Refractory Technology Silica bricks are never used for lining the By-product coke ovens Dome of blast furnace stoves Roof of open hearth furnace Beehive coke ovens By-product coke ovens Dome of blast furnace stoves Roof of open hearth furnace Beehive coke ovens ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology __________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold. Non-wetting characteristics Low porosity High thermal conductivity High density Non-wetting characteristics Low porosity High thermal conductivity High density ANSWER DOWNLOAD EXAMIANS APP
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 Dolomite bricks have good resistance to attack by Molten steel Iron oxide None of these Lime slag Molten steel Iron oxide None of these Lime slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which is the most stable crystalline form of silica at room temperature? Tridymite None of these Quartz Cristobalite Tridymite None of these Quartz Cristobalite ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Porosity is induced in insulating refractories by adding All of these Powdered naphthalene Calcium phosphate Ammonium chloride/sulphate All of these Powdered naphthalene Calcium phosphate Ammonium chloride/sulphate ANSWER DOWNLOAD EXAMIANS APP
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