Overflow Type Ball Mill. Overflow Type Ball Mill A ball mill with simple structure and auto-flowing pulp d.Mar 13, 2011 Disadvantages of ball mill are (1) bulky size (2) running a strong vibration and noise, there must be a solid foundation (3) low efficiency, energy consumption is relatively large (4) grinding the friction loss and a great body, and will stain products. Crush the hard materials are widely used materials. End. Email.