Beneficiation of a Greek serpentinic nickeliferous ore Part II. Sulphuric acid heap and agitation leaching

Agatzini-Leonardou, S; Zafiratos, IG

dc.contributor.author	Agatzini-Leonardou, S	en
dc.contributor.author	Zafiratos, IG	en
dc.date.accessioned	2014-03-01T01:19:56Z
dc.date.available	2014-03-01T01:19:56Z
dc.date.issued	2004	en
dc.identifier.issn	0304-386X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15780
dc.subject	Agitation leaching	en
dc.subject	Heap leaching	en
dc.subject	Nickel laterite ores	en
dc.subject	Serpentine	en
dc.subject	Sulphuric acid	en
dc.subject.classification	Metallurgy & Metallurgical Engineering	en
dc.subject.other	Beneficiation	en
dc.subject.other	Cobalt	en
dc.subject.other	Concentration (process)	en
dc.subject.other	Filtration	en
dc.subject.other	Hydrometallurgy	en
dc.subject.other	Leaching	en
dc.subject.other	Mixing	en
dc.subject.other	Nickel compounds	en
dc.subject.other	Ore treatment	en
dc.subject.other	pH effects	en
dc.subject.other	Sulfuric acid	en
dc.subject.other	Agitation leaching	en
dc.subject.other	Heap leaching	en
dc.subject.other	Mineral processing	en
dc.subject.other	Nickel laterite ores	en
dc.subject.other	Serpentine	en
dc.title	Beneficiation of a Greek serpentinic nickeliferous ore Part II. Sulphuric acid heap and agitation leaching	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.hydromet.2004.05.006	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.hydromet.2004.05.006	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	Serpentinic laterite ore, after suitable mineral processing operations as described in Part I, was subjected to heap as well as atmospheric agitation leaching. The heap leach results showed that serpentinic laterites can be leached by this technique. The nickel and cobalt recoveries achieved were 60% and 45%, respectively, in 10 days. The sulphuric acid consumption amounted to 40 kg H2SO4/kg Ni. However, the effectiveness of leaching depended on the calcite content of the ore as this adversely affected the permeability of the heap. The agitation leach tests showed that the ore could be leached at atmospheric pressure without problems. Recoveries achieved were up to 74% for nickel and 51% for cobalt, after 2 h of leaching. The sulphuric acid consumption, depending on conditions, averaged 55 kg/kg Ni. Pulp mixing and filtration were excellent. (C) 2004 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Hydrometallurgy	en
dc.identifier.doi	10.1016/j.hydromet.2004.05.006	en
dc.identifier.isi	ISI:000224564200010	en
dc.identifier.volume	74	en
dc.identifier.issue	3-4	en
dc.identifier.spage	267	en
dc.identifier.epage	275	en