Refractory Technology Bottom of basic open hearth furnace are constructed of Dead burnt magnesite ramming mass Silicon carbide bricks Semi-silica bricks Porous fireclay bricks Dead burnt magnesite ramming mass Silicon carbide bricks Semi-silica bricks Porous fireclay bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of Siliceous fireclay Silicon carbide Corrundum Fireclay Siliceous fireclay Silicon carbide Corrundum Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the stable form of silica upto 1470°C ? None of these Quartz Cristobalite Tridymite None of these Quartz Cristobalite Tridymite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness/fusion points of 'superduty' refractories is __________ °C. > 1730 1630-1670 1520-1630 > 2000 > 1730 1630-1670 1520-1630 > 2000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity of silica bricks varies from __________ percent. 60 to 75 5 to 10 20 to 30 45 to 60 60 to 75 5 to 10 20 to 30 45 to 60 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not an alumino-silicate refractory? Fireclay bricks High alumina bricks Tar dolomite bricks Mullite bricks Fireclay bricks High alumina bricks Tar dolomite bricks Mullite bricks ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS