Q. Jigging is a technique by which different particles can be

View solution

Q. Crushing of mineral particles is accomplished in a 'cage mill', when one or more alloy steel bars are revolved in opposite directions. It is a type of __________ mill.

View solution

Q. Balls for ball mills are never made of

View solution

Q. 200 mesh screen means 200 openings per

View solution

Q. __________ is the most commonly used 'filter aid'.

View solution

Q. 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

View solution

Q. Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is

View solution

Q. Which of the following relationships between co-efficinet of friction (μ) between rock & roll and a (half of the angle of nip) of the particle to be crushed is correct ?

View solution

Q. Pick out the wrong statement pertaining to the roll crushers.

View solution

Q. Which of the following is not an ultrafine grinder (colloid mill)?

View solution

Q. In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the

View solution

Q. For sizing of fine materials, the most suitable equipment is a

View solution

Q. Which of the following is not categorised as a "mechanical operation" ?

View solution

Q. Which of the following is a pressure filter ?

View solution

Q. Tabular bowl centrifuges as compared to disk bowl centrifuges

View solution

Q. Size reduction of __________ is accomplished in steam heated rollers and roll crushers.

View solution

Q. The capacity of a belt conveyor depends upon two factors. If one is the cross-section of the load, the other is the __________ of the belt.

View solution

Q. Which of the following is not a part of the Blake jaw crusher?

View solution

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

View solution

Q. Filter aid is used to

View solution