Engines, and more generally power trains, represent substantial recycling potential. When they are not dismantled to supply the PRR process, they are shredded with the platin and the metal fraction is recovered after shredding.

As engines are essentially made up of cast iron and aluminium, it was considered worthwhile to examine, for exploratory purposes, the relevance of creating a cast iron process specific to engines. As the tests conducted at the end of 2012 and in 2013 failed to identify economically viable options, we refocused our attention on recycling aluminium from engines.

In addition to engines, a number of studies were carried out:

  • Cast iron brake discs
  • Plant manufacturing scrap

The production of aluminium is very energy-intensive: using recycled aluminium instead of bauxite ore helps save 95% energy. Aluminium wheel rims are already recycled as they are resold to PRR units or foundries. Nevertheless, it is worth creating a short recycling loop to minimise processing costs (in which case the grade of aluminium from the raw material is almost identical to that of the finished product).

Another metal with similar issues to aluminium is magnesium alloy.

Thanks to collaboration between the academic structure of PARISTECH and the MTB Company, ICARRE 95 was able to assess recovery possibilities and conduct initial feasibility tests.