Category: Refractory Technology

A. Segar cones
B. Muffles for muffle furnaces
C. Insulating bricks
D. Crucibles used for melting of high purity metals

A. High insulating properties
B. Low heat capacity
C. Low thermal conductivity
D. Greater strength

A. 1350
B. 1715
C. 2570
D. 2800

A. Firebrick
B. Sillimanite
C. Semi-silica
D. Aluminous firebrick

A. Acidic refractory
B. Neutral refractory
C. Basic refractory
D. Fired at a temperature of 600°C only

A. Muffle furnace
B. Zinc smelting furnace
C. Ceramic recuperators
D. All A., B. and C.

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

A. Slip casting
B. Hand moulding
C. pressing/machine moulding
D. Extrusion

A. Insulating refractories used in place of regular refractory bricks are usually called light weight
refractories, and they have similar composition as heavy bricks
B. Graphite refractories are also called plumbago refractories
C. Superduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28
D. Calcined magnesite is also called dead burnt magnesite

A. Silica bricks
B. Fireclay bricks
C. Bauxite bricks
D. Magnesia bricks