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Citation: MA Yan, HUANG Zhen-yu, TANG Hui-ru, WANG Zhi-hua, ZHOU Jun-hu, CEN Ke-fa. Mineral conversion of Zhundong coal during ashing process and the effect of mineral additives on its ash fusion characteristics[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(1): 20-25. shu

Mineral conversion of Zhundong coal during ashing process and the effect of mineral additives on its ash fusion characteristics

  • 1.

    State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering of Zhejiang University, Hangzhou 310027, China

  • Corresponding author: HUANG Zhen-yu, 
  • Received Date: 20 June 2013
    Available Online: 2 September 2013

    Fund Project: 国家重点基础研究发展规划(973计划,2012CB214906)。 (973计划,2012CB214906)

  • Mineral conversion in heating process was studied by low temperature ashing, high temperature ashing and XRD. The results show that the original minerals in Zhundong coal mainly include calcite and kaolinite. With the increase of combustion temperature, they transform into fusible minerals such as fayalite and calcium. In addition, refractory minerals, ettringite and grossular, generated in ash samples, result in higher ash melting points with the decrease in SiO2/Al2O3 ratio which was adjusted by adding kaolinite and alumina into the raw coal.
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