Journal of Applied Electrochemistry

, Volume 36, Issue 5, pp 609–616 | Cite as

Electrochemical investigation of copper–DTPI interactions



The electrochemical behavior of copper in the absence and presence of a dithiophosphinate type collector, sodium diisobuthyldithiophosphinate (NaDTPI), was determined to investigate the interactions between a copper surface and NaDTPI as a function of pulp potential (Eh) and pH. The electrochemical studies were performed by Cyclic Voltammetry (CV) in the −355 to +1550 mV (SHE) potential range and at different pHs from slightly acidic to strongly alkaline conditions. The electrochemical studies were carried out for copper and DTPI alone as well as with DTPI added copper system. DTPI addition had considerable effects on the electrochemical behavior of copper. CuDTPI formation was the main reaction at all pHs through a mixed mechanism and oxidation of the copper surface was followed by a chemical reaction between copper and DTPI ions. Formation of a cupric metal-collector complex, Cu(DTPI)2, was observed only in acidic conditions in the form of an unstable surface compound.


adsorption copper cyclic voltammetry pH pulp potential redox reactions sodium dithiophosphinate 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    J. Pang and S. Chander, Miner. Metall. Process. August (1990) 149Google Scholar
  2. 2.
    Leppinen J.O. (1990) Int. J. Miner. Process. 30:245CrossRefGoogle Scholar
  3. 3.
    Woods R., Young C.A., Yoon R.H. (1990) Int. J. Miner. Process. 30:17CrossRefGoogle Scholar
  4. 4.
    Allison S.A., Goold L.A., Nicol M.J., Granville A. (1972) Metall. Trans. 3:2613CrossRefGoogle Scholar
  5. 5.
    Persson I. (1993) J. Coord. Chem. 32–4:261Google Scholar
  6. 6.
    J. Leppinen, FTIR and Flotation Investigation of Adsorption of Diethyl Dithiophosphate on Sulfide Minerals, Research Reports 726 (Technical Research Centre of Finland, Finland, 1991)Google Scholar
  7. 7.
    Grano S.R., Cnossen H., Skinner W., Pretidge W.A., Ralston J. (1997) Int. J. Miner. Process. 50:27CrossRefGoogle Scholar
  8. 8.
    Cytec, Mining Chemicals Handbook (Cytec Industries Inc, 2002) 293 ppGoogle Scholar
  9. 9.
    Hope G.A., Woods R., Boyd S., Watling K. (2003) Colloid. Surface. A 214:77CrossRefGoogle Scholar
  10. 10.
    Finkelstein N.P. (1997) Int. J. Miner. Process. 52:81CrossRefGoogle Scholar
  11. 11.
    Finkelstein N.P. (1976) In: Fuerstenau M.C. (eds) A.M. Gaudin Memorial Volume, Flotation, 1. American Institute of Mining, Metallurgical and Petroleum Engineers, New York, pp 414–451Google Scholar
  12. 12.
    Solecki J., Komosa A., Szczypa J. (1979) Int. J. Miner. Process. 6:221CrossRefGoogle Scholar
  13. 13.
    B.V. Stewart and N.P. Finkelstein, A Preliminary Investigation of the Flotation of Copper-Activated Sphalerite without the Use of Collectors, Report No. 1587 (S.A. National Institute for Metallurgy, 1973)Google Scholar
  14. 14.
    Wang X., Forssberg E., Bolin N.J. (1989) Miner. Process. Ext. Met. Rev. 4:139Google Scholar
  15. 15.
    Wong G., Lascelles D., Finch J.A. (2002) Miner. Eng. 15:573CrossRefGoogle Scholar
  16. 16.
    Ekmekci Z., Demirel H. (1997) Int. J. Miner. Process. 52:31CrossRefGoogle Scholar
  17. 17.
    Gardner J.R.. Woods R. (1979) Int. J. Miner. Process. 6:1CrossRefGoogle Scholar
  18. 18.
    Rickelton W.A. (1998) Hydrometallurgy 50:339CrossRefGoogle Scholar
  19. 19.
    Garrels R.M., Christ C.L. (1965) Solutions, Minerals and Equilibria. Harper & Row Publishers, New York, 450 ppGoogle Scholar
  20. 20.
    Chander S., Fuerstenau D.W. (1974) J. Electroanal. Chem. 56:217CrossRefGoogle Scholar
  21. 21.
    Mishra K.K., Osseo-Asare K. (1988) J. Electrochem. Soc. 135–8:1898CrossRefGoogle Scholar
  22. 22.
    Assaf H.F., Zaky A.M., El-Rehim S.S.A. (2002) Appl. Surf. Sci. 187:18CrossRefGoogle Scholar
  23. 23.
    Sedano A.B.A., Garcia M.L.T., Barbado M.D.V., Batanero P.S. (2004) J. Electroanal. Chem. 566:433CrossRefGoogle Scholar
  24. 24.
    Alexiev V., Iliev V.I., Yordanov N.D. (1984) J. Mol. Struct. 114:441CrossRefGoogle Scholar
  25. 25.
    Yordanov N.D., Antov L., Grampp G., (1998) Inorg. Chim. Acta 272:291CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Department of Mining EngineeringMiddle East Technical UniversityAnkaraTurkey

Personalised recommendations