{"title":"Extraction of Yttrium from Ferruginous Sandstone, Southwestern Sinai, Egypt","authors":"H. M. Salman, O. Hussaini, N. Fattah, M. Mahmoud","doi":"10.1002/9781118888551.CH27","DOIUrl":null,"url":null,"abstract":"The Ferruginous sandstone ore was obtained from Ramlet Hemeyir area, Southwestern Sinai, Egypt,which contains 10%(REE) rare earth elements. A representative sample has been subjected to acid agitation leaching usingH 2SO4where 93%of the REE contentwas released bymixing the ground sample to (-100mesh) with concentrated H2SO4 at solid/liquid (S/L) ratio of 1/2 for 5h at a temperature ranged from(250 - 300oC). The REEwas precipitated in the oxalate formfromthe prepared sulfate leach liquor.Next selective extraction of 98%Ywas achieved by contactingYwas extracted by di-(2-ethylhexyl)phosphoric acid (D2EHPA) with the aqueous solution of nitric acid leaching of the REE cake. Stripping was done by hot H2O (80 oC). Finally, a precipitation with oxalic acid was done followed by ignition at 950oC.Ayield of 95%Yoxide was produced.","PeriodicalId":9757,"journal":{"name":"Chemical Technology: An Indian Journal","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2014-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Technology: An Indian Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/9781118888551.CH27","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
The Ferruginous sandstone ore was obtained from Ramlet Hemeyir area, Southwestern Sinai, Egypt,which contains 10%(REE) rare earth elements. A representative sample has been subjected to acid agitation leaching usingH 2SO4where 93%of the REE contentwas released bymixing the ground sample to (-100mesh) with concentrated H2SO4 at solid/liquid (S/L) ratio of 1/2 for 5h at a temperature ranged from(250 - 300oC). The REEwas precipitated in the oxalate formfromthe prepared sulfate leach liquor.Next selective extraction of 98%Ywas achieved by contactingYwas extracted by di-(2-ethylhexyl)phosphoric acid (D2EHPA) with the aqueous solution of nitric acid leaching of the REE cake. Stripping was done by hot H2O (80 oC). Finally, a precipitation with oxalic acid was done followed by ignition at 950oC.Ayield of 95%Yoxide was produced.
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