Method for preparing regenerated aluminum alloy from waste aluminum alloy

Through the process routes of screening, smelting, melt purification, component adjustment and semi-solid flow transformation, the problems of high impurity content and uneven composition in the regeneration of waste aluminum alloys are solved, and high-purity and high-performance recycled aluminum alloys are prepared, achieving effective utilization of resources and environmental protection.

CN119710275AActive Publication Date: 2025-03-28ANQING NORMAL UNIV
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Patent Information

Application Number
CN202410858901.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-06-28
Publication Date
2025-03-28
Estimated Expiration
2044-06-28

AI Technical Summary

Technical Problem

The existing waste aluminum alloy regeneration methods have problems such as high impurity content, uneven alloy composition, and difficulty in removing gases and inclusions, which affect the performance and stability of recycled aluminum alloys.

Method used

The process routes of screening, smelting, melt purification, composition adjustment, casting and semi-solid flow transformation are adopted, including chemical composition detection, acid washing and oxide layer removal, magnetic field stirring, argon degassing, addition of refining agents and refining agents, photoelectric direct reading spectrometer detection and real-time component adjustment, magnetic field stirring and argon blowing, etc., are prepared.

Benefits of technology

It effectively removes impurities in waste aluminum alloys, optimizes alloy composition, improves the purity, mechanical properties and corrosion resistance of recycled aluminum alloys, reduces environmental pollution, and achieves efficient aluminum alloy recycling and reuse.

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Abstract

The invention discloses a method for preparing regenerated aluminum alloy from waste aluminum alloy, and relates to the technical field of regenerated aluminum alloy. The method comprises the steps that recycled waste aluminum alloy is classified, cleaned and magnetically separated, and non-waste aluminum alloy impurities are removed; the waste aluminum alloy is placed in a coreless medium-frequency induction furnace to be melted into molten aluminum, and then argon is introduced for degassing; a refining agent and a refiner are added into the molten aluminum, magnetic field stirring and heat preservation are conducted for a period of time, and then the surface of the molten aluminum is subjected to slagging-off and filtering; an intermediate alloy is added into the molten aluminum obtained after solution purification for component adjustment, argon is blown in, and magnetic field stirring is carried out to make alloy components uniform; and after magnetic field stirring is conducted for a period of time, the regenerated aluminum alloy is obtained through semi-solid metal rheoforming. The prepared regenerated aluminum alloy is low in hydrogen content, the primary phase a-Al morphology is more complete, the size is obviously reduced, and the mechanical property strength and plasticity are remarkably improved; meanwhile, the waste aluminum alloy is recycled, so that the production cost is reduced, resources are saved, and the method is suitable for popularization and application.
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