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Mechanical Operations

Mechanical Operations
For the transportation of ultrafine particles, the equipment used is a........conveyor.

None of these
Pneumatic
Screw
Belt

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Mechanical Operations
Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about

5 to 10°
2 to 5°
1 to 2°
10 to 15°

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Mechanical Operations
Traces of solids are removed from, liquid in a

Clarifier
Rotary vacuum filter
Classifier
Sparkler filter

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Mechanical Operations
Length/diameter ratio of a ball mill is

> 1
1
< 1
1.5

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Mechanical Operations
Which of the following screens has the maximum capacity?

Grizzlies
Shaking screen
Vibrating screen
Trommels

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Mechanical Operations
The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond's law) of the energy to grind the particles from a very large size to 50 μrn is

25.4 kWh/ton
6.35 kWh/ton
9.0 kWh/ton
18 kWh/ton

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