The use of wastes as alternative fuels in cement production

Karagiannis, J; Ftikos, Ch; Nikolopoulos, P

dc.contributor.author	Karagiannis, J	en
dc.contributor.author	Ftikos, Ch	en
dc.contributor.author	Nikolopoulos, P	en
dc.date.accessioned	2014-03-01T02:51:50Z
dc.date.available	2014-03-01T02:51:50Z
dc.date.issued	2008	en
dc.identifier.issn	17433541	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35677
dc.subject	Alternative fuels	en
dc.subject	Portland cement clinker	en
dc.subject	Trace elements	en
dc.subject	Wastes	en
dc.subject.other	alternative fuel	en
dc.subject.other	cement	en
dc.subject.other	conference proceeding	en
dc.subject.other	oxidation	en
dc.subject.other	recycling	en
dc.subject.other	waste management	en
dc.subject.other	X-ray diffraction	en
dc.subject.other	Animalia	en
dc.subject.other	Gossypium hirsutum	en
dc.title	The use of wastes as alternative fuels in cement production	en
heal.type	conferenceItem	en
heal.identifier.primary	10.2495/WM080121	en
heal.identifier.secondary	http://dx.doi.org/10.2495/WM080121	en
heal.publicationDate	2008	en
heal.abstract	The high burning temperature, the long retention time inside the kiln, the oxidizing atmosphere, the ash absorption in the clinker and the chemical conditions render the cement kilns ideal installations where wastes can be burned safely. Consequently, some of the wastes may be potential candidates to be used as alternative fuels in cement production that boasts a lot of environmental benefits. These wastes include a variety of materials like used tires, animal meal, refused derived fuels (RDF), solvents, used oils, biomass etc. During the clinker production process, the organic part of the wastes is totally destroyed whereas the inorganic compounds and heavy metals are incorporated in the interstitial phase or substitute calcium or silicon in the silicate phases of the clinker. However, due to their origin these wastes introduce into the cement making process several trace elements that may affect the process itself as well as the properties of clinker. This work investigates the effects of the use of biomass (cotton stalks) and RDF on the properties of Portland cement clinker. In this respect, ash of these two waste materials was introduced in the raw mix in diverse proportions. The clinkerization characteristics and the microstructure of the lab prepared raw mixes and of the reference mixture were investigated by Differential Thermal Analysis- Thermogravimetry (DTA/TG), Optical Microscopy (OM) and X-Ray Diffraction (XRD). The derived results suggest that both waste materials, RDF and cotton stalks can be used as an alternative to replace fossil fuels, such as coal, for the production of Portland cement clinker.	en
heal.journalName	WIT Transactions on Ecology and the Environment	en
dc.identifier.doi	10.2495/WM080121	en
dc.identifier.volume	109	en
dc.identifier.spage	105	en
dc.identifier.epage	114	en