But coal blend ratio should be less than 5% for higher content of brown coal ash.
但由于褐煤的灰分较高，所以配煤比例不宜超过5%。
The moisture, ash, total humic acid and free humic acid of the brown coal were analyzed.
对褐煤水分、灰分、总腐植酸、游离腐植酸、进行了分析和评价。
The appropriate conditions that the enriched Ge-bearing lignite in Lincang brown into coal ash with oxidizing roasting method was studied.
研究了采用氧化焙烧法将富集临沧含锗褐煤转化成褐煤灰的适宜条件。
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