A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Use of fluidized bed combustion ash and other industrial wastes as raw materials for the manufacture of calcium sulphoaluminate cements
Calcium sulphoaluminate cements, mainly composed by 4CaO-3Al2O3-SO3 and 2CaOSiO2, are special hydraulic binders which require limestone, bauxite and gypsum as natural raw materials for their manufacture. In order to save bauxite and natural gypsum, it has been explored the possibility of using, among the raw mix components, FBC waste together with pulverised coal fly ash or anodization mud and, when necessary, flue gas desulphurization gypsum. Mixtures containing limestone (29 - 39%), FBC waste (30 - 44%), pulverised coal fly ash (0 - 13%) or anodization mud (0 - 32%), bauxite (0 - 18%) and flue gas desulphurization gypsum (0 - 8%) were heated for 2 hours in a laboratory electric oven at temperatures ranging from 1150 to 1300 deg C. The X-ray diffraction patterns on the burnt products generally showed a good conversion of the reactants and a high selectivity degree towards 4CaO-3Al2O3-SO3, particularly at 1250 deg C.
Use of fluidized bed combustion ash and other industrial wastes as raw materials for the manufacture of calcium sulphoaluminate cements
Calcium sulphoaluminate cements, mainly composed by 4CaO-3Al2O3-SO3 and 2CaOSiO2, are special hydraulic binders which require limestone, bauxite and gypsum as natural raw materials for their manufacture. In order to save bauxite and natural gypsum, it has been explored the possibility of using, among the raw mix components, FBC waste together with pulverised coal fly ash or anodization mud and, when necessary, flue gas desulphurization gypsum. Mixtures containing limestone (29 - 39%), FBC waste (30 - 44%), pulverised coal fly ash (0 - 13%) or anodization mud (0 - 32%), bauxite (0 - 18%) and flue gas desulphurization gypsum (0 - 8%) were heated for 2 hours in a laboratory electric oven at temperatures ranging from 1150 to 1300 deg C. The X-ray diffraction patterns on the burnt products generally showed a good conversion of the reactants and a high selectivity degree towards 4CaO-3Al2O3-SO3, particularly at 1250 deg C.
Use of fluidized bed combustion ash and other industrial wastes as raw materials for the manufacture of calcium sulphoaluminate cements
Einsatz von Wirbelschichtverbrennungsasche und anderer Industrieabfälle als Rohstoffe für die Herstellung von Calciumsulfoaluminat-Zementen
Marroccoli, M. (author) / Montagnaro, F. (author) / Pace, M.L. (author) / Telesca, A. (author) / Valenti, G.L. (author)
2009
6 Seiten, 6 Bilder, 3 Tabellen, 24 Quellen
Conference paper
English
Calcium sulphoaluminate cements made from fluidized bed combustion wastes
| British Library Conference Proceedings | 2000
Hydration of calcium sulphoaluminate cements
| Online Contents | 1996
High-performance and low-CO2 cements based on calcium sulphoaluminate
| Tema Archive | 2010
| British Library Conference Proceedings | 2008
Calcium sulphoaluminate cements made with phosphogypsum: Production issues and material properties
| Online Contents | 2014