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With the SisAl process the transformation to a low carbon circular economy and other key challenges are turned upside down into new European opportunities. Elkem (Si), SiQAl & Mytilineos (HPA), and Calef (CO2 looping) will commercialise the technologies and products (Si & HPA) for the benefit of end users requiring sustainable raw materials with a minimal environmental and CO2 footprint. By introducing integrated CO2 looping, the already superior low CO2 footprint of the SisAl process is strengthened.
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The promise of the SisAl process is to resolve this problem of non-sustainable raw materials, by replacing carbon with secondary aluminium sources (scrap, dross) as reductant for Si production from quartz (SiO2), and in parallell making an intermediate slag which is a perfect precursor for HPA processing. Similarly, HPA is today made from ultrapure primary aluminium, having a large CO2 footprint.
#Sisal seil plus#
Unfortunately, both Si and HPA are today produced non-sustainably for each tonne of Si you make a lot more CO2, plus harmful pollutants. Silicon and High Purity Alumina (HPA) are vital raw materials for the transition to the low carbon society silicon as a dominant photovoltaic (PV) material for solar energy applications and as an important ingredient in light-weight applications (automotive and others), while HPA is a key material in Light Emitting Diodes (LEDs) and increasingly in Lithium Ion Batteries (LIBs). If successful in up-scaling, NTNU through a spin-off (licences), SiQAl & Mytilineos (HPA), and CALEF (CO2 looping) will commercialise the sustainable technologies and products. This problem is resolved by SisAl, by replacing carbon with secondary Al for Si production, and in parallel making a slag being a perfect precursor for HPA. Today Si and HPA are made non-sustainably for each tonne of Si you make a lot more CO2, plus harmful pollutants. Project duration: 1 January 2021 – 31 December 2023 Objective