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Model for the Calculation of the Concentration of Dissolved Hematite during Hydrogen Peroxide Leaching of Iron Oxide Ore

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DOI: 10.4236/jmmce.2009.85030    4,815 Downloads   6,087 Views   Citations

ABSTRACT

Model for the calculation of the concentration of dissolved haematite during hydrogen peroxide leaching of iron oxide ore has been derived. The model was found to depend on both the % concentration of dissolved iron and weight input of iron oxide ore from experiment. The validity of the model is rooted on the expression %Fe2O3 ≈ %Fe√(μ)1/3 where both sides of the relationship are correspondingly almost equal. The deviation of the model-predicted concentration of dissolved haematite from the corresponding experimental values is less than 30% which is quite within the acceptable range of deviation limit of experimental results. The model indicates that the dissolved % ratio of extreme oxidation stage of iron to that of its extreme reduction stage is approximately equal to one-sixth (1/6th) power of the weight input of iron oxide ore during the leaching process.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

C. Nwoye, C. Nwakwuo, C. Nlebedim, U. Nwoye, R. Umana and G. Obasi, "Model for the Calculation of the Concentration of Dissolved Hematite during Hydrogen Peroxide Leaching of Iron Oxide Ore," Journal of Minerals and Materials Characterization and Engineering, Vol. 8 No. 5, 2009, pp. 339-347. doi: 10.4236/jmmce.2009.85030.

References

[1] Panias, D., Taxiarchou, M., Paspaliaris, I., and Kontopoulos, A., 1996, “Mechanism of dissolution of iron oxides in aqueous oxalic acid.” Hydrometallurgy, Vol. 42, pp. 257-265.
[2] Taxiarchour, M., Panias, D., Doumi, I., Paspaliaris, I., and Kontopoulos, A., 1997, “Removal of iron from silica sand by leaching with oxalic acid.” Hydrometallurgy, Vol. 46, pp. 215-227.
[3] Taxiarchou, M., Parnias, D., Douni. I., Paspaliaris, I., and Kontopoulous, A., 1997, “Dissolution of haematite in acidic oxalate solutions.” Hydrometallurgy, Vol. 44, pp. 287-299.
[4] Lee, S. O., Tran, T., Park, Y.Y., Kim, S. J., and Kim, M.J., 2006a, “Study on the kinetics of iron Leaching by oxalic acid.” Int. J. Miner. Process, Vol. 80, pp. 144-152.
[5] Ambikadevi, V. R., and Lalithambika, M., 2000, “Effects of organic acids on ferric iron removal from iron-stained kaolinite.” Appl. Clay Sci., Vol. 16, pp. 133-145.
[6] Cepria, G., Uson, A., Perez-Arantgui, J., and Castillo, J. R., 2003, “Identification of Fe(III) oxide and hydroxyl-oxides by voltammetry of immobilized microparticles.” Anal. Chim. Acta., Vol 477, pp. 157-168.
[7] Stumm.,W., and Furrer, G., 1987, “The dissolution of oxides and aluminum silicates: examples of surface-coordination-controlled-kinetics.” Aquatic Surface Chemistry. J Wiley and Sons, New York, pp. 97-219.
[8] Banwart, S., Davies, S., and Stumm, W., 1989, “The role of oxalate in accelerating the reductive dissolution of haematite (a-Fe2O3) by ascorbate.” Colloids Surf. Vol. 39, pp. 303-309.
[9] Pourbaix, M., 1958, Atlas of Electrochemical Equilibria in Aqueous Solution, Pergamon Press.
[10] Lee, S. O., Tran, T., Park, Y.Y., Kim, S.J., and Kim, M.J., 2006b, “Study on the kinetics of iron Leaching by oxalic acid.” Int. J. Miner Process, Vol. 80, pp.144-152.
[11] Nwoye, C. I., 2008, “Model for computational analysis of dissolved haematite and heat absorbed by oxalic acid solution during leaching of iron oxide ore, J. Eng.& App. Sci., Vol. 4, pp. 22-25.
[12] Dimitrijevic, M., Antonijevic, M. M., and Dimitrijevic, V., 1999, “Investigation of the kinetics of pyrite oxidation by hydrogen peroxide in hydrochloric acid solutions.” Min. Eng., Vol. 12, pp. 165-174.
[13] Nwoye, C. I., 2006, SynchroWell Research Work Report, DFM Unit, No. 2021196, pp. 28-43.
[14] Kanevskii, E. A., and Filippov, A. P., 1963, “Influence of the ionic composition of solutions of Fe(iii) of the solution of uranium dioxide.” Soviet Radiochemistry (Eng. Trans. Of Radiokhimiya).
[15] McKibben, M.A., 1984, Ph.D Thesis, Pennsylvania State University.
[16] Bailey, L. K., and Peter, E., 1976, Can. Metall. Q., Vol. 15, pp. 333-344.
[17] Gerlach, J., Hahne, and H., Pawlek, F., 1966, Erzmetall, Vol. 19, pp. 66-74.
[18] McKay, D. R., and Halpern, J., 1958, Trans Metall. Soc. AIME, Vol. 6, pp. 301-309.
[19] Vracar, R. Z., 1987, Prikl.Khim. Vol. 60, pp. 1458-465.
[20] Nwoye, C. I., 2009, “Model for computational analysis of quantity of heat absorbed by hydrogen peroxide solution relative to weight-input of iron oxide ore during leaching.” J. Eng.& App. Sc., Inter. Res. J. Eng. Sc. Tech., Vol. 5, pp. 40-52.
[21] Nwoye, C. I., 2006, SynchroWell Research Work Report, DFM Unit, No. 2021196, pp. 28-43.

  
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