Work index is defined as the
A. Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen
B. Energy needed to crush one tonne of feed to 200 microns
C. Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen
D. Energy needed to crush one ton of feed to 100 microns
Answer: Option A
This Question Belongs to Chemical Engineering >> Mechanical Operations
A. Rittinger's law
B. Kick's law
C. Bond's law
D. None of these
Traces of solids are removed from, liquid in a
A. Classifier
B. Clarifier
C. Sparkler filter
D. Rotary vacuum filter
Which of the following is not categorised as a "mechanical operation"?
A. Agitation
B. Filtration
C. Size enlargement
D. Humidification
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