This work deals with the recycling of electric arc furnace (EAF) steelmaking dust containing heavy metals by hydrometallurgical method. Studied dust was obtained from Zeleziarne Podbrezova a. s., Slovakia. Hydrometallurgical treatment of EAF dust in order to obtain usable components and to minimize the amount of hazardous waste is composed of several steps. The most important step is leaching. As leaching agent solutions of H_2SO_4 were used. The work is evaluating the effect of acid concentration, temperature and solid to liquid ratio (S:L) on zinc recovery. Subsequently, the refining processes of leachate, refining and removal of iron, copper, lead and other impurities were studied. The final step of the hydrometallurgical process was represented by electrowinning, whose output was zinc of purity of 99.99%. As the previous experiments, the electrowinning experiments were carried out first on synthetic solutions and then the real solutions coming from leaching of electric arc furnace dust was used for the experiments.
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