Kinetics of dehydration of FeSO4•7H2O under different atmospheres

被引：0
|
作者：
Kanari, N [1 ]
Gaballah, I [1 ]
Mathieu, C [1 ]
Neveux, N [1 ]
Evrard, O [1 ]
机构：
[1] LEM, Mineral Proc & Environm Engn Team, F-54501 Vandoeuvre Nancy, France
来源：
EPD CONGRESS 1999 | 1999年
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D O I：
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中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Hydrated ferrous sulfate is a by-product of titanium and surface treatment industries. The majority of this product has to be disposed as a waste. Disposal is a significant extra cost for these industries. Recently, the ferrous sulfate partially dehydrated was successfully used for the synthesis of a new superoxidant material containing iron in hexavalent state (Fe-VI). The kinetics of dehydration of FeSO4. 7H(2)O under neutral, oxidizing and chlorinating atmospheres were studied by thermogravimetric and differential scanning calorimetry analysis. The obtained products were analyzed by X-ray diffraction and Mossbauer spectroscopy. The effects of temperature, gas velocity, type of sulfate, etc, on the dehydration rate were defined.
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页码：17 / 28
页数：4
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