Inclined dust zone is the most easily damaged part in CDQ chamber.The life of the refractories in this part can not reach the design working life,which results in shut down for overhaul and has become an important factor that hinders the development of CDQ chamber.Using high-grade new type refractory silicon carbide products can significantly prolong the life of refractories in vulnerable parts.Through analysis,it is known that although the cost of the new material is higher than the ordinary refractories,the service life of the new material is significantly extended,and during the whole life cycle of the refractories,the overall cost can be reduced.

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