57Fe Mössbauer spectroscopic studies of fly ash from coal-fired power plants and bottom ash from lignite-natural gas combustion
✍ Scribed by M.D. Patil; H.C. Eaton; M.E. Tittlebaum
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 589 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
✦ Synopsis
A series of four fly ashes, representing a variety of geological origins, and a bottom ash sample derived from the combustion of lignitenatural gas mixtures have been studied by !j7Fe Mossbauer spectroscopy. The ashes are separated into magnetic and non-magnetic fractions to facilitate a study of the chemical state of the iron contained in the ash. The bottom ash contains no magnetic fraction whereas the magnetic fractions of the fly ashes range from 1 .I to 7.3%. The magnetic fractions contained iron in the form of magnetite, FesO,. Iron in the non-magnetic fly ash fractions occur as Fe+' and Fe+* mullites, and Fe+3 and Fe+* silicates. Only Fei3 silicates are found in the bottom ash.