Thermal spalling mainly occurs during _____________ of furnaces?

Related Mcqs:

Bauxite calcining rotary kilns are lined with ________________ bricks?

A. Fireclay B. Carbon C. 85% alumina D. Corundum...

Zircon refractories have__________________?

A. Low co-efficient of expansion B. High RUL (1600°C) and refractoriness (> 2000°C) C. High spalling resistance D. All A., B. and C....

Panel test determines the _____________ of refractories?

A. Fusion point B. Spalling resistance C. Slag penetration resistance D. Refractoriness under load (RUL)...

Furnace atmosphere for softening temperature determination of refractories (in which Seger Cones are placed) should be __________________?

A. Oxidising B. Neutral C. Either A. or B. D. Neither A. nor B....

Fireclay bricks is not used for lining the__________________?

A. Cupola B. Gas producer C. Bottom of hot metal mixer D. Roof of open hearth furnace...