EAF roof damage mechanism and applicated refractory materials

It is mad of high temperature' electrical calcined anthracite as main a material, medium temperate pitch as binder, through forming, high temperature baking, final precision machining. It features good thermal conductivity and alkaline resistance. It is economic and practical, and mainly applied for blast furnace bottom.

EAF Roof is a spherical structure with electrode hole and smoke output hole. Out part is called main roof, and the mid part is called small roof (also called triangle). When loading raw material, the roof can be removed. EAF process is extremely complex, triangle preform conditions are very harsh. Mainly by the electrode arc radiation, thermal shock, high-speed air stream of molten steel ....................

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