Refractory Technology Bottom of basic open hearth furnace are constructed of Porous fireclay bricks Semi-silica bricks Silicon carbide bricks Dead burnt magnesite ramming mass Porous fireclay bricks Semi-silica bricks Silicon carbide bricks Dead burnt magnesite ramming mass ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The highest melting pure oxide (m.p. > 3000°C) is Thoria Beryllia Alumina Zirconia Thoria Beryllia Alumina Zirconia ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity). Fireclay Chromite Carborundum Graphite Fireclay Chromite Carborundum Graphite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture? Chemically prepared foam Cork Sand Saw dust Chemically prepared foam Cork Sand Saw dust ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone. Burning Preheating Cooling All of these Burning Preheating Cooling All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is a neutral refractory? Silica Magnesia Magnesite chrome Graphite Silica Magnesia Magnesite chrome Graphite ANSWER DOWNLOAD EXAMIANS APP
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