Crushing of MSWI bottom ash towards material purification

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Abstract

Municipal Solid Waste Incineration (MSWI) reduces mass and volume of the waste by about 70% and 90%, respectively. Next to boiler and fly ash, solid MSWI Bottom Ash (hereinafter referred to as bottom ash; BA) makes up for 80% of the remaining material containing unburned matter, glass, ceramics, metals, and minerals. Despite its similar composition to concrete constituents, which suggests their applicability in this field, at present BA is landfilled or used in low-grade applications (e.g. road base material). In order to make a higher end application possible, correlations between physical properties, size fractions and mineralogical composition have been studied.
This study looks into the crushing of the materials within BA and how certain fractions are enriched with specific types of material, therefore depleting and purifying other fractions making them better suitable for implementation in concrete.
Original languageEnglish
Title of host publicationAdvances in Cement and Concrete Technology in Africa
Subtitle of host publicationProceedings 2nd International Conference, Dar es Salaam, Tanzania, January 27 -29 2016
EditorsW. Schmidt, N.S. Msinjili
Place of PublicationBerlin
PublisherBAM Federal Institute for Materials Research and Testing
Pages271-277
Number of pages7
ISBN (Electronic)978-3-9817502-3-2
Publication statusPublished - 27 Jan 2016
Event2nd International Conference on Advances in Cement and Concrete Technology in Africa (ACCTA 2016), January 27-29, 2016, Dar es Salaam, Tanzania - White Sands Hotel, Dar es Salaam, Tanzania, United Republic of
Duration: 27 Jan 201629 Jan 2016
http://www.accta2016.bam.de/en/home/index.htm

Conference

Conference2nd International Conference on Advances in Cement and Concrete Technology in Africa (ACCTA 2016), January 27-29, 2016, Dar es Salaam, Tanzania
Abbreviated titleACCTA 2016
CountryTanzania, United Republic of
CityDar es Salaam
Period27/01/1629/01/16
Internet address

Keywords

  • MSWI bottom ash
  • Crushing
  • Size fractions
  • Density

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