National Institute of Technology 2007 B.Tech Chemical Engineering .- - Question Paper

N.I.T.K.
Time : one 1/2 hrs.
III SEM.B.TECH.-CHEMICAL ENGINEERING.
Mid-Term Examination- October 2006 CH 202 - PARTICULATE TECHNOLOGY
SURATHKAL
ans any 3 of the following:
How are particulate solids characterized? explain the development of Tylor
standard screens. provide importance of differential and cumulative screen
analysis. provide the formula for surface area of a mixture of solids based on
differential analysis. (10)
explain any 2 methods of storage and conveyance of solids in industry. (5+5)
3.a) List the size reduction equipments on the basis of feed size they handle, b) Derive the expression for critical speed of a ball mill. What is the operating
speed? elaborate cascading and cataracting in a ball mill. (4+4+2)
4.a) List the gas cleaning equipments used in industry,
b) define the working of a cyclone separators. (4+6)
5. Write notes any 2 of the following:
Size enlargement.
formula for three laws of size reduction. (4+6)
Double cane classifier
Hydraulic Jig.
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Earning:   Approval pending.