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Mechanical Operations

Mechanical Operations
The critical speed of a trommel (N) is related to its dia (D) as

N ∝ 1/D
N ∝ D
N ∝ √D
N ∝ 1/√D

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Mechanical Operations
The most common filter aid is

Calcium silicate
Sodium carbonate
Silica gel
Diatomaceous earth

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Mechanical Operations
__________ mill is not a revolving mill.

Cage
Tube
Pebble
Compartment

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Mechanical Operations
Mixing of light fine powder such as insecticides is done by

Kneader
Banbery mixer
Pug mill
Impact wheels

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Mechanical Operations
Fluid energy mill comes in the category of

Crusher
Grinder
Cutter
Ultrafine grinder

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Mechanical Operations
Dust laden air can be purified using a

Gravity settler
Bag filter
Cyclone separator
Tubular centrifuge

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