“…Stainless steel dust (SSD) is generated during s45tainless steel production due to ejection of metal and slag droplets by bursting of bubbles on the bath surface (Delhaes et al, 1993), and collected at off-gas cleaning system. Approximately, 20 kg SSD per ton of crude steel is formed in the EAF (Electric Arc Furnace) process (Best and Pickles, 2001;Sofilić et al, 2004) and 10 kg in the AOD (Argon Oxygen Decarburization) process (Delhaes et al, 1993). The SSD contains significant amounts of valuable metals, such as Zn, Cr, Fe and Ni, in the form of complex oxides (Delhaes et al, 1993;Laforest and Duchesne, 2006;Ri and Chu, 2015;Yang et al, 2019).…”