Refractory Technology Periclase is MgCO₃ Crystalline form of MgO Amorphous magnesite ZrSO₄ MgCO₃ Crystalline form of MgO Amorphous magnesite ZrSO₄ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay refractories have Very high cost Tendency to expand unduly high during firing Low co-efficient of thermal expansion Poor thermal spalling resistance Very high cost Tendency to expand unduly high during firing Low co-efficient of thermal expansion Poor thermal spalling resistance ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Tar bonded dolomite bricks Are stored under controlled temperature & humidity to avoid hydration All of these Are used in outer lining of L.D. converters Have poorer hydration resistance than pitch bonded bricks Are stored under controlled temperature & humidity to avoid hydration All of these Are used in outer lining of L.D. converters Have poorer hydration resistance than pitch bonded bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent. 55 70 80 90 55 70 80 90 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following has the lowest electrical resistivity? Graphite Alumina Fireclay Zircon Graphite Alumina Fireclay Zircon ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite refractories are generally not used in the Open hearth furnace Steel melting furnace Electric furnace walls Burning zone of cement kilns Open hearth furnace Steel melting furnace Electric furnace walls Burning zone of cement kilns ANSWER DOWNLOAD EXAMIANS APP
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