▎ 摘　　要

NOVELTY - Preparation of graphene involves dispersing different graphite raw materials in an aqueous dispersion of graphite derivative, peeling off the graphene, treating in a shearing apparatus for predetermined time, maintaining the separated mixture for predetermined time, centrifuging, separating the supernatant as pure graphene solution, and calcining graphene-enriched suspension to obtain graphene. USE - Preparation of graphene (claimed). ADVANTAGE - Graphene is produced efficiently and economically with high stripping efficiency and without affecting the environment.