Japan Agency for Marine-earth Science and Technology

Toa Corporation

Tomohiro Morisawa

Yoshihisa Kawamura

Shinya Omori

Hiroshi Iida

Ikuo Sawada

Masanori Kyo

Keita Akiyama

Ryutaro Murakami

Eigo Miyazaki

A mining riser pipe is extended from above water toward a water bottom containing water bottom resources, and a lower portion of an insertion pipe connected to a lower portion of the mining riser pipe is inserted into the water bottom. A liquid is supplied into the insertion pipe and a rotation shaft extends axially inside both of pipes is rotated to rotate stirring blades attached to a lower portion of the rotation shaft inside the insertion pipe, thereby drilling and dissolving mud S inside the insertion pipe into a slurry form by is raised to an upper portion of the insertion pipe by a stirring flow generated by the rotation of the stirring blades, and the raised mud is lifted above the water through the mining riser pipe by a lifting force.

Water bottom resource collecting system and collecting method

Growing community of inventors

Tokyo, Japan

Tomohiro Morisawa