Recovery Method of Zinc(Zn)

摘要

The present invention relates to a recovery method of metal zinc comprising: a leaching process by mixing low concentration sulfuric acid from 2 to 3 mole to steel making dust passing through washing and filtration at a proportion of 1 : 2 (wt%); an aeration process to improve the purity during the leaching process; and an electrolytic process by controlling 30 voltage and 3 current at a distance of 50 mm between the electrodes from pH6 sulfuric acid zinc solution. The present invention can economically reduce the used amount of sulfuric acid and maximize the purity of the zinc to be obtained.