A. 5
B. 20
C. 35
D. 55
0
In chemical process equipments, the conical bottom heads used, usually has an apex angle of____________________?
0
Si percentage in silica refractories used in the walls of coke oven is about______________________?
A. 20°
B. 40°
C. 60°
D. 80°
0
Chrome magnesite bricks are_________________?
A. 45
B. 60
C. 80
D. 95
0
Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as ______________ percent?
A. Acidic in nature
B. Neutral in nature
C. Having higher RUL than silica bricks
D. Made by mixing 30% Chromite and 70% Periclase
0
Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant ?
A. 10
B. 15
C. 20
D. 30
0
Lower part of hot metal mixer are lined with _____________ bricks?
A. Soaking pits
B. Reheating furnace
C. L.D. converter
D. Rotary lime kiln
0
Bauxite calcining rotary kilns are lined with ________________ bricks?
A. Superduty fireclay
B. High alumina
C. Silica
D. Carborundum
0
Spalling of a refractory means its____________________?
A. Fireclay
B. Carbon
C. 85% alumina
D. Corundum