dc.contributor.author | Haarberg, Geir Martin | |
dc.contributor.author | Yuan, Boyan | |
dc.date.accessioned | 2017-11-06T11:57:11Z | |
dc.date.available | 2017-11-06T11:57:11Z | |
dc.date.created | 2015-01-20T05:39:33Z | |
dc.date.issued | 2014 | |
dc.identifier.citation | ECS Transactions. 2014, 58 (20), 19-28. | nb_NO |
dc.identifier.issn | 1938-5862 | |
dc.identifier.uri | http://hdl.handle.net/11250/2464222 | |
dc.description.abstract | Our previous studies on the electrowinning of iron from hematite particles suspended in sodium hydroxide solutions demonstrated that iron was produced through a direct solid phase electrochemical reduction of the oxide particles. This suggests that the electro-deoxidation of a hematite powder pellet by the FFC type process should be possible in aqueous solutions at a low temperature. We investigated the electrochemical reduction of a solid hematite pellet cathode manufactured by conventional mechanical pressing followed by sintering process in concentrated sodium hydroxide solutions using a nickel inert anode at 110 °C. The experimental results indicated that hematite was reduced to iron metal. Propagation of the reduction reaction front through the oxide phase occurred at a high speed, and the rate-determining step was the diffusion of the oxygen ion through the shrinking cores of the oxide particle. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Electrochemical Society | nb_NO |
dc.title | Direct electrochemical reduction of hematite pellets in alkaline solutions | nb_NO |
dc.type | Journal article | nb_NO |
dc.description.version | submittedVersion | nb_NO |
dc.source.pagenumber | 19-28 | nb_NO |
dc.source.volume | 58 | nb_NO |
dc.source.journal | ECS Transactions | nb_NO |
dc.source.issue | 20 | nb_NO |
dc.identifier.doi | 10.1149/05820.0019ecst | |
dc.identifier.cristin | 1201774 | |
dc.relation.project | Norges forskningsråd: 236245 | nb_NO |
dc.relation.project | Norges forskningsråd: 232489 | nb_NO |
dc.description.localcode | This is a submitted manuscript of an article published by Electrochemical Society in ECS Transactions, 2014 | nb_NO |
cristin.unitcode | 194,66,35,0 | |
cristin.unitname | Institutt for materialteknologi | |
cristin.ispublished | true | |
cristin.fulltext | preprint | |
cristin.qualitycode | 1 | |