Roof of a basic open hearth furnace is lined with ______________ bricks?

Related Mcqs:

Porosity is induced in insulating refractories by adding________________?

A. Powdered naphthalene B. Ammonium chloride/sulphate C. Calcium phosphate D. All A., B. and C....

Chromite refractories_____________________?

A. Are bonded with lime and clay B. (Free from silica) have better thermal fatigue resistance than silica and magnesite refractories. C. Are resistant to basic slag D. All A., B. and C....

Electrical resistor bars are made of _______________?

A. Silicon carbide B. Alumina C. Zirconia D. Graphite...

Tar dolomite bricks are used in the_________________?

A. Basic Bessemer converter B. Basic open hearth furnace C. Electric furnaces D. All A., B. and C....

Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for _____________ bricks?

A. Fireclay B. Silica C. Dolomite D. Very low alumina...