Ball hardness for ball mill has a great impact, not only affects the work efficiency of the ball mill, and also affects the lining board of ball mill the loss rate, on the choice of steel ball, with two errors:
1 ball is not as stiff as possible, but has its proper hardness value;
2 ball density is a question which should not be neglected. Influence on hardness, generally speaking, with the hardness increases, as long as it's not broken, ball consumption decline; but also make the ball in small deformation, broken spheres deformation energy absorption, energy can be more used for crushing the ore particles, can make the mill productivity increase. But the hardness increases should be moderate, a proper range, not harder the better.
If only consider the ball consumption is higher hardness, lower consumption. But on the productivity of mill, in a certain range of productivity with ball hardness increases, but when the hardness over a certain range of productivity of mill produces adverse effect, make the mill productivity.