Refractory Technology Firing temperature of magnesite bricks is about __________ °C. 1000-1200 1600-1800 2400-2600 800-1000 1000-1200 1600-1800 2400-2600 800-1000 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which one contains maximum percentage of Al2O₃ ? Magnesite Firebrick Sillimanite Aluminous firebrick Magnesite Firebrick Sillimanite Aluminous firebrick ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to Fusion under load Thermal spalling Slag attack CO attack Fusion under load Thermal spalling Slag attack CO attack ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Grog Iscrushed firebrick All of these Contains both alumina and silica Is a non-plastic material Iscrushed firebrick All of these Contains both alumina and silica Is a non-plastic material 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 Hearth of the blast furnace Insulation of high temperature furnaces Nuclear reactors, missiles & space crafts Roof of electric furnaces Hearth of the blast furnace Insulation of high temperature furnaces Nuclear reactors, missiles & space crafts Roof of electric furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology 10 to 30% magnesite is added to chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the __________ of chromite. Crushing strength Resistance to slag Refractoriness Spalling resistance Crushing strength Resistance to slag Refractoriness Spalling resistance ANSWER DOWNLOAD EXAMIANS APP
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