Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripheral velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m3 here, V =πND where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m) ?

Related Mcqs:

The critical speed of a trommel (N) is related to its dia D. as _____________________?

A. N ∝ 1/√D B. N ∝ √D C. N ∝ D D. N ∝ 1/D...

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...

In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of _______________ crushing?

A. Primary B. Secondary C. Fine D. Ultrafine...

Which is a secondary crusher for a hard & tough stone ?

A. Jaw crusher B. Cone crusher C. Impact crusher D. Toothed roll crusher...

Filtration rate through a filter cake is proportional to (where, S = filtering surface R = specific cake resistance μ = viscosity of the filtrate) ?

A. S B. 1/R C. 1/μ D. All A., B. & C....