An ideal refractory should have high
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Chemical Engineering · all questionsRefractory Technology
Refractory Technology
practice.
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Which is the stable form of silica between 1470°C and the melting point 1713°C ?
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Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be
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Porosity of silica bricks varies from __________ percent.
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Maximum alumina content in high alumina refractory can be as high as __________ percent.
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Maximum water percentage in refractory mix meant for hand moulding may be as high as __________ percent.
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Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent.
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Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent.
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Periclase refractory contains mainly
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In panel test for spalling resistance, the average face temperature of panel assembly is maintained at __________ °C for 24 hours.
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Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory
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Insulating refractories should have
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Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the
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Basic bricks are not made of
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Alumina-graphite bricks are used for lining the
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Firing temperature of magnesite bricks is about __________ °C.
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Maximum safe working temperature for fireclay bricks is about __________ °C.
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Chemically, mullite refractories is
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Carbon refractories
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Carbon refractory blocks
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