A PROCESS FOR PRODUCING CALCIUM AND STRONTIUM HYDROXOPHOSPHATES

A PROCESS FOR PRODUCING CALCIUM AND STRONTIUM HYDROXOPHOSPHATES

A process for producing calcium and strontium hydroxophosphates consists in that a solution is prepared using a mixture of ammonium hydrophosphate and ammonium nitrate at the ratio of 3:10, a stoichiometric quantity of powder of calcium or strontium carbonate is added to the solution, thereafter the...

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Bibliographische Detailangaben
Hauptverfasser: SALNYK OLHA OLEKSANDRIVNA, MARCHENKO VALERII IVANOVYCH, HETMAN YEVHEN IVANOVYCH, PASICHNYK LIUDMYLA VALENTYNIVNA, NAZARCHUK IRYNA VIKTORIVNA
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Zusammenfassung:A process for producing calcium and strontium hydroxophosphates consists in that a solution is prepared using a mixture of ammonium hydrophosphate and ammonium nitrate at the ratio of 3:10, a stoichiometric quantity of powder of calcium or strontium carbonate is added to the solution, thereafter the suspension being heated to a complete evaporation of the solvent, and the solid residue being thermally treated for 2-4 hours in the temperature range of 650-800 DEGREE c.