▎ 摘　　要

NOVELTY - Preparation of magnetic graphene comprises putting graphite particles and solvent in stirring device, stirring graphite particles, stripping graphene from splitting tooth to form colloidal dispersion of graphene sheet and solvent, centrifuging to remove graphene sheet, rotating graphene suspension or graphene liquid in magnetic field environment to produce graphene sheet suspension and graphene liquid suspension, magnetizing graphene in magnetic field environment, forming magnetic graphene, mixing suspension, filtering, washing and drying to obtain magnetic graphene. USE - Method for preparing magnetic graphene (claimed). ADVANTAGE - The method has simple preparation process. It improves magnetic graphene production efficiency and solves magnetic graphene of high area ratio and purity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for magnetic graphene preparation device which comprises motor, stirring blade, splitting tooth and container.