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Mechanical Operations

Mechanical Operations
Which of the following is not categorised as a "mechanical operation"?

Humidification
Agitation
Size enlargement
Filtration

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Mechanical Operations
Limestone is normally crushed in a

Hammer crusher
Ball mill
Roll crusher
Tube mill

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Mechanical Operations
Kick's law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick's constant is

KWh/kg
Kg/sec
KWh/sec. kg
KW. sec/kg

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Mechanical Operations
The reduction ratio for fine grinders is

As high as 100
44124
43961
20-40

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Mechanical Operations
What is the usual value of angle of nip for crushing of ordinary rock in smooth steel crushing rolls?

16°
32°
46°
40°

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Mechanical Operations
The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m² V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.ρ = density of solids, kg/m³)

3.6 AVS/ρ
3.6 AVS.ρ
3.6 A.V.ρ
3.6 A.S. ρ

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