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, C

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, C	en
dc.date.accessioned	2014-03-01T01:18:23Z
dc.date.available	2014-03-01T01:18:23Z
dc.date.issued	2002	en
dc.identifier.issn	1013-9826	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14967
dc.subject	clinker	en
dc.subject	Portland	en
dc.subject	alinitic	en
dc.subject	sulfoaluminate	en
dc.subject	lignite waste	en
dc.subject	sintering	en
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.classification	Materials Science, Composites	en
dc.title	Study on the substitution of cement raw mix by rejected lignite from power station quarries	en
heal.type	journalArticle	en
heal.identifier.primary	10.4028/www.scientific.net/KEM.206-213.1855	en
heal.identifier.secondary	http://dx.doi.org/10.4028/www.scientific.net/KEM.206-213.1855	en
heal.language	English	en
heal.publicationDate	2002	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 CaOr 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.	en
heal.publisher	TRANS TECH PUBLICATIONS LTD	en
heal.journalName	EURO CERAMICS VII, PT 1-3	en
heal.bookName	KEY ENGINEERING MATERIALS	en
dc.identifier.doi	10.4028/www.scientific.net/KEM.206-213.1855	en
dc.identifier.isi	ISI:000172651400450	en
dc.identifier.volume	206-2	en
dc.identifier.spage	1855	en
dc.identifier.epage	1858	en