Question

The volume of ball in Ball Mill is -
O
30 - 60%
O
30 - 40%
30 - 50%
O
30 - 70%​

Answer 1

Answer:

3.5.

Ball mills tumble iron or steel balls with the ore. The balls are initially 5–10 cm diameter but gradually wear away as grinding of the ore proceeds. The feed to ball mills (dry basis) is typically 75 vol. -% ore and 25% steel.