By changing the kind of raw coal,oil amount,particle size of the coal and stirring time,several experimental methods for removal of ash with selective oil agglomeration were performed.

• 结果表明:变质程度较高的煤种更有利于团聚,随着油用量、原煤解离程度及搅拌时间的增加,以及团聚物的粒度增加,精煤的灰分降低。