... . 3. Physicochemical stability. 4. High quality refractory raw materials. Calcined kaolin,Kaolin clayFeatures and advantages:1. High refractoriness.2. Physicochemical stability.3 ... 0.51.52.02.53.03.54.04.5 Applications:Calcined kaolin is mainly used for manufacturing high-quality refractory products, ... , crucibles, ceramic fiber, precision casting sand, ceramics products, etc. Calcined kaolin