Refractory Technology Which property of refractories is the most important for top section of the blast furnace? Stability of volume at high temperature Resistance to corrosion by slag Resistance to slag peneration Resistance to abrasion Stability of volume at high temperature Resistance to corrosion by slag Resistance to slag peneration Resistance to abrasion ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Vacuum steel degassing units are lined with Silica bricks Graphite blocks Low duty firebricks High alumina bricks Silica bricks Graphite blocks Low duty firebricks High alumina bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Conversion of silica mineral to cristobalite is accompanied by reduction in its Both A & B Neither A nor B Volume Specific gravity Both A & B Neither A nor B Volume Specific gravity ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chrome magnesite brick is not used for lining the Bottom hearth of reheating furnace Coke oven regenerator Hearth of soaking pits Burning zone of limestone rotary kilns Bottom hearth of reheating furnace Coke oven regenerator Hearth of soaking pits Burning zone of limestone rotary kilns ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology The maximum linear expansion of silica bricks during firing is about __________ percent. 0.5 2 3.5 1 0.5 2 3.5 1 ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Tar bonded dolomite bricks Are stored under controlled temperature & humidity to avoid hydration All of these Have poorer hydration resistance than pitch bonded bricks Are used in outer lining of L.D. converters Are stored under controlled temperature & humidity to avoid hydration All of these Have poorer hydration resistance than pitch bonded bricks Are used in outer lining of L.D. converters ANSWER DOWNLOAD EXAMIANS APP
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