J. Korean Ceram. Soc. > Volume 27(6); 1990 > Article
 Journal of the Korean Ceramic Society 1990;27(6): 769.
 화순산 경질점토의 정제에 관한 연구 박금철, 장영재 한양대학교 대학원 무기재료공학과 Study on Refinement of Hwasun Flint Clay ABSTRACT This study deals with the refinement of Hwasun flint clay by grinding, classifying, magnetic separation and acid treatment in sequence. Results are as follows ; 1. Fine kaolinite particles of median size in the range of 4.8 and 1.7$mutextrm{m}$ was collected, with the yield of 87.4% by dry grinding and classifying process. 2. It is proven that the iron bearing are of Hwasun flint clay is mainly consisted of chloritoid and iron rich muscovite. 3. As the results of the high gradient magnetic separation, the bleaching and iron removal degree of the dry grinding and classifying sample was 4-58% and 5-62% respectively. 4. As the results of the acid treatment, bleaching and weight loss degree of the dry grinding and classifying sample was reduced to 16-82% and 6-29% respectively.
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