Mechanism and kinetics of inorganic sulphates decomposition |
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| Authors: | Y Pelovski V Petkova |
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| Institution: | 1. Higher Institute of Chemical Technology, 8 Kl. Ohridski Blvd., 1756, Sofia
2. Bulgarian Academy of Sciences Central Laboratory of Physical-Chemistry Mechanics Acad., G. Bonchev Str., Bl. 1, 1113, Sofia, Bulgaria
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| Abstract: | Thermal decomposition of different inorganic sulphates are presented. A number of techniques, but mainly TG and DTA, are used to prove the mechanism and kinetics of CaSO4, BaSO4, FeSO4·xH2O, Al2(SO4)3·xH2O under various gas atmospheres. It is shown how the partial pressure of gas components and heating rate may effect the mechanism and kinetic parameters. There are also examples on the effects of some additives and initial treatment on the thermal processes. On the base of the results obtained some recommendations are given concerning the precautions to be taken into account in the thermal decomposition studies and the sulphur recovering. |
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