Abstract
The traditional alumina-silicate raw materials, for example, clays, in the precalcining technique of cement production, have been replaced by low grade and high silica content sandstones, shales, and industrial waste residues, including fly ashes, slag, and others. The results are the change of compositions and characteristics of raw materials applied and a great effect on cement calcination process and clinker formation. In this work, the cement clinker formation process of different alumina-silicate raw materials to replace clay raw material was studied by chemical analysis, X-ray diffraction, differential thermal analysis, and high temperature microscope based on the characteristics of the alumina-silicate raw materials. The formation heat of the clinker was determined by the acid dissolution method. Influence of different alumina-silicate raw materials on the clinker burnability and formation process was studied. The results show that the changing of alumina-silicate raw materials, especially using industrial waste residues, can reduce the formation temperature of high temperature liquid phases, improve the burnability of raw materials, reduce the formation temperature and formation heat of clinker. And this study also observed the formation temperature and transformation of high temperature liquid phases in the heating process of raw materials by high temperature microscope.
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Funded by the National Basic Research Program of China (“973” Program) (No.2009CB623102) and the National High Technology Research and Development Program of China (“863” Program) (No.2013AA031602)
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Wang, Y., Cui, S., Lan, M. et al. Influence of characteristics of alumina-silicate raw materials on the formation process of clinker. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 29, 966–971 (2014). https://doi.org/10.1007/s11595-014-1029-x
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DOI: https://doi.org/10.1007/s11595-014-1029-x