▎ 摘　　要

NOVELTY - The device has first and second containers (11,12) that hold graphite slurry. A micro-reaction channel (1) is formed between containers. An ultrasonic device (2) is arranged between containers to control temperature of channel for stripping graphite paste in the channel. A first peristaltic pump (21) is arranged between first container and channel to pump the graphite slurry in the first container through channel. A second peristaltic pump (22) is arranged between second container and channel to pump graphite slurry in second container to first container through channel. USE - Device for preparing graphene. ADVANTAGE - The structure of graphene preparing device is simplified. The operating efficiency of graphene preparing device is improved. The small diameter graphene is prepared effectively. The quality of graphene is improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the device for preparing graphene. Micro-reaction channel (1) Ultrasonic device (2) Containers (11,12) Peristaltic pumps (21,22) Pipes (31,32)