Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of__________________?

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...

In a ball mill, the volume occupied by the balls (when the mill is stopped) is about _______________ percent of the volume of the mill?

A. 35 B. 50 C. 70 D. 85...

During filtration operation, the filtrate encounters the resistance of the ___________________?

A. Filter medium B. Cake C. Channel carrying the slurry to the upstream side of the cake and filtrate away from the filter medium D. All A., B. and C....

Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a__________________?

A. Pug mill B. Mixer-extruder C. Banbury mixer D. Muller mixer...

The process by which fine solids is removed from liquids is termed as _____________________?

A. Decantation B. Flocculation C. Sedimentation D. Classification...