34. Characterization of Aluminate and Silicate in Coal Ash

    • ISHOM Faizul
    • 九州大学 Institute of Advanced Material Study, Kyushu University
    • WATANABE Izumi
    • 九州大学 Institute of Advanced Material Study, Kyushu University
    • MOCHIDA Isao
    • 九州大学 Institute of Advanced Material Study, Kyushu University

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Abstract

Scanning electron microscope combined with energy dispersive X-ray analysis (SEM-EDX) was used to identify inorganic species in coal ash and to measure the particle size distribution and element composition. Ashes in raw and acid-treated Nantong coal prepared by low temperature ashing (LTA) and high temperature ashing (HTA) were used as sample. Silicate-rich particles showed agglomerate shape, but aluminate-rich particles showed layer-like shape. Silicate appears to cover the aluminate particle surface. Calcium was found in ash of the raw coal, not in ash from the acid treated coal. It is noted that a small amount of aluminate was removed by the mild acid treatment. It seems that fine particle aluminates disappeared from HTA ash by the acid treatment, while the morphology of LTA ash stayed unchanged regardless of the acid treatment.

Journal

石炭科学会議発表論文集   [List of Volumes]

石炭科学会議発表論文集 (37), 141-144, 2000-09-28  [Table of Contents]

The Japan Institute of Energy

Codes

  • NII Article ID (NAID) :
    110006857385
  • NII NACSIS-CAT ID (NCID) :
    AA12293003
  • Text Lang :
    ENG
  • Databases :
    NII-ELS