Preparation method of nuclear pure grade thorium

The invention provides a preparation method of nuclear pure grade thorium. The method includes the steps of dissolution, filtration, precipitation, ageing, burning and the like. The method provided by the invention can effectively lower the content of impurity elements in analytically pure thorium n...

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Bibliographic Details
Main Authors WANG CHUNYE, LI XIAOHONG, ZHOU ZHIQUAN, SUN HAOBO, ZHAO FENGQI, SHU ZUJUN, CAO SHUQIN, GUO GUOLONG, WANG HAISHENG, SUN XIAOGUANG
Format Patent
LanguageChinese
English
Published 04.05.2016
Subjects
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:The invention provides a preparation method of nuclear pure grade thorium. The method includes the steps of dissolution, filtration, precipitation, ageing, burning and the like. The method provided by the invention can effectively lower the content of impurity elements in analytically pure thorium nitrate to less than 10<-6>ug/g content level to reach the nuclear pure grade. And the whole process is easy to operate, the cycle is short, the cost is low, the product purity is high and can reach more than 99.999%, the yield is greater than 97%, and the content of thorium in the filtrate is less than 0.5g/L. The process can effectively reduce the impurity elements of the product, and the prepared thorium product can reach the relevant standards of the state or industry.
Bibliography:Application Number: CN20151882741