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DIGITAL.CSIC
Article . 2011 . Peer-reviewed
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Investigaciones en las zonas ricas en CaO del sistema CaO-SiO2-P2O5

Authors: Diouri, A.; Boukhari, A.; Aride, J.; Puertas, Francisca; Vázquez, T.;

Investigaciones en las zonas ricas en CaO del sistema CaO-SiO2-P2O5

Abstract

[ES]Se estudia con detalle la influencia del P2O5 sobre las composiciones mineralógicas en fases silicato y en un crudo industrial. Asimismo se estudian algunas composiciones de la zona rica en cal del sistema CaO-SiO2-P2O5 utilizando reactivos químicos. Los resultados demuestran que, a presión atmosférica y recinto abierto, las composiciones dentro de los límites CaO = 69,5-70,1; P2O5= 16,2-19,5; SiO2 = 11,1-13,6 (% en peso) dan a 1000ºC la composición mineralógica siguiente: HAp, β-C2S, C5PS; pueden desarrollar una alta resistencia química en "chemically bonded ceramics". A altas temperaturas (1400°C) producen una elevada proporción de silicocarnotita (C5PS S) y la fase 2C2.C3P. Con la adición de fosfato a una determinada dosificación de crudo industrial (CaO = 62,66; SiO2 = 17,33; Al2O3 = 4,88; Fe2O3 = 4,29; P2O5 = 8,73; MgO = 2,09 -% en peso-) se forma, a 1350°C, un clinker que contiene una alta proporción de α-C2S que reemplaza al C3S. Este clinker puede tener buenas aplicaciones en la obtención de cementos belíticos.

[EN]detailed study has been carried out to explain the influence ofPp^ in silicate phases and in industrial raw meals upon their mineralogical compositions. Some compositions in the lime rich portion of the CaO-SiO^-Pp^ system are studied using laboratory reactants. The results showed that the compositions lying in the range of CaO - 69,5 - 70,1; Pp^ = 16,2 -19,5; SiO^ - 11,1 - 13,6 (wt%) give, at 1000 °C, the mineralogical composition (HAp, fi-Cp, Cf*S) which can develop a high strength in chemically bonded ceramics. At high temperature (1400 "C) these compositions give a large amount of silicocarnotite (C^S ) and 2Cp.C^phase. A selected composition of the industrial raw meal with added phosphate: CaO = 62,66; SiO^ -= 17,33; Aip^ - 4,88; Fep^ = 4,29; Pp^ = 8,73; MgO = 2,09(wt%)forms at 1350 'Ca clinker containing high amount of a -CJS to replace C^. Such a clinker may have good applications in the synthesis of active belite cement.

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Spain
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Keywords

P2O5, CaO

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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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