Chemical Engineering Answers

Which power law states that the work required for crushing is proportional to size reduction ratio?

a) Kick's law

b). Rittengers law

c) Bond's law d) Stokes law

e) Newton's law

To store the solids short period, which storage vessel useful..........

a) Silo

b) Bin

c) Hopper

d)- All of the above

e) None of the above

In a rotary-drum filter, the fractional submergence of the drum in the slurry is about

a) 0.03 b) 0.30

c) 0.50

d) 0.90

Define the term Sedimentation..............

Define the term thickener....

Define the term frothing agent in froth flotation process...........

select the correct statement

i) Cake filters separate relatively large amounts of solids as a cake of crystals ii) In cake filtration, after brief initial period the cake of solids does the filtration, not the septum

iii) In clarifying filters, the pores of filter medium are much larger in diameter than the particles to be removed iv) A precoat filter is a modified form of a rotary-drum filter

a) i) & ii) only b) i),ii) & iv) only c) i) & iv) only d) all of the above

Feed size of ≥ 25cms can be accepted by

a) Ball mill b). Rod mill

d) Fluid energy mil

Total resistances during washing of cake

a) Increases

b) Decreases

c) Remain constant

d). Changes

Define the term cross filtration?