Rod mills employed for grinding_________________?

Byadmin February 18, 2019August 23, 2021

Rod mills employed for grinding_________________?

A. Employ a steel shell having L/D ratio of 1.5 to 3.0
B. Is useful for handling sticky materials
C. Employ steel rods of 2-12 cms diameter extending over full length of the mill
D. All A , B & C

Mechanical Operations

In closed circuit grinding as compared to open circuit grinding, the_________________?

In closed circuit grinding as compared to open circuit grinding, the_________________?

A. Specific surface of product is more
B. Product has lesser size uniformity
C. Production rate at a given limiting size is lower
D. Operation is economical

Read More In closed circuit grinding as compared to open circuit grinding, the_________________?
Mechanical Operations

_____________ mills are termed as impactors?

_____________ mills are termed as impactors?

A. Hammer
B. Cage
C. Rolling-compression
D. None of these

Read More _____________ mills are termed as impactors?
Mechanical Operations

For a non-spherical particle, the sphericity__________________?

For a non-spherical particle, the sphericity__________________?

A. Is defined as the ratio of surface area of a sphere having the same volume as the particle to the
actual surface area of the particle
B. Has the dimension of length
C. Is always less than 1
D. Is the ratio of volume of a sphere having the same surface area as the particle to the actual
volume of the particle

Read More For a non-spherical particle, the sphericity__________________?
Mechanical Operations

Which of the following is not accomplished by agitation of liquids in agitators ?

Which of the following is not accomplished by agitation of liquids in agitators ?

A. Dispersing gas in liquid
B. Blending of immiscible liquids
C. Dispersing immiscible liquid in form of emulsion
D. Suspending solid particles

Read More Which of the following is not accomplished by agitation of liquids in agitators ?
Mechanical Operations

Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle. and, D = equivalent diameter of particle)?

Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle. and, D = equivalent diameter of particle)?

A. 6.V/D.S
B. V/6D.S
C. D.S/V
D. V/D.S

Read More Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle. and, D = equivalent diameter of particle)?
Mechanical Operations

Xanthates are used in the froth floatation process as a/an _______________________?

Xanthates are used in the froth floatation process as a/an _______________________?

A. Conditioner
B. Frother
C. Collector
D. Activator

Read More Xanthates are used in the froth floatation process as a/an _______________________?

Similar Posts