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2011-Sustainable Industrial Processing Summit
|Flogen Star OUTREACH
|2291-1227 (Metals and Materials Processing in a Clean Environment Series)
Due to the depletion of high grade iron ore and environmental issues, it is required to understand the development and behavior of mineral phases such as the calcium ferrites formed in sintering process for producing high quality sinter ore with low energy consumption. In the present study, the effects of basicity (CaO/SiO2 ratio) and Al2O3 content on the reduction and melting behaviors of main phases (calcium ferrites) in sinter ore were investigated by employing thermogravimetric method (TGA) and confocal scanning laser microscope (CSLM). Constitutional and phase analyses were carried out by using EPMA and XRD measurements. It was found that the reduction and melting behaviors of calcium ferrite phases were significantly affected by the content of gangue materials in sinter as well as the mineralogical characteristics.