High Filling Ratio Improves Efficiency of Ball Grinder

5/31/2013 5:21:01 PM

Filling ratio of grinding ball has a lot of influence on grinding efficiency of tubular type ball grinder which is a new kind of powder grinding machine.

Grinding ball of ball making equipment is with cascade-shower function in the trajectory. The allowance of ball grinder’s kinetic energy makes grinding body and lining board be worn by strong impact, which worsens the dissociation of mineral ores. In order to overcome the disadvantages of ball mill machine in grinding process and strengthen the grinding process, we can improve load of ball grinder and filling ratio of grinding ball.
Here, let’s analyse the mechanism for filling ratio of grinding ball improving grinding efficiency of tubular type ball grinder.
Under the condition of high filling ratio, the energy of grinding media can be used more rationally. First, it greatly reduces the allowance of grinding ball’s kinetic energy, which makes kinetic energy close to the necessary value for crushing process of oxidized ore, therefore, mineral particles can get more reasonable dissociation, at the same time, argillization degree decreases.
We can verify the effect of high filling ratio on grinding efficiency of ball mill machine as follows: Taking a test under the condition that the filling ratios of grinding ball are respectively 0.4 and 0.8. According to results of the test we find that grinding energy consumption reduces by 50%, productivity caculated according to products grade increases by 40% and argillization degree reduces by 8% ~ 10% if the filling ratio is improved from 0.4 to 0.8.
In addition, the ore volume is equal to the space volume between steel balls within the mill; when filling ratio is 0.8, the space between balls is once larger than that of 0.4 filling ratio, thus improving the productivity of ball mill machine.