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홍천지구 저품위 철광에 대한 선광시험 : 홍천철광 Hongchon Mine
조명승,정인복,황선국,고원식 대한금속재료학회(대한금속학회) 1968 대한금속·재료학회지 Vol.6 No.2
Mining Research Center is making a study to establish and develop a practical ore-dressing procedure with low grade iron ore in Hongchon area and the Report 1, Jaun iron mine, issued on October 20th, 1967. Now, Government is planning to exploit the relatively high grade iron ore as selective mining at Hongchon mine which is estimated about 3,200,000 ton containing around 32% Fe prior to regular mine exploitation in this area. Hereby, a beneficiation study was mainly carried out with the composite sample taken from 4 outcrops at Hongchon mine which consisted mostly with magnetite and some pyrite, 38.7% Fe (39.3% of total Fe), 1.1% S, 0.75% P, 2.9% Mn and etc. Through various studies, magnetite concentrate could be successfully yielded up to 60 % Fe concentrate containing 0.22% S and 0.20% P with about 82 % of recovery by wet magnetic separation to grind minus 28 mesh, pyrite flotation concentrate containing up to 40% S with about 65% of recovery to regrind to minus 65 mesh using 200 g/t of copper sulfate, 60 g/t of Z-6, 48 g/t of pine oil and at pH 7 to 7.5.
김갑성,조명승 대한금속재료학회(대한금속학회) 1968 대한금속·재료학회지 Vol.6 No.2
A feasibility study on sulfide mineral bearing iron ore from Yangyang iron mine was made to eliminate sulfur contents. The study indicated that by magnetic separation and flotation a portion of sulfide minerals could be removed. Magnetic separation, alone, was not amenable to eliminate effectively the sulfur contents to meet the iron ore concentrate specification. Petrographic examination showed that dendritical intrusion of sulfide minerals into magnetite grains needed fine grinding over 100 mesh for liberation.