Highest melting (m.p = 3070°C) oxide refractory is
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Refractory Technology
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Fusion point of an acidic refractory material is
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Which of the following is not a high alumina refractory material?
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Magnesite refractories are generally not used in the
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Silica bricks are never used for lining the
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Cold crushing strength of ordinary fireclay brick is about 950 kg/cm2. On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as __________ kg/cm2.
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Magnesite chrome bricks are used in the
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Which of the following bricks has the most close values of RUL and PCE?
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__________ is the measure of the strength of refractory under the combined effect of temperature & load.
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An indication of degree of firing in silica brick is its
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Hot face insulating linings of high purity alumina fused mullite are used, where
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With increase in the alumina content in firebricks, its fusion point (refractoriness)
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Which is required in an insulating refractory?
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Mixing of ground refractory material and water is done in a __________ mill.
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Roof of a basic electric furnace is made of __________ bricks.
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Which of the following is not a neutral refractory?
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Which is not an acidic refractory?
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Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of
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Outer combustion chamber of blast furnace stove is lined with __________ bricks.
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Hot metal runner in blast furnace are lined with __________ bricks.
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