Formation of Portland clinker—studies on synthetic raw meals

Abstract

Synopsis On a series of laboratory made raw meals that contained only the four main oxides CaO, SiO2, Al2O3 and Fe2O3the sequence of reactions leading to the formation of Portland clinker was studied. Pellets made from raw meals of different composition were heated to different temperatures and analysed after quenching in air. It was found that the sequence of reactions taking place in the burning process and the temperatures at which new phases became detectable were virtually independent of the A/F ratio (Al2O3/Fe2O3) in the raw meal whereas the rate of C2S and C3S formation was distinctly accelerated with increasing iron content.

Preparation of Portland Cement Components by Poly(vinyl alcohol) Solution Polymerization

“…The powders prepared by this new application can make pure, synthetic, cement components of nanometer or submicrometer crystallite dimensions, high specific surface area, and extremely high reactivity at relatively low calcination temperatures, in comparison with conventional methods. 17 It is then possible to explore the realm of advanced cementitious materials and composites and its interdisciplinary interface with ceramic synthesis and processing. Once the hydraulicity of each component is determined as a function of the powder characteristics, it is possible to optimize various compositions for specific applications, such as enhanced setting speed, higher strength, and other desirable characteristics.…”

Diseño factorial en la investigación de la reactividad de los crudos de cemento

“…Esta es la causa de que muchos autores realizaran investigaciones sobre el tema de reactividad de crudos y aditivos mineralizadores y (o) fundentes a los crudos del cemento [2,3,4,5,6].…”

“…proceso de producción del cemento la más costosa, desde el punto de vista energético, es la fabricación del clinker en el horno rotatorio; la misma consume unos 3.140 kJ/kg de producto terminado [1].La optimización de la reactividad de la mezcla de crudos es una de las vías para aumentar la productividad del horno, obteniendo ahorros sustanciales de energía.Esta es la causa de que muchos autores realizaran investigaciones sobre el tema de reactividad de crudos y aditivos mineralizadores y (o) fundentes a los crudos del cemento [2,3,4,5,6]. …”