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Mechanical Operations

Mechanical Operations
In froth floatation, chemical agent added to cause air adherence is called

Frother
Collector
Modifier
Activator

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Mechanical Operations
For coarse reduction of hard solids, use

Compression
Cutting
Attrition
Impact

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Mechanical Operations
For spheres, volume shape factor is given by

π(=A/D²)
2π(=2A/D²)
AD/V
π/6(=V/D³)

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Mechanical Operations
Chance process is used for the

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

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Mechanical Operations
The optimum moisture content in solids to be crushed/ground ranges from __________ percent.

10 to 15
15 to 20
8 to 10
3 to 4

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Mechanical Operations
Limestone is normally crushed in a

Hammer crusher
Roll crusher
Tube mill
Ball mill

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