초록

1. 망간단괴처리 기술에 대한 국내외 자료수집 및 조사검토( 현재까지 개발된 처리법에 대한 세부기술검토와 장단점비교)2. 북태평양 해역에서 채취된 망간단괴시료 수집 및 이의 물리 화학적 특성조사(Morphology, 화학적 조성, 구성물질 등)3. SO₂가스에 의한 망간단괴 분해실험( 각 원소의 환원침출실험을 통한 적정조업조건 규명)4. 침출원액으로부터 망간 및 철분제거를 위한 용액정제 실험

Abstract ▼

Deep- sea nodules were discovered for the first time in 1873 during the voyage of the Challenger. They had not been considered, however, as the mineral resources for several decades before J. Mero reported the existence of the large quantities of nodules under the Pacific Ocean in 1950's.After Mero'

Deep- sea nodules were discovered for the first time in 1873 during the voyage of the Challenger. They had not been considered, however, as the mineral resources for several decades before J. Mero reported the existence of the large quantities of nodules under the Pacific Ocean in 1950's.After Mero's exploration, the leading group of nations such as U.S.A., France, U.S.S.R and Japan has continuously invested in the exploration and development of sea nodules with the strategy of securing the metal values available essentially in various industries.In recent years, Korea began to invest in the exploitation of Pacific-Ocean nodules, especially between the Clarion-Clip-perton fracture zones. It must be developed as well as the investigation of exploitation that the treatment of manganese nodules suitable for the industrial peculiarity and location of Korea.In this study, the leaching of metal values from the nodules was carried out by using the sulfur dioxide reduction technique in addition to the examination of physicochemical properties of them. The extraction of manganese, nickel, and copper reached about 90% after the sulfur dioxide leaching for 200 minutes while that of cobalt and iron was found not to be more than 70%. As far as the effect of solid density was concerned, it was observed to be dependent on the elements in the nodules. Activation energy of the reduction reaction was 2.53 ㎉/mole for manganese and 2.78 ㎉/mole for nickel, respectively, which indicated that the rate determining step of this reaction was the process of transportation of sulfur dioxide gas in the solution. In addition, it is concluded for the process of solvent extraction to be needed to remove completely the impurities of manganese and iron from the pregnant solutions.

목차 Contents

• 제 1 장 서 론...17
• 제 1 절 매장현황...18
• 제 2 절 망간단괴의 분포...20
• 제 3 절 생성기원...25
• 제 4 절 망간단괴의 성상 및 물리화학적 특성...28
• 제 2 장 망간단괴처리기술에 대한 조사검토...30
• 제 1 절 환원침출...31
• 1. 예비환원 - 암모니아 침출...31
• 2. 암모니아 가압침출...35
• 3. CO가스에 의한 환원침출...36
• 4. 환원제에 의한 침출...38
• 제 2 절 황산침출법...39
• 1. 상압침출...40
• 2. 가압침출...42
• 제 3 절 염화수소배소 - 수용액 침출법...44
• 1. 망간금속의 제조...47
• 2. cementation에 의한 Ni, Cu 및 Co의 제거...50
• 제 4 절 황산화배소 - 물 침출법...51
• 1. 건식법...51
• 2. 습식법...54
• 제 3 장 실험방법 및 시료...56
• 제 1 절 시 료...56
• 제 2 절 실험방법...64
• 제 4 장 실험결과 및 검토...67
• 제 1 절 망간단괴의 침출실험...67
• 1. SO₂가스에 의한 금속의 침출율...67
• 가. 시료종류에 따른 금속의 침출율 변화...67
• 나. 각 금속의 침출율에 대한 고체농도의 영향...73
• 다. 반응온도의 영향...79
• 라. SO₂유량의 영향...83
• 마. SO₂분압의 영향...89
• 2. 망간단괴 처리를 위한 SO₂소비량...93
• 가. 고체농도의 영향...94
• 나. 반응온도의 영향...96
• 다. 시료종류의 영향...99
• 제 2 절 침출액 처리실험...99
• 1. pH조절에 의한 철분제거...100
• 2. 암모니아용액에서의 망간과 철분의 제거...102
• 제 5 장 결 론...104
• 참 고 문 헌...107