Ceramics-Silikáty 60, (4) 344 - 352 (2016) |
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CZECH FLUID SULFOCALCIC ASH AND FLY ASH
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Škvára František 1, Šulc Rostislav 2, Snop Roman 3, Zlámalová Cílová Zuzana 1, Peterová Adéla 1, Kopecký Lubomír 4, Formáček Petr 2
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1 Department of Glass and Ceramics, Faculty of Chemical Technology, University of Chemistry and Technology Prague
2 Department of Building Technology, Faculty of Civil Engineering, Czech Technical University in Prague
3 CEZ Group, Energetic Products Ltd., Hostivice
4 Department of Mechanics, Faculty of Civil Engineering, Czech Technical University in Prague
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Keywords: Fluid sulfocalcic ash, Fly ash, hydration of ashes
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Sulfocalcic ash is formed during the fluidized bed combustion of coal in the presence of limestone. It differs from classical fly ash by its composition and properties. Sulfocalcic ash contains free CaO, CaSO₄ and partially sintered aluminosilicates. In contact with water, it produces Ca(OH)₂, expansive ettringite and a small amount of the CSH phase. There is little information about these ashes in the literature. At present, the possibility of using fluid sulfocalcic ashes is quite limited because of the formation of expansive ettringite. More research in the field of sulfocalcic ashes is a necessity because increasing quantities of this product are rejected by the energy-generation industry. |
Record in: Scopus | Web of Science |
 PDF (3.3 MB) |
doi: 10.13168/cs.2016.0051
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