▎ 摘　　要

NOVELTY - The method involves spraying water-soluble inorganic salt crystals on the surface of the graphite raw material surface to collect the mixture of graphite fragments and inorganic salts, and separating to obtain graphite powder material. USE - Method for preparing graphene powder material used in preparation of graphene sheet used in electronic device. Uses include but are not limited to mobile phone, personal digital assistant (PDA), laptop computer, digital camera, digital video camera, portable game machine, portable information terminal, portable telephone, digital music player, digital photo frame, portable DVD player, etc. ADVANTAGE - The method enables to prepare graphene powder material with low cost, simple operation, short time and environment-friendly technique. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a method for preparing graphene powder material.