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Steel ball grading method of ball milling machine and application of steel ball grading method

A ball mill and steel ball technology, applied in grain processing and other directions, can solve the problems of not taking into account the grinding efficiency and energy-saving effect, etc., and achieve the effect of good ball milling, reducing the initial loading, and increasing the size and variety.

Inactive Publication Date: 2017-06-30
孙东印 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rated setting value does not take into account the grinding efficiency and energy saving effect. Therefore, a steel ball grading method with both efficiency and energy saving is required

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] This embodiment provides a ball mill energy-saving and efficiency-enhancing method. The Mt Z3560 coal mill is selected. The initial steel balls are 30 tons, and the size distribution is: 9 tons of φ20 steel balls; 12 tons of φ30 steel balls; 1.2 tons of φ40 steel balls ; 4.2 tons of φ50 steel balls; 3 tons of φ60 steel balls; 0.6 tons of φ70 steel balls. After the start-up, 3 tons of steel balls are added every 90 days, and the size distribution of the added steel balls is the same as that of the initial installation.

Embodiment 2

[0016] This embodiment provides a ball mill energy-saving and efficiency-enhancing method. The Mt Z3560 coal mill is selected. The initial steel balls are 30 tons, and the size distribution is: 9 tons of φ20 steel balls; 12 tons of φ30 steel balls; 1.2 tons of φ40 steel balls ; 4.2 tons of φ50 steel balls; 3 tons of φ60 steel balls; 0.6 tons of φ70 steel balls. After the start-up, 3 tons of steel balls are added every 90 days, and the size distribution of the added steel balls is the same as that of the initial installation.

Embodiment 3

[0018] This embodiment provides a ball mill energy-saving and efficiency-enhancing method. The Mt Z3560 coal mill is selected. The initial steel balls are 27.5 tons, and the size distribution is: 8.25 tons of φ20 steel balls; 11 tons of φ30 steel balls; 1.1 tons of φ40 steel balls ; φ50 steel ball 3.85 tons; φ60 steel ball 2.75 tons; φ70 steel ball 0.55 tons. After the start-up, 2.2 tons of steel balls are added every 80 days, and the size distribution of the added steel balls is the same as that of the initial installation.

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Abstract

The invention provides a steel ball grading method of a ball milling machine and application of the steel ball grading method. According to the grading method, the initial steel ball arranging amount of the ball milling machine is 50%-60% of the mass of the rated initial arranging amount, and 8%-12% of the mass of the initial steel ball arranging amount is added every 80-100 days. By means of the method, the initial steel ball arranging amount is reduced, the steel ball size kinds are increased, the mutual collision opportunity of steel balls and materials is increased, the time when the materials reach the required fineness is shortened, accordingly, energy is saved, and the grinding efficiency is improved. According to the obvious energy saving index, energy is saved by 30% or above on the premise that the powder discharging rate and the fineness meet the requirement; and if the fineness is kept unchangeable, the powder discharging rate can be increased by about 40%.

Description

technical field [0001] The invention relates to the technical field of ball milling, in particular to a steel ball grading method for a ball mill and an application thereof. Background technique [0002] The ball mill is one of the high-fine grinding machines widely used in industrial production. It consists of a drive motor, a reducer, a cylinder and a cylinder liner. The cylinder body is a horizontal long cylinder, and a certain amount of steel balls are installed in the cylinder, with different diameters and different proportions of various sizes. The drive motor drives the cylinder to rotate through the reducer to achieve impact grinding on the material. Therefore, the purpose of grading steel balls is to improve the grinding efficiency and achieve the purpose of saving energy and reducing consumption under the premise of ensuring the fineness of the grinding materials. Whether the crushing requirements can be met depends on whether the gradation of the steel balls is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C17/20
CPCB02C17/205
Inventor 孙东印马汝建陈小青陈洪山
Owner 孙东印
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