Mechanism of boron oxide as a phase regulator for modification of manganese slag

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• 作者：Ping Chen (1) (2) (3)
  Zhibo Li (1)
  Rongjin Liu (1) (2) (3)
  Weiheng Xiang (1)
  Aixiang Qi (4)
  
• 关键词：boron oxide ; manganese slag ; amorphous content ; hydraulic activity
• 刊名：Journal of Wuhan University of Technology--Materials Science Edition
• 出版年：2014
• 出版时间：February 2014
• 年：2014
• 卷：29
• 期：1
• 页码：89-92
• 全文大小：176 KB
• 参考文献：1. Liu Rongjin, Chen Ping. Research on the Composition, Structure and Performance of the Water Quenching Manganese Slag[J]. / Ferro-Alloys, 2009, 40(3): 42-6 (in Chinese) CrossRef
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  11. Xu Bin, Pu Xincheng. Study on the Micro-Phase-Separation Structure of Slag Glasses[J]. / Journal of Chongqing Jianzhu University, 1997, 19(4): 53-0(in Chinese)
  
• 作者单位：Ping Chen (1) (2) (3)
  Zhibo Li (1)
  Rongjin Liu (1) (2) (3)
  Weiheng Xiang (1)
  Aixiang Qi (4)
  
  1. College of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, China
  2. Key Lab of New Processing Technology for Nonferrous Metals & Materials, Minstry of Education, Guilin, 541004, China
  3. Guang Xi Key Laboratory of New Energy and Building Energy Saving, Guilin, 541004, China
  4. University of Science and Technology Beijing, Beijing, 100083, China
  
• ISSN：1993-0437

文摘

The current research focused on adjusting the low hydration activity of the metallurgical slag by phase reconstruction technique. Boron oxide was used as a phase regulator to improve the amorphous phase composition of the manganese slag, consequently enhancing its hydraulic activity. The effects of boron oxide dosage and calcination temperature on the manganese slag amorphous phase content were investigated. XRD and DTG were performed to analyze the hydration mechanism of the manganese slag powder and cement. Results show that, when boron oxide dosage is 15%, calcination temperature is 1 300 °C, and holding time for 1 hour, the amorphous content of the modified manganese slag reaches 95% and its 28-day activity index reaches 81.7%. The manganese slag powder can then be used as cement or concrete admixtures for the building materials industry.