A Novel Iron Oxidation Process in Zinc Leaching Solution by Ozone

Qian Kun Jing; Xing Yu Liu; Jian Kang Wen

doi:10.4028/www.scientific.net/AMR.900.35

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A Novel Iron Oxidation Process in Zinc Leaching Solution by Ozone
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 900A Novel Iron Oxidation Process in Zinc Leaching...

A Novel Iron Oxidation Process in Zinc Leaching Solution by Ozone

Abstract:

In the zinc hydrometallurgy process, iron is usually present in leach solutions and its elimination is a major operational problem. The first step of iron removal is iron oxidation by MnO₂, but this process have some disadvantages such as the cost is relatively high and decreased the current efficiency in the electro-winning stage. In this paper, a new iron oxidation process in zinc leaching solution by ozone oxidation was conducted and evaluated. The results showed that Fe²⁺ concentration decreased from 7.45 g/L to 0.51 g/L in 80min at pH 3. Oxidation of Fe²⁺ by O₃ is controlled by chemical reaction. O₃ dissolve rate, pH and initial iron concentration are key parameters for this process. Our finding indicated the potential application of O₃ oxidation in iron removal process of zinc hydrometallurgy.

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Periodical:

Advanced Materials Research (Volume 900)

Pages:

35-38

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.900.35

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Online since:

February 2014

Authors:

Qian Kun Jing*, Xing Yu Liu, Jian Kang Wen

Keywords:

Iron Oxidation, Ozone, Zinc Hydrometallurgy

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