Iron-containing phases in fly ashes from different combustion systems

Szumiata, Tadeusz; Gzik-Szumiata, Małgorzata; Brzózka, Katarzyna; Górka, Bogumił; Gawroński, Michał; Świetlik, Ryszard; Trojanowska, Marzena

doi:10.1515/nuka-2015-0030

Abstract

The investigations of iron-containing phases existing in fly ashes were performed using transmission Mössbauer spectrometry. The examined samples of fly ashes were collected from different coal combustion systems, that is, stoker-fired boiler in municipal heating plant and pulverized coal boiler in power plant. Several phases are identified in the samples: iron oxides, paramagnetic aluminosilicate glass with Fe³⁺ ions and Al₂O₄-type spinel with Fe²⁺ ions. It was pointed out that proportions of contents of phases strongly depend not only on the combustion temperature but also on the way of ash collection.

References

1. Szumiata, T., Brzózka, K., Górka, B., Gawroński, M., Gzik-Szumiata, M., Świetlik, R., & Trojanowska, M. (2014). Iron speciation in coal fly ashes – chemical and Mössbauer analysis. Hyperfine Interact., 226, 483–487. DOI: 10.1007/s10751-013-0950-2.10.1007/s10751-013-0950-2
Search in Google Scholar
2. Szumiata, T., Gawroński, M., Górka, B., Brzózka, K., Świetlik, R., Trojanowska, M., & Strzelecka, M. (2013). Chemical, magnetic and Mössbauer effect analysis of road dust from expressway. Nukleonika, 58, 107–110.
Search in Google Scholar
3. Bajukov, O. A., Anshits, N. N., Petrova, M. I., Balaev, A. D., & Anshits, A. G. (2009). Composition of ferrospinel phase and magnetic properties of microspheres and cenospheres from fly ashes. Mater. Chem. Phys., 114, 495–503. DOI: 10.1016/j.matchemphys.2008.09.061.10.1016/j.matchemphys.2008.09.061
Search in Google Scholar
4. Nishida, T., Tokunaga, M., Sugata, Y., & Kubuki, S. (2005). Mössbauer study of semiconducting and ferrimagnetic fly ash-recycled glass. J. Radioanal. Nucl. Chem., 266, 171–177. DOI: 10.1007/s10967-005-0889-0.10.1007/s10967-005-0889-0
Search in Google Scholar
5. Jończy, I., & Stanek, J. (2013). Phase composition of metallurgical slag studied by Mössbauer spectroscopy. Nukleonika, 58, 127–131.
Search in Google Scholar
6. Gomes, S., François, M., Abdelmoula, M., Refait, Ph., Pellissier, C., & Evrard, O. (1999). Characterization of magnetite in silico-aluminous fly ash by SEM, TEM, XRD, magnetic susceptibility, and Mössbauer spectroscopy. Cement. Concr. Res., 29, 1705–1711. DOI: 10.1016/S0008-8846(99)00133-7.10.1016/S0008-8846(99)00133-7
Search in Google Scholar
7. Javed, A., Szumiata, T., Morley, N. A., & Gibbs, M. R. J. (2010). An investigation of the effect of structural order on magnetostriction and magnetic behaviour of Fe-Ga thin films. Acta Mater., 58, 4003–4011. DOI: 10.1016/j.actamat.2010.03.023.10.1016/j.actamat.2010.03.023
Search in Google Scholar
8. Szumiata, T., Górka, B., Brzózka, K., Gawroński, M., Gzik-Szumiata, M., Javed, A., Morley, N. A., & Gibbs, M. R. J. (2013). Mössbauer study of vacuum annealed Fe₁₀₀₋_xGa_x (10 ≤ x ≤ 35) thin films. Nukleonika, 58, 25–28.
Search in Google Scholar
9. Taneja, S. P. (2004). Mössbauer studies of thermal power plant coal and fly ash. Hyperfine Interact., 153, 83–90. 10.1023/B:HYPE.0000024715.55347.fe.10.1023/B:HYPE.0000024715.55347.fe
Search in Google Scholar
10. Vandenberghe, R. E., de Resende, V. G., & De Grave, E. (2009). Mössbauer effect study of fly and bottom ashes from an electric generating plant. Hyperfine Interact., 191, 11–16. DOI: 10.1007/s10751-009-9978-8.10.1007/s10751-009-9978-8
Search in Google Scholar
11. Vandenberghe, R. E., de Resende, V. G., da Costa, G. M., & De Grave, E. (2010). Study of loss-on-ignition anomalies found in ashes from combustion of iron-rich coal. Fuel, 89, 2405–2410. DOI: 10.1016/j.fuel.2010.01.022.10.1016/j.fuel.2010.01.022
Search in Google Scholar
12. Zyryanov, V. V., Petrov, S. A., & Matvienko, A. A. (2011). Characterization of spinel and magnetospheres of coal fly ashes collected in power plants in the former USSR. Fuel, 90, 486–492. DOI: 10.1016/j.fuel.2010.10.006.10.1016/j.fuel.2010.10.006
Search in Google Scholar

Iron-containing phases in fly ashes from different combustion systems

Abstract

Paradigm

My account