TY - CONF A1 - Holm, Olaf A1 - Simon, Franz-Georg T1 - Recovery of copper from small grain sizes of municipal solid waste incineration bottom ash by means of density separation T2 - SUM 2014 - 2nd Symposium on Urban Mining (Proceedings) N2 - Small grain sizes of municipal solid waste incineration (MSWI) bottom ash (BA) contain elemental and chemically bonded metals in appreciable amounts, especially copper. As different copper species have in general a higher density compared to the prevalent minerals, processes for density separation seemed to be favorable for the recovery of copper. Investigations with a centrifugal classifier were therefore carried out with BA from MWSI which have been used for a few years as the covering material for a landfill. The results show an appreciable enrichment of the precious copper. The concentrates contained up to 60 mg/kg copper in the dry weight (DW) (in general about 30 – 40 mg/kg DW) with enrichment factors of around 20 and a copper recovery of up to 50 % (in general around 20 %). A test series in order to evaluate the potential benefit for sequential processing illustrate the low efficiency for a further processing of the tailings. PB - CISA Publisher CY - Padova, Italy T2 - SUM 2014 - 2nd Symposium on Urban Mining CY - Bergamo, Italy DA - 19.052014 KW - Municipal solid waste incineration (MSWI) KW - Density separation KW - Bottom ash (BA) KW - Copper PY - 2014 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/37308 AN - OPUS4-37308 SN - 9788862650311 SP - 1 EP - 7 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany