Froth flotation performance evaluation: a schematic illustration and a numerical separation index

Androutsopoulos, GP

dc.contributor.author	Androutsopoulos, GP	en
dc.date.accessioned	2014-03-01T01:06:36Z
dc.date.available	2014-03-01T01:06:36Z
dc.date.issued	1986	en
dc.identifier.issn	0016-2361	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9495
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0022753876&partnerID=40&md5=ac6b788092251fd1219c48c757c1be0a	en
dc.subject	froth flotation	en
dc.subject	lignite	en
dc.subject	performance evaluation	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	COAL PREPARATION	en
dc.subject.other	LIGNITE - Flotation	en
dc.subject.other	FROTH FLOTATION	en
dc.subject.other	NUMERICAL SEPARATION INDEX	en
dc.subject.other	FLOTATION	en
dc.title	Froth flotation performance evaluation: a schematic illustration and a numerical separation index	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1986	en
heal.abstract	A graphical method is proposed for the assessment of the progress of flotation processes, in the form of an operating line (OL) on which operating points (OP) denote the compositions of the cumulative concentrates and of the tailings. The graph accommodates both direct and reverse flotation; a separation index (S) is defined which is associated with the operating points and is calculated from formulae for direct (SD) or reverse (SR) flotation. The formulae reflect concentrates and tailings compositions; the index has boundary values S = 1 for a pure component and S = 0 for a 1:1 mixture of ash and coal. Efficiencies of separation and optimum separation conditions are readily determined, and the increase in S provides a comparison between different processes. Flotation tests on fresh lignite are reported using three flotation systems. Recoveries of 60-98% were obtained with 9-14% ash reduction; in the best tests increases in the separation index varied between 0.18 and 0.32. © 1986.	en
heal.publisher	BUTTERWORTH-HEINEMANN LTD	en
heal.journalName	Fuel	en
dc.identifier.isi	ISI:A1986D088100015	en
dc.identifier.volume	65	en
dc.identifier.issue	7	en
dc.identifier.spage	968	en
dc.identifier.epage	974	en