Synthetic rutile from a low-grade titania slag using sulphation-roasting process

- Organization:
- Society for Mining, Metallurgy & Exploration
- Pages:
- 6
- File Size:
- 301 KB
- Publication Date:
- Jan 1, 2005
Abstract
Upgrading of a low-grade titanium slag (~55% TiO2) with high silica, calcia, magnesia and iron contents has been studied using sulphation roasting technique using SO2/air gas mixture followed by hydrochloric acid leaching. XRD analysis of the sulphated slag reveals the presence of kennedyite (Fe2O3. MgO. 3TiO2), rutile (TiO2), calcium sulphate (CaSO4) and calcium silicate (3CaO.SiO2) phases. The residue after leaching contains mainly kennedyite, rutile phases and free silica with traces of calcium silicate phase. Synthetic rutile that has about 83% TiO2 can be produced at the optimum conditions. Thermodynamic calculations give rational explanations of the obtained results.
Citation
APA:
(2005) Synthetic rutile from a low-grade titania slag using sulphation-roasting processMLA: Synthetic rutile from a low-grade titania slag using sulphation-roasting process. Society for Mining, Metallurgy & Exploration, 2005.