Hydrogen as Carbon-Free Reducing Agent in Non-ferrous Slag Fuming

Abstract In this work, pyrometallurgical treatment of non-ferrous iron residue was studied. This approach aimed to recover the valuable metals and convert into reusable benign slag using hydrogen as a non-fossil reducing agent. The for type involves pretreatment prior two stages, oxidation reduction. Hydrogen employed agent in cleaning. reduction tests were performed at temperatures 1200 °C, 1250 1300 °C H 2 N gases form gas atmosphere. results show that is an effective reductant because proceeded rapidly, forming speiss droplets within already after 10 minutes. laboratory-scale experiments suggest slags or other residues obtained from metallurgical processes can be further cleaned fuming process its mixtures obtain environmentally friendly cleaner with respect volatile metals. also one tune control formation metallic during process. Thermodynamic modeling simulate stage, i.e ., slag. Metal alloy well elemental distributions between metal studied, thermodynamic agree experimental results.