Refractoriness under load (rul), Chemical Engineering

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Refractoriness under load (RUL): This represents the resistance of a refractory material to the combined efforts of heat and load. RUL is the temperature at which the deformation begins and at which at least 10% deformation takes place. It is necessary that refractory material must also possess very high mechanical strength even at operating temperature to bear the maximum possible load without damage.

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