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Mechanical Operations

Mechanical Operations
Ball mills and tube mills with flint or porcelain balls are used for size reduction of

Limestone
Asbestos
Non-metallic ores
Rubber

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Mechanical Operations
In a roll crusher, both the rolls

Are rotated towards each other
All of these
Run either at the same or different speeds
Have the same diameter

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Mechanical Operations
Chance process is used for the

Concentration of pyrites
Water treatment
Cleaning of coal
Concentration of iron ore

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Mechanical Operations
__________ mill is normally used for grinding of talc.

Ring-roll
Tube
Compartment
Pebble

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Mechanical Operations
The sphericity of a solid particle of cubical shape is

(π/6)1/2
(π/6)1/3
π
π/3

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Mechanical Operations
Percentage of drum submerged in the slurry in case of rotary drum filter is

3
25
85
30

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