Which of the following is used for primary crushing of very hard lumpy materials ?

Related Mcqs:

Screw conveyors are________________?

A. Run at very high rpm B. Suitable for sticky materials C. Suitable for highly abrasive materials D. All A., B. and C....

Run of mine (ROM) coal is crushed by a _________________________ for use in domestic ovens?

A. Jaw crusher B. Hammer crusher C. Ball mill D. Tube mill...

_____________ mills are termed as disintegrators?

A. Cage B. Compartment C. Pebble D. All tumbling...

Pick out the wrong statement ?

A. Gape is the greatest distance between the crushing surfaces or the jaws B. The angle of nip (2α) is the angle between roll faces at the level where they will just take hold of a particle and draw it in the crushing zone C. Crushing efficiency is the ratio of the energy absorbed by … Pick out the wrong statement ?Read More...

A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is ___________________?

A. ½w2 . R2 . ρL B. ½w2 . δ2 . ρL C. ½w2 . δρL (2R + δ) D. ½w2 . R . ρL(R + 2δ)...