Leaching of zinc ash with hydrochloric acid solutions

• Autorzy: Trpcevska J. , Rudnik E. , Holkova B. , Laubertova M.
• Języki publikacji: EN

Abstrakty

EN

Fine-grained fraction (<1.25 mm) of industrial zinc ash was characterized in terms of chemical and phase compositions as well as leaching behaviour in hydrochloric acid solutions. Waste product contained about 55% Zn, 14% Cl, and less than 0.4% of other metals (Fe, Pb, Al, etc.). It was a mixture of metallic zinc, simonkolleite, zinc oxide, and zinc hydroxide chloride. Dissolution of metals from the zinc ash was determined depending on the solid-to-liquid ratio (1:80-1:20), acid concentration (0.23-2.0 M), and temperature (20-60ºC). The best results (almost 100% zinc recovery) were obtained for 2M HCl at 20ºC, S:L ratio 1:20, and leaching time 30 min. The final solutions were contaminated mainly by iron and lead ions (both below 0.15 g/L). Further treatment of the solution to obtain metallic zinc or zinc chloride was also proposed.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2018
• Tom: 27
• Numer: 4
• Opis fizyczny: p.1765-1771,fig.,ref.

Twórcy

autor

Trpcevska J.

• Technical University of Kosice, Faculty of Materials, Metallurgy and Recycling, Kosice, Slovakia

autor

Rudnik E.

• AGH University of Science and Technology, Faculty of Non-Ferrous Metals, Krakow, Poland

autor

Holkova B.

• Technical University of Kosice, Faculty of Materials, Metallurgy and Recycling, Kosice, Slovakia

autor

Laubertova M.

• Technical University of Kosice, Faculty of Materials, Metallurgy and Recycling, Kosice, Slovakia

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Identyfikatory

DOI

10.15244/pjoes/78039