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

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 wit...

Full description

Saved in:
Bibliographic Details
Published in:Journal of hazardous materials 2008-09, Vol.157 (2), p.579-586
Main Authors: Agatzini-Leonardou, S., Oustadakis, P., Tsakiridis, P.E., Markopoulos, Ch
Format: Article
Language:English
Subjects:
Aluminum Oxide - chemistry
Applied sciences
Atmospheric Pressure
Chemical engineering
Crystallization, leaching, miscellaneous separations
Exact sciences and technology
Leaching
Microscopy, Electron, Scanning
Pollution
Red mud
Sulfuric acid
Sulfuric Acids - chemistry
Titanium
Titanium - chemistry
X-Ray Diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2008.01.054