Method for preparing Nano magnesia from calcining light burning powder of magnesite
Title：
Method for preparing Nano magnesia from calcining light burning powder of magnesite
Application Number：
 200310103417
Application Date：
 2003/10/31
Announcement Date：
 2004/10/27
Pub. Date：
Publication Number：
 1539774
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C01F 5/02C01F 5/24C04B 2/10
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Zhu Guocai, Zhang Huanjun
Key Words：
 Nano magnesia, calcine, light burning powder, magnesite, preparation method
Abstract：
 A process for preparing magnesium oxide nanoparticles (15-50 nm) includes calcining magnesite to obtain light-burnt magnesium oxide powder, mixing it with water while introducing CO2 for carbonifying it, filtering the carbonifying liquid to obtain solution of magnesium hydrogen carbonate, thermodecomposing, filtering, drying and calcining. Its advantage is high purity (more than 98.7%).
Claim：
Priority：
PCT：
LegalStatus：
 2006-4-5Date of deemed withdrawal

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