Refractory Technology
Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant?

L.D. converter
Ceheating furnace
Rotary lime kiln
Soaking pits

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Refractory Technology
Natural silica

Is not stable at high temperature
Transforms to other allotropic forms i.e tridymite and cristoballite involving very high volume changes
Mainly contains quartz
All of these

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Refractory Technology
Cermets are

Used in space vehicles, missiles & nuclear energy plants
All of these
Having high strength & resistance to high temperature
Composite material containing both ceramic & metallic constituents

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