Refractory Technology Which of the following bricks has the most close values of RUL and PCE? Tar dolomite bricks Fireclay bricks Silica bricks High alumina bricks Tar dolomite bricks Fireclay bricks Silica bricks High alumina bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. Preheating Cooling All of these Burning Preheating Cooling All of these Burning ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zirconia refractory Can not be used as an insulator Does not react with basic slags Is produced from baddeleyite Has poor electrical conductivity at high temperature Can not be used as an insulator Does not react with basic slags Is produced from baddeleyite Has poor electrical conductivity at high temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is not a natural insulating material? Asbestos Diatomaceous earth/kieselgur None of these Vermiculite Asbestos Diatomaceous earth/kieselgur None of these Vermiculite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Graphite or carbon refractories Exhibit high shrinkage on thermal treatment Are not resistant to corrosion by slag Exihibit wetting characteristics Should be used in neutral or reducing atmosphere Exhibit high shrinkage on thermal treatment Are not resistant to corrosion by slag Exihibit wetting characteristics Should be used in neutral or reducing atmosphere ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The maximum linear expansion of silica bricks during firing is about __________ percent. 0.5 3.5 1 2 0.5 3.5 1 2 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS