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Development of elemental technologies for seafloor mineral processing of seafloor massive sulfides

Development of elemental technologies for seafloor mineral processing of seafloor massive sulfides
Development of elemental technologies for seafloor mineral processing of seafloor massive sulfides
Seafloor Massive Sulfides have been expected to be future mineral resources. The grade of valuable metallic elements in ores of Seafloor Massive Sulfides is usually small percentage. If valuable minerals can be extracted from the ores on deep seafloor, the total mining cost can be reduced significantly. The authors proposed Seafloor Mineral Processing, where ores are to be ground into fine particles and separated into concentrates and tailings on seafloor. The Seafloor Mineral Processing system consists of processing units for unit operations such as grinding and separation. To investigate the applicability of flotation, which is a method to separate ore particles by using the difference in wettability of minerals, to the separation unit, measurements of contact angles of sulfide minerals at high pressures were carried out. The results suggested that the contact angles of the minerals would have relationships with pressure in depending on the kind of minerals and solutions. In addition, applying Laser-Induced breakdown Spectroscopy (LIBS), an optical method for elemental analysis, to measurement of metal grade of ore particles handled as slurry in the processing units was also investigated. Signals assigned to copper, zinc, and lead were successfully detected in the spectra obtained from ore particles in slurry flow.
Thornton, Blair
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Nakajima, Yasuharu
76a7d9ad-3a28-4d80-a81c-143da7c2ef52
Yamamoto, Joji
815ce865-244b-454c-83a6-bf3f75e34a24
Takahashi, Tomoko
937057f6-8e83-4a7f-b11f-b549c94afdf6
Yamabe, Yuta
ab4e0ee4-3a21-4757-baa2-9b88fd7fe4e5
Dodbiba, Gjergj
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Fujita, Toyohisa
a250bd64-e21f-4209-a7bf-307e9bdbc793
Thornton, Blair
8293beb5-c083-47e3-b5f0-d9c3cee14be9
Nakajima, Yasuharu
76a7d9ad-3a28-4d80-a81c-143da7c2ef52
Yamamoto, Joji
815ce865-244b-454c-83a6-bf3f75e34a24
Takahashi, Tomoko
937057f6-8e83-4a7f-b11f-b549c94afdf6
Yamabe, Yuta
ab4e0ee4-3a21-4757-baa2-9b88fd7fe4e5
Dodbiba, Gjergj
6543229d-2641-4e92-80a3-1cc17fc34eea
Fujita, Toyohisa
a250bd64-e21f-4209-a7bf-307e9bdbc793

Thornton, Blair, Nakajima, Yasuharu, Yamamoto, Joji, Takahashi, Tomoko, Yamabe, Yuta, Dodbiba, Gjergj and Fujita, Toyohisa (2019) Development of elemental technologies for seafloor mineral processing of seafloor massive sulfides. In OMAE 2019.

Record type: Conference or Workshop Item (Paper)

Abstract

Seafloor Massive Sulfides have been expected to be future mineral resources. The grade of valuable metallic elements in ores of Seafloor Massive Sulfides is usually small percentage. If valuable minerals can be extracted from the ores on deep seafloor, the total mining cost can be reduced significantly. The authors proposed Seafloor Mineral Processing, where ores are to be ground into fine particles and separated into concentrates and tailings on seafloor. The Seafloor Mineral Processing system consists of processing units for unit operations such as grinding and separation. To investigate the applicability of flotation, which is a method to separate ore particles by using the difference in wettability of minerals, to the separation unit, measurements of contact angles of sulfide minerals at high pressures were carried out. The results suggested that the contact angles of the minerals would have relationships with pressure in depending on the kind of minerals and solutions. In addition, applying Laser-Induced breakdown Spectroscopy (LIBS), an optical method for elemental analysis, to measurement of metal grade of ore particles handled as slurry in the processing units was also investigated. Signals assigned to copper, zinc, and lead were successfully detected in the spectra obtained from ore particles in slurry flow.

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Published date: June 2019

Identifiers

Local EPrints ID: 429670
URI: https://eprints.soton.ac.uk/id/eprint/429670
PURE UUID: 4f7cd81f-8dde-4c06-ae8b-270eb7a68c6e

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Date deposited: 03 Apr 2019 16:30
Last modified: 03 Apr 2019 16:30

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