Elaboration of Steels in Electric Arc Furnace (EAF) and Environmental Protection

This article presents the most important polluting aspects of Electric Arc Furnace (EAF) for elaboration of steels The technological procedures of melting and refining yield more than 90% of overall harmful emissions. These emissions contain high levels of iron, manganese, aluminum, and silicon oxides, as well as heavy metal oxides such as nickel, chromium, cadmium, lead, and copper. In this context, the articles presents: the chemical makeup of the EAF-generated powder; limit values allowed for the powder concentrations; the powder emissions classification and content at the electric furnace; emission Factors for the heavy metals at the EAF elaboration; wet removal plant (10 t electric arc furnace); the removal plant scheme for the gases evacuated from the EAF.