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Study the Critical Role of Admixtures in Cement Production: The Optimum State of Cassiterite (SnO<sub>2</sub>) Addition as a Natural Mineralizer-Oxide Influencing the Cement Properties
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Advances in Chemical Engineering and Science·Volume 01 (2011)·Pages 215–223·Published 26 October 2011·DOI10.4236/aces.2011.14031
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Abstract
In this work we evaluate the role of a natural mineralizer-oxide like cassiterite (SnO<sub>2</sub>) on the cement properties. In particular, we study the effect of different quantities of SnO<sub>2</sub> with 0.5, 1.0, 1.5 and 2.0 wt% on burnability of industrial raw mix by free lime evaluation. We obtain four datasets, with successive increase of temperature at 1250℃, 1350℃, 1400℃ and 1450℃. We study the produced cassiterite-added clinker with X-ray diffraction (XRD), thermal analysis (DTA) and scanning electron microscopy (SEM). Though, we characterize the new phases formed and whether, adding excess SnO<sub>2</sub> is promote forms of C<sub>3</sub>S, C<sub>2</sub>S influencing the final quality of cement.
KeywordsCement PropertiesCassiteriteBurnabilityHydration
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