Method for preparing light aggregate through burning fly ash by using garbage
Title：
Method for preparing light aggregate through burning fly ash by using garbage
Application Number：
 200510011178
Application Date：
 2005/01/14
Announcement Date：
 2005/08/17
Pub. Date：
 2007/02/07
Publication Number：
 1654403
Announcement Number：
 1298658
Grant Date：
 2007-2-7
Granted Pub. Date：
 2007-2-7
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C04B 18/10, B09B 3/00
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Nie Yongfeng, Li Rundong, Liu Feng
Key Words：
 garbage, burning fly ash, light aggregate, prepare
Abstract：
 The present invention is method of utilizing garbage incinerating flyash in producing light aggregate, and belongs to the technology of treating and utilizing harmful heavy metal waste. The method includes extraction and separation to eliminate great amount of soluble chlorates; controlling the extractant amount and extracting liquid pH value to reduce the migration of heavy metal matter to extracted liquid phase; and obtaining light aggregate through adding adhesive, pelletizing and sintering. The present invention provides one extracting desalting combined sintering process to ensure the strength of sintered matter. In addition, the present invention can decompose dioxin and similar pollutant in the material and cure heavy metal in the sintered product.
Claim：
Priority：
PCT：
LegalStatus：

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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
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