Fundamental considerations on the mechanisms of silver cementation onto zinc particles in the Merril-Crowe process.

@article{Gamboa2005FundamentalCO,
  title={Fundamental considerations on the mechanisms of silver cementation onto zinc particles in the Merril-Crowe process.},
  author={G Viramontes Gamboa and M Medina Noyola and A L{\'o}pez Valdivieso},
  journal={Journal of colloid and interface science},
  year={2005},
  volume={282 2},
  pages={
          408-14
        }
}
Studies on the Merrill-Crowe process as applied to silver recovery have shown that one half of the used zinc powder is wasted in water reduction at high cyanide concentrations, while the other half reduces silver ions from the cyanide solution. However, the cementation mechanisms as an electrochemical process taking place on the zinc surface do not explain the split of the electric current resulting from the anodic dissolution of zinc into two equal values. This study demonstrates that the… CONTINUE READING

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