The distribution of particle size and composition of manganese nodule comminuted during lifting
The distribution of particle size and composition of manganese nodule comminuted during lifting / Chi Ho Yoon, Jonggel Kim, Hongki Park, Kyoungkeun Yoo
p. 348-352 ; 28cm
수록자료: Geosystem engineering. Korean Society of Mineral and Energy Resources Engineers. Vol.18 no.5-6(2015 October-December), p. 348-352 18:5/6<348 ISSN 1226-9328 저자: Chi Ho Yoon, Mineral Resources Research Division, Korea Institute of Geoscience & Mineral Resources 저자: Jonggel Kim, Department of Energy & Resources Engineering, Korea Maritime and Ocean University 저자: Hongki Park, Department of Energy & Resources Engineering, Korea Maritime and Ocean University 저자: Kyoungkeun Yoo, Department of Energy & Resources Engineering, Korea Maritime and Ocean University
The effect of grinding time on the particle size distribution and chemical composition of manganese nodule was investigated to provide information such as the density and the metal contents of Mn, Fe, Ni, and Co for efficient design of separation process on ship. Therefore, the manganese nodules obtained from Pacific Ocean were ground with the mortar and ball mill, and then the density and the contents of metals were measured with particle size. In the mortar grinding test, the density and Mn contents of the ground product increased as the particle size increased indicating that the smaller particle contains less metallic components. In the ball milling test, the weight distribution of particle with less than 150 µm increased from 2.6 to 18.8% with the grinding time from 20 to 180 min, respectively. In the particle range with – 150 μm, the contents of Mn and Ni increased with increasing grinding time, whereas there is a little difference in the Fe and Co contents with the grinding time. The increase in density with grinding time resulted from the increase in the contents of Mn. These kinds of information are useful to design the efficient separation process on ships.