PRELIMINARY ECONOMIC EVALUATION OF DEEP-SEA REE MUD MINING

被引：0

作者：

Yamazaki, Tetsuo ^{[1
]}

Yamamoto, Yuta ^{[1
]}

Nakatani, Naoki ^{[1
]}

Arai, Rei ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Sakai, Osaka 591, Japan

来源：

33RD INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2014, VOL 7: OCEAN SPACE UTILIZATION | 2014年

关键词：

D O I：

暂无

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

Deep-sea rare-earth element-rich mud (REE mud) distributes in pelagic clayey sediment column on ocean seafloor at 4,000-6,000 m deep. The thickness ranges 5-80 m and the burial depth 0-100 m. The REE contents range 600-2,250 ppm in the Pacific and one of the richest, maximum 6,500ppm, has been found near Minami-Tori-shima (Marcus Is.) in Japan's exclusive economic zones. Assuming a conventional hydraulic excavation and lifting methods, the economy of REE mud mining near Minami-Tori-shima (Marcus Is.) is preliminary examined. Because the contents of valuables in REE mud are low and the ones of wastes are high, quite little chance for the economically feasible mining has been found from the result.

引用

页数：5