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Mechanical Operations

Mechanical Operations
Gold ore concentration is mostly done using

Froth floatation
Elutriation
Tabling
Jigging

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Mechanical Operations
Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the

Cage mill
Blake jaw crusher
Stamp mill
Bradford's breaker

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

Tailing
Heading
Concentrate
Middling

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Mechanical Operations
Sauter mean diameter is the same as the __________ mean diameter.

Mass
Volume-surface
Geometric
Arithmetic

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Mechanical Operations
Size reduction does not occur due to compression in case of

Gyratory crushers
Jaw crushers
Rod mills
Smooth roll crushers

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Mechanical Operations
The work index in Bond's law for crushing of solids has the following dimensions

KW/ton
KWh/ton
No units (dimensionless)
KWh.m1/2/ton

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