Which is not a high alumina refractory ?

Related Mcqs:

In chemical process equipments, the conical bottom heads used, usually has an apex angle of____________________?

A. 20° B. 40° C. 60° D. 80°...

Zirconia refractory_________________?

A. Does not react with basic slags B. Is produced from baddeleyite C. Cannot be used as an insulator D. Has poor electrical conductivity at high temperature...

Chrome magnesite brick is not used for lining the___________________?

A. Hearth of soaking pits B. Bottom hearth of reheating furnace C. Coke oven regenerator D. Burning zone of limestone rotary kilns...

Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the_________________?

A. Washing action of metal B. Corrosion by layer of slag C. Both A. & B. D. Neither A. nor B....

Cold crushing strength of ordinary fireclay brick is about 950 kg/cm2. On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as ______________ kg/cm2?

A. 450 B. 250 C. 150 D. 65...