Hamad Refractory Technology 31/03/2021 A. Crystalline form of MgO B. MgCO3 C. ZrSO4 D. Amorphous magnesite Related Mcqs: Chrome magnesite bricks are_________________?A. Acidic in nature B. Neutral in nature C. Having higher RUL than silica bricks D. Made by mixing 30% Chromite and 70% Periclase... Which one expands on heating ?A. Silica bricks B. Fireclay bricks C. Both A. & B. D. Neither A. nor B.... Quartz is___________________?A. Stable form of silica upto 870°C B. Converted to Tridymite on firing between 870 to 1470°C C. Transformed to Cristobalite on heating above 1470°C D. All A., B. and C.... Which is not a high alumina refractory ?A. Mullite B. Corundum C. Bauxite D. Dolomite... Silica bricks are never used for lining the____________________?A. Beehive coke ovens B. By-product coke ovens C. Dome of blast furnace stoves D. Roof of open hearth furnace...
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