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Mechanical Operations

Mechanical Operations
Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a

Mixer-extruder
Pug mill
Banbury mixer
Muller mixer

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Mechanical Operations
In case of a hammer crusher, the

Minimum product size is 3 mm
Maximum feed size may be 50 mm
Feed may be highly abrasive (Moh's scale >5)
Rotor shaft carrying hammers can be vertical or horizontal

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Mechanical Operations
Handling of ashes and similar materials can be done best by a __________ conveyor.

Ribbon
Belt
Flight
Drag or slat

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Mechanical Operations
Flow of filtrate through the cake in a plate and frame filter press is best described by the __________ equation.

Fanning's
Kozney-Karman
Hagen-Poiseulle's
Kremser

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Mechanical Operations
The main differentiation factor between tube mill and ball mill is the

Size of the grinding media
Length to diameter ratio
Operating speed
Final product size

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Mechanical Operations
Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with __________ to get the same for dry grinding.

1
0.5
4.34
1.34

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