METHOD FOR REFORMING LOW RANK COAL, AND APPARATUS THEREOF

摘要

The present invention provides a method for reforming low rank coal and an apparatus thereof for improving the quality of low rank coal containing a large amount of ash and moisture and for inhibiting spontaneous combustion. The method for reforming low rank coal according to the present invention comprises the pulverization and separation step of pulverizing low rank coal in water by friction and separating fixed carbon, the dehydration step of dehydrating the pulverized fixed carbon, and the volatile matters removal step of removing the volatile matters fixed on the fixed carbon by mutual rubbing of the fixed carbon. In addition, the apparatus for reforming low rank coal according to the present invention comprises: an attrition mill which pulverizes low rank coal through the friction with a plurality of friction balls; and a mill for removing the volatile matters fixed on the fixed carbon by milling the fixed carbon discharged from the attrition mill through the friction with a steel sphere or a steel rod.