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Mechanical Operations

Mechanical Operations
__________ balls capable of grinding the feed in a ball mill gives the maximum efficiency.

Maximum size
Minimum size
Cast iron
Elliptical

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Mechanical Operations
Reduction ratio of crushers is the

Ratio of feed opening to discharge opening
Ratio of discharge opening to feed opening
None of these
Determining factor for minimum dia of the feed and the product

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Mechanical Operations
The crushed material received for separation is called feed or

Concentrate
Middling
Heading
Tailing

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Mechanical Operations
Ultrafine grinders operate principally by

Attrition
Impact
Cutting action
Slow compression

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Mechanical Operations
In a grinding operation, the limiting particle size is the size of the __________ particle in the sample.

Smallest
Largest
Either A or B
Neither A nor B

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Mechanical Operations
For benefication of iron ore, the most commonly used method is

Flocculation
Jigging & tabling
None of these
Froth floatation

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