View source for 20250154059. (CHINA RAILWAY NO.4 ENGINEERING GROUP CO., LTD)

= LOW-ALKALI ACCELERATOR AND PREPARATION METHOD =

'''Abstract''':
a low-alkali accelerator and a preparation method therefor are provided. the preparation method comprises: s1, preparing a sodium metaaluminate solution; s2, adding water to the sodium metaaluminate solution, stirring same until uniform, then adding aluminum sulfate thereto, and reacting same at 50-80� c. for 0.5-1 h under stirring conditions; s3, within 10-30 min after complete reaction of the aluminum sulfate, adding, in a dropwise manner, a regulator to regulate the ph value to a neutral state; s4, mixing a strong-alkali weak-acid salt and a silicon dioxide gel until uniform, then adding same to a fluoride salt, and mixing same until uniform, to obtain a modified fluoride salt; and adding the modified fluoride salt to a neutral solution obtained in s3, and reacting same for 1-1.5 h, with the temperature maintained at 50-80� c.; and s5, adding an organic alcohol amine thereto, and stirring same for 0.5-1 h, to obtain the low-alkali accelerator.

'''Inventor(s)''': [[:Category:Dongdong FAN of Anhui  CN|Dongdong FAN]], [[:Category:Chunhong LIN of Anhui  CN|Chunhong LIN]], [[:Category:Zongjian ZHU of Anhui  CN|Zongjian ZHU]], [[:Category:Zhiyong WANG of Anhui  CN|Zhiyong WANG]], [[:Category:Hai HUANG of Anhui  CN|Hai HUANG]], [[:Category:Zhenghui XIA of Anhui  CN|Zhenghui XIA]], [[:Category:Shuangchao LI of Anhui  CN|Shuangchao LI]], [[:Category:Zhonghan WANG of Anhui  CN|Zhonghan WANG]], [[:Category:Yafei ZHANG of Anhui  CN|Yafei ZHANG]]

'''CPC Classification''': [[:Category:CPC_C04B14/043|C04B14/043]] (Silica-rich materials; Silicates)


[[Category:Patent Applications]]
[[Category:CHINA RAILWAY NO.4 ENGINEERING GROUP CO., LTD]]
[[Category:CPC_C04B14/043]]
[[Category:Dongdong FAN of Anhui  CN]]
[[Category:Chunhong LIN of Anhui  CN]]
[[Category:Zongjian ZHU of Anhui  CN]]
[[Category:Zhiyong WANG of Anhui  CN]]
[[Category:Hai HUANG of Anhui  CN]]
[[Category:Zhenghui XIA of Anhui  CN]]
[[Category:Shuangchao LI of Anhui  CN]]
[[Category:Zhonghan WANG of Anhui  CN]]
[[Category:Yafei ZHANG of Anhui  CN]]

[https://wikipatents.org/index.php?search=20250154059+rejection&title=Special%3ASearch&wprov=acrw1_-1 Search for rejections for patent application number 20250154059]


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