Process for purifying calcium fluoride from floated fluorite mine

The invention provides a process for purifying calcium fluoride from floated fluorite ore. The floated fluorite ore is taken as a raw material, a multi-time purification process is adopted, a corresponding treatment process for purification is formulated according to the characteristics of different...

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Bibliographic Details
Main Authors FU CHONGFEI, KOU JIANGUO, ZHOU XIAODONG
Format Patent
LanguageChinese
English
Published 23.11.2021
Subjects
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
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Summary:The invention provides a process for purifying calcium fluoride from floated fluorite ore. The floated fluorite ore is taken as a raw material, a multi-time purification process is adopted, a corresponding treatment process for purification is formulated according to the characteristics of different impurities, a melting method for gasification decomposition and conversion, acid dissolution, alkali addition for silicon removal and carbonate addition for calcium and magnesium removal are implemented sequentially, acid is added to remove carbonate precipitate, and finally nuclear-grade high-quality calcium fluoride is obtained. Particularly, impurities which are insoluble in water are effectively converted into substances which are soluble in water through alkalifying and melting, and high-temperature decomposition of impurities such as organic matters and sulfate is realized, so that the content of impurity elements of the finally obtained product meets the requirement of nuclear-grade calcium fluoride, and th
Bibliography:Application Number: CN202110826489