Refractory Technology Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, becaus of its Non-wetting characteristic High crushing strength High thermal conductivity None of these Non-wetting characteristic High crushing strength High thermal conductivity None of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Lower part of hot metal mixer are lined with __________ bricks. Superduty fireclay Carborundum High alumina Silica Superduty fireclay Carborundum High alumina Silica ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Periclase is MgCO₃ Amorphous magnesite ZrSO₄ Crystalline form of MgO MgCO₃ Amorphous magnesite ZrSO₄ Crystalline form of MgO ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology PCE value (Segar cone) of superduty refractories is more than 33, which is equivalent to a temperature of __________ °C. 1630 1730 1520 1670 1630 1730 1520 1670 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chromite refractories are used in Bottom of soaking pits Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other Neither A nor B Both A & B Bottom of soaking pits Between acid & basic linings in basic open hearth furnaces to prevent their chemical action with each other Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the Nuclear reactors, missiles & space crafts Insulation of high temperature furnaces Hearth of the blast furnace Roof of electric furnaces Nuclear reactors, missiles & space crafts Insulation of high temperature furnaces Hearth of the blast furnace Roof of electric furnaces ANSWER DOWNLOAD EXAMIANS APP
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