In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called _____________ is produced?

Related Mcqs:

Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) ?

A. 0.5 D B. D C. 1.5 D D. 2 D...

During agitation of liquids, the_________________?

A. Froude number is independent for the curves between power number and Reynolds number in baffled system B. Power number becomes independent of impellers Reynolds number at high Reynolds number, but is dependent on the geometry of the impeller C. Froude number is used to account for the effect of surface (e.g., the centre vortex) … During agitation of liquids, the_________________?Read More...

As particle size is reduced__________________?

A. Screening becomes progressively more difficult B. Screening becomes progressively easier C. Capacity and effectiveness of the screen is increased D. None of these...

Optimum ratio of operating speed to critical speed of a trommel is_____________________?

A. 0.33-0.45 B. 1.33-1.45 C. 0.5-2 D. 1.5-2.5...

A screen is said to be blinded, when the___________________?

A. Over-sizes are present in undersize fraction B. Under-sizes are retained in oversize fraction C. Screen is plugged with solid particles D. Screen capacity is abruptly increased...