TY - JOUR
T1 - The kinetics of dissolution of copper and iron in aqueous cupric ammine solutions
AU - Uchida, Satoshi
AU - Takemura, Ichiro
AU - Tokuda, Masanori
AU - Osseo-Asare, K.
PY - 1996
Y1 - 1996
N2 - The dissolution rate of metallic copper plate in aqueous cupric ammine solutions was studied at 0.05-1.0 mol/ CuSO4 concentration, 0-3000 rpm rotation speed and temperatures between 10-90°C. The dissolution rate was mainly controlled by chemical reaction at the temperature below 30°C, and by diffusion of cupric complex at temperatures higher than 40°C. It was found that the dissolution rate of copper increases with an increase in temperature and rotation speed, while a maximum rate was observed for increasing Cu(II) concentration. The effect of different anion showed significant results on dissolution rate of copper and iron, and carbonate ion was found to prevent the corrosion of iron. The selective dissolution of copper from iron scrap was suggested.
AB - The dissolution rate of metallic copper plate in aqueous cupric ammine solutions was studied at 0.05-1.0 mol/ CuSO4 concentration, 0-3000 rpm rotation speed and temperatures between 10-90°C. The dissolution rate was mainly controlled by chemical reaction at the temperature below 30°C, and by diffusion of cupric complex at temperatures higher than 40°C. It was found that the dissolution rate of copper increases with an increase in temperature and rotation speed, while a maximum rate was observed for increasing Cu(II) concentration. The effect of different anion showed significant results on dissolution rate of copper and iron, and carbonate ion was found to prevent the corrosion of iron. The selective dissolution of copper from iron scrap was suggested.
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U2 - 10.2355/isijinternational.36.522
DO - 10.2355/isijinternational.36.522
M3 - Article
AN - SCOPUS:0030365013
VL - 36
SP - 522
EP - 527
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
SN - 0915-1559
IS - 5
ER -