Mössbauer spectroscopy is applied for the study of melted agglomerant of low temperature ash for Datong coal. The results show that hematite and glasses containing Fe
3+
are the major iron containing phases in the melted agglomerant obtained in oxidizing atmospheres. Hematite is transformed to glass phase with increasing temperature. Magnetite
pyrrhotite
Fe
2+
-containing glass
olivine and spinel are the main iron-containing phases in the melted agglomerant obtained in reducing atmospheres. Olivine is transformed to glass phase with increasing temperature. Compared with the result of low temperature
ash
of coke
it is indicated that coal gasification is accompanied by coking process.
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references
李哲 等 , 焦炭低温灰的熔聚物中含铁物相的研究 , 科学通报 ( 待发表 )。
李哲 等 , 科学通报 ,( 1985 ), 15 : 1406 。
J. G. Stevens et al . , Mössbauer handbook: Mineral data , Mössbauer Effect Data Center , 1983 , p. 1 .