Refractory Technology 10 to 30% magnesite is added to chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the __________ of chromite. Refractoriness Crushing strength Spalling resistance Resistance to slag Refractoriness Crushing strength Spalling resistance Resistance to slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Resistance to slag attack of a refractory Decreases, if defective joints & cracks exist in the refractory Depends on the nature of slag & refractory Decreases at higher temperature All of these Decreases, if defective joints & cracks exist in the refractory Depends on the nature of slag & refractory Decreases at higher temperature All of these ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology An indication of degree of firing in silica brick is its None of these RUL Specific gravity Fusion point None of these RUL Specific gravity Fusion point ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology With increase in the alumina content, the refractoriness of high alumina refractories Increases Decreases Remains same May increase or decrease Increases Decreases Remains same May increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Chemically, mullite refractories is Al2O₃ 3Al2O₃.2SiO₂ ThO₂ ZrSO₄ Al2O₃ 3Al2O₃.2SiO₂ ThO₂ ZrSO₄ ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Refractory castables are used for All of these Minimising the number of joints in the structure Producing monolithic linings Patch work All of these Minimising the number of joints in the structure Producing monolithic linings Patch work ANSWER DOWNLOAD EXAMIANS APP
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