Simultaneous leaching of seafloor massive sulfides and polymetallic nodules

Simultaneous leaching of seafloor massive sulfides (SMS) from Loki’s Castle on the Arctic Mid-Ocean Ridge (AMOR) and polymetallic nodules (PN) from Clarion Clipperton Zone (CCZ) of the Central Pacific Ocean was studied. Leaching tests were conducted using sulfuric acid and sodium chloride, at a temp...

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Bibliographic Details
Published in:Minerals
Main Authors: Kowalczuk, Przemyslaw, Bouzahzah, Hassan, Kleiv, Rolf Arne, Aasly, Kurt
Format: Article in Journal/Newspaper
Language:English
Published: MDPI 2019
Subjects:
Mineralforedling
Mineral processing
VDP::Materialteknologi: 520
VDP::Materials science and engineering: 520
Arctic
Pacific
Online Access:http://hdl.handle.net/11250/2618829
https://doi.org/10.3390/min9080482
Description
Summary:Simultaneous leaching of seafloor massive sulfides (SMS) from Loki’s Castle on the Arctic Mid-Ocean Ridge (AMOR) and polymetallic nodules (PN) from Clarion Clipperton Zone (CCZ) of the Central Pacific Ocean was studied. Leaching tests were conducted using sulfuric acid and sodium chloride, at a temperature of 80 °C for 48 h under reflux. The effect of PN-to-SMS ratio was examined. It was shown that simultaneous leaching of two different types of marine resources was possible resulting in high dissolution rates of metals. The proposed process has many advantages as it does not require pyrometallurgical pretreatment, and yields solid products (i.e., silica, barite, elemental sulfur, albite, microcline, muscovite), which might be utilized for various industrial applications. publishedVersion © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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