Refractory Technology Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of __________ °C. 70 570 770 270 70 570 770 270 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Bottom of basic open hearth furnace are constructed of Semi-silica bricks Porous fireclay bricks Silicon carbide bricks Dead burnt magnesite ramming mass Semi-silica bricks Porous fireclay bricks Silicon carbide bricks Dead burnt magnesite ramming mass ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite bricks have poor resistance to attack by __________ slag. Lime Acid Basic None of these Lime Acid Basic None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Si percentage in silica refractories used in the walls of coke oven is about 60 80 95 45 60 80 95 45 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hot metal runner in blast furnace are lined with __________ bricks. Silica Magnesite Fireclay Carborundum Silica Magnesite Fireclay Carborundum ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following is not a high alumina refractory material? Periclase Sillimanite Diaspore Kyanite Periclase Sillimanite Diaspore Kyanite ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS