Alumina-graphite bricks are used for lining the ____________________?

A. Are stored under controlled temperature & humidity to avoid hydration
B. Are used in outer lining of L.D. converters
C. Have poorer hydration resistance than pitch bonded bricks
D. All A., B. and C.

A. Carbides
B. Oxides
C. Borides
D. Nitrides

A. 5-10
B. 10-25
C. 25-35
D. 35-50

A. High porosity
B. Low thermal conductivity
C. Both A. and B.
D. Neither A. not B.

A. Poor resistance to the penetration of molten slag, metal & flue gases
B. Poor heat conductivity & low strength
C. Better thermal spalling resistance
D. All A., B. and C.

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