▎ 摘　　要

NOVELTY - Batch preparation of graphene powder comprises using graphene colloidal solution flocculation flotation reagent as electrolyte, quick floating graphene in the solution, and preparing graphene powder. USE - The method is useful for batch preparation of graphene powder (claimed). ADVANTAGE - The method can prevent reduction of graphene agglomeration; achieves quick and easy washing; is simple to operate, which is good for batch production; has large-scale industrial application prospect; has less Impact on the environment throughout the reaction; discharges waste liquid with less amount of iron; and reduces the processing cost.