Determination of quartz content for Indian coals using an FTIR technique

作者：Bandopadhyay A K^*

来源：International Journal of Coal Geology, 2010, 81(1): 73-78.

DOI：10.1016/j.coal.2009.10.018

• Quartz
• Thermal coal
• FTIR
• Ash analysis

A suite of thirteen Indian thermal coals have been subjected to FTIR examination to determine their quartz content. The coal samples were ashed at 815 +/- 10 degrees C using standard procedures and the high temperature ash (HTA) of each coal was used to make a tablet with KBr under pressure. Each tablet was then subjected to FTIR scanning to obtain a spectrum at a resolution of 2 cm(-1). The 800 cm(-1) quartz doublet observed in each spectrum was used to obtain quantitative information on the percentage of quartz present. The data were compared with interpretations from ash analysis. The result showed a good correlation between the two sets of data (R(2) = 0.84), suggesting the potential of the method for routine testing of quartz content of coal in laboratory, especially as it takes less time than other methods.

• 出版日期2010-1-7