Processes for treatment of Steel Works Dusts for Recovery of Metallic Components

摘要

The disposal of process and production residuals as well as the recycling of useful components is becoming increasingly important in the iron & steel industry, both for economical and ecological reasons. Conventional recycling techniques have always focused on the recycling of scrap and iron-enriched slags arising within a steel works complex. Current trends in the iron and steel industry, however, are additionally focusing on methods of separation and concentration of non-ferrous components i.e. zinc and lead, from dusts generated at the blast furnace and BOF/EAF sites. Subject paper outlines the activities currently under investigation at VAI (Voest-Alpine Industrieanlagenbau GmbH) and Voest-Alpine Stahl Linz, both of Linz, Austria, with regard to technical methods of separation and concentration of zinc and lead from dusts.