Al4C3 METHOD FOR REGENERATING REFRACTORIES CONTAINING Al4C3

摘要

A method for regenerating an Al ₄ C ₃ -containing refractory is disclosed. One aspect of the reproducing method of the Al ₄ C ₃ containing refractory of the present invention may include the steps of preparing a refractory containing Al ₄ C _3; Heating the prepared refractory material to form a crack in the refractory material so that high-pressure steam can penetrate through the refractory material; Introducing high-pressure steam into the refractory having cracks formed therein to cause differentiation by volumetric expansion according to the following formula (1); Crushing the refractory having the differentiation; And removing fine powder having a particle size of less than 0.3 mm among the refractory materials, further comprising the step of decarburizing the refractory material from which the fine powder has been removed. [Chemical Formula 1] Al ₄ C ₃ (s) + 12 H ₂ O (1)? 4Al (OH) ₃ (s) + 3CH ₄ (g)