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Predicting iron ore sinter strength through partial least square regression (PLSR) analysis of X-ray diffraction patterns

  • Nathan A.S. Webster (a1), Mark I. Pownceby (a1), Natalie Ware (a2) and Rachel Pattel (a1)

Abstract

The decrease in quality of Australian iron ore, coupled with the demand for more efficient energy use, means that closer monitoring and optimisation of process conditions for iron ore sinter production is required. Here, the suitability of using partial least-squares regression analysis of powder X-ray diffraction data, collected for iron ore sinter samples, for the prediction of iron ore sinter strength has been further assessed. In addition, a preliminary assessment of the effect of 2θ range on the quality of prediction has been made. For the purposes of process control, the level of correlation between predicted strength and actual sinter strength would inform an operator whether or not the process was operating within the acceptable limits, or whether there was a potential problem requiring further investigation or rapid intervention. Reducing the 2θ range was found to reduce the level of correlation between predicted and actual strength, to a point where the particular analysis may no longer be suitable for process control.

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Corresponding author

a) Author to whom correspondence should be addressed. Electronic mail: nathan.webster@csiro.au

References

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Clout, J. M. F. and Manuel, J. R. (2003). ‘Fundamental investigations of differences in bonding mechanisms in iron ore sinter formed from magnetite concentrates and hematite ores,’ Powder Technol. 130, 393399.
Fransen, M. J. (2004). ‘1- and 2-dimensional detection systems and the problem of sample fluorescence in X-ray diffractometry,’ Adv. X-ray Anal. 47, 224231.
König, U., Degen, T., and Norberg, N. (2014). ‘PLSR as a new XRD method for downstream processing of ores: – case study: Fe2+ determination in iron ore sinter,’ Powder Diffr. 29S1, 578583.
König, U. and Norberg, N. (2015). ‘Iron Sinter Process Control Using X-ray Diffraction,’ Proc. Iron Ore 2015 (The Australasian Institute of Mining and Metallurgy, Melbourne), pp. 5360.
Mumme, W. G., Clout, J. M. F., and Gable, R. W. (1998). ‘The crystal structure of SFCA-I, Ca3.18Fe3+ 14.66Al1.34Fe2+ 0.82O28, a homologue of the aenigmatite structure type, and new crystal structure refinements of β-CFF, Ca2.99Fe3+ 14.30Fe2+ 0.55O25 and Mg-free SFCA, Ca2.45Fe3+ 9.04Al1.74Fe2+ 0.16Si0.6O20 ,’ Neues Jahrb. Miner. Abh. 173, 93117.
Patrick, T. R. C. and Lovel, R. R. (2001). ‘Leaching dicalcium silicates from iron ore sinter to remove phosphorus and other contaminants,’ ISIJ Int. 41, 128135.
Pownceby, M. I., Webster, N. A. S., Manuel, J. R., and Ware, N. (2015). ‘Iron Ore Geometallurgy – Examining the Influence of Ore Composition on Sinter Phase Mineralogy and Sinter Strength,’ Proceedings Iron Ore 2015 (The Australasian Institute of Mining and Metallurgy, Melbourne), pp. 579586.
Pownceby, M. I., Webster, N. A. S., Manuel, J., and Ware, N. (2016). ‘The influence of ore composition on sinter phase mineralogy and strength,’ Trans. Inst. Min. Metall. C 125, 140148.
Raven, M. and Birch, S. (2017). ‘Development of an XRD Standard Method for Determining the Quantitative Mineralogy of Iron Ores – I. Results of an International Round Robin,’ Abstracts of the 2017 Australian X-ray Analytical Association Workshops, Conf. and Exhibition (AXAA-2017), February 5–9 2017, Melbourne, Australia, OC22.
Ware, N., Manuel, J. R., Raynlyn, T., and Lu, L. (2013). ‘Melting Behaviour of Hematite and Goethite Fine Ores and its Potential Impact on Sinter Quality,’ Proc. Iron Ore 2013 (The Australasian Institute of Mining and Metallurgy, Melbourne), pp. 485486.
Webster, N. A. S., O'Dea, D. P., Ellis, B. G., and Pownceby, M. I. (2017a). ‘Effects of gibbsite, kaolinite and Al-rich goethite as alumina sources on silico-ferrite of calcium and aluminium (SFCA) and SFCA-I iron ore sinter bonding phase formation,’ ISIJ Int. 57, 4147.
Webster, N. A. S., Pownceby, M. I., Ware, N., and Pattel, R. (2017b). ‘Predicting Iron Ore Sinter Strength Through X-ray Diffraction Analysis,’ Proc. Iron Ore 2017 (The Australasian Institute of Mining and Metallurgy, Melbourne), pp. 331334.

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