Electrolytic apparatus and electrolytic method

By improving the structure of the electrolysis device and controlling the electrolysis process, the dissolution time of scandium trioxide was extended, the scandium yield was increased, and the current efficiency was enhanced, thus achieving the efficient preparation of aluminum-scandium alloys.

CN122128769APending Publication Date: 2026-06-02ZHENGZHOU NON FERROUS METALS RES INST CO LTD OF CHALCO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHENGZHOU NON FERROUS METALS RES INST CO LTD OF CHALCO
Filing Date
2026-04-03
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In existing electrolysis devices, scandium trioxide cannot be completely dissolved, resulting in low scandium yield.

Method used

Design an electrolysis device comprising an anode chamber, a cathode chamber, and a bottom chamber. Scandium trioxide is mixed with electrolyte in the cathode chamber and then moves through the bottom chamber to the anode chamber to react with molten aluminum. An insulating layer is provided to concentrate the current, and a zoned temperature control and current collector structure is adopted to improve current efficiency.

Benefits of technology

The dissolution time of scandium trioxide in the electrolyte was extended, the scandium yield was improved, and the current efficiency was improved through the insulating layer and current collector structure, thus realizing the efficient preparation of aluminum-scandium alloy.

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Abstract

This application discloses an electrolysis apparatus and method, solving the technical problem of low scandium recovery in existing technologies. The electrolysis apparatus includes: an electrolytic cell with an anode chamber, a cathode chamber, and a bottom chamber. The anode chamber and the cathode chamber are arranged horizontally at intervals, both located above the bottom chamber. The upper parts of the anode chamber and the cathode chamber are open, and the bottom chamber communicates with both the cathode chamber and the anode chamber. The bottom chamber is used to contain electrolyte and aluminum-scandium alloy liquid, and has a drain port. An anode has its lower end extending into the anode chamber. A current collector includes a body and an insulating layer covering the outer periphery of the body, with its lower end extending into the cathode chamber. The improved electrolysis apparatus of this application increases the scandium recovery rate.
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