Decomposition of ilmenite by ZnO/ZnS: Enhanced leaching in acid solutions

dc.contributor.author	Arachchi, N.D.H.
dc.contributor.author	Peiris, G.S.
dc.contributor.author	Shimomura, M.
dc.contributor.author	Jayaweera, P.M.
dc.date.accessioned	2017-10-26T06:05:54Z
dc.date.available	2017-10-26T06:05:54Z
dc.date.issued	2016
dc.identifier.citation	Arachchi, N.D.H., Peiris, G.S., Shimomura, M., Jayaweera, P.M. (2016). "Decomposition of ilmenite by ZnO/ZnS: Enhanced leaching in acid solutions", Hydmmetallurgy.	en_US, si_LK
dc.identifier.uri	http://dr.lib.sjp.ac.lk/handle/123456789/6165
dc.description.abstract	Attached	en_US, si_LK
dc.description.abstract	Acid leaching of ilmenite (FeTi03) obtained from beach sand was found to be more effective when roasted with ZnO or ZnS at 900 °C. Remarkably higher- iron and titanium leaching rates were observed when compared with normal ilmenite in 5.0 M HC1 at 30 °C,'and 6.0 M H2SO4 at 110 °C, respectively. Roasting of ilmenite with ZnO or ZnS converts acid resistant FeTiOj to more reactive Fe20 3 and Zn2Ti04, resulting in enhanced leaching. Roasting FeTi03 with ZnS generates S02 as a byproduct, which can be used to produce H2S04 acid required in the sulfate process. Added ZnO or ZnS can be recovered as ZnO, therefore the overall process acts as a catalytic decomposition of FeTi03. Ores containing ZnS, such as sphalerite, are possible raw materials instead of ZnS, in a commercial application. XRD analysis confirms the formation of zinc titanate, and XPS results indicate the presence of both Fe2x/Fe3+ in naturally weathered ilmenite.
dc.language.iso	en_US	en_US, si_LK
dc.publisher	Hydmmetallurgy	en_US, si_LK
dc.subject	Ilmenite	en_US, si_LK
dc.subject	XPS	en_US, si_LK
dc.subject	XRD	en_US, si_LK
dc.subject	acid leaching	en_US, si_LK
dc.subject	roasting	en_US, si_LK
dc.subject	ZnO/ZnS	en_US, si_LK
dc.title	Decomposition of ilmenite by ZnO/ZnS: Enhanced leaching in acid solutions	en_US, si_LK
dc.type	Article	en_US, si_LK