Related Questions

In a ball mill, the volume occupied by the balls (when the mill is stopped) is about __________ percent of the volume of the mill.
A 35
B 50
C 70
D 85
The cake resistance increases steadily with the time of filtration in a plate and frame filter employing constant __________ filtration.
A Rate
B Pressure
C Both A & B
D Neither A nor B
During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration
A At time zero
B At the end of filtration
C When half the filtrate has been obtained
D At the end of filtration, but decreases with time subsequently
Toggle Filter আইকনটি-i. Remove filter হিসেবে কাজ করেii. Undo filter হিসেবে কাজ করে iii. Apply filter হিসেবে কাজ করেনিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i, ii ও iii
Filtration operation carried out by continuous increase of the inlet pressure of slurry, is called the __________ filtration.
A Constant rate
B Varying pressure
C Varying rate
D Constant pressure
A. __________ mill is a revolving mill divided into two or more sections by perforated partitions in which preliminary grinding takes place at one end and the finishing grinding at the discharge end.
A Compartment
B Tube
C Rod
D Pebble
Crushing of mineral particles is accomplished in a 'cage mill', when one or more alloy steel bars are revolved in opposite directions. It is a type of __________ mill.
A Impact
B Roll
C Vibratory
D None of these
__________ mill is not a revolving mill.
A Pebble
B Compartment
C Cage
D Tube
For achieving maximum capacity of the ball mill, the ball charge should be equal to about __________ percent of the ball mill volume.
A 10
B 25
C 50
D 75
Addition of filter aid to the slurry before filtration is done to ...... of the cake.
A Increase the porosity
B Increase the compressibility co-efficient
C Decrease the porosity
D Decrease the compressibility co-efficient

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