A method for producing 3N5 aluminium water from aluminium electrolysis cells

By strictly controlling the impurity content of alumina raw materials and optimizing electrolysis process parameters, combined with chute conveying and recycling of covering material, the problem of insufficient purity in electrolytic aluminum production was solved, enabling the direct production of high-purity refined aluminum, simplifying the process and reducing costs.

CN122128763APending Publication Date: 2026-06-02GUANGXI LAIBIN YINHAI ALUMINUM IND CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGXI LAIBIN YINHAI ALUMINUM IND CO LTD
Filing Date
2026-03-25
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing electrolytic aluminum production processes are unable to produce refined aluminum with a purity of 99.95%. Traditional methods are difficult to operate and require secondary purification, resulting in low aluminum purity.

Method used

The process involves strictly controlling the impurity content of alumina raw materials, directly conveying the alumina raw materials through sluices, combining a three-low-one-high electrolysis process and recycling of covering material, and optimizing the electrolyte composition and electrolysis parameters, including low voltage, low molecular weight ratio, low superheat and high aluminum liquid height.

Benefits of technology

It significantly improves the purity of refined aluminum molten aluminum produced directly from electrolytic cells, reduces impurity content, simplifies the production process, reduces energy consumption and costs, extends equipment life, and meets the purity requirements of refined aluminum.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure SMS_1
    Figure SMS_1
  • Figure SMS_2
    Figure SMS_2
Patent Text Reader

Abstract

The application discloses a method for producing refined aluminum 3N5 aluminum liquid in an aluminum electrolysis cell, which comprises the following steps: preparing materials: putting aluminum oxide raw materials into a feeding tank; discharging: the feeding tank directly delivers the aluminum oxide raw materials to the electrolysis cell through a chute; three-low-one-high electrolysis process: using the electrolysis cell to electrolyze the aluminum oxide raw materials, the electrolysis cell voltage is 3.90-3.92V, the molecular ratio is 2.20-2.25, the aluminum liquid height is controlled to be 22-26cm, and the superheat is controlled to be 3-8 DEG C. The application has the beneficial effects that the method can effectively improve the purity of the refined aluminum aluminum liquid directly produced by the electrolysis cell, effectively solves the technical problem of low aluminum purity in the existing electrolytic aluminum production process, and has the advantage of high aluminum purity.
Need to check novelty before this filing date? Find Prior Art