Refractory Technology Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent. 7-12 14-20 5-7 2-3 7-12 14-20 5-7 2-3 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Magnesite chrome refractories Are not at all resistant to the corrosive action of iron oxide Have very low thermal co-efficient of expansion Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have better spalling resistance than chrome magnesite refractories Are not at all resistant to the corrosive action of iron oxide Have very low thermal co-efficient of expansion Have very low (50 kg/cm² ) cold crushing strength (C.C.S.), and can not be used in metalcase form Have better spalling resistance than chrome magnesite refractories ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Fireclay bricks are never used in the Lead blast furnace Zinc roaster Coke oven walls Beehive oven Lead blast furnace Zinc roaster Coke oven walls Beehive oven ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractories used in/for __________ should have low thermal conductivity. Regenerators Insulation Coke ovens Muffle furnaces Regenerators Insulation Coke ovens Muffle furnaces ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spray test determines the __________ of refractories. Resistance to CO attack RUL Resistance to slag penetration Permanent linear change Resistance to CO attack RUL Resistance to slag penetration Permanent linear change ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology silicon carbide refractories have very low None of these Resistance to thermal shock Thermal conductivity Refractoriness (< 1700°C) None of these Resistance to thermal shock Thermal conductivity Refractoriness (< 1700°C) ANSWER DOWNLOAD EXAMIANS APP
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