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Refractory Technology

Refractory Technology
Carbon refractories have very high

Wetting characteristics
Both B and C
Refractoriness
Thermal conductivity

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Refractory Technology
Porosity of fireclay refractories is __________ percent.

35-50
44129
25-35
43961

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Refractory Technology
Mixing of ground refractory material and water is done in a __________ mill.

Ball
Pug
Tube
Rod

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Refractory Technology
Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be

Neither A nor B
Oxidising
Neutral
Either A or B

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Refractory Technology
Carborundum used for making crucibles for melting non-ferrous metals is chemically

Zirconium sulphate
Silicon nitride
Silicon carbide
Crystalline magnesia

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Refractory Technology
Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the

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

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