Titanium leaching from red mud by diluted sulfuric acid at atmospheric pressure

Agatzini-Leonardou, S; Oustadakis, P; Tsakiridis, PE; Markopoulos, Ch

dc.contributor.author	Agatzini-Leonardou, S	en
dc.contributor.author	Oustadakis, P	en
dc.contributor.author	Tsakiridis, PE	en
dc.contributor.author	Markopoulos, Ch	en
dc.date.accessioned	2014-03-01T01:29:21Z
dc.date.available	2014-03-01T01:29:21Z
dc.date.issued	2008	en
dc.identifier.issn	0304-3894	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19245
dc.subject	Leaching	en
dc.subject	Red mud	en
dc.subject	Sulfuric acid	en
dc.subject	Titanium	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	Alumina	en
dc.subject.other	Architectural design	en
dc.subject.other	Atmospheric pressure	en
dc.subject.other	Atmospherics	en
dc.subject.other	Electron microscopes	en
dc.subject.other	Electron microscopy	en
dc.subject.other	Electron optics	en
dc.subject.other	Extraction	en
dc.subject.other	Gas dynamic lasers	en
dc.subject.other	Hydrometallurgy	en
dc.subject.other	Imaging techniques	en
dc.subject.other	Leaching	en
dc.subject.other	Microscopic examination	en
dc.subject.other	Ore treatment	en
dc.subject.other	Pressure	en
dc.subject.other	Process design	en
dc.subject.other	Process engineering	en
dc.subject.other	Recovery	en
dc.subject.other	Scanning	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Solvent extraction	en
dc.subject.other	Statistical methods	en
dc.subject.other	Sulfur determination	en
dc.subject.other	Sulfuric acid	en
dc.subject.other	Titanium	en
dc.subject.other	Well stimulation	en
dc.subject.other	X ray diffraction analysis	en
dc.subject.other	alumina production	en
dc.subject.other	Atmospheric conditions	en
dc.subject.other	Bayer Process	en
dc.subject.other	Elsevier (CO)	en
dc.subject.other	In order	en
dc.subject.other	Leached residues	en
dc.subject.other	Leaching process	en
dc.subject.other	Main effects	en
dc.subject.other	preliminary treatment	en
dc.subject.other	Recovery efficiency	en
dc.subject.other	Red mud (RM)	en
dc.subject.other	Solid to liquid ratio	en
dc.subject.other	Statistical designs	en
dc.subject.other	titanium leaching	en
dc.subject.other	X ray diffraction (XRD)	en
dc.subject.other	Design of experiments	en
dc.subject.other	acid	en
dc.subject.other	aluminum	en
dc.subject.other	sulfuric acid	en
dc.subject.other	titanium	en
dc.subject.other	atmospheric pressure	en
dc.subject.other	leaching	en
dc.subject.other	mud	en
dc.subject.other	statistical analysis	en
dc.subject.other	sulfuric acid	en
dc.subject.other	titanium	en
dc.subject.other	article	en
dc.subject.other	atmospheric pressure	en
dc.subject.other	bayer chemical process	en
dc.subject.other	chemical interaction	en
dc.subject.other	chemical procedures	en
dc.subject.other	differential scanning calorimetry	en
dc.subject.other	leaching	en
dc.subject.other	metal recovery	en
dc.subject.other	scanning electron microscopy	en
dc.subject.other	statistical analysis	en
dc.subject.other	X ray diffraction	en
dc.subject.other	Aluminum Oxide	en
dc.subject.other	Atmospheric Pressure	en
dc.subject.other	Microscopy, Electron, Scanning	en
dc.subject.other	Sulfuric Acids	en
dc.subject.other	Titanium	en
dc.subject.other	X-Ray Diffraction	en
dc.title	Titanium leaching from red mud by diluted sulfuric acid at atmospheric pressure	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jhazmat.2008.01.054	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jhazmat.2008.01.054	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	Laboratory-scale research has focused on the recovery of titanium from red mud, which is obtained from bauxite during the Bayer process for alumina production. The leaching process is based on the extraction of this element with diluted sulfuric acid from red mud under atmospheric conditions and without using any preliminary treatment. Statistical design and analysis of experiments were used, in order to determine the main effects and interactions of the leaching process factors, which were: acid normality, temperature and solid to liquid ratio. The titanium recovery efficiency on the basis of red mud weight reached 64.5%. The characterization of the initial red mud, as well as this of the leached residues was carried out by X-ray diffraction, TG-DTA and scanning electron microscopy. (C) 2008 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Hazardous Materials	en
dc.identifier.doi	10.1016/j.jhazmat.2008.01.054	en
dc.identifier.isi	ISI:000258425900047	en
dc.identifier.volume	157	en
dc.identifier.issue	2-3	en
dc.identifier.spage	579	en
dc.identifier.epage	586	en