234 posts
TimePosted 25/05/2010 11:37:05
xxxx says

Grindiability & Mill Shaft Power

(1)What is the relation between Bond Work Index &  Mill shaft power ?

For Ball Mill

For VRM shaft power

For Roller Press Shaft Power

What is the relation between Grindiability(KWh/t) of material with shaft power

for BM,RP,VRM in separate.

How can I calculate grindiability if I use to ball mills in series where part of the coarse of separator goes to small mill while the fresh feed with part of sep. coarse goes to big mill.

Close ckt with common separator

(2)IF Bond Index is 15.5 what will be the shaft power of ball mill & grindiability




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Michael Clark
312 posts
TimePosted 27/05/2010 08:46:18

Re: Grindiability & Mill Shaft Power

There is no direct relationship between Bond Work Index and the shaft power, just as there is no direct relationship with grindability. You can calculate the grindability of different materials ground on your composite milling system simply from the total kWh/t consumed to grind to a particular fineness. The only way to predict the grindability from the Bond Work Index would be in the light of experience with your milling system.