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Study on the substitution of cement raw mix by rejected lignite from power station quarries

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dc.contributor.author Tsimas, S en
dc.contributor.author Merkos, P en
dc.contributor.author Kakali, G en
dc.contributor.author Moutsatsou-Tsima, A en
dc.contributor.author Malami, Ch en
dc.date.accessioned 2014-03-01T01:17:10Z
dc.date.available 2014-03-01T01:17:10Z
dc.date.issued 2001 en
dc.identifier.issn 10139826 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/14382
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-17044442601&partnerID=40&md5=a25c8d4ee21c0660d0b2b01fef988b77 en
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-17044442601&partnerID=40&md5=a25c8d4ee21c0660d0b2b01fef988b77 en
dc.subject Alinitic en
dc.subject Clinker en
dc.subject Lignite waste en
dc.subject Portland en
dc.subject Sintering en
dc.subject Sulfoaluminate en
dc.subject.other Power station quarries en
dc.subject.other Differential scanning calorimetry en
dc.subject.other Lignite en
dc.subject.other Limestone en
dc.subject.other Quarries en
dc.subject.other Sintering en
dc.subject.other Thermogravimetric analysis en
dc.subject.other X ray diffraction analysis en
dc.subject.other Cements en
dc.title Study on the substitution of cement raw mix by rejected lignite from power station quarries en
heal.type journalArticle en
heal.publicationDate 2001 en
heal.abstract This paper comprises the study of the partial substitution of the Portland, alinitic and sulfoaluminate cements raw mix, by the rejected lignite fractions coming from i) their treatment by Selective Reduction of Size (SRS) method and ii) their rejection during their exploitation due to their low calorific value. The fines derived from the application of SRS method are enriched in inorganic material having mineralogical and chemical composition very similar to cement raw meal. Besides the calorific value of the contained organic portion, can contribute to the energy demand for the burning process. The results are strengthened by the use of DSC, TG and XRD methods as well as by the determination of the CaO1 content. It is concluded that the rejected lignites can replace the Portland cement raw mix up to 40% and the alinitic and sulfoaluminate raw mix up to 20%. The burning of the organic material promotes the decomposition of the limestone and the early sintering reactions. The contribution of these fractions on alinitic and sulfoaluminate cements is also discussed in this study. It is concluded that the rejected fraction can replace the cement raw mix by 20-40% w/w depending on the clinker type. The addition of the rejected lignite does not inhibit the usual sintering reactions and the formation of the main clinker constituents. © 2002 Trans Tech Publications, Switzerland. en
heal.journalName Key Engineering Materials en
dc.identifier.issue 213 PART 3 en
dc.identifier.spage 1855 en
dc.identifier.epage 1858 en


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