Synthesis of Cordierite and Preparation of Refractory Setter from Domestic Raw Materials

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J. Korean Ceram. Soc. > Volume 12(4); 1975 > Article

Journal of the Korean Ceramic Society 1975;12(4): 19.

Cordierite의 합성 및 내화갑제조에 관한 연구

지응업, 최상욱, 김광호

인하대학교 요업공학과

Synthesis of Cordierite and Preparation of Refractory Setter from Domestic Raw Materials

ABSTRACT

In order to obtain the superior refractory setter having better spalling resistance, cordierite was synthesized from domestic raw materials. Raw mixtures were fired between 125$0^{circ}C$ and 140$0^{circ}C$, and qualitative determination of crytallization was investigated by x-ray diffraction analysis. The results obtained are as follows; 1) The optimum batch composition of synthesized cordierite is 80.5% of Hadong kaolin (pink), 14% of Kyulsung tromolite talc and 5.5% of magnesia clinker, and the firing temperature is 1375$^{circ}C$. 2) The composition of the refractory setter which exhibits the best values for the thermal properties is 40% of synthesized cordierite, 30% of kaolin chamotte(contains more than 60% of mullite), and 30% of Japanese clay. 3) The optimum particle size distribution of ternary mixture consists of 50% of coarse articles (3.327-1.168mm), 25% of intermediate particles (1.168-0.208mm) and 25% of fine particles (0.208-0.000mm).