Designing for increased recycling
For Gränges’ operations in Asia and Europe, where a high number of alloys for brazed heat exchanger applications are produced, it can be challenging to find recycled aluminium which fits well in the re-melting process and the specific alloys that are produced. Gränges therefore requires strict sorting of recycled aluminium, both from its own operations as well as from customers and recycling companies.
Gränges’ Research & Innovation (R&I) organization works to design alloys which can use a high share of recycled aluminium and which can be recycled after usage. Material for brazed heat exchangers consists of so called clad materials where different alloys are rolled together, which makes it difficult to separate upon recovery. Brazed heat exchangers are challenging to recycle at end-of-life as the various constituents are difficult to separate and sort.