A Study on the Utilization of Yun Chun Andalusite as a Raw Material of High Alumina Refractories (II) -On the Concentration and Purification-

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J. Korean Ceram. Soc. > Volume 11(1); 1974 > Article

Journal of the Korean Ceramic Society 1974;11(1): 23.

고 알루미나질 내화물 원료로서 연천산 홍주석의 이용에 관한 연구(II) -홍주석의 선광 및 정제-

안영필, 최롱

한양대학교 요업공학과

A Study on the Utilization of Yun Chun Andalusite as a Raw Material of High Alumina Refractories (II) -On the Concentration and Purification-

ABSTRACT

1. Stage crushing by jaw crusher, steel mortar, and ball mill in turn has shown an inclination to increase the distribution of andalusite in coarse particles as well as to increase that of micas in fine particles. 2. Water elutriation was effective for the removal of muscovite and magnetic separation was effective for that of Mg-Fe micas such as biotte and chlorite. The process of concentration and that of purification are diagramatized respectively as follows: Concentration; Raw andalusite${lightarrow}$Crushing${lightarrow}$Screening${lightarrow}$Water elutriation${lightarrow}$Magnetic separation Purification; Concentrated andalusite${lightarrow}$Calcination${lightarrow}$Ball milling${lightarrow}$Screening${lightarrow}$Water elutriation${lightarrow}$Magnetic separation${lightarrow}$Acid washing.