Transformations of calcium sulphates in solidified carbonated volatile fluidized ashes

• Autorzy: Łączny M. J. , Bzowski Z.

Identyfikatory

DOI

10.1016/j.jsm.2017.11.003

• Języki publikacji: EN

Abstrakty

EN

Carbonation of volatile fluidized ashes with the use of carbon dioxide can be a means to their transformation into a product with a possible application as an additive to cement and concrete. Currently, due to its physical-chemical characteristics and particularly because of the high concentration of free calcium oxide, the possible applications of this product are highly limited, perhaps even none existent. A significant reduction or even the complete elimination of CaO can be achieved by its transformation into calcium carbonate. In carbonated volatile fluidized ashes, two components relevant to the binding time of mortar, as well as its durability, can be found: calcium carbonates and calcium sulphates. During the investigation it was assumed that calcium carbonate, being poorly water-soluble, would not react with the remaining components of the porous water of the volatile fluidized ash. Crystalline phases of calcium sulphates, anhydrite, gypsum and bassanite occurring in bound volatile fluidized ashes after carbonation demonstrate the possibility of crystallization in the presence of calcium carbonate. In particular, a change in the concentration of bassanite indicates that this phase, as a precursor to the crystallization of gypsum, may play a significant role in the process of binding carbonated volatile ashes.

Słowa kluczowe

EN

volatile fluidized ashes; carbonation; calcium sulphate

PL

lotny popiół fluidalny; karbonatyzacja; siarczan wapnia

• Wydawca: Elsevier ; Główny Instytut Górnictwa
• Czasopismo: Journal of Sustainable Mining
• Rocznik: 2017
• Tom: Vol. 16, iss. 4
• Strony: 151--155
• Opis fizyczny: Bibliogr. 20 poz.

Twórcy

autor

Łączny M. J.

• Central Mining Institute, Pl. Gwarków 1, 40-166 Katowice, Poland

autor

Bzowski Z.

• Central Mining Institute, Pl. Gwarków 1, 40-166 Katowice, Poland

Bibliografia

• 1. Albinami, A., & Willis, B. M. T. (1982). The Rietveld method in Neutron and X-ray power diffraction. Journal of Applied Crystallography, 15(4), 361-374.
• 2. Anthony, E. J., & Granatstein, D. L. (2001). Sulfation phenomena in fluidized bed combustion system. Progress in Energy and Combustion Science, 27(2), 215-236.
• 3. Bapat, J. D. (2013). Mineral admixtures in cement and concrete. Boca Raton: CRC Press.
• 4. Bish, D. L., & Post, J. E. (1993). Quantitative mineralogical analysis using the Rietveld full-pattern fitting method. American Mineralogist, 78(9e10), 932-940.
• 5. Bzowski, Z., & Michalik, B. (2009). Skład chemiczny i radioaktywność naturalna odpadów z kotłów fluidalnych opalanych węglem kamiennym [The chemical composition and the natural radioactivity of waste from fluidized bed boilers burning hard coal]. Wiadomości Górnicze, 60(2), 99-106.
• 6. Koornneef, J., Junginger, M., & Faaij, A. (2007). Development of fluidized bed combustion. Progress in Energy and Combustion Science, 33(1), 19-55.
• 7. Kowalska, S. (2013). Określenie ilościowego składu mineralnego skał zawierających minerały ilaste metodą Rietvelda [The qualification quantitative mineral composition of rocks containing clay minerals the Rietveld method]. Nafta-Gaz, 69(12), 894-902.
• 8. Kurdowski, W. (2010). Chemia cementu i betonu [Chemical cement and concrete]. Kraków: Wydawnictwo Stowarzyszenie Producentów Cementu.
• 9. Mahieux, P. Y., Aubert, J. E., Cyr, M., Coutand, M., & Husson, B. (2010). Quantitative mineralogical composition of complex mineral wastes e contribution of the Rietveld method. Waste Management, 30(3), 378-388.
• 10. Marcisz, P. (2008). Kotły fluidalne [The fluidized-bed boilers]. Retrieved January 2016, from www.elektrownie.wnp.pl.
• 11. Matschei, T., Lothenbach, B., & Glasser, F. O. (2007). The AFm phase in Portland cement. Cement and Concrete Research, 37(2), 118-130.
• 12. PN-EN. (2011). PN-EN 197-1 Cement. Część 1: Skład, wymagania i kryteria zgodności dotyczące cementów powszechnego użytku [Polish Standard: Cement. Part 1: Composition, specifications and compatibility criteria for common cements].
• 13. PN-EN. (2012). PN-EN 450-1 Popiół lotny do betonu. Część 1: Definicje, specyfikacje i kryteria zgodności [Polish Standard: Fly ash for concrete. Part 1: Definitions, specifications and compatibility criteria].
• 14. PN-EN. (2014). PN-EN 206 Beton - wymagania, właściwości, produkcja i zgodność [Polish Standard - concrete - specification, quality, production and compatibility].
• 15. Project. (2010). Projekt Badawczy Rozwojowy [Research Project Development]. No R04 013 01 „Betony na cementach z popiołem lotnym z kotłów fluidalnych” [“Concretes cements with the fly ash from fluidized bed boilers”]. Coordinator: A.M. Brandt, 2008-2010. Warszawa: IPPT PAN. Retrieved January 2016, from www.bluebox. ippt.pan.pl/~abrandt/sprawozdanie.pdf.
• 16. Sabir, B. B., Wild, S., & Bai, J. (2001). Metakaolin and calcined clays as pozzolans for concrete: A review. Cement & Concrete Composites, 23(6), 441-454.
• 17. Van Driessche, A. E. S., Benning, L. G., Rodriguez-Blanco, J. D., Ossorio, M., Bots, P., & García-Ruiz, J. M. (2012). The role and implications of bassanite as a stable precursor phase to gypsum precipitation. Science, 336(6077), 69-72.
• 18. Zhu, Q. (2013). Developments in circulating fluidised bed combustion. London: IEA Clean Coal Centre.
• 19. Łaskawiec, K., Małolepszy, J., & Zapotoczna-Sytek, G. (2011). Influence of fly ashes generated at burning hard and brown coal in fluidized boilers on AAC phase composition. Materiały Ceramiczne, 63(1), 88-92.
• 20. Łączny, J. M., Iwaszenko, S., Gogola, K., Bajerski, A., Janoszek, T., Klupa, A., et al. (2015). Study on the possibilities of treatment of combustion by-products from fluidized bed boilers into a product devoid of free calcium oxide. Journal of Sustainable Mining, 14(4), 164-172.

Uwagi

PL

Opracowanie w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)