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The flash reduction of electric arc furnace dusts.
J Met 1992 Jan; 44(1):35-39
The flash processing of electric arc furnace (eaf) dusts is a promising method for recovering zinc and producing nontoxic slags for direct disposal. To reduce the zinc content of the dust particles and maintain the iron content in oxide form, a certain range of temperature and oxygen potential must be provided, as dictated by thermodynamic requirements. Experiments were conducted with eaf dusts at three levels of zinc concentration in an electrically heated flash reactor. The results showed that the co:co2 ratio in the process gas was the most important parameter. The effects of zinc content in dust and o2 in inlet gas on zinc recovery were secondary. Toxicity leach tests showed that the resulting slag, even at low zinc recovery, can be disposed safely as landfill.
OP; Journal Article
Issue of Publication
Journal of Metals
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division