Study on the structure and reactivity of COREX coal

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• 作者：Xin Cui (1)
  Xinxin Zhang (1)
  Mu Yang (2)
  Yanhui Feng (1)
  Hongyi Gao (2)
  Wenbo Luo (1)
  
• 关键词：COREX ; Coal analysis ; Organic oxygen functional groups ; FT ; IR ; TG鈥揇SC ; MS
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2013
• 出版时间：August 2013
• 年：2013
• 卷：113
• 期：2
• 页码：693-701
• 全文大小：740KB
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• 作者单位：Xin Cui (1)
  Xinxin Zhang (1)
  Mu Yang (2)
  Yanhui Feng (1)
  Hongyi Gao (2)
  Wenbo Luo (1)
  
  1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, 100083, People鈥檚 Republic of China
  2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, People鈥檚 Republic of China
  

文摘

COREX is the primary process in the current smelting reduction method. The process has strict coal quality standards. Combustion processes of coal used in the COREX operating system were analyzed using a synchronous thermogravimetric analyzer combined with a mass spectrometer. The microcosmic structure and macerals were observed by an electronic scanning microscope. The qualitative and quantitative determinations of oxygen functional groups, such as phenolic hydroxyl, carboxyl, carbonyl, and methoxy groups were detected by the Fourier Transform Infrared spectrometer (FT-IR) and through chemical analysis methods. In addition, the evolution of the chemical structure and transformation mechanism of organic oxygen functional groups during COREX coal combustion have been thoroughly investigated. This study proposes a new coal-requirement index system and coal blending method, which will increase the expansion of coal selection and decrease the overall usage of coal during COREX.