Abstract
ABSTRACT This study investigates how the Mechanical Thermal Expression (MTE) process affects the physico-chemical properties of low rank lignites sourced from Australia, Greece, and Germany. The MTE process was effective in reducing the moisture content of all three coals and resulted in significant Na reductions in both the Australian and German coals. However, the organic composition of the coals investigated remained relatively unaffected. Upon oven drying, all wet MTE products underwent significant shrinkage, the degree of which was dependent upon the temperature and pressure used during the MTE process. Upon rehydration, the oven-dried MTE products underwent significant swelling, which is most likely related to the chemical composition of the coals.
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