In:
Chemical Papers, Springer Science and Business Media LLC, Vol. 70, No. 10 ( 2016-01-1)
Abstract:
Decomposition of flue gas desulfurization (FGD) gypsum in the presence of (10 mass %) magnetite and different mass fractions of anthracite, as a reducer, has been investigated under microwave irradiation in air atmosphere. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the decomposition residues. Both experiment results and theoretical analysis indicated that the optimum amount of anthracite added to the FGD gypsum (10 mass %) magnetite mixture was 8 mass %. Under optimum conditions, the maximum desulfurization degree after microwave treatment for 60 min at 1000°C was 93.86 %. Due to microwave heating and calcium ferrite formation, the decomposition temperature of FGD gypsum decreased to around 800°C in air atmosphere. Based on the XRD patterns and SEM images, the reaction of CaSO
Type of Medium:
Online Resource
ISSN:
1336-9075
,
0366-6352
DOI:
10.1515/chempap-2016-0071
Language:
Unknown
Publisher:
Springer Science and Business Media LLC
Publication Date:
2016
detail.hit.zdb_id:
2252770-9
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