Cathode for electrolytic reduction of a slurry comprising metal-bearing mineral ore particles

A cathode with a metal oxide coating addresses the issue of adsorption and deposition in slurry-based reduction processes, enhancing yield and stability by limiting elemental metal accumulation on the cathode surface.

WO2026112704A1PCT designated stage Publication Date: 2026-06-04FORTESCUE FUTURE IND PTY LTD

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
FORTESCUE FUTURE IND PTY LTD
Filing Date
2025-11-28
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

The challenge in slurry-based electrochemical reduction processes is the adsorption, absorption, and deposition of metal-bearing mineral ore particles on the cathode surface, leading to decreased yield and laborious collection of elemental metal, as well as instability due to interactions with reactants, intermediates, and products.

Method used

A cathode with a coating of metal oxides, doped metal oxides, metal hydrides, or metal carbides, such as titanium oxide, is used to resist adsorption, absorption, and deposition of elemental metal during electrolytic reduction, with a conditioning process enhancing its resistance.

Benefits of technology

The cathode effectively limits the adsorption and deposition of elemental metal, maintaining higher yield and stability by reducing the accumulation rate, allowing efficient collection and separation of elemental metal from the slurry.

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Abstract

Disclosed herein is a cathode for electrolytic reduction of a slurry of metal-bearing mineral ore particles to elemental metal particles. The cathode has a coating of a metal oxide, a doped metal oxide, a metal hydride, a metal nitride, a metal carbide or a mixture thereof. The coated cathode is at least partially resistant to adsorption, absorption and / or deposition and subsequent growth thereon of the elemental metal particles produced by electrolytic reduction of the slurry.
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