Refractory Technology Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns. 2200 2400 1800 2700 2200 2400 1800 2700 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Sillimanite is a __________ refractory. Basic Neutral High alumina Insulating Basic Neutral High alumina Insulating ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Zircon refractories have High spalling resistance High RUL (1600°C) and refractoriness (> 2000°C) All of these Low co-efficient of expansion High spalling resistance High RUL (1600°C) and refractoriness (> 2000°C) All of these Low co-efficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Silica refractories Have lower thermal conductivity than fireclay bricks Crack when subjected to sudden change of temperature Can not be used in the dome of hot blast stoves All of these Have lower thermal conductivity than fireclay bricks Crack when subjected to sudden change of temperature Can not be used in the dome of hot blast stoves All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Cermets are All of these Composite material containing both ceramic & metallic constituents Used in space vehicles, missiles & nuclear energy plants Having high strength & resistance to high temperature All of these Composite material containing both ceramic & metallic constituents Used in space vehicles, missiles & nuclear energy plants Having high strength & resistance to high temperature ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Segar cones are used for the determination of __________ of refractories. Resistance to slag attack Softening temperature Spalling resistance Electrical conductivity Resistance to slag attack Softening temperature Spalling resistance Electrical conductivity ANSWER DOWNLOAD EXAMIANS APP
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