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Microwave promoted clinkering of sulfoaluminate cement
Sulfoaluminate clinkers were made by combination of electric heating and microwave processing. When raw sulfoaluminate materials were heated to 1000-1200 degree C conventionally, microwaves were inputted for 1-2 min. The f-CaO of the obtained clinkers was zero. Comparatively, when the samples with the same composition were conventionally heated at 1300 degree C for 1 h, the f-CaO of the obtained clinkers was as high as 1.03-4.78%, and when the samples with the same composition were heated only by microwave for 25 min, CaCO3 in the raw materials was not decomposed completely. It is shown that combination of electric heating and microwave processing greatly accelerate clinkering reaction. The X-ray diffraction (XRD) of the clinkers indicates that their mineral composition and XRD patterns are the same as those of the clinkers prepared by conventional firing methods. It has also been proven that Fe2O3 contributed to sulfoaluminate cement clinkering.
Microwave promoted clinkering of sulfoaluminate cement
Sulfoaluminate clinkers were made by combination of electric heating and microwave processing. When raw sulfoaluminate materials were heated to 1000-1200 degree C conventionally, microwaves were inputted for 1-2 min. The f-CaO of the obtained clinkers was zero. Comparatively, when the samples with the same composition were conventionally heated at 1300 degree C for 1 h, the f-CaO of the obtained clinkers was as high as 1.03-4.78%, and when the samples with the same composition were heated only by microwave for 25 min, CaCO3 in the raw materials was not decomposed completely. It is shown that combination of electric heating and microwave processing greatly accelerate clinkering reaction. The X-ray diffraction (XRD) of the clinkers indicates that their mineral composition and XRD patterns are the same as those of the clinkers prepared by conventional firing methods. It has also been proven that Fe2O3 contributed to sulfoaluminate cement clinkering.
Microwave promoted clinkering of sulfoaluminate cement
Long, Shizong (author) / Dong, Jianmiao (author) / Yan, Caixia (author)
Cement and Concrete Research ; 32 ; 1653-1656
2002
4 Seiten, 4 Quellen
Article (Journal)
English
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