Dolomite bricks have good resistance to attack by
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Mullite is chemically represented by
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Chrome magnesite is not used in the
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Magnesite bricks are used in those parts of furnaces, which are
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Silicon carbide refractories are used in the
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Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to
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To resist spalling tendency, a refractory should have
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Refractory materials are never used in the construction of
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Refractoriness under load (RUL) is the most important property for the refractory bricks
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Carbon refractories are exclusively used in the
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The largest consumer of refractories is the __________ industry.
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Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm2) is __________ °C.
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Which is the most stable crystalline form of silica at room temperature?
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Fireclay refractories
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Fireclay refractories have
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'Super refractories' are made from pure
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Pyrometric cone equivalent (PCE) of a refractory is the measure of its
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Grog addition in fireclay during brick manufacture is done to
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The maximum linear expansion of silica bricks during firing is about __________ percent.
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The highest melting pure oxide (m.p. > 3000°C) is
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