KINETICS AND MECHANISMS OF THE LEACHING OF LOW FE SPHALERITE

dc.contributor.author	Weisener C.G.
dc.contributor.author	Smart R.S.T.C.
dc.contributor.author	Gerson A.R.
dc.date.accessioned	2021-12-23T04:03:26Z
dc.date.available	2021-12-23T04:03:26Z
dc.date.issued	2003
dc.identifier	https://www.elibrary.ru/item.asp?id=1453408
dc.identifier.citation	Geochimica et Cosmochimica Acta, 2003, 67, 5, 823-830
dc.identifier.issn	0016-7037
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/33741
dc.description.abstract	The surface speciation and leaching kinetics of 38- to 75-μm sphalerite (0.45 wt.% Fe) particles reacted in O2 purged perchloric acid (at pH 1.0) at 25, 40, 60, and 85 °C over a leach period of 144 h were investigated. In all cases, an initial rapid leach rate is observed followed by a slower leach rate. These two leach regimes can each be adequately modeled using straight-line interpolation, and thus two activation energies (Ea) have been derived. Ea for the fast and slow Zn dissolution rates were 33 +/- 4 kJ mol-1 and 34 +/- 4 kJ mol-1 respectively, suggesting the same rate-determining step.
dc.subject	sphalerite
dc.title	KINETICS AND MECHANISMS OF THE LEACHING OF LOW FE SPHALERITE
dc.type	Статья

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