The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 2013
Filed:
Jul. 15, 2010
Xiaodong Shen, Jiangsu, CN;
Suhua MA, Jiangsu, CN;
Xuerun LI, Jiangsu, CN;
Lin Chen, Jiangsu, CN;
Weiqiang Zhou, Jiangsu, CN;
Song Deng, Jiangsu, CN;
Xiaodong Shen, Jiangsu, CN;
Suhua Ma, Jiangsu, CN;
Xuerun Li, Jiangsu, CN;
Lin Chen, Jiangsu, CN;
Weiqiang Zhou, Jiangsu, CN;
Song Deng, Jiangsu, CN;
Nanjing University of Technology, Nanjing, CN;
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.