Comparison of the anodic dissolution behavior of butte and transvaal chalcocite

Srinivasan, Vijaya; Parikh, R. S.; Liddell, K.C.

doi:10.1007/bf02656467

Cited by 1 publication

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The anodic dissolution mechanism of Cu 2 S is not as simple as shown by the authors mentioned above, because the reaction is more complex. Vitorge and Lamache 10 , who dissolved CuS 2 anodically, found Cu 1.92 S, Cu 1.77 S, Cu 1.60 S and Cu 1.31 S. Srinivasan et al 11 showed that the electrochemical behavior and the products of the dissolution will depend not only on the conditions of the process, but also on the origin of the copper sulfide. However, it can be accepted that this takes place in two successive steps, with the tension in the cells increasing to 0.6 V in the first step and to 1.6 V in the second:…”

Section: Introduction Anodic Dissolutionmentioning

confidence: 98%

Anodic Electrolytic Dissolution of Copper Sulphides Precipitated From Ammoniacal Leaching Media

Morales

Hevia

Santis

et al. 2009

J. Chil. Chem. Soc.

View full text Add to dashboard Cite

Anodic dissolution of synthetic chalcocite (previously obtained by copper precipitation with S and SO 2 in ammonia media) in two different electrolytic cells is described. One cell has a circular graphite anode placed horizontally, surrounded by a stainless steel cylinder as cathode, and the other has a rectangular basketshaped graphite anode, with a rectangular stainless steel cathode placed in front of it. The electrolysis was performed at 0.2 A and 50 °C, the electrolyte contained 20 to 40 g L-1 of Cu and 100 to 160 g L-1 of H 2 SO 4 , and the initial reactions took place at low potential (0.4-0.6 V) until the transformation of Cu 2 S into CuS, detected by the considerable increase in cell potential. Anodic and cathodic efficiencies greater than 100% and 95%, respectively, were obtained. The hight anodic efficiencie is due to faradic and chemical dissolution too. It is also shown that the (CuS) produced as waste material can replace elemental sulphur as copper precipitating agent in ammoniacal media.

show abstract

Section: Introduction Anodic Dissolutionmentioning

confidence: 98%