Mechanical Operations
Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a

Batch basket centrifuge
Sparkler filter
Disc bowl centrifuge
Sharpies supercentrifuge

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Mechanical Operations
Bond crushing law

Calls for relatively less energy for the smaller product particles, than does the Rittinger law
States that the work required to form particle of any size from very large feed is proportional to the square root of the volume to surface ratio of the product
States that the work required for the crushing is proportional to the new surface created
Is less realistic in estimating the power requirements of commercial crushers

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