Chemical Engineering - Refractory Technology - Discussion


Pick out the wrong statement.

[A]. Refractories used in muffle furnace should have low thermal conductivity.
[B]. The electrical resistivity of refractories drops rapidly with rise in temperature.
[C]. For reducing spalling tendency, the refractory should be well fired and its porosity should be more.
[D]. Refractoriness under load (RUL) of a refractory is always less than its refractoriness.

Answer: Option A


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