Method of processing waste materials containing calcium fluoride

The method allows processing waste materials containing calcium fluoride. Unique characteristics: The sludge left after the production of calcium phosphates, containing at least 1 percent by weight of Na and 3 percent by weight of P2O5 in terms of dry matter, is calcined at the temperature of 700-90...

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Bibliographic Details
Main Authors KOWALSKI ZYGMUNT, PASZEK ANDRZEJ, DRZYMALA ZYGMUNT, PIWOWARSKI MICHAL
Format Patent
LanguageEnglish
Polish
Published 28.04.2000
Edition7
Subjects
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
COMPOUNDS THEREOF
DISPOSAL OF SOLID WASTE
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
RECLAMATION OF CONTAMINED SOIL SOIL
TRANSPORTING
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Summary:The method allows processing waste materials containing calcium fluoride. Unique characteristics: The sludge left after the production of calcium phosphates, containing at least 1 percent by weight of Na and 3 percent by weight of P2O5 in terms of dry matter, is calcined at the temperature of 700-900 degrees C for 1-2 hours. The product with the granulation above 15 mm is returned to the calcination process.
Bibliography:Application Number: PL19950309933