系统介绍了固体颗粒在回转光壁圆筒内运动时的偏析现象及发生机理和影响因素的研究成果,并作了简要评述,最后指出了其研究方向及尚待研究的课题。 The segregation phenomenon, mechanism and influence factors of segregation of solid particles during the movement in a rotating light-wall are introduced systematically and briefly reviewed. At last, the research directions and issues to be studied are pointed out.