Direct Cementation and Dissolution of Copper in Di-(2-ethylhexyl) Phosphoric Acid
Abstract
The direct cementation of copper from a loaded D2EHPA 20% vol. in kerosene using zinc, zinc-lead alloy and iron metallic powders was studied. Copper was loaded into the organic solvent from an aqueous copper sulfate solution. Results indicated that copper is reduced spontaneously with relatively fast reaction rates. The effects of several operating parameters such as water content in the organic system, initial copper concentration, reductant surface area, oxygen and nitrogen atmosphere, intensity of the agitation and temperature on the galvanic stripping of copper were studied. For a better understanding of the electrochemical reactions involved in the galvanic stripping, the dissolution of metallic copper in the organic solvent was also studied. Copper did not dissolve unless a small amount of water was present in the organic system. The results and possible reaction mechanisms are discussed.
Recommended Citation
C. Flores and T. J. O'Keefe, "Direct Cementation and Dissolution of Copper in Di-(2-ethylhexyl) Phosphoric Acid," 4th International Conference COPPER 99-COBRE 99, vol. 4, pp. 345 - 359, The Minerals, Metals and Materials Society, Dec 1999.
Department(s)
Materials Science and Engineering
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 The Minerals, Metals and Materials Society, All rights reserved.
Publication Date
01 Dec 1999
