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Mechanical Operations

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

√2
√3
0.5
1

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Mechanical Operations
__________ are used for the separation of coarse particles from a slurry of fine particles.

Decanters
Thickeners
Hydrocyclones
Classifiers

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Mechanical Operations
Size measurement of ultrafine particles can be best expressed in terms of

Centimetre
Surface area per unit mass
Micron
Screen size

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Mechanical Operations
Ultrafine grinders operate principally by

Cutting action
Slow compression
Attrition
Impact

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Mechanical Operations
Bucket elevators are not suitable for the vertical lifting of __________ materials.

Free flowing
Sticky (e.g. clay paste)
Fine (e.g. - 200 mesh size coal)
Small lumpy (e.g. grains and sand)

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Mechanical Operations
There is practically no alternative/competitor to __________ in the beneficiation treatment of sulphide ores.

Tabling
Jigging
Classification
Froth floatation

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