WATER BOTTOM RESOURCE COLLECTION METHOD AND SYSTEM

• Main Authors: KOBAYAKAWA MAKOTO, MORISAWA TOMOHIRO, ISHIDA YASUYUKI, KUWAHARA TAKUMA, ICHIMURA TAKAHISA
• Format: Patent
• Language: English; Japanese
• Published: 11.01.2018
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; MINING; MINING OR QUARRYING; PERFORMING OPERATIONS; SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a water bottom resource collection method and system enabling a specific resource included in a deposit of a water bottom to be efficiently collected.SOLUTION: The water bottom resource collection method is provided in which a specific resource 20c included in a deposit 20 of a water bottom B is fed in a lifted manner onto the water and is collected. In the water bottom resource collection method, the deposit 20 is continuously classified into the coarse-grained deposit content 20a including a coarse-grained fraction relatively large in a grain diameter much more and a fine-grained fraction 20b including relatively small in the grain diameter much more by using a cyclone type centrifugal separation device 3 arranged in the water. Thus, the resources 20c are unevenly distributed in one of the coarse-grained deposit content 20a and the fine-grained deposit content 20b. One of deposit content 20a and 20b with unevenly distributed resources 20c is fed in a lifted manner onto the water, and the other of deposit content 20a and 20b is made to remain on the water bottom B.SELECTED DRAWING: Figure 1 【課題】水底の堆積物に含有されている特定の資源を効率的に採取することができる水底資源の採取方法およびシステムを提供する。【解決手段】水底Ｂの堆積物２０に含有されている特定の資源２０ｃを水上に揚送して採取する水底資源の採取方法において、水中に配置されたサイクロン式遠心分離装置３を用いて、堆積物２０を相対的に粒径が大きい粗粒分をより多く含む粗粒堆積分２０ａと、相対的に粒径が小さい細粒分をより多く含む細粒堆積分２０ｂとに連続的に分級する。このことにより、資源２０ｃを粗粒堆積分２０ａと細粒堆積分２０ｂのいずれか一方に偏在させる。そして、資源２０ｃを偏在させたいずれか一方の堆積分２０ａまたは２０ｂを水上に揚送し、いずれか他方の堆積分２０ａまたは２０ｂを水底Ｂに残留させる。【選択図】図１