▎ 摘　　要

NOVELTY - The process involves injecting a first stock of reactants into a first inlet near a first end of a reactor, the first stock comprising a graphitic material and an acid or an intercalating agent, allowing the reactants to react with one another while being driven to flow from the first end to a second end, downstream from the first inlet, of the reactor to form a first reaction product slurry. The graphitic material is intercalated with bisulfate downstream of the first inlet to form an intercalated graphite. The first reactant product slurry is driven to flow through a conduit, back to the first end and re-enter the reactor through a second inlet near the first end, allowing the first product slurry to flow from the first end to the second end of the reactor to form a second reaction product slurry. The second reaction product slurry or the finishing product slurry is collected from an outlet of the reactor arranged downstream from the first inlet, to produce graphene material. USE - Process for manufacturing a graphene material. ADVANTAGE - Provides a method of producing graphene sheets (single-layer or few layer graphene having 2-10 layers) from particles of a graphite or graphitic carbon material in a shorter period of time, using lesser amounts of intercalant and oxidizer, and achieving a higher production yield (without consuming any significant amount of starting material). The process entails subjecting reacting mass into numerous vortex flow zones having high shear stresses and shear strains therein, enabling fast, uniform, and complete intercalation/oxidation of graphite/carbon particles. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) process for manufacturing graphene oxide; (2) process for manufacturing pristine graphene.