▎ 摘　　要

NOVELTY - Preparing graphene powder using flake graphite as raw material comprises (a) pre-treating 10% crystalline flake graphite, mixing and stirring with 0.01% intercalation agent, 89.79% solvent and 0.2% penetrant for 0.5 hours to obtain suspension, (b) grinding the suspension in two steps in a grinding device to gradually increase the grinding pressure and speed, and vacuum extracting to obtain graphene dispersion, and (c) performing spray drying to the graphene dispersion to obtain graphene powder. USE - The method is useful for preparing graphene powder using flake graphite as raw material. ADVANTAGE - The method is simple to operate.