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COMPARATIVE STUDY OF CHEMICAL COMPOSITION OF CLINKER FOR CEMENT PRODUCTION
Sanusi Nuhu, Musa Umar, Abdullahi Muhammad Illela Nasiru and Muhammad Sani

ABSTRACT
The chemical composition of the clinker directly influences the quality of cement produced. The clinker is the key intermediate product in cement production, and it is created by heating a mixture of raw materials to high temperatures in a kiln. The precise chemical composition of the clinker is critical for achieving the desired strength, setting time, and other properties of the final cement product. The objectives of this research were to obtain the chemical composition of cement clinker sample data after the x-ray diffraction (XRD) analysis from the quality control department of the two plants, to study the variation and its effect on cement modulus such as lime saturation factor (LSF), silica modulus (SM) and alumina modulus (AM) on cement performance to correlate the cement modulus and clinker minerals using plot chats. The data were obtained from the quality control department of BUA Sokoto Cement and Dangote Cement. Lime saturation factor, Silica modulus and Alumina modulus were also used for data analysis. The study showed similarities and differences between the two clinker samples considered in this study. It also highlighted that the constituents of clinker affect its properties and performance. Using plotted graphs, The study also showed the correlation between cement modulus and clinker minerals. The lime saturation factor range (97.20-102.65) % average Silica modulus of 2.21 % and average Alumina modulus of 1.53 % for BUA Sokoto cement. Compared to the lime saturation factor range (96.46-98.81) %, average Silica modulus of 2.19 % and average Alumina modulus of 1.63 % for Dangote cement, it explains the variation in energy consumption, setting time and strength of the clinker. It was also concluded that there is a relationship between cement modulus and clinker minerals. Also, the differences in chemical composition between the clinker samples may be attributed to variations in the raw materials used in the production process. Keywords: Cement, Clinker, Constituent, Composition, Modulus


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