Recovery of Zinc from Low-Grade Steelmaking Dust UsingHydrometallurgical Process
Publish Year: 1403
Type: Conference paper
Language: English
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Document National Code:
IMES18_261
Index date: 1 January 2025
Recovery of Zinc from Low-Grade Steelmaking Dust UsingHydrometallurgical Process abstract
Steelmaking dust, often contaminated with high levels of chlorine, poses significant challenges forconventional zinc recovery methods. Additionally, low-grade dust cannot be directly processed throughelectrolysis. This study presents a comprehensive approach to recover zinc from this challengingfeedstock. Sulfuric acid leaching was employed to dissolve zinc, achieving a leaching efficiency ofapproximately 94%. A neutralization step removed impurities like iron. Solvent extraction usingD2EHPA selectively extracted zinc ions, yielding an extraction efficiency of 83%. Subsequently,stripping recovered 94% of the zinc into an aqueous solution. Finally, electrowinning deposited highpurityzinc metal onto an aluminum cathode, achieving a current efficiency of 90%. This integratedprocess offers a sustainable solution for recovering valuable zinc from low-grade steelmaking dust,mitigating environmental concerns and contributing to a circular economy for metal production
Recovery of Zinc from Low-Grade Steelmaking Dust UsingHydrometallurgical Process Keywords:
Recovery of Zinc from Low-Grade Steelmaking Dust UsingHydrometallurgical Process authors
Saeid Karimi
Assistant professor, Department of Metallurgy and Materials Engineering, Hamedan University of Technology, Hamedan, Iran
Bahram Behnajady
Faculty of Materials Engineering, Sahand University of Technology, Sahand New Town, Iran
Javad Moghaddam
Materials and Metallurgical Engineering Department, University of Zanjan, Zanjan ۳۸۷۹۱-۴۵۳۷۱, Iran
