Characterization of iron-bearing minerals in Giril lignite from Rajasthan and study of their decomposition during combustion using 57Fe Mössbauer spectroscopy

摘要: Abstract 57Fe Mossbauer spectroscopy has been used to characterize the iron-bearing minerals in lignites from a recently discovered deposit Giril, Rajasthan (026°03′N longitude and 071°15′N latitude). An interesting feature of these is large amount jarosite observed which likely have volcanic origin. Pyrite other mineral observed. The decomposition on combustion studied by experiments samples heated at different temperatures. route significantly those normally found coal samples. Early rupture polymer matrix repulsion hydrogen seems major role deciding route.