NDLI: Hydrometallurgical Recycling of Copper Anode Furnace Dust for a Complete Recovery of Metal Values

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Hydrometallurgical Recycling of Copper Anode Furnace Dust for a Complete Recovery of Metal Values

Content Provider	MDPI
Author	Du, šan Oráč Jana, Pirošková Andrea, Miškufová Klimko, Jakub Klein, Dušan Liptai, Pavol Vindt, Tomáš
Copyright Year	2021
Description	Copper anode furnace dust is waste by-product of secondary copper production containing zinc, lead, copper, tin, iron and many other elements. Hydrometallurgical Copper Anode Furnace dust recycling method was studied theoretically by thermodynamic calculations and the proposed method was verified experimentally on a laboratory scale. The optimum condition for leaching of zinc from dust was identified to be an ambient leaching temperature, a liquid/solid ratio of 10 and $H_{2}SO_{4}$ concentration of 1 mol/L. A maximum of 98.85% of zinc was leached under the optimum experimental conditions. In the leaching step, 99.7% of lead in the form of insoluble $PbSO_{4}$ was separated from the other leached metals. Solution refining was done by combination of pH adjustment and zinc powder cementation. Tin was precipitated from solution by pH adjustment to 3. Iron was precipitated out of solution after pH adjustment to 4 with efficiency 98.54%. Copper was selectively cemented out of solution (99.96%) by zinc powder. Zinc was precipitated out of solution by addition of $Na_{2}CO_{3}$ with efficiency of 97.31%. ZnO as final product was obtained by calcination of zinc carbonates.
Starting Page	36
e-ISSN	20754701
DOI	10.3390/met12010036
Journal	Metals
Issue Number	1
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2021-12-24
Access Restriction	Open
Subject Keyword	Metals Environmental Engineering Zinc Recycling Copper Anode Furnace Dust Recycling Industrial Waste Circular Economy Leaching Refining Precipitation Calcination Thermodynamics
Content Type	Text
Resource Type	Article

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