Use of ‘grinding aids’ is done in _______________ grinding?
Use of ‘grinding aids’ is done in _______________ grinding?
A. Dry
B. Wet
C. Ultrafine
D. Intermediate
Similar Posts
Energy consumed for crushing one ton of material ranges from ______________ kWh?
Energy consumed for crushing one ton of material ranges from ______________ kWh?A. 0.01 to 0.1
B. 0.5 to 1.5
C. 2 to 3.5
D. 4 to 5Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the____________________?
Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the____________________?A. Density separation
B. Differential wettability
C. Size
D. Volatile matter contentBasic slag is not ground in_________________?
Basic slag is not ground in_________________?A. Jaw crushers
B. Ball mills
C. Compartment mills
D. Tube millsWidth and speed of a conveyor belt depends upon the ______________ of the material?
Width and speed of a conveyor belt depends upon the ______________ of the material?A. Lump size
B. Bulk density
C. Both A. & B.
D. Neither A. nor B.Which of the following equations is Rittinger’s crushing law? (Where P = power required by the machine, m = feed rate, k = a constant, D̅ sa & D̅ sb = volume surface mean diameter of feed & product respectively) ?
Which of the following equations is Rittinger’s crushing law? (Where P = power required by the machine, m = feed rate, k = a constant, D̅ sa & D̅ sb = volume surface mean diameter of feed & product respectively) ?A. P/m = K/ √Dp
B. P/m = K . ln D̅ sa/D̅ sb
C. P/m = K . (1/ D̅ sb – 1/D̅ sa)
D. None of theseSorting classifiers employing differential settling methods for separation of particles make use of the differences in their_________________?
Sorting classifiers employing differential settling methods for separation of particles make use of the differences in their_________________?A. Particle sizes
B. Densities
C. Terminal velocities
D. None of these