Phase Transformations in Mixtures of Calcite and Dolomite with Condensed Phosphates of Calcium during Heating |
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Authors: | Pyldme M Pyldme J Utsal K |
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Institution: | (1) Tallinn Technical University, Estonia;(2) Tartu University, Estonia |
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Abstract: | The thermal interactions of dolomite and calcite with calcium polyphosphates up to 1000°C were studied by thermal (dynamic
heating and isobaric conditions) and X-ray diffraction methods. It was found that in mixtures with Ca-polyphosphates less
than half of the carbonates reacted before decomposition to oxides with the phosphates. The rates of the reactions of phosphates
with MgO were much lower than those with CaO. The scheme of the main crystalline phase transformations was constructed.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | calcite calcium polyphosphates dolomite phase transformation TG X-ray |
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