| Abstract Scope |
Slags generated from primary lead industry operations are widely recognized as potential sources of zinc, which accumulates in the slag during the smelting process. Some smelters are equipped with a subsequent fuming process to recover the zinc which typically ranges from 4 to 16%. However, many lead producers do not employ such processes, leading to the disposal of high-zinc-containing slag. Montanuniversitaet Leoben has developed effective strategies for treating these slags, enabling the recovery of both zinc and lead. Additionally, the remaining mineral phase can be repurposed. These innovative concepts offer a comprehensive remediation solution for dumpsites or a zero-waste treatment for slags generated in ongoing smelter operations. This paper outlines the reduction process and the optimization of the slag, aiming to meet the necessary characteristics for its use as a sand substitute in concrete. Furthermore, the study presents results on the utilization of biocoke instead of fossil carbon carriers, promoting a CO2-neutral process. |