회중석광 개발을 위한 부유선별 특성연구
A Study on the Froth Flotation Characteristics for Development of Scheelite Ore
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초록
상동광산에서 채취한 회중석광을 대상으로 올레인산 포수제를 이용한 부유선별 특성 연구를 수행하였다. 포수제로 올레인산을 사용하는 경우 목적광물에 대한 선택성이 낮기 때문에, 맥석광물을 억제하기 위해서는 pH 조절 및 억제제의 선정이 매우 중요하다. 실험결과 주요 맥석 광물인 규산염 광물을 억제하고 회중석의 부유선별에 최적 조건을 부여하는 pH는 강 염기성 영역임을 확인하였다. Ca 이온을 함유한 맥석 광물들을 회중석과 분리하기 위하여, 입자크기 –200 mesh, 광액농도 35%solids, 교반속도 1,500 rpm에서 Na2CO3 3 kg/ton, Na2SiO3 4 kg/ton, 포수제(oleic acid) 250 g/ton 그리고 기포제(Lankropol-8300) 50 g/ton의 순으로 시약을 첨가하는 최적실험 조건을 도출하였다. 실 험결과, 최적실험 조건에서 WO3 품위와 회수율이 각각 67.6%와 88.16%인 결과를 얻어, 기존 대비 매우 우수한 회중 석 부유선별 기술을 개발하였다.
Abstract
Froth flotation characteristics study was carried out on Yeongwol Sangdong mine Scheelite ore in order to produce WO3 concentrate using oleic acid as collector. In case of using oleic acid, due to the low selectivity of the purpose mineral, the selection of the gangue mineral depressant and pH adjustment are important. As a result, it was confirmed that the optimum pH for providing optimum scheelite froth flotation characteristics while depressing silicate gauge minerals was in the alkalic region. In order to separate the Ca ion containing minerals and scheelite, -200 mesh ground sample, 35% solid in pulp density, 1,500 rpm and the addition of reagents in sequence such as Na2CO3 3 kg/ton, Na2SiO3 4 kg/ton, Oleic acid 250 g/ton, Lankropol-8,300 50 g/ton, respectively. As a result, final concentrate was obtained WO3 grade of 67.6%WO3 with a recovery of 88.16%.
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