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HomeMaterials Science ForumMaterials Science Forum Vol. 946Theory of Copper-Electrolyte Slimes Decoppering in...

Theory of Copper-Electrolyte Slimes Decoppering in the Presence of Hydrogen Peroxide

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Abstract:

The problem of copper leaching from copper-electrolyte slimes is discussed. To intensify the long and costly process, it is proposed to use a leaching system containing sulfuric acid and hydrogen peroxide as an oxidizing agent. The chemical transformations possible variants at the treatment of slime under the specified conditions and the thermodynamic parameters of the predicted reactions are considered. Solution composition effect on the copper dissolution rate at room temperature was studied in the presence of hydrogen peroxide using the rotating disc technique. It is found that dissolution rate constant at using hydrogen peroxide slightly inferior to dissolution rate constant under autoclaved conditions in an oxygen atmosphere.

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Materials Science and Metallurgical Technology

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Periodical:

Materials Science Forum (Volume 946)

Pages:

585-590

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.946.585

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Online since:

February 2019

Authors:

Vladimir G. Lobanov, Konstantin D. Naumov*, A.A. Korolev

Keywords:

Autoclave, Copper Dissolution, Decoppering, Electrolyte Slimes, Hydrogen Peroxide, Sulfuric Acid

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© 2019 Trans Tech Publications Ltd. All Rights Reserved

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