Method for preparing haydite by sintering urban domestic sewage sludge
Title：
Method for preparing haydite by sintering urban domestic sewage sludge
Application Number：
 200710121297
Application Date：
 2007/09/03
Announcement Date：
 2008/03/26
Pub. Date：
Publication Number：
 101148348
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C04B 33/132
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Jin Yiying, Wang Zhiyu, Nie Yongfeng, Du Xin
Key Words：
 haydite, sintering, urban domestic sewage sludge
Abstract：
 The present invention relates to solid waste treating technology, and discloses sewage sludge treating and utilizing process. Sewage sludge in over 70 %, fly ash and clay as the material are treated through drying, crushing, mixing, press forming, preheating and roasting to obtain haydite product. The roasted haydite has one compact glaze layer in the surface and great amount of inside pores, and possesses compressive strength, water absorption, environment safety, etc reaching relevant standard. Using sewage sludge in making building material is significant.
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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