Refractory Technology

The largest consumer of refractories is the _______________ industry?

Byadmin March 8, 2019August 26, 2021

The largest consumer of refractories is the _______________ industry?

A. Cement
B. Metallurgical
C. Fertiliser
D. Power

Refractory Technology

Porosity of silica bricks varies from ______________ percent?

Porosity of silica bricks varies from ______________ percent?

A. 5 to 10
B. 20 to 30
C. 45 to 60
D. 60 to 75

Read More Porosity of silica bricks varies from ______________ percent?
Refractory Technology

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

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.

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

Fusion temperature of pure silica (SiO2) is _______________ °C?

Fusion temperature of pure silica (SiO2) is _______________ °C?

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

Read More Fusion temperature of pure silica (SiO2) is _______________ °C?
Refractory Technology

Thermal diffusivity of a refractory brick is high, when its ____________ is high?

Thermal diffusivity of a refractory brick is high, when its ____________ is high?

A. Density
B. Specific heat
C. Thermal conductivity
D. None of these

Read More Thermal diffusivity of a refractory brick is high, when its ____________ is high?
Refractory Technology

Highest melting (m.p = 3070°C) oxide refractory is__________________?

Highest melting (m.p = 3070°C) oxide refractory is__________________?

A. Alumina
B. Thoria
C. Zirconia
D. Magnesia

Read More Highest melting (m.p = 3070°C) oxide refractory is__________________?
Refractory Technology

Which is required in an insulating refractory ?

Which is required in an insulating refractory ?

A. High thermal conductivity
B. Low porosity
C. Both A. and B.
D. Neither A. nor B.

Read More Which is required in an insulating refractory ?

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