A new method for leaching of electric arc furnace dust (EAFD) with sulphuric acid

摘要

We propose a method for leaching zinc from oxidic zinc bearing materials, characterized in that a metal containing material is brought into contact with sulphuric acid in two successive leach stages, namely a first leach and a second leach, and iron oxide is removed from the leach solution separetely from a respective leach residue of the leach stages. This method is highly efficient and can produce iron for possible further use.