▎ 摘　　要

NOVELTY - Preparing graphene comprises (i) passing the working gas into the plasma torch, after arcing, forming magnetic rotating arc plasma under the action of the external magnetic field, (ii) taking micron-sized carbon material as raw material, using the conveying gas as carrier gas into the plasma torch, passing through the magnetic rotating arc plasma high temperature area to sublimate, the carbon material is amorphous carbon, at least one of graphite, and (iii) cooling the product with the carrier gas in the cooling chamber. USE - The method is useful for preparing graphene. ADVANTAGE - The method has short flow, high yield, and environmentally friendly, high energy conversion rate and is suitable for industrial production.