“…An alternative to tackle this issue is to valorise the salt slag residues by crushing and dissolving the salts in water (Delgado Sancho, 2017). Examples of salt-slag valorisation processes have been previously investigated in (Padilla et al, 2022) (Li et al, 2013). The present study considers the industrial valorisation of the salt-slag into, on one side, salts and Al concentrates which can be fed back into the rotary furnace, and on the other side ammonium sulphate with application in fertilizers (Rodrigues et al, 2022) and NMCs which the chemical or construction industries can use.…”