Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 109, Issue 1, Pages 419-424Publisher
SPRINGER
DOI: 10.1007/s10973-011-1500-2
Keywords
Waste RE polishing powder; Thermogravimetry-differential thermal analysis; Fourier transform infrared spectroscopy; Decomposing reaction kinetics
Funding
- National Natural Science Foundation of the People's Republic of China [20877008]
- Program for New Century Excellent Talents in University [NCET-09-0218]
- Fundamental Research Funds for the Central Universities [06113001]
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The decomposition reaction process of waste rare earth (RE) polishing powder was monitored in real time by the thermogravimetry-differential thermal analysis (TG-DTA) and Fourier transform infrared spectroscopy (FTIR). The results showed that the reaction was divided into two stages, and the thermal weight losses got to stable when the temperature was more than 400 degrees C. The releasing gas mainly contained H2O and SiF4, and the reaction kinetics during decomposition process was studied by the methods of Freeman-Carroll and Kissinger.
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