With increase in drum speed, in a rotary drum filter, the filtration rate

Mechanical Operations
With increase in drum speed, in a rotary drum filter, the filtration rate

Decreases

Is not affected

Increases linearly

Increases

Decreases

Is not affected

Increases linearly

Increases

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Mechanical Operations
Sphericity of raschig ring (whose length and diameter are equal) is

2

>1

1

2

>1

1

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Mechanical Operations
Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is

√2

1

0.5

√3

√2

1

0.5

√3

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Mechanical Operations
A pebble mill

Is a tube mill lined with ceramic or other non-metallic liner

Employs flints or ceramic pebbles as the grinding medium

Both B and C

Is a ball mill

Is a tube mill lined with ceramic or other non-metallic liner

Employs flints or ceramic pebbles as the grinding medium

Both B and C

Is a ball mill

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Mechanical Operations
In case of a revolving mill, wet grinding compared to dry grinding

None of these

Has less capacity

Complicates handling & classification of the product

Requires more energy

None of these

Has less capacity

Complicates handling & classification of the product

Requires more energy

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Mechanical Operations
Bond crushing law

Calls for relatively less energy for the smaller product particles, than does the Rittinger law

States that the work required to form particle of any size from very large feed is proportional to the square root of the volume to surface ratio of the product

States that the work required for the crushing is proportional to the new surface created

Is less realistic in estimating the power requirements of commercial crushers

Calls for relatively less energy for the smaller product particles, than does the Rittinger law

States that the work required to form particle of any size from very large feed is proportional to the square root of the volume to surface ratio of the product

States that the work required for the crushing is proportional to the new surface created

Is less realistic in estimating the power requirements of commercial crushers

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Mechanical Operations

Mechanical Operations With increase in drum speed, in a rotary drum filter, the filtration rate

Mechanical Operations Sphericity of raschig ring (whose length and diameter are equal) is

Mechanical Operations Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is

Mechanical Operations A pebble mill

Mechanical Operations In case of a revolving mill, wet grinding compared to dry grinding

Mechanical Operations Bond crushing law

Mechanical Operations
With increase in drum speed, in a rotary drum filter, the filtration rate

Mechanical Operations
Sphericity of raschig ring (whose length and diameter are equal) is

Mechanical Operations
Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is

Mechanical Operations
A pebble mill

Mechanical Operations
In case of a revolving mill, wet grinding compared to dry grinding

Mechanical Operations
Bond crushing law