Spalling Resistance Of A Refractory Cannot Be Increased By ___________________

A. Increasing its porosity
B. Using a coarser grog during its manufacture
C. Decreasing its thermal co-efficient of expansion
D. Making it denser

A. 2-3 B. 5-7 C. 7-12 D. 14-20...

A. Silica bricks B. Fireclay bricks C. Both A. & B. D. Neither A. nor B....

A. Rotary kilns B. Tunnel kilns C. Sun D. None of these...

A. Coke oven walls B. Beehive coke ovens C. Dome and upper portion of B.F. stoves D. Open hearth furnace roof...

A. Silica B. Periclase C. Lime D. None of these...

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