Apparatus for electrolytic recovery of antimony and method for electrolytic recovery of antimony using same

The electrolytic recovery apparatus and method address antimony production inefficiencies by using a diaphragm-separated electrolytic cell with specific cathode and anode structures to minimize antimony loss, reduce energy costs, and enhance recovery rates while reusing leachate, thus improving overall efficiency and reducing process costs.

WO2026127222A1 Publication Date: 2026-06-18KOREA ZINC CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
KOREA ZINC CO LTD
Filing Date
2025-05-09
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Conventional antimony production methods, such as the dry method, result in high antimony loss, high energy costs, air pollution emissions, reduced recovery rates due to redissolution of electrodeposited antimony with by-products, and electrolytic short circuits, while also requiring excessive auxiliary materials and increasing process costs.

⚗Method used

An electrolytic recovery apparatus and method using a diaphragm-separated electrolytic cell with specific cathode and anode structures, ion-exchangeable polymer diaphragm, and controlled electrolyte levels to minimize antimony loss, reduce energy consumption, prevent redissolution, and enhance current efficiency.

🎯Benefits of technology

The method achieves lower antimony loss, reduced energy costs, minimized air pollution, increased recovery rates, and decreased auxiliary material usage by reusing leachate, thereby improving overall efficiency and reducing process costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides an electrolytic recovery apparatus for electrolytically recovering antimony from a solution containing antimony, the electrolytic recovery apparatus comprising: an electrolytic cell configured to accommodate the solution; at least one cathode disposed within the electrolytic cell; at least one anode disposed within the electrolytic cell; and at least one diaphragm separating a cathode-side region including the at least one cathode from an anode-side region including the at least one anode. The present invention also provides a method for electrolytically recovering antimony, the method comprising: (A) a leaching step of leaching an antimony-containing raw material with a lixiviant to produce a leachate containing antimony; and (B) an electrolysis step of introducing the leachate into the aforementioned electrolytic recovery apparatus to electrodeposit antimony.
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