, days, and months. Obtain the relationship between the actual amount of consumed steel balls and the time and the amount of consumed steel balls. Collect the operating time of the ball mill, and perform steel ball consumption analysis in hours, days, and months. Obtain the relationship between the actual amount of consumed steel balls and the time and the amount of consumed steel balls. The two kinds of analysis data can be displayed and queried in two dimensions in the algorithm controller. The current, cumulative processing amount, and operating time are modeled and calculated to obtain the final amount of added balls per hour. The ball adding machine is automatically controlled to add balls into the ball mill according to the amount of added balls per hour. The cumulative calculation method is used to calculate the filling rate of the steel balls in the ball mill. The key point of the invention is to collect and calculate the current, cumulative processing amount, and operating time of the ball mill, model, form trend analysis of the filling rate of the ball mill, simulate the change of the filling rate of the steel balls in the ball mill, and finally realize the goal of intelligent ball adding, which completely replaces manual ball adding.

[0024] The algorithm of the intelligent ball mill control ball adding method is divided into three parts. The first part is the operating rate. The running signal of the motor of the ball mill is collected (as long as the motor runs, the ball mill is considered to run). The signal enters the controller. The controller counts the time according to the running signal being "1" and does not count the time according to the running signal being "0". When the cumulative time reaches 1 hour, the number of balls to be added is calculated according to the current value. The calculation of the number of added balls is continuously changed in the actual adding process according to the original set value. For example, if the current becomes smaller, the number of balls needs to be increased. The increase is calculated according to the current part. The second part is the accumulation of the processing amount of the ball mill, which is measured in tons. An electronic scale is added before the material enters the ball mill to measure the amount of material entering the ball mill. The material amount signal also enters the controller and is accumulated. The amount of added balls is determined according to the accumulated material amount. For example, when 100 tons are processed, the amount of added balls is 5 kg, which is calculated according to the average consumption of manual ball adding. The third part is to collect the current size of the ball mill, which also enters the controller and is processed by the average value. The average time is 24 hours. The average value is continuous, that is, the average current of the previous 24 hours is used for the current hour. The average current is compared with the standard value of the mill. If it is less than the standard value, the algorithm increases the number of added balls in proportion. If it is greater than the standard value, the algorithm decreases the number of added balls in proportion. The specified proportion is the amount of added balls required for each increase in current. The amount of added balls is divided by 24 to obtain the average amount of added balls per hour. The amount of added balls is added every hour. The three parts are combined into the total amount of added balls, which is distributed by the weight method. The total number of added balls is calculated by the weight method. The system starts the ball adding machine to add balls according to the weight ball amount. When the number of balls reaches the set value, the ball adding machine is stopped.

[0025] The various embodiments described in this specification are implemented in a progressive manner, each embodiment focusing on the differences from other embodiments, and the same or similar parts between embodiments can be mutually referred to. For the apparatus disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0026] The above description of disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for intelligent control of ball addition in a ball mill, characterized in that, The method comprises the following steps: Step 1: Collect the running signal of the ball mill, accumulate the running signal duration to obtain the working time; Step 2: Collect the feeding amount of the ball mill, and accumulate and calculate the processing amount; Step 3: Collect the current data of the ball mill, calculate the current difference value between the current data and the standard current value, and calculate the ball adding amount according to the working time, the processing amount, the current difference value, and the preset working weight, processing weight and current weight; When the working time accumulation reaches 1 hour, calculate the ball adding number according to the original setting value and the current; Calculate the ball adding amount according to the average consumption of the accumulated processing amount and manual ball adding amount; Calculate the average value of the current data, compare the average current with the standard current value, and calculate the average one-hour ball adding amount according to the ball adding amount for each increase of the current; Sum up the ball adding number and the ball adding amount as the total ball adding amount, distribute according to the weight method, and calculate the total ball adding number according to the weight; Step 4: Calculate the average value of the current in the preset period at the current time, compare the average value of the current with the preset standard value, and select the ball adding mode or the ball reducing mode according to the comparison result; Step 5: According to the selected mode and the ball adding amount, increase or reduce the ball adding amount in the ball mill.

2. The method as claimed in claim 1, wherein, The motor running signal of the ball mill is 1, and the motor not running signal is 0. The running signal is transmitted to the controller for accumulation. When the running signal is 1, the timing is started, and when the running signal is 0, the timing is not started. When the timing time reaches the preset time, the ball adding amount is calculated.

3. The method as claimed in claim 1, wherein, The feeding amount added into the ball mill is weighed, the weighing data is transmitted to the controller for accumulation, and when the accumulated processing amount reaches the preset weight, the ball adding amount is calculated.

4. The method as claimed in claim 1, wherein, If the average value of the current is less than the preset standard value, the ball adding mode is selected, otherwise the ball reducing mode is selected.

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