Scale up possibilities for microwave leaching of chalcopyrite in ferric sulphate

Simple item page
dc.contributor.authorAl-Harahsheh M.
dc.contributor.authorKingman S.
dc.contributor.authorBradshaw S.
dc.date.accessioned2011-05-15T16:01:49Z
dc.date.available2011-05-15T16:01:49Z
dc.date.issued2006
dc.description.abstractThis paper presents a study on the effect of reactor size on the microwave leaching outcome of copper from chalcopyrite in Fe2(SO4)3-H2SO4 solution. Microwave leaching experiments were carried out in single mode cavity using reactors of two sizes (20 and 50 mm in diameter). The results of microwave experiments were compared with those obtained under conventional conditions. It was found that the copper recovery obtained under microwave conditions in the large reactor is comparable to those obtained conventionally. On the other hand, the copper recovery was higher when leaching was carried out in small reactor. It is suggested that the enhanced recovery in the small reactor is due to the selective heating of chalcopyrite coupled with the effect of microwave penetration depth. Computational results also suggest that the portion of reactor volume affected by the high power density is higher in the small reactor. Furthermore, microwave heating of ferric sulphate leaching solution in vessels of different sizes suggests the presence of a super heated layer close to the vessel walls caused by a small penetration depth. Based on experimental and modelling evidence the implications for the scale up for microwave leaching of chalcopyrite are discussed. © 2006 Elsevier B.V. All rights reserved.
dc.description.versionArticle
dc.identifier.citationInternational Journal of Mineral Processing
dc.identifier.citation80
dc.identifier.citation04-Feb
dc.identifier.issn3017516
dc.identifier.other10.1016/j.minpro.2006.04.003
dc.identifier.urihttp://hdl.handle.net/10019.1/12172
dc.subjectCopper
dc.subjectEnhanced recovery
dc.subjectHydrometallurgy
dc.subjectLeaching
dc.subjectMathematical models
dc.subjectMicrowaves
dc.subjectChalcopyrite leaching
dc.subjectMicrowave leaching
dc.subjectScale up
dc.subjectSelective heating
dc.subjectPyrites
dc.titleScale up possibilities for microwave leaching of chalcopyrite in ferric sulphate
dc.typeArticle
Files
Collections
Stellenbosch University - Scopus Publications