This process demonstrates nearly 100% zinc extraction from flue dust, highlighting methods like electrowinning and leaching.
Flue dust from processing of steelmaking dust in cupola furnace was processed hydrometallurgically in order to recover zinc. The flue dust contained 17.8% Zn, 8.14% Si, 4.20% Fe, 2.34% Pb and minor elements. Leaching of the dust in H2SO4 enabled achieving almost 100% Zn extraction. Iron was removed from the leach liquors by means of hydrolytic precipitation up to pH = 4.5. Zinc electrowinning was used to obtain metallic zinc of high purity from purified solutions. As an alternative process of winning zinc from the leach liquors, precipitation of basic zinc carbonate was investigated.
No takes yet. Share an insight, caveat, or question.
Dvořák et al. (2025) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: