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Ash fusion properties
The fusion properties of laboratory prepared coal ash which are demonstrated by the heating of the ash in a mildly reducing or oxidizing atmosphere. The temperature range generally used is 900oC up to 1600oC, and the temperatures which can be recorded are initial deformation temperature, softening temperature, hemisphere temperature and fluid (flow) temperature. Almost invariably, temperatures recorded under reducing atmosphere are lower or equal to those recorded under oxidizing atmosphere. Of the characteristic temperatures, the initial deformation and flow are generally the most difficult to reproduce.
