Correlation Models Applications for Raw Materials Blending Proces in Cement Manufacturing

Abstract

The blending process of raw materials such as limestone and clay of cement manufacturing play an important role in cement quality, it is aiming to mix a variety of materials to produce cement raw meal for the kiln. One cement manufacture is ensuring the appropriate chemical composition of the fundamental problems in the cement raw meal. A raw meal with a good fineness and well-controlled chemical composition by a control system can improve the cement quality. The first step in designing a control system for the process is obtaining an appropriate mathematical correlations.

This study has been conducted on the eastern region which parallel to the coastal strip in the northeastern of Libyan coast including four locations namely from west to east as follows; Martoba, Um Al Rozm, Ain Al Ghazalh and Beer Al Ashahb areas, between Longitudes 31º16'' 24' and 32º 56'' 28' and Latitudes 20º 18'' 53' and 25º 09'' 08'.

The objective of this study is the assessment the raw materials represented by limestone and clay throughout calculating the quality control models such as silica modulus (SM), alumina modulus (AM), hydraulic modulus (HM), lime saturation factor (LSF) liquid phase (L. phase) and Le Chatelier and Michaels Indices. On the other hand, the appropriate blending ratios have been calculated using Le Chatelier–Newberry and Eckel Formulae. The obtained results revealed that the raw materials under consideration can be used for cement manufacture because of they contain high amount of lime (CaO) and lower content of impurities.