aggregatecrushing on "How to improve the work efficiency of ball mill?"

aggregatecrushing — Thu, 19 Oct 2017 03:14:19 +0000

1. Control feed size. The granularity of the material entering the raymond mill is controlled between 25-15mm (the diameter of the ball mill is different and the feed particle size is different). The detailed rules will lead to too much fine material in the grinding process of the ball mill, so that the friction between the material and the material can not be reached. Too thick, will cause the ball to crush the material for a long time, and will increase the wear degree of steel ball and liner, increase the maintenance cost of the mill.

2. Even feed. The feeding mode of ball mill is also important to achieve uniform feeding. If the feed is too little, it will lead to the ball mill in the absence of material layer and produce steel ball hitting steel ball, steel ball, steel ball, but also will cause waste of power resources. If too much feed will cause the ball mill to rise belly, the belly will reduce the ball mill inside the ball movement efficiency, qualified material can not be discharged, and reduce production. Therefore, the feeding process should be uniform feeding.

3, improve the lining material, increase the effective volume of the cylinder. Increasing the effective volume of ball mill can improve the production efficiency of mill. Ordinary alloy liner thickness, weight, reducing the effective volume of the mill, but also increased the power consumption, will reduce the production efficiency of the ball mill. Therefore, the lining material is very important, ZGMn13 (Gao Menggang) liner is the appropriate choice, the liner thickness reasonable, and very wear-resistant, surface hardness of HV500, equivalent to about HRC45. This can not only increase the wear resistance of the liner, but also increase the effective volume of the cylinder, so as to improve the work efficiency of the ball mill.

4. Control filling rate and mill speed. The processing capacity of the ball mill increases with the increase of the filling rate of the steel ball, and the increase of the filling rate increases the probability of the ball grinding and the self grinding of the ore. The filling rate of wet lattice ball mill is generally 40-50%, the filling rate of overflow ball mill is generally 35-40%, and the filling rate of dry lattice type ball mill is generally 25-35%.

The rotation speed of the mill will produce three kinds of ball movement: 1, when the centrifugal movement; the cylinder speed increases to a certain limit, which reaches or exceeds the critical speed, all the media with the cylinder to rotate without falling, then known as centrifugal motion medium. In the centrifugal state, generally no grinding effect. 2, throwing state; ball mill in high speed operation, throwing drop motion state, at this time grinding process mainly impact crushing, grinding second. The ball mill usually works in this motion. 3, the falling state; ball mill in low speed operation produces the falling down movement state, the material mainly depends on the medium sliding and smashing and grinding.

DavidCadogan.ca Forums Topic: How to improve the work efficiency of ball mill?

aggregatecrushing on "How to improve the work efficiency of ball mill?"