Froth Flotation of Copper and Copper Compounds from Fine Fractions of Waste Incineration Bottom Ashes. Issue 1 (30th September 2016)

• Record Type: Journal Article
• Authors: Breitenstein, Boris; Elwert, Tobias; Goldmann, Daniel; Haas, Andrea; Schirmer, Thomas; Vogt, Volker
• Other Names: Bertau Martin sponsoringEditor.; Bart Hans‐Jörg sponsoringEditor.
• Is Part Of: Chemie Ingenieur Technik. Volume 89:Issue 1/2(2017)
• Page Start: 97
• Page End: 107
• Publication Date: 2016-09-30
• Subjects: Copper recovery -- Froth flotation -- Municipal solid waste incineration bottom ash; Chemical engineering -- Patents -- Periodicals; Chemical engineering -- Periodicals; Chemical industry -- Periodicals; Chemistry, Technical -- Periodicals; 660.05
• DOI: 10.1002/cite.201600017
• Languages: English
• ISSNs: 0009-286X

Abstract

Abstract: In Germany about 5 million tons of municipal solid waste incineration (MSWI) bottom ashes are treated for metal recovery annually. With the actual processing metal recovery is realized down to 2 mm. The fractions < 2 mm are utilized without metal recovery. Due to high residual concentrations of non‐ferrous metals in these fractions, especially Cu, several thousand tons of metals are lost every year. This article presents an approach to recover Cu of fine fractions < 0.2 mm by froth flotation. Several collector regimes are screened and flotation parameters are varied. First results exhibit Cu recoveries of 50 % with Cu concentrations of about 5 %. Abstract : One of the main challenges in mechanical processing of municipal solid waste incineration bottom ashes for metal recovery is the treatment of fine fractions < 0.2 mm. A new approach for Cu recovery from these fractions using froth flotation is presented. The principal applicability of this technique is shown and first suitable collector components are identified.