Iron removal from recycled aluminium

 

New process of metal purification

The technology

Researchers from the University of Birmingham have invented a process of iron removal from aluminium alloys during recycling of scrap metal.

Recycling of scrap metal, especially aluminium, is an important direction in reducing the impact of global industry on the environment. It is preferable to recycle aluminium rather than produce it from bauxites as it is more environmentally friendly and less energy consuming. However, recycled aluminium alloys are contaminated with iron and lose the desired mechanical properties. This limits its application in high-tech production (for example, aerospace or automotive industry).

The technology developed in the University of Birmingham is a simple, inexpensive process to remove iron contamination during aluminium recycling. The process only requires a temperature gradient and a static magnetic field and can be applied to continuous aluminium remelting. Moreover, it does not require additives (e.g. Mn metal) and can be applicable to any types of aluminium alloys. 


Benefits

  • Green and environmentally friendly.

  • Highly applicable: The process does not require a distinct iron containing phase to be present in the alloy.

  • Clean: There is no need in additives (such as Mn) for creation of iron-rich phases.

  • Scalable: The apparatus has a flexible configuration that can be adapted to suit large-scale processes.

  • Continuous: The process can be configured to be installed into a continuous production line.

Applications

 

Aluminium recycling for:

 

  • Automotive;

  • Aerospace;

  • Renewable energies;

  • Electronics;

  • Marine and other transport.

Opportunity

  • Licensing
  • Co-development
  • Collaboration