Current situation and prospects of power coal dry separation technology in China
XIA Yunkai
LI Gongmin
Abstract：In view of the problems of wet process in coal preparation,technical features and advantages of different deshaling equipment were compared.Application progress of various coal dry separation process and technology was also introduced,and technical characteristics and future development direction of different coal dry separation process and equipment were discussed.The objective of power coal dry separation is to enhance clean coal product heating value and remove its refuse rock and sulfur content.There are many advantages such as no product moisture increase and low processing cost.With the new processes of classified separation,lump coal dry separation,fine coal dry separation,dual quality upgrading of pre-drying and dry separation process and air dense medium separation,process flowsheet of coal dry preparation plants can realize custonized design,which makes up for the limitation of traditional single FGX dry coal cleaning process and equipment.It will be an inevitable tendency for the future dry coal preparation plant designers to develop high efficient,large scale,low energy consuming,lower efficient separation bottom size type dry separation process and equipment,and high-efficient,economical,large scale coal preparation plants.
Keywords：coal dry separationX-ray intelligent sortinglump coal dry separationfine coal dry separationdrying & dry separation processair dense medium separation
Publication Date：2017-01-01