▎ 摘　　要

NOVELTY - Producing process flow of graphene involves using a grinding machine to grind the power coal without calcium carbonate into coal powder. The water is used to blend the coal powder into water coal slurry. The water coalslurry is pumped into the electric stainless steel centrifugal sieve by slurry pump. The coal water slurry of the small particle coal powder is removed. The particle is large because the coal gangue in the coal is hard to grind into powder, and a portion of the coal packue particles and coal particles are retained in the electric steel sieve. The bottom of the sieve is opened to unload the coal Gangue and coal with large particles. The specific gravity of coal is less than the set high pressure. The cleaned coal is washed by the coal washing machine, and the fine coal is sent to the electric centrifugal dewatering machine. The fine coal residue is dried. USE - Method for producing graphene used in the future of the chip. ADVANTAGE - The method is capable of efficiently and economically producing the graphene with high yield and purity and without calcium carbonate and impurities thus improving the quality of the graphene, and reduces the production cost of graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a structural diagram of the screw extruding continuous steam explosion mill equipped with high temperature resistant static pressure sealing ring. 1Electric spiral conveyor 2Rhombic large hopper 3Electric spiral extruding machine 5Transverse pipe 6Impeller 10Hammer head 11Air cylinder 12Digester rectangular vertical pipe 13Variable speed spiral conveyor 14Fuel burner 15Electric spiral unloading machine 16Spraying pipe 17Valve cover 19Output circular plate