Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with ______________ to get the same for dry grinding?

Related Mcqs:

Laminar flow region is said to exist during agitation of a liquid in an agitator, when the value of Reynolds number is________________?

A. > 10 B. < 10 C. > 100 D. < 100...

Gyratory crushers compared to the reciprocating jaw crushers__________________?

A. Have greater capacity per unit of discharge area B. Crush intermittently C. Are less suitable for coarse materials D. Have less steady power consumption...

Fluid energy mill comes in the category of________________?

A. Grinder B. Crusher C. Cutter D. Ultrafine grinder...

If a force greater than that of gravity is used to separate solids & fluids of different densities, the process is termed as the __________________?

A. Sedimentation B. Flocculation C. Dispersion D. Centrifugation...

Addition of filter aid to the slurry before filtration is done to _______________ of the cake?

A. Increase the porosity B. Increase the compressibility co-efficient C. Decrease the porosity D. Decrease the compressibility co-efficient...