A New Added-Value Application for Steel Wire Drawing Mill Scale Waste in Stoneware Ceramic Products

Mill scale (MS) is a iron-rich waste generated in the wire drawing process with high iron content and still mainly disposed landfills. The scientific community has been studied its use other applications such as pigments, concretes, among others. This work aims to study new added-value application for MS—the development of coloured ceramic pastes. For this purpose, influence added amount (0, 1, 3, 5 10 wt.%), pre-treatment (milling + sieving at 212 μμm), maximum firing temperature (from 1043 1165 °C) type furnace (laboratory/industrial) were analysed on sample’s characteristics. A dark grey stoneware product was obtained through incorporation wt.% MS leaching tests conducted pilot cups confirmed immobilization matrix. Furthermore, it proved that can be reduced by about 100 °C without affecting specimen’s reduction leads considerable decrease energy consumption upon firing, inducing economic environmental advantages. Therefore, provides contributes virgin raw materials more sustainable products.