Mining technology for deep ocean mineral resources are composed of two mains things. One is the lifting technology and the other is the collecting technology. To develop the lifting technology, the shallow lifting test was conducted near sea at Hupo port of East Sea of Korea. The depth of the sea was about 100m. The lifting system for deep ocean mineral resources includes flexible hoses, lifting pump, buffer, lifting pipes and control/measurements devices. For May and June of 2009, the lifting system was successfully tested.
Steeply rising oil prices change the individual consumer lifestyle. Many countries are trying to own oil resources and mineral resources and build the national policy based on the state-owned power. Now to secure metallic mineral resources is the key word for determining the national existence not the economic problems. Korea has the limited mineral resources and there are no nickel, cobalt, and copper in it. To develop the mining technology in Clarion-Clipperton zone in the Pacific Ocean which was secured by the ministry of land, transport, maritime affairs in Korea government, are being undertaken for the future strategy of the country(Yoon, et al., 1999, Chung 1994; Chung 2002). The mining system is composed of the collecting system, which collects the mineral resources on the seabed, the lifting system, which lifts the manganese nodules from the seabed to the surface of the sea, and the mining ship. Most of all, the lifting system is the important factor to determine the success of this project. KIGAM, which is in the charge of the lifting system, has developed the lifting technology since 1994. Lifting pump, flexible pipes, control / measurement devices, and solid - liquid separator were employed to verify the performance of the lifting system.