Mineral migration of alkali metal during the combustion of coal and sewage sludge

The mineral migration of alkali metal during the combustion of coal and sewage sludge was studied by X-ray fluorescence (XRF), X-ray diffraction (XRD) phase analysis and Factsage 7.0 simulation. It showed that the migration process of potassium(K) during the combustion of coal-sludge blends mainly m...

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Veröffentlicht in:	IOP conference series. Earth and environmental science 2017-04, Vol.61 (1), p.12011
Hauptverfasser:	Ling, Peng, Liu, Liang, Ai, Jinjin, Yin, Yanshan, Tian, Hong, Xie, Fei
Format:	Artikel
Sprache:	eng
Schlagworte:	Alkali metals Anorthite Calcium aluminum silicates Coal Combustion Fluorescence Mica Muscovite Potassium Potassium aluminosilicate Sewage disposal Sewage sludge Sludge Sodium sulfate X ray fluorescence analysis X-ray diffraction X-ray fluorescence
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Zusammenfassung:	The mineral migration of alkali metal during the combustion of coal and sewage sludge was studied by X-ray fluorescence (XRF), X-ray diffraction (XRD) phase analysis and Factsage 7.0 simulation. It showed that the migration process of potassium(K) during the combustion of coal-sludge blends mainly manifested the process from muscovite (KAl3Si3O10(OH)2) to sanidine (KAlSi3O8), which included the transforming process of escaped atom K combined with Na2SO4 from glaserite or aphthitalite to sanidine (KAlSi3O8).The mutual transformation of ardite (Na2SO4) and albite (NaAlSi3O8) was mainly in the migration process of element Na with low-albite and high-albite appeared occurring in the process. The mutual transformation of anhydrite (CaSO4) and anorthite (CaAl2Si2O8) was mainly in the migration of element Ca.
ISSN:	1755-1307 1755-1315
DOI:	10.1088/1755-1315/61/1/012011