Leaching residue of nickeliferous laterites as a source of iron concentrate

Stamboliadis, E; Alevizos, G; Zafiratos, J

dc.contributor.author	Stamboliadis, E	en
dc.contributor.author	Alevizos, G	en
dc.contributor.author	Zafiratos, J	en
dc.date.accessioned	2014-03-01T02:42:52Z
dc.date.available	2014-03-01T02:42:52Z
dc.date.issued	2004	en
dc.identifier.issn	0892-6875	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/31106
dc.subject	Iron ore	en
dc.subject	Leaching	en
dc.subject	Magnetic separation	en
dc.subject	Ore mineralogy	en
dc.subject	Tailings	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Mineralogy	en
dc.subject.classification	Mining & Mineral Processing	en
dc.subject.other	Concentration (process)	en
dc.subject.other	Costs	en
dc.subject.other	Hydrometallurgy	en
dc.subject.other	Iron alloys	en
dc.subject.other	Iron deposits	en
dc.subject.other	Iron metallurgy	en
dc.subject.other	Kaolin	en
dc.subject.other	Leaching	en
dc.subject.other	Magnetic separation	en
dc.subject.other	Nickel compounds	en
dc.subject.other	Particle size analysis	en
dc.subject.other	Quartz	en
dc.subject.other	Slags	en
dc.subject.other	Solutions	en
dc.subject.other	Solvent extraction	en
dc.subject.other	Tailings	en
dc.subject.other	Electrowinning	en
dc.subject.other	Laterites	en
dc.subject.other	Iron ores	en
dc.title	Leaching residue of nickeliferous laterites as a source of iron concentrate	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/j.mineng.2003.08.015	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.mineng.2003.08.015	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	The lateritic nickeliferous iron ore deposits of Central and Northern Greece (Euboea, Locris, Boeotia and Kastoria) provide the feed material for the production of an iron-nickel alloy at a pyrometallurgical plant located in Larymna. Due to the low quality of feed ore, about 0.90-1.00% nickel, the metallurgical processing cost is high and the quantity of the slag produced and disposed amounts to millions of tonnes yearly. During the past 20 years, the Laboratory of Metallurgy of NTUA has been developing a novel method of hydrometallurgical processing of laterites, based on heap leaching of the ore with dilute sulphuric acid. Nickel is recovered from the pregnant leach liquor by solvent extraction and electrowinning. The solid leach residue is a material consisting mainly of hematite, quartz and chromite. The present research is an investigation on upgrading of this residue to a saleable iron concentrate. The upgrading, if proved successful, will potentially relieve the environment from the disposal of such a large quantity of slag, which today is produced by pyrometallurgical processing of laterites. The accomplishment of this target faces problems related mainly to the fine dissemination and interweaving of mineralogical phases and the present work is focused on addressing the associated mineralogical issues. (C) 2003 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Minerals Engineering	en
dc.identifier.doi	10.1016/j.mineng.2003.08.015	en
dc.identifier.isi	ISI:000189090900016	en
dc.identifier.volume	17	en
dc.identifier.issue	2	en
dc.identifier.spage	245	en
dc.identifier.epage	252	en