Leaching of a manganese ore by acidic ferrous sulfate and chloride solutions - A kinetic approach

Neou-Syngouna, P; Farmakis, E

dc.contributor.author	Neou-Syngouna, P	en
dc.contributor.author	Farmakis, E	en
dc.date.accessioned	2014-03-01T01:45:58Z
dc.date.available	2014-03-01T01:45:58Z
dc.date.issued	1997	en
dc.identifier.issn	00442658	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24815
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-3943062956&partnerID=40&md5=82b0d58d02ba252905f5bb4d6966ba85	en
dc.title	Leaching of a manganese ore by acidic ferrous sulfate and chloride solutions - A kinetic approach	en
heal.type	journalArticle	en
heal.publicationDate	1997	en
heal.abstract	In this paper, the leaching of a Greek manganese ore with sulfate and chloride solutions in various temperatures values is studied and the kinetics of manganese extraction is approximated. A -30+60 Mesh fraction was leached with acidic ferrous sulfate and chloride solutions (0.1M Fe2+, 0.2M H+) at temperatures ranging from 22 to 80 °C. The other conditions, which were kept constant, were: pulp density 1%, agitation speed 630 rpm. The kinetic results have been analysed by using a diagnostic equation of general use and the shrinking core model. Diffusion was found to be the rate controlling step of the leaching process. From the Arrhenius plot the activation energy has been calculated equal to 1.27 Kcal/mole for chloride solution. The calculation of the activation energy, which was made for the chloride solution by using the initial rates, gave a value of 4.01 Kcal/mole.	en
heal.journalName	Erzmetall: Journal for Exploration, Mining and Metallurgy	en
dc.identifier.volume	50	en
dc.identifier.issue	4	en
dc.identifier.spage	261	en
dc.identifier.epage	267	en