Tecnologia em Metalurgia, Materiais e Mineração (Mar 2013)

ADDITION OF ELECTRIC ARC FURNACE DUST IN HOT METAL

  • Felipe Fardin Grillo,
  • Vicente de Paula Marques Sobrinho,
  • José Roberto de Oliveira,
  • Raphael de Alcantara Sampaio,
  • Jorge Alberto Soares Tenório ,
  • Denise Crocce Romano Espinosa

DOI
https://doi.org/10.4322/tmm.2013.001
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 7

Abstract

Read online

This research aims to study the process of incorporation of the mass in final hot metal and volatilization mass contained in the electric arc furnace dust (EAFD), by addition in hot metal at a temperature of 1,400°C; 1,450°C and 1,500°C altering experimental conditions such as the percentage of EAFD to be added and the percentage of silicon in hot metal. Previously, the EAFD was characterized using techniques of chemical analysis and size analysis. After characterization, the EAFD to be added to the hot metal was agglomerated in the form of briquettes. The achievement of fusion experiments in laboratory scale was placed in a vertical tubular furnace with temperature control. A flow of inert gas (argon) was maintained inside the furnace during the experiments. The result of the sample EAFD volatilized shows that there is an increase in the zinc concentration when compared with the concentration of zinc present in EAFD “as received”.

Keywords