Microstructural Analysis of and Thermal Analysis Geopolymer With Flue Dust

  • Nobre T
  • Vargas A
  • Dal Molin D
 et al. 
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Abstract

Flue dust (FD), generated from electric arc furnace, is one of the biggest problems for the content of heavy metals such as Zn, Fe, Cr, Cd, Pb and others, emitted to the atmosphere during the manufacture of steel. The flue dust is classified as hazardous waste in Brazil, the NBR 10.004, as in other steel producing countries such as USA, Japan and Germany, and its composition depends on the type of steel produced. In developed countries FD is the subject of a process which aims at the recovering of those metals – especially zinc – for their reutilisation in other industries. Because those processes are less used in Brazil, studies about the reutilisation of FD in other industries – such as civil construction – are necessary.

Author-supplied keywords

  • alkali-activation
  • flue dust
  • fly ash
  • geopolymer

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Authors

  • T R S Nobre

  • a S Vargas

  • D. C. C. Dal Molin

  • A. B. Masuero

  • a C F Vilela

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