Refractoriness/fusion points of ‘Superduty’ refractories is _______________ °C?

Related Mcqs:

Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material ?

A. Aluminium phosphate B. Water C. Lime D. Plaster of Paris...

Which is the stable form of silica below 870°C ?

A. Tridymite B. Cristobalite C. Quartz D. None of these...

The main raw material for manufacture of silicon carbide refractories is_________________?

A. Corundum B. Carborundum C. Bauxite D. Periclase...

Natural silica___________________?

A. Mainly contains quartz B. Is not stable at high temperature C. Transforms to other allotropic forms i.e. Tridymite and Cristobalite involving very high volume changes D. All A., B. and C....

With decrease in porosity, the ______________ of the refractories decreases?

A. Strength B. Thermal conductivity C. Spalling resistance D. None of these...