Pilot-plant investigation of the leaching process for the recovery of scandium from red mud

Ochsenkuhn-Petropoulou, MTh; Hatzilyberis, KS; Mendrinos, LN; Salmas, CE

dc.contributor.author	Ochsenkuhn-Petropoulou, MTh	en
dc.contributor.author	Hatzilyberis, KS	en
dc.contributor.author	Mendrinos, LN	en
dc.contributor.author	Salmas, CE	en
dc.date.accessioned	2014-03-01T01:18:13Z
dc.date.available	2014-03-01T01:18:13Z
dc.date.issued	2002	en
dc.identifier.issn	0888-5885	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14867
dc.subject	Experimental Data	en
dc.subject	Ion Exchange	en
dc.subject	Iron	en
dc.subject	Liquid Liquid Extraction	en
dc.subject	Pilot Plant	en
dc.subject	Red Mud	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Agitations	en
dc.subject.other	Byproducts	en
dc.subject.other	Dissolution	en
dc.subject.other	Ion exchange	en
dc.subject.other	Leaching	en
dc.subject.other	Pilot plants	en
dc.subject.other	Scandium	en
dc.subject.other	Soils	en
dc.subject.other	Chemical engineering	en
dc.subject.other	aluminum oxide	en
dc.subject.other	iron	en
dc.subject.other	lanthanide	en
dc.subject.other	scandium	en
dc.subject.other	ion exchange	en
dc.subject.other	leaching	en
dc.subject.other	mathematical analysis	en
dc.subject.other	solid-solid separation	en
dc.subject.other	acidity	en
dc.subject.other	article	en
dc.subject.other	atomic absorption spectrometry	en
dc.subject.other	atomic emission spectrometry	en
dc.subject.other	ion exchange	en
dc.subject.other	leaching	en
dc.subject.other	purification	en
dc.subject.other	X ray fluorescence	en
dc.title	Pilot-plant investigation of the leaching process for the recovery of scandium from red mud	en
heal.type	journalArticle	en
heal.identifier.primary	10.1021/ie011047b	en
heal.identifier.secondary	http://dx.doi.org/10.1021/ie011047b	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	A pilot-plant process has been developed based on an innovative laboratory-scale method for the recovery of scandium that exists in economically interesting concentrations in red mud, the main byproduct of alumina production. This method includes acid leaching of the red mud pulp, ion-exchange separation of scandium and lanthanides from the co-leached main elements such as iron, and subsequent liquid-liquid extraction of the eluate for further scandium purification and enrichment. In this work, experimental and theoretical investigation of the pilot-scale leaching process was performed. The following parameters were tested: mode of agitation, solid-to-liquid ratio, acidity of the leachate, number of stages in the process, and pretreatment of red mud with concentrated acids in order to achieve optimum scandium recovery combined with low iron dissolution. Furthermore, by theoretical interpretation of the experimental data, a predictive correlation for the scandium leaching efficiency was developed.	en
heal.publisher	AMER CHEMICAL SOC	en
heal.journalName	Industrial and Engineering Chemistry Research	en
dc.identifier.doi	10.1021/ie011047b	en
dc.identifier.isi	ISI:000179161800027	en
dc.identifier.volume	41	en
dc.identifier.issue	23	en
dc.identifier.spage	5794	en
dc.identifier.epage	5801	en