Lower part of hot metal mixer are lined with _____________ bricks?
A. Superduty fireclay
B. High alumina
C. Silica
D. Carborundum
Refractory Technology
Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant ?
Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant ?
A. Soaking pits
B. Reheating furnace
C. L.D. converter
D. Rotary lime kiln
Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as ______________ percent?
Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as ______________ percent?
A. 10
B. 15
C. 20
D. 30
Chrome magnesite bricks are_________________?
Chrome magnesite bricks are_________________?
A. Acidic in nature
B. Neutral in nature
C. Having higher RUL than silica bricks
D. Made by mixing 30% Chromite and 70% Periclase
Si percentage in silica refractories used in the walls of coke oven is about______________________?
Si percentage in silica refractories used in the walls of coke oven is about______________________?
A. 45
B. 60
C. 80
D. 95
In chemical process equipments, the conical bottom heads used, usually has an apex angle of____________________?
In chemical process equipments, the conical bottom heads used, usually has an apex angle of____________________?
A. 20°
B. 40°
C. 60°
D. 80°
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about ______________ percent?
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about ______________ percent?
A. 5
B. 20
C. 35
D. 55