Influence of Characteristics of Alumina-silicate Raw Materials on the Formation Process of Clinker
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2014年第5期
论文作者：王亚丽 CUI Suping LAN Mingzhang TIAN Guiping LIU Lingling
文章页码：966 - 971
摘 要：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alumina-silicate raw materials, for example, clays, in the precalcining technique of cement production, have been replaced by low grade and high silica content sandstones, shales, and industrial waste residues, including fl y ashes, slag, and others.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. Infl uence of different alumina-silicate raw materials on the clinker burnability and formation process was studied. The results show that the changing of aluminasilicate 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.
王亚丽，CUI Suping，LAN Mingzhang，TIAN Guiping，LIU Lingling
School of Materials Science and Engineering, Beijing University of Technology
摘 要：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alumina-silicate raw materials, for example, clays, in the precalcining technique of cement production, have been replaced by low grade and high silica content sandstones, shales, and industrial waste residues, including fl y ashes, slag, and others.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. Infl uence of different alumina-silicate raw materials on the clinker burnability and formation process was studied. The results show that the changing of aluminasilicate 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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