이동휘 2024-01-22T02:12:38Z 2024-01-22T02:12:38Z 2022-01-10 1982-03 https://pubs.kist.re.kr/handle/201004/148143 Korean 중석광의 부유선광 Flotation of tungsten ores. Article 2 대한광산학회지, v.19, no.1, pp.49 - 53 대한광산학회지 19 1 49 53 N other tungsten ores ammonium paratungstate jaw crusher pulp density slime radio activity