Several important parameters used for judge modifying efficiency,such as activation index,sedimentation height in olefin and surface contact angle were evaluated.

• 并利用活化指数、沉降高度和接触角预先评价了改性效果,同时考察了磨矿浓度、偶联剂用量、球料比、改性时间、磨机转速等因素对改性效果的影响。