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

Tsimas, S; Merkos, P; Kakali, G; Moutsatsou-Tsima, A; Malami, Ch

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