Molten oxide electrolysis process and related system

By adjusting the concentration and composition of the metal oxide electrolyte precursor and employing the molten oxide electrolysis method, the problem of the difficulty in economically extracting low-concentration metal oxides in existing technologies has been solved, achieving efficient and economical metal extraction and waste reduction.

CN121532541APending Publication Date: 2026-02-13BOSTON ELECTROMETALLURGICAL CORP
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Patent Information

Application Number
CN202480043130.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-05-25
Filing Date
2024-05-23
Publication Date
2026-02-13

AI Technical Summary

Technical Problem

Existing extraction metallurgical technologies are difficult to economically extract valuable metals from low-concentration metal oxides and generate large amounts of complex metal oxide waste streams, making them environmentally and economically infeasible.

Method used

By adjusting the concentration and composition of the metal oxide electrolyte precursor, metal oxides are selectively extracted using the molten oxide electrolysis method. Valuable metals are then extracted from composite metal oxides using multiple molten oxide electrolysis processes in series.

Benefits of technology

It enables the efficient and economical extraction of valuable metals from low-concentration metal oxides, reduces the amount of waste logistics, and simplifies the purification process of metal products.

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Abstract

Molten oxide electrolysis may be used to extract one or more metals from a mixture of metal oxides. The mixture of metal oxides may be complex and include at least three metal oxides, each present at 0.5 wt% or more based on the total weight of the metal oxide electrolyte precursor to produce the metal oxide electrolyte. In some cases, two or more metals may be extracted in a series of molten oxide electrolysis processes in which a metal oxide having a higher Gibbs formation energy at 1500 DEG C is preferentially reduced in each respective molten oxide electrolysis unit followed by a metal oxide having a lower Gibbs formation energy at 1500 DEG C.
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Citation Information

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