Title of article
Study of Zinc Leaching of EAFFlue Dust Using Sodium Hydroxide
Author/Authors
Ghani, Ahsan Abdul Department of Chemical Engineering - University of Karachi - Karachi, Pakistan , Saleem, Junaid Department of Chemical Engineering - University of Karachi - Karachi, Pakistan , Hameed, Zeeshan A Department of Quality Assurance - Peoples Steel Mills Ltd - Karachi, Pakistan , Lal, Hira Department of Chemical Engineering - University of Karachi - Karachi, Pakistan , Shoaib, Muhammad Department of Chemical Engineering - University of Karachi - Karachi, Pakistan
Pages
5
From page
33
To page
37
Abstract
During the production of steel from Electric Arc Furnace(EAF), large amount of by-product called EAF flue dust is generated. The major proportion of flue dust is comprised of Zn (41.5 % wt.). Different phases identified by XRD analysis are zincite, franklinite and magnetite with zincite being dominant. In this study, we have performed flue dust treatment using sodium hydroxide as leaching medium. Different concentrations of alkali were used to optimize maximum recovery of Zn. XRF and wet chemical methodswere used to characterize the dust samples both before and after leaching. The optimum alkali concentration for selective leaching of Znwas found to be 4 M with a Znrecovery of 90 %.
Keywords
EAF dust , Leaching , Sustainable environment , Znrecovery
Journal title
Pakistan Journal of Analytical and Environmental Chemistry
Serial Year
2016
Full Text URL
Record number
2594280
Link To Document