Dust from a secondary copper smelter: application of air classification for improved dust recycling

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Abstract

The off-gas from a secondary copper smelting furnace is de-dusted by a fabric filter. When the separated dust is partly recycled to the furnace not only Cu but also unwanted volatile elements like Pb and Zn are recycled. The classification experiments showed a distinct size dependence of the concentrations of these elements in the dust. Thus, air classification could be applied to optimize dust recycling by separation of the dust into two fractions: a coarse fraction for recovery of Cu and a Cu-depleted fine fraction which is discharged and treated externally to recover Zn and Pb.
Original languageEnglish
Title of host publicationProceedings of the 50th International October Conference
Pages245-248
Publication statusPublished - 2018
Event50th International October Conference on Mining and Metallurgy - Bor, Serbia
Duration: 30 Sep 20183 Oct 2018

Conference

Conference50th International October Conference on Mining and Metallurgy
Country/TerritorySerbia
CityBor
Period30.09.201803.10.2018

Keywords

  • Secondary copper smelter
  • filter dust
  • air classification
  • dust composition

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