Titania recovery from low-grade titanoferrous minerals

Manhique, A.J. (Arao Joao); Focke, Walter Wilhelm; Madivate, Carvalho

dc.contributor.author	Manhique, A.J. (Arao Joao)
dc.contributor.author	Focke, Walter Wilhelm
dc.contributor.author	Madivate, Carvalho
dc.date.accessioned	2012-09-19T06:53:06Z
dc.date.available	2012-09-19T06:53:06Z
dc.date.issued	2011-10
dc.description.abstract	In this study a novel process for extraction of titanium valuables from its minerals is presented. The process entails roasting of titanium ore with alkaline metal salt, hydrolysing fused cake and dissolution in acid. Optimum conditions were found to be 1 h fusion at 850 °C, using 2:1 mole ratio, NaOH:FeTiO4, irrespective of the particle size interval used in this work. It was found that under these conditions ≈80% of titanium was recovered. Na0.75Fe0.75Ti0.25O2, NaFeTiO4 and Na2Fe2Ti3O10 were the dominant phases at this temperature. The presence of these phases is viewed as beneficial to the economics of the process, it consumes less NaOH. Fusions conducted at 550 °C or below produced chiefly binary phases, Na2TiO3 and NaFeO4, reducing process economy. Optimum leaching conditions were S/L=0.26, leaching at 75 °C, for 15 min. 85% of NaOH was recovered, under these conditions. Leaching obeys shrinking core mechanism model.	en_US
dc.description.sponsorship	The University Eduardo Mondlane, Mozambique, the THRIP program of the Department of Trade and Industry, the National Research Foundation of South Africa as well as Xyris Technology CC.	en_US
dc.description.uri	http://www.elsevier.com/locate/hydromet	en_US
dc.identifier.citation	Arao J. Manhique, Walter W. Focke & Carvalho Madivate, Titania recovery from low-grade titanoferrous minerals, Hydrometallurgy, vol. 109, no. 3-4, pp. 230-236 (2011), doi: 10.1016/j.hydromet.2011.07.008	en_US
dc.identifier.issn	0304-386X (print)
dc.identifier.issn	1879-1158 (online)
dc.identifier.other	10.1016/j.hydromet.2011.07.008
dc.identifier.uri	http://hdl.handle.net/2263/19812
dc.language.iso	en	en_US
dc.publisher	Elsevier	en_US
dc.rights	© 2011 Elsevier. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Hydrometallurgy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Hydrometallurgy, vol 109, issue 3-4, October 2011, doi: 10.1016/j.hydromet.2011.07.008.	en_US
dc.subject	Ilmenite	en_US
dc.subject	Titania	en_US
dc.subject	Alkali fusion	en_US
dc.title	Titania recovery from low-grade titanoferrous minerals	en_US
dc.type	Postprint Article	en_US