XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 3445
(1984) for test A, B and C, but the parameter value for
k1 for test D is significantly below that expected from the
kinetic model and the conditions at which the test was
performed.
CONCLUSIONS
This work has shown that the oxidation of iron might be
limited by the oxidation of ferrous ions, and that the oxida-
tion of ferrous ions might be limited by a reverse reaction.
These conclusions are suggested tentatively, and further
work is recommended.
REFERENCES
Mathews, C.T., and Robins, R.G. 1972. The oxidation of
aqueous ferrous sulphate solutions by molecular oxy-
gen. Proc. Aust. Inst. Min. Metall., 242: 47–56.
Huffman, R.E., and Davidson, N. 1956. Kinetics of fer-
rous iron-oxygen reaction in sulphuric acid solution. J.
Amer. Chem Soc. 78: 4836–4842.
Keenan, E.A. 1969. Bacterial beneficiation of uranium
materials. PhD Thesis, University fo New South Wales.
Cited in Mathews and Robins (1972).
Iwai, M., Majima, H., And Awakura, Y. 1982. Oxidation of
Fe(II) in sulfuric acid solutions with dissolved molecu-
lar oxygen. Metall. Trans. B, 13B: 311–318.
Chmielewski, T., Charewicz, W.A. 1984. The oxidation of
Fe(II) in aqueous sulphuric acid under oxygen pres-
sure. Hydrometall. 12: 21–30.
Verbaan, B. and Crundwell, F.K. 1986. An electrochemi-
cal model for the leaching of a sphalerite concentrate.
Hdrometall. 16: 345–359.
(1984) for test A, B and C, but the parameter value for
k1 for test D is significantly below that expected from the
kinetic model and the conditions at which the test was
performed.
CONCLUSIONS
This work has shown that the oxidation of iron might be
limited by the oxidation of ferrous ions, and that the oxida-
tion of ferrous ions might be limited by a reverse reaction.
These conclusions are suggested tentatively, and further
work is recommended.
REFERENCES
Mathews, C.T., and Robins, R.G. 1972. The oxidation of
aqueous ferrous sulphate solutions by molecular oxy-
gen. Proc. Aust. Inst. Min. Metall., 242: 47–56.
Huffman, R.E., and Davidson, N. 1956. Kinetics of fer-
rous iron-oxygen reaction in sulphuric acid solution. J.
Amer. Chem Soc. 78: 4836–4842.
Keenan, E.A. 1969. Bacterial beneficiation of uranium
materials. PhD Thesis, University fo New South Wales.
Cited in Mathews and Robins (1972).
Iwai, M., Majima, H., And Awakura, Y. 1982. Oxidation of
Fe(II) in sulfuric acid solutions with dissolved molecu-
lar oxygen. Metall. Trans. B, 13B: 311–318.
Chmielewski, T., Charewicz, W.A. 1984. The oxidation of
Fe(II) in aqueous sulphuric acid under oxygen pres-
sure. Hydrometall. 12: 21–30.
Verbaan, B. and Crundwell, F.K. 1986. An electrochemi-
cal model for the leaching of a sphalerite concentrate.
Hdrometall. 16: 345–359.