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- W1997544489 abstract "The gaseous fluorides formation mechanism in the roasting process of the fluorite-bearing iron concentrate was studied by thermodynamic calculation, differential thermal analysis (DTA) and chemical analysis. The results show that fluorine in the fluorite-bearing iron concentrate begins to escape since 400~500°C, and the emission rate of fluorine significantly increases when the temperature is above 1100°C; in the roasting process of fluorite-bearing iron concentrate, SiO 2 , K 2 O, Na 2 O, MgO, Al 2 O 3 in the gangue and water vapor in roasting atmospher react with CaF 2 in fluorite to generate such gaseous fluorides as SiF 4 , KF, NaF, MgF 2 , AlF 3 and HF; with the increase of roasting temperature, the emission rate of fluorine increases obviously; and the water vapor in roasting atmosphere can improve escaping of fluorine.The results provide a theoretical basis for the improvement of roasting technology to reduce fluorine emission in the roasting or sintering process of Baiyanobo iron concentrate." @default.
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- W1997544489 date "2013-05-01" @default.
- W1997544489 modified "2023-09-25" @default.
- W1997544489 title "Gaseous Fluorides Formation Mechanism in the Roasting Process of the Fluorite-Bearing Iron Concentrate" @default.
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- W1997544489 doi "https://doi.org/10.4028/www.scientific.net/amr.690-693.3498" @default.
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