Refractory Technology Semi-silica bricks compared to silica bricks have Less fusion point Better spalling resistance Neither A nor B Both A & B Less fusion point Better spalling resistance Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Firing of refractory brick is done to Form ceramic bonds necessary for development of high crushing strength in the finished product All of these Develop stable mineral forms in them Dehydrate the dried refractory Form ceramic bonds necessary for development of high crushing strength in the finished product All of these Develop stable mineral forms in them Dehydrate the dried refractory ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the Neither A nor B Washing action of metal Both A & B Corrosion by layer of slag Neither A nor B Washing action of metal Both A & B Corrosion by layer of slag ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Insulating refractories should have Low thermal conductivity High porosity Neither A nor B Both A & B Low thermal conductivity High porosity Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Which of the following is not an acidic refractory? Magnesia bricks Fireclay bricks Bauxite bricks Silica bricks Magnesia bricks Fireclay bricks Bauxite bricks Silica bricks ANSWER DOWNLOAD EXAMIANS APP
Refractory Technology Spray test determines the __________ of refractories. RUL Resistance to CO attack Resistance to slag penetration Permanent linear change RUL Resistance to CO attack Resistance to slag penetration Permanent linear change ANSWER DOWNLOAD EXAMIANS APP
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