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Mechanical Operations

Mechanical Operations
__________ are used for the separation of coarse particles from a slurry of fine particles.

Hydrocyclones
Decanters
Thickeners
Classifiers

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Mechanical Operations
Xanthates are used in the froth floatation process as a/an

Conditioner
Activator
Frother
Collector

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Mechanical Operations
For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is

2250
460
1125
230

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Mechanical Operations
Shape factor for a cylinder whose length equals its diameter is

0.5
1.5
1.0
2.0

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Mechanical Operations
Reciprocal of sphericity is termed as the

Surface area per unit mass
Sauter diameter
Specific surface ratio
Shape factor

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Mechanical Operations
Filtration rate does not depend upon the

Pressure drop & area of filtering surface
Properties of the cake & the filtrate
Resistance of the cake & the septum
None of these

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