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Iron-containing phases in metallurgical and coke dusts as well as in bog iron ore
- Source :
- Nukleonika, Vol 62, Iss 2, Pp 187-195 (2017)
- Publication Year :
- 2017
-
Abstract
- Several samples of dusts from steel and coke plants (collected mostly with electro filters) were subjected to the investigation of content of mineral phases in their particles. Additionally, sample of bog iron ore and metallurgical slurry was studied. Next, the magnetic susceptibility of all the samples was determined, and investigations of iron-containing phases were performed using transmission Mössbauer spectrometry. The values of mass-specific magnetic susceptibility χ varied in a wide range: from 59 to above 7000 × 10−8 m-3·kg−1. The low values are determined for bog iron ore, metallurgical slurry, and coke dusts. The extremely high χ was obtained for metallurgical dusts. The Mössbauer spectra and X-ray diffraction patterns point to the presence of the following phases containing iron: hematite and oxidized magnetite (in coke and metallurgical dusts as well as metallurgical slurry), traces of magnetite fine grains fraction (in metallurgical dusts), amorphous glassy silicates with paramagnetic Fe3+ and Fe2+ ions, traces of pyrrhotite (in coke dusts), α-Fe and nonstoichiometric wüstite (in metallurgical slurry), as well as ferrihydrite nanoparticles (in bog iron ore). For individual samples of metallurgical dusts, the relative contributions of Fe2+/3+ ions in octahedral B sites and Fe2+ ions in tetrahedral A sites in magnetite spinel structure differs considerably.
- Subjects :
- Nuclear and High Energy Physics
Bog iron
Science
bog ore
02 engineering and technology
010501 environmental sciences
01 natural sciences
Safety, Risk, Reliability and Quality
Waste Management and Disposal
Instrumentation
0105 earth and related environmental sciences
Mossbauer spectrometry
coke dusts
Metallurgy
phase analysis
Coke
021001 nanoscience & nanotechnology
Condensed Matter Physics
Magnetic susceptibility
Mössbauer spectrometry
Nuclear Energy and Engineering
metallurgical dusts
0210 nano-technology
Phase analysis
magnetic susceptibility
Subjects
Details
- Language :
- English
- ISSN :
- 00295922
- Volume :
- 62
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Nukleonika
- Accession number :
- edsair.doi.dedup.....56995500892c95ea05a6935aa89536c2