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Effect of moisture on energy size reduction of lignite ,jun 15, 2020 As shown in fig. the energy expended in pulverizing coal with moisture below the air-dried level was clearly higher than that of coal with moisture above the air-dried level. drying the lignite from the moisture content of 37.90% to 16.61% resulted in a slight increase of input energy of about 0.04 kwh.t per
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