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What is H2SO4 Leaching of Zn Secondaries about?

This chapter covers the most significant Zn secondary leaching using inorganic sulphuric acid (H 2 SO 4 ) as lixiviant. The physical, chemical, and thermodynamic properties of Zn compounds and H 2 SO 4 are introduced in detail. The effects of reagent concentration, temperature, time, particle size, solid/liquid ratio, and oxidant addition on Zn dissolution are covered. The effects of sulfating roasting on Zn-ferrite are explained. Previous studies on Zn leaching were summarized along with possible reactions. • Galvanizing residue • Dissolution O Roasting, Leaching, and Electrolysis S Sulfur SFA Secondary Fly Ash S/L Solid/Liquid ratio ZPR Zinc Plant Residue EAF dust leaching, Waelz slag treatment, metal recovery from various metallurgical slags, bottom ash treatment, e-waste recycling, etc., can be used for secondary Zn metals recovery. Other than metallurgical waste, EoL automobiles, appliances, diecast parts, trimmings, and offcuts are also available for metal recycling. Zn can be recovered from various tailings, scraps, and residues at all stages of production and use. The main secondary sources of the metals are sludges and tailings from the processing of some nonferrous metals

Author

Muammer Kaya

Publisher

Springer International Publishing Springer

Published

2023

Language

EN

ISBN

9783031146848

Subjects

Science, Chemistry, Management