Refractory Technology Resistance to slag attack of a refractory Depends on the nature of slag & refractory All of these Decreases at higher temperature Decreases, if defective joints & cracks exist in the refractory Depends on the nature of slag & refractory All of these Decreases at higher temperature Decreases, if defective joints & cracks exist in the refractory ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica between 1470°C and the melting point 1713°C ? Cristobalite Quartz Tridymite None of these Cristobalite Quartz Tridymite None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Thermal spalling mainly occurs during __________ of furnaces. Neither A nor B Cooling down Warming up Both A & B Neither A nor B Cooling down Warming up Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Alumina-graphite bricks are used for lining the Continuous casting systems Slide gate in teeming laddies Neither A nor B Both A & B Continuous casting systems Slide gate in teeming laddies Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Bauxite calcining rotary kilns are lined with __________ bricks. Fireclay Carbon 85% alumina Corundum Fireclay Carbon 85% alumina Corundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent. 55 90 80 70 55 90 80 70 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS