▎ 摘　　要

NOVELTY - The method comprises: preparing a molten iron by reacting iron ore with a carbonaceous reducing agent; obtaining a reductant gas containing carbon monoxide during the production of molten iron; and producing graphene sheet using the reductant gas and then plasticizing at 900-1300 degrees C for 5-15 hours. The iron ore is mixed with additives during the production of molten iron to form a reducing body. The method further comprises supplying oxygen to the carbonaceous reducing agent. The reductant gas is contained in a melter gasifier. USE - The method is useful for manufacturing a graphene sheet (claimed). ADVANTAGE - The method is capable of manufacturing the graphene sheet in a simple, cost-effective and eco-friendly manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a device for manufacturing a graphene sheet.