몽골 에르덴 솜 주석광 개발을 위한 비중 선별 시스템 연구
Research on the Gravity Separation System for the Development of Erdene Sum Tin (Sn) Mineral in Mongolia
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초록
본 연구에서는 몽골 내 위치한 주석(Sn) 광산에서 수령한 시료를 대상으로 고품위 정광 개발을 위한 선별 시스템 연구를 수행하였다. 시료 내 포함된 주석을 함유하고 있는 광물인 주석석을 효율적으로 분리하기 위하여 Shaking table을 이용한 비중 선별을 수행하였다. 비중 선별 시 투입 하는 시료 입자의 크기, Shaking table 반면의 기울기 경사각, 시료와 함께 투입하는 공급수 유량을 주요 변수로 실험을 수행하였다. Rougher 비중 선별에서는 정광의 Sn품위와 회수율이 24.32%, 65.99% 인 것을 확인하였다. 최종 정광의 품위와 회수율을 향상시키기 위하여 비중 선별을 여러 단계에 걸쳐 적용시켜 선별 공정을 설계하였다. 그 결과, Sn품위와 회수율이 60.30%, 76.67%인 최종 정광을 회수할 수 있었다.
Abstract
In this study, a separation system for recovering high-grade concentrate was developed using samples obtained from a Sn mine in Mongolia. Cassiterite containing Sn in the sample was efficiently separated by performing gravity separation using a shaking table. The main experimental variables were the particle size of the sample, the inclination angle of the shaking table, and the flow rate of the feed water injected into the sample. In the rougher gravity separation, a concentrate with 24.32% Sn grade was obtained at a recovery of 65.99%. A separation process was designed by applying gravity separation in several stages to improve the grade and recovery rate of the final concentrate. Consequently, a final concentrate with a 60.30% Sn grade was obtained at a recovery of 76.67%.
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