Chemical profile identification of fugitive and confined particle emissions from an integrated iron and steelmaking plant

• Published in: Journal of hazardous materials Vol. 250-251; pp. 246 - 255
• Main Authors: Hleis, Dany, Fernández-Olmo, Ignacio, Ledoux, Frédéric, Kfoury, Adib, Courcot, Lucie, Desmonts, Thérèse, Courcot, Dominique
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15.04.2013; Elsevier
• Subjects: Air Pollutants - isolation & purification; Air Pollution; Anions; Applied sciences; Atmospheric pollution; Cations; Chemical engineering; Chemical profile; Dust; Earth Sciences; Environmental Monitoring - methods; Exact sciences and technology; Fugitive emission; Integrated iron/steel production; Iron - chemistry; Microscopy, Electron, Scanning; Oceanography; Other industrial wastes. Sewage sludge; Particle Size; Pollution; Sciences of the Universe; Sintering, pelletization, granulation; Solid-solid systems; Steel - chemistry; Thermogravimetry; Wastes; X-Ray Diffraction; Dust; Chemical profile; Integrated iron/steel production; Fugitive emission; Desulfurization; Chemical analysis; Identification; Steelmaking plant; Pollutant emission; Particle emission; Production; Lead; Fugacity; Scanning electron microscopy; Pollutant behavior; Thermogravimetry; Metallurgical industry; Differential thermal analysis; Steel; Housing; Particle size distribution; Industrial waste; Blast furnace; Sintering; Pollution source; Solid waste; Pollution source inventory; Slag; Air pollution
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2013.01.080

► Chemical profile of dust emissions from an integrated iron and steel plant. ► Fugitive dust emissions from the sintering area characterized by high Fe and Ca levels. ► Confined dust emissions from the sintering stack dominated by KCl content. ► High Fe and relatively low Ca content in blast furnace dust. The aim of this study is to obtain the characteristic inorganic chemical profile of important particle sources identified in the integrated iron and steel process: sintering, blast furnace, steelmaking and desulfurization slag processing. A complete chemical and physical characterization program was developed: particle size distribution, chemical analysis, XRD, SEM-EDX and TGA/DTA. The sample collected from the sinter stack showed high levels of K and Cl−, followed by Fe, NH4+, Ca, Na and Pb. The profile of the dust samples taken from the sinter cake discharge zone was quite different, showing higher amounts of Fe, Ca and Al, and lower amounts of K, Cl−, Na and Pb. Dust samples collected from the blast furnace (BF) and steelmaking cast house may be distinguished from each other based on the higher levels of Fe (hematite and magnetite) and lower levels of Ca, Zn and C (graphite) found in BF dust. High levels of Ca and Fe were found in samples taken from the desulfurization slag processing area. Such information can be useful for source apportionment studies at receptor sites that could be influenced by iron and steelmaking plant emissions.