황기엽 전용원 이동휘 2024-01-22T02:40:01Z 2024-01-22T02:40:01Z 2022-01-10 1973-09 https://pubs.kist.re.kr/handle/201004/148369 Korean 저품위 형석광의 부선에 관한 연구 A study on the recovery of high grade fluorite concentrate from low grade ores (report I) Article 2 대한광산학회지, v.10, no.3, pp.131 - 137 대한광산학회지 10 3 131 137 N other recovery high grade concentrate sodium silicate oleic acid mineralogical study