Effects of IM and Chlorine Contents on Cement Clinker

Abstract

The cement industry uses various industrial by-products as raw materials and fuel for cement clinker. Most of industrial by-products with chlorine can affect clinker properties. In this study, the mineralogical properties of clinker as chlorine content, especially alite and belite mineral properties and burnability were examined. The burnability of clinker was better as the chlorine content increased and the best results were obtained at clinker with 2,000ppm chlorine. Free-CaO content decreased by about 37% at 2,000ppm compared to 0ppm chlorine. Alite size increased slightly as the chlorine content increased, and became smaller as IM increased. XRD peak intensity of alite increased up to 1,000ppm chlorine content under IM 1.5 and 1.7 conditions, but slightly decreased at 2,000ppm. But alite peak intensity at 2,000ppm was higher than that of 0ppm. From the above results, it was confirmed that IM and chlorine content can change the clinker mineral size and also change the XRD peak intensity.