... chemical raw materials, but because of high moisture lignite (20% -40%), low calorific value (2700 kcal or so), spontaneous ... 1), environmental protection and energy and reducing loss of lignite. Improve the calorific value of brown coal, desulfurization, reduce volatile.(2), ... 5), even temperature drying process to ensure the quality of lignite change.(6), continuous work, large capacity.Technical ...