Refractory Technology

High density refractory bricks have lower__________________?

Byadmin March 8, 2019August 26, 2021

High density refractory bricks have lower__________________?

A. Spalling resistance
B. Thermal conductivity
C. Fusion point
D. Slag penetration resistance

Refractory Technology

Fireclay bricks are used in the__________________?

Fireclay bricks are used in the__________________?

A. Coke ovens regenerator
B. Outer lining of L.D. converter
C. Hearth bottom of blast furnace
D. Coke oven walls

Read More Fireclay bricks are used in the__________________?
Refractory Technology

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°

Read More In chemical process equipments, the conical bottom heads used, usually has an apex angle of____________________?
Refractory Technology

Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of______________?

Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of______________?

A. Segar cones
B. Muffles for muffle furnaces
C. Insulating bricks
D. Crucibles used for melting of high purity metals

Read More Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of______________?
Refractory Technology

Cold crushing strength of fireclay bricks is about ______________ kgf/cm2?

Cold crushing strength of fireclay bricks is about ______________ kgf/cm2?

A. 50-100
B. 100-150
C. 200-400
D. 500-1000

Read More Cold crushing strength of fireclay bricks is about ______________ kgf/cm2?
Refractory Technology

With increase in the density of silica refractories, its_______________?

With increase in the density of silica refractories, its_______________?

A. Resistance to slag attack increases
B. Spalling resistance reduces
C. Both A. and B.
D. Neither A. nor B.

Read More With increase in the density of silica refractories, its_______________?
Refractory Technology

Which is not a natural insulating material ?

Which is not a natural insulating material ?

A. Diatomaceous earth/kieselgur
B. Asbestos
C. Vermiculite
D. None of these

Read More Which is not a natural insulating material ?

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