Alternative Method for Treating Electric Arc Furnace Dust: Simulation and Life Cycle Assessment

Abstract The technical and environmental aspects of treating electric arc furnace dust (EAFD) using a novel process including alkaline roasting organic acid leaching were evaluated compared to the globally applied conventional Waelz process. global warming potentials roasting–organic (with co-product credits) processes 7.48 4.71 kg CO 2 -eq with 33% Zn as feed material. However, decreasing content, become environmentally more competitive, 12% Zn, corresponding GWP values 6.31 9.26 -eq. Co-product recovery decreased net impacts from processing dust, which gave some benefits was observed be energy intensive; however, high consumption chemicals issue in excess caustic soda step significant factor overconsumption stage, therefore, optimization is crucial. Other ways decrease chemical include investigating possibility reuse raffinate leaching, or scrubbing leach calcine acid-consuming alkali. Evaluating early enables iterative agile development directing focus on problem areas. Graphical