Related Questions

Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent.
A 20
B 40
C 65
D 80
__________ bricks are used in the burning zone of a cement rotary kiln.
A High alumina
B Fireclay
C Thoria
D Silicon carbide
Calcination of limestone is not done in a __________ kiln for producing lime.
A Vertical shaft
B Rotary
C Fluidised bed
D Fixed bed
Calcination of limestone to produce lime is done in a __________ kiln.
A Tunnel
B Rotary
C Vertical shaft
D Both B and C
Rotary kiln is not involved in the production of
A Cement
B Lime from limestone
C Slaked lime from quick lime
D None of these
Quick lime (or caustic lime)
A Is obtained by the calcination of pure lime stone
B Has great affinity to moisture
C Is amorphous
D All the above
Which of the following motors is usually preferred for kiln drives?
A Cascade controlled A.C. motor
B Slip ring induction motor
C Three phase shunt wound commutator motor
D Any of the above
Cement Kiln is a
A Rotary Kiln
B Tunnel Kiln
C Natural draft furnace
D Batch furnace
Advantage of a clamp compared to a kiln for burning bricks is that
A It takes less time for burning
B It gives more output of first class bricks
C It has less initial cost
D It is suitable when bricks are required in large numbers
How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?
A 500°C
B 750°C
C 1000°C
D 1500°C

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