▎ 摘　　要

NOVELTY - Preparing liquid type graphite additive comprises (i) grading graphene raw material by mechanical grinding or ultrasonic shearing process, (ii) adding processed graphene powder into oily medium, (iii) mixing graphene powder and oily medium, ultrasonic dispersion mixture for 2-24 hours, and (iv) carrying out ultrasonic treatment of graphene suspension, centrifuging, removing large-size particles present in suspension to obtain final product, where amount of additive graphene is 2-20 g/l. USE - The method is useful for preparing liquid type graphite additive (claimed). ADVANTAGE - The additive has simple preparation process and excellent repeatability.