Formula

General diameter of ball mill is in accordance with a formula:

hard ore

5 times of feed particle size, such as,if the feed granularity is 20 mm,the steel ball generally choose 100 mm.

Medium hardness ore

4 times of feed particle size , such as, the feed granularity is 20 mm,the steel ball generally choose 80 mm.

Choose to conform to the first paragraph above ball mill, the second paragraph should add some balls. Minimum but not less than 10 mm, less than 10 mm steel ball for grinding doesn't work.

Experience

The experience For the first time to choose a steel ball according to the following methods.For the first time to choose steel ball,the maximum diameter should about 80% with the ball.Add again after a few days to be functioning steady, namely the size of gears running-in.The commonly used ratio is as flollow:

  • Big ball,which has 120 or 100 mm diameter,is 30% to 40% of the machine volume.
  • Medium ball,which has 80 mm diameter,is 30% to 40% of the machine volume.
  • Small ball,which has 60 or 40 mm diameter,is 30% of the machine volume.

We can additional add different types of steel ball according to the production situation subsequent.

Previous Article: How To Choose Suitable Crusher

Next Article: How To Extend Cone Crusher Service Life