Aluminium is often called the green metal, thanks to properties that support sustainable product development and enable recycling and re-melting.
Aluminium is light and strong, is easy to shape and process, is corrosionresistant, and has good heat transfer properties.
Responsible use of resources
A part of the aluminium raw material that Gränges uses originates from primary sources. The basic ore, bauxite, is extracted from bauxite mines.
The production of primary aluminium requires a large amount of energy. However, once the metal has been produced, it can be recycled without quality deterioration, at only 5 % of the energy that is required to produce primary aluminium.
The percentage of recycled aluminium can be increased through improvements in the production process and by developing alloys which can absorb more recycled material.
Gränges’ processes transform aluminium into higher value added products. By developing material that enables smaller, lighter and more designable heat exchangers, vehicles, heat pumps and air conditioning systems can be made less heavy and more efficient.
Aluminium from Gränges is found in half of the world’s cars and the trend is towards more, smaller and lighter heat exchangers in vehicles. In cars, lower weight results in lower fuel consumption.
Stricter environmental requirements for stationary heat exchangers support the transition from copper to aluminium.
All aluminium used in Gränges’ processes is recycled either in-house, externally or through selling.
Both purchased aluminium scrap, as well as a growing majority of Gränges’ own process scrap, are recycled in-house. The aim is to increase the percentage of recycled raw materials and further improve the metal yield. In 2015, the percentage of primary aluminium input at Finspång decreased by approximately 15 % from 2014.