Model for Quantitative Evaluation and Prediction of the Concentration of Phosphorus Removed during Pyro-Hydro Beneficiation of Haematite

Abstract

This paper presents a model derived for quantitative evaluation and prediction of the concentration of phosphorus removed during pyro-hydro beneficiation of iron oxide ore. Potassium hydroxide was used as the leaching solution and the reaction vessel containing the solution and ore was heated at a temperature of 600℃ for 10 minutes. The results of the investigation indicates that the model; P = (e0.7827) S predicts the concentration of phosphorus removed, based on the concentration of sulphur simultaneously removed. It was observed that the validity of the model is rooted in the expression lnP = lnN + lnS where both sides of the expression are approximately equal to 4. The maximum deviation of the model-predicted concentration of removed phosphorus from the corresponding concentration obtained from the experiment was less than 3%. The concentrations of phosphorus removed per unit mass-input of iron oxide ore as obtained from experiment and derived model are 0.8917 and 1.0354 mg/kg g-1 respectively. Similarly, the concentrations of phosphorus removed per unit concentration of removed sulphur as obtained from experiment and derived model are 1.8838 and 2.1874 mg/kg (mg/kg)-1 respectively. This implies that the concentration of phosphorus removed is approximately equal to the concentration of simultaneously removed sulphur during the beneficiation process.

Share and Cite:

C. Nwoye, M. Menkiti, E. Obidiegwu and N. Nwankwo, "Model for Quantitative Evaluation and Prediction of the Concentration of Phosphorus Removed during Pyro-Hydro Beneficiation of Haematite," Journal of Minerals and Materials Characterization and Engineering, Vol. 10 No. 7, 2011, pp. 637-650. doi: 10.4236/jmmce.2011.107049.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] ℃ Chapman, W. A. P., (1972) Workshop Technology, part 1, 5th edition, Edward Arnold, London, p31-51.
[2] BOF Steel making-Theory. Iron and Steel Society, 2:145-147
[3] Nwoye, C. I., C. N. Mbah., C. C. Nwakwuo., and A. I. Ogbonna. (2010) Model for Quantitative Analysis of Phosphorus Removed during Leaching of Iron Oxide Ore in Oxalic Acid Solution. JMMCE, 9(4):331-341.
[4] Nwoye, C. I. (2009) Model for Evaluation of the Concentration of Dissolved Phosphorus during Leaching of Iron Oxide Ore in Oxalic Acid Solution. JMMCE, 8(3):181-188.
[5] Nwoye, C. I., Agu, P. C., Mark, U., Ikele, U. S., Mbuka, I. E., and Anyakwo, C. N. (2008) Model for Predicting Phosphorus Removal in Relation to Weight of Iron Oxide Ore and pH during Leaching with Oxalic Acid. Inter. J. Nat. Appl. Sc., 4(3): 292-298
[6] Nwoye, C. I. (2008) Model for predicting the Time of Dissolution of Pre-quantified Concentration of Phosphorus during Leaching of Iron Oxide Ore in Oxalic Acid. Inter. J. Nat. Appl. Sc., 4(3):168-174.
[7] Nwoye, C. I. (2006) SynchroWell Research Work Report, DFM Unit, No 2561178, 66-83.
[8] Nwoye, C. I. and Ndlu, S. (2009) Model for Predictive Analysis of the Concentration of Phosphorus Removed during Leaching of Iron Oxide Ore in Sulphuric Acid Solution JMMCE, 8(4):261-270.
[9] Anyakwo, C. N., and Obot, O.W. (2008) Phosphorus Removal from Nigeria`s Agbaja Iron Ore by Aspergillus niger, IREJEST 5(1), 54-58
[10] Nwoye, C. I. (2009) Model for Predicting the Concentration of Phosphorus Removed during Leaching of Iron Oxide Ore in Oxalic Acid Solution. J. Eng. & Appl. Sc. (in press).
[11] Odesina, I. A. (2003) Essential Chemistry, 1st Edition, Lagos, pp 169-186.
[12] Nwobodo, C. C. (2009) Leaching of Iron from Its Ore Using Potassium Hydroxide. B. Eng. Project. Federal University of Technology, Owerri. Nigeria.
[13] Nwoye, C. I. (2008) C-NIKBRAN; Data Analytical Memory.

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.