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Volume 39 Issue 10
Jan.  2022
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Article Navigation >  ENVIRONMENTAL ENGINEERING  > 2021  >  39(10): 124-128
SUN Jin, TAN Xin, ZHANG Shu-guang, JI Tao. COMPOSITION AND MELTING CHARACTERISTICS OF FLY ASH FROM 14 MSWI PLANTS IN CHINA[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(10): 124-128. doi: 10.13205/j.hjgc.202110017
Citation: SUN Jin, TAN Xin, ZHANG Shu-guang, JI Tao. COMPOSITION AND MELTING CHARACTERISTICS OF FLY ASH FROM 14 MSWI PLANTS IN CHINA[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(10): 124-128. doi: 10.13205/j.hjgc.202110017
shu

COMPOSITION AND MELTING CHARACTERISTICS OF FLY ASH FROM 14 MSWI PLANTS IN CHINA

doi: 10.13205/j.hjgc.202110017

  • 1. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;

  • 2. Tianjin Yisheng Environmental Technology Co., Ltd, Tianjin 300392, China

  • Received Date: 2021-02-02
    Available Online: 2022-01-26
    Abstract
  • In this paper, the physicochemical properties of fly ash from 14 municipal solid waste incinerators located in Northeast, North, East and South China were analysed, including their composition, loss on ignition and melting characteristics. The results showed that the content of CaO in fly ash of grate furnace was the highest in China, and the mass fraction of CaO was 40%~60%. The content of Cl was in the range of 20%~30%. At the same time, considerable contents of heavy metals which are easy to gasify were enriched in the fly ash. The loss on ignition of fly ash increased significantly with the increase of incineration temperature. When the temperature was 1200℃ above, it tended to be stable, and the highest loss on ignition was 40% above. The flow temperature of fly ash was most significantly affected by the content of SiO2, distributed in the range of 1100~1500℃.
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