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Mechanical Operations

Mechanical Operations
Pine oil and cresylic acid are used as __________ in the froth floatation process.

Depressor
Collector
Conditioner
Frother

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Mechanical Operations
Mass flow of granular solid (M) through a circular opening of dia, D follows

M ∝ D³
M ∝ √D
M ∝ D
M ∝ D²

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Mechanical Operations
Solid particles separation based on the difference in their flow velocities through fluids is termed as the

Elutriation
Classification
Sedimentation
Clarification

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Mechanical Operations
What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls?

1
2.76
0.5
0.66

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Mechanical Operations
The process opposite to 'dispersion' is termed as the

Flocculation
Filtration
Sedimentation
None of these

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Mechanical Operations
Which of the following minerals is not subjected to magnetic separation method?

Chromite
Galena
Siderite
Rutile

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