Utilization of alumina red mud for synthesis of inorganic polymeric materials

Dimas, DD; Giannopoulou, IP; Panias, D

dc.contributor.author	Dimas, DD	en
dc.contributor.author	Giannopoulou, IP	en
dc.contributor.author	Panias, D	en
dc.date.accessioned	2014-03-01T01:32:23Z
dc.date.available	2014-03-01T01:32:23Z
dc.date.issued	2009	en
dc.identifier.issn	0882-7508	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20104
dc.subject	Geopolymers	en
dc.subject	Inorganic polymers	en
dc.subject	Red mud	en
dc.subject.classification	Metallurgy & Metallurgical Engineering	en
dc.subject.classification	Mining & Mineral Processing	en
dc.subject.other	Alkaline conditions	en
dc.subject.other	Alumina plants	en
dc.subject.other	Alumina red mud	en
dc.subject.other	Apparent density	en
dc.subject.other	Bayer process	en
dc.subject.other	Construction sectors	en
dc.subject.other	Geopolymerization	en
dc.subject.other	Geopolymers	en
dc.subject.other	Individual particles	en
dc.subject.other	Metakaolin	en
dc.subject.other	Metal silicates	en
dc.subject.other	Polymeric material	en
dc.subject.other	Red mud	en
dc.subject.other	Semicrystalline	en
dc.subject.other	Silica concentrations	en
dc.subject.other	Solid-to-liquid ratio	en
dc.subject.other	Structural elements	en
dc.subject.other	Alkali metals	en
dc.subject.other	Alkalinity	en
dc.subject.other	Alumina	en
dc.subject.other	Building materials	en
dc.subject.other	Caustic soda	en
dc.subject.other	Chemical reactions	en
dc.subject.other	Compressive strength	en
dc.subject.other	Construction industry	en
dc.subject.other	Fire resistance	en
dc.subject.other	Fireproofing	en
dc.subject.other	Particles (particulate matter)	en
dc.subject.other	Silica	en
dc.subject.other	Silicates	en
dc.subject.other	Surface treatment	en
dc.subject.other	Water absorption	en
dc.subject.other	Inorganic polymers	en
dc.title	Utilization of alumina red mud for synthesis of inorganic polymeric materials	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/08827500802498199	en
heal.identifier.secondary	http://dx.doi.org/10.1080/08827500802498199	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	Red mud is a residue coming from the metallurgical treatment of bauxite with the Bayer process. Million of tons of red mud are produced annually worldwide and disposed of on land, degrading vast areas. Therefore, red mud utilization is a first-priority issue for any alumina plant. In the present work, the potential use of red mud for synthesis of inorganic polymeric materials through geopolymerization process was studied. The main focus was the production of inorganic polymeric materials that could be used in the construction sector as artificial structural elements such as massive bricks. The geopolymerization process involves a chemical reaction between red mud and alkali metal silicate solution under highly alkaline conditions. The product of this reaction is an amorphous to semi-crystalline polymeric structure, which binds the individual particles of red mud transforming the initial granular material to a compact and strong one. The effect of main synthesis parameterslike solid-to-liquid ratio, caustic soda as well as soluble silica concentrations, and metakaolin additionon the properties of red mud-based inorganic polymeric materials was investigated. The results showed that the produced materials have high compressive strength, very low water absorption, satisfactory apparent density, and excellent fire resistance. Therefore, this work proved that the red mud-based inorganic polymeric materials have promising properties and have the potential to be used as artificial structural elements in the construction sector.	en
heal.publisher	TAYLOR & FRANCIS INC	en
heal.journalName	Mineral Processing and Extractive Metallurgy Review	en
dc.identifier.doi	10.1080/08827500802498199	en
dc.identifier.isi	ISI:000266201300002	en
dc.identifier.volume	30	en
dc.identifier.issue	3	en
dc.identifier.spage	211	en
dc.identifier.epage	239	en