Refractory Technology __________ bricks are used in the burning zone of a cement rotary kiln. Silicon carbide High alumina Thoria Fireclay Silicon carbide High alumina Thoria Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Maximum alumina content in high alumina refractory can be as high as __________ percent. 90 30 50 70 90 30 50 70 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory bricks having lower porosity have Low heat capacity Greater strength Low thermal conductivity High insulating properties Low heat capacity Greater strength Low thermal conductivity High insulating properties ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 'Spinel', a refractory mineral is chemically represented as MgAl2O₃.2H₂O MgSO₄ MgAl2O₄ MgAl2O₃ MgAl2O₃.2H₂O MgSO₄ MgAl2O₄ MgAl2O₃ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Grog addition in fireclay during brick manufacture is done to Enhance the strength of fired refractories Reduce its shrinkage on heating Impart greater spalling resistance All of these Enhance the strength of fired refractories Reduce its shrinkage on heating Impart greater spalling resistance All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Crushing strength of a refractory Is unaffected with change in service temperature Decreases with rise in service temperature Increases with rise in service temperature Decreases with increase in porosity Is unaffected with change in service temperature Decreases with rise in service temperature Increases with rise in service temperature Decreases with increase in porosity ANSWER DOWNLOAD EXAMIANS APP
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