Refractory Technology Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the Washing action of metal Neither A nor B Corrosion by layer of slag Both A & B Washing action of metal Neither A nor B Corrosion by layer of slag Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks. Dolomite Silica Very low alumina Fireclay Dolomite Silica Very low alumina Fireclay ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Hollow refractory bricks are made by Extrusion Pressing/machine moulding Hand moulding Slip casting Extrusion Pressing/machine moulding Hand moulding Slip casting ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories used in/for __________ should have low thermal conductivity. Coke ovens Muffle furnaces Insulation Regenerators Coke ovens Muffle furnaces Insulation Regenerators ANSWER DOWNLOAD EXAMIANS APP
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. 2700 1800 2200 2400 2700 1800 2200 2400 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology High alumina refractory compared to fireclay bricks have Less resistance to slag attack High resistance to thermal shock and creep Less load bearing capacity Low refractoriness Less resistance to slag attack High resistance to thermal shock and creep Less load bearing capacity Low refractoriness ANSWER DOWNLOAD EXAMIANS APP
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