Process for preparing nm-class calcium carbonate
Title：
Process for preparing nm-class calcium carbonate
Application Number：
 01103944
Application Date：
 2001/02/16
Announcement Date：
 2001/08/22
Pub. Date：
Publication Number：
 1309089
Announcement Number：
 1131172
Grant Date：
Granted Pub. Date：
 2003-12-17
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C01F 11/18
Applicant(s)：
 Qinghua Univ.
Inventor(s)：
 Xiang Lan, Xiang Ying, Wang Zhiguo
Key Words：
 preparing process, nm-class, calcium carbonate
Abstract：
 A process for preparing nm-class calcium carbonate includes adding raw material to water for preparing suspension, adding complexing agent and water-soluble inorganic salt for controlling the form and structure of calcium carbonate, adding the mixture of CO2 and air for carbonification reaction while adding surfactant, filtering and drying. Its advantages are simple process, low cost and high quality. Said product can be used as filler or strengthening agent.
Claim：
Priority：
PCT：
LegalStatus：

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