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EDEM-based mine ball mill working parameter optimization method

A technology of working parameters and optimization methods, applied in geometric CAD, special data processing applications, grain processing, etc., can solve problems such as cumbersome optimization design methods and weak optimization design of ball mill working parameters

Pending Publication Date: 2021-09-14
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ball mills are widely used in mine ore crushing operations due to their high grinding efficiency. However, in this process, how to better improve grinding efficiency and throughput, and reduce energy consumption and liner wear is more complicated. question
At present, the optimization of the ball mill based on the discrete element analysis method at home and abroad has been unprecedentedly developed, mainly focusing on the influence of the shape and size of the liner and the internal structure of the ball mill on the ball mill. However, the optimal design of the working parameters of the ball mill is still relatively weak, and the existing The optimization design method is more cumbersome

Method used

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  • EDEM-based mine ball mill working parameter optimization method
  • EDEM-based mine ball mill working parameter optimization method
  • EDEM-based mine ball mill working parameter optimization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] S1. Based on specific cases, optimize the working parameters of a 3.2m×3.1m ball mill. Preliminary preparations, including using SOLIDWORKS to establish a three-dimensional model of the ball mill, setting the radius and length of the cylinder liner of the ball mill and the thickness of the rectangular liner (the height difference is 30mm), and exporting the .stl model file, and calculating the ball and The amount of ore, and the critical speed of the ball mill is 22.34r / min;

[0034] S2. Set the material property parameters according to the material property parameters of steel balls, ore and liner in actual grinding, and set the interaction parameters between ore, steel ball and liner;

[0035] Table 1:

[0036]

[0037] Table 2:

[0038]

[0039] S3, set the filling rate of the ball mill to 20%, by the formula where n i The quantity to be filled for each particle; V 总 is the total filling volume of the ball mill; λ is the coefficient of looseness λ=4.8t / m ...

Embodiment 2

[0055] S1. Based on specific cases, optimize the working parameters of a 3.2m×3.6m ball mill. Preliminary preparations, including using SOLIDWORKS to establish a three-dimensional model of the ball mill, setting the radius and length of the cylinder liner of the ball mill and the thickness of the rectangular liner (the height difference is 30mm), and exporting the .stl model file, and calculating the number of balls according to the filling rate of the ball mill and the number of ores, and the critical speed of the ball mill is 23.71r / min;

[0056] S2. Set material property parameters according to the material property parameters of steel balls, ore and liner in actual grinding, and set interaction parameters among ore, steel ball and liner.

[0057] table 5:

[0058]

[0059] Table 6:

[0060]

[0061] S3, set the filling rate of the ball mill to 25%, by the formula where n i The quantity to be filled for each particle; V 总 is the total filling volume of the ball ...

Embodiment 3

[0079] S1. Based on specific cases, optimize the working parameters of a 3.6m×6.0m ball mill. Preliminary preparations, including using SOLIDWORKS to establish a three-dimensional model of the ball mill, setting the radius and length of the cylinder liner of the ball mill and the thickness of the rectangular liner, and exporting the .stl model file, and calculating the number of balls and ores according to the filling rate of the ball mill, as well as the The critical speed is 22.34r / min;

[0080] S2. Set material property parameters according to the material property parameters of steel balls, ore and liner in actual grinding, and set interaction parameters among ore, steel ball and liner.

[0081] Table 10:

[0082]

[0083] Table 11:

[0084]

[0085] S3, set the filling rate of the ball mill to 20%, by the formula where n i The quantity to be filled for each particle; V 总 is the total filling volume of the ball mill; λ is the coefficient of looseness λ=4.8t / m ...

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Abstract

The invention belongs to the technical field of ore grinding, and particularly relates to an EDEM-based mine ball mill working parameter optimization method which is characterized by comprising the following steps: step 1, early-stage preparation: establishing a ball mill three-dimensional model export. Stl model file, and calculating the number of grinding balls and ores and the critical rotation speed; step 2, setting material attribute parameters and interaction parameters; step 3, setting a particle model and a particle contact model; step 4, importing a three-dimensional geometric model of the ball mill. Stl model file, and setting a rotating speed rate; step 5, creating a particle factory; step 6, entering simulation setting; step 7, starting simulation; step 8, changing one of the rotating speed rate and the filling rate by applying a control variable method, and repeating the steps 1-8; and step 9, obtaining the primary and secondary sequence of the influence of each working parameter on the index and the optimal parameter cooperation. According to the invention, the specific powers of different cylinders can be obtained by simulating different working parameters, which reflects the ore grinding efficiency under different working conditions, so that the optimal working parameter cooperation can be effectively simulated before the ball mill completes the ore grinding work.

Description

technical field [0001] The invention belongs to the technical field of ore grinding, and in particular relates to an EDEM-based method for optimizing the working parameters of a mine ball mill. Background technique [0002] Ball mills are widely used in mine ore crushing operations due to their high grinding efficiency. However, in this process, how to better improve grinding efficiency and throughput, and reduce energy consumption and liner wear is more complicated. question. At present, the optimization of the ball mill based on the discrete element analysis method at home and abroad has been unprecedentedly developed, mainly focusing on the influence of the shape and size of the liner and the internal structure of the ball mill on the ball mill. However, the optimal design of the working parameters of the ball mill is still relatively weak, and the existing The optimization design method is more cumbersome. The purpose of the present invention is to provide a relatively...

Claims

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Application Information

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IPC IPC(8): G06F30/17B02C17/10
CPCG06F30/17B02C17/10
Inventor 于洪军高志喆王永金陈小艳马泽天程福超宋传颂馨路明
Owner ANSTEEL GRP MINING CO LTD