In ball mill operation, the feed size ( D f in meters) and the ball diameter ( D b in metres) are related as ( where, K = grindability constant (varying from 0.9 to 1.4 in increasing order of hard ness))

In ball mill operation, the feed size ( D f in meters) and the ball di

1.	In ball mill operation, the feed size ( D f in meters) and the ball diameter ( D b in metres) are related as ( where, K = grindability constant (varying from 0.9 to 1.4 in increasing order of hard ness))
A.	D b 2 = K . D f
B.	D b = K . D f
C.	D b 3 = K . D f
D.	D b 2 = K . D f 2
Answer» B. D b = K . D f

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In ball mill operation, the feed size ( D f in meters) and the ball diameter ( D b in metres) are related as ( where, K = grindability constant (varying from 0.9 to 1.4 in increasing order of hard ness))

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