Invention Grant
- Patent Title: Secondary synthetic method for calcium sulphoaluminate mineral in Portland cement clinker
- Patent Title (中): 波特兰水泥熟料中硫铝酸钙矿物的二次合成方法
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Application No.: US13509794Application Date: 2010-07-15
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Publication No.: US08404039B2Publication Date: 2013-03-26
- Inventor: Xiaodong Shen , Suhua Ma , Xuerun Li , Lin Chen , Weiqiang Zhou , Song Deng
- Applicant: Xiaodong Shen , Suhua Ma , Xuerun Li , Lin Chen , Weiqiang Zhou , Song Deng
- Applicant Address: CN Nanjing
- Assignee: Nanjing University of Technology
- Current Assignee: Nanjing University of Technology
- Current Assignee Address: CN Nanjing
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Priority: CN200910212645 20091113
- International Application: PCT/CN2010/075188 WO 20100715
- International Announcement: WO2011/057506 WO 20110519
- Main IPC: C04B7/04
- IPC: C04B7/04 ; C04B7/47 ; C04B7/48 ; C04B7/52
Abstract:
A method for secondarily synthesizing calcium sulphoaluminate mineral in Portland cement clinker is provided. The method includes adding gypsum into raw Portland cement, calcination, then heating twice to re-form calcium sulphoaluminate mineral that has decomposed at high temperature in the clinker. This method can increase the content of calcium sulphoaluminate mineral in the clinker. As a result, the advantages of the calcium sulphoaluminate mineral in the clinker may be obtained, such as improvement of the early stage performance and long-term performance of the cement clinker and increase in the quantity of mixture in the cement.
Public/Granted literature
- US20120285350A1 SECONDARY SYNTHETIC METHOD FOR CALCIUM SULPHOALUMINATE MINERAL IN PORTLAND CEMENT CLINKER Public/Granted day:2012-11-15
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