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Mechanical Operations

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

230
2250
460
1125

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Mechanical Operations
Which of the following is the most suitable for cleaning of fine coal dust (<0.5 mm)?

Spiral separator
Baum jig washer
Trough washer
Froth floatation

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Mechanical Operations
In washing type plate and frame filter press, the ratio of washing rate to the final filtrate rate is

4
1
1/2
1/4

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Mechanical Operations
For benefication of iron ore, the most commonly used method is

Froth floatation
None of these
Flocculation
Jigging & tabling

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Mechanical Operations
The most common filter aid is

Sodium carbonate
Silica gel
Diatomaceous earth
Calcium silicate

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Mechanical Operations
Basic slag is not ground in

Tube mills
Compartment mills
Ball mills
Jaw crushers

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