▎ 摘　　要

NOVELTY - Producing carbon fiber involves subjecting raw coal to a liquefaction process to form a pitch or a pitch resin. The pitch or pitch resin is refined to produce a mesophase pitch with a degree of anisotropy between 20-99%. The mesophase pitch or pitch resin is subjected to a low-crystallinity spinning process to form raw fiber. The raw fiber is subjected to a fiber stabilization process using oxygen to produce stabilized carbon fibers. The stabilized carbon fiber is subjected to a carbonization process to form a carbonized or calcinated carbon fiber. USE - Method for producing carbon fiber, where carbon fiber is used in a variety of composite materials, by virtue of its excellent properties such as high strength, high elastic modulus, and high electrical conductivity. ADVANTAGE - The method can use a low-cost and high-yielding coal-based pitch precursor that is advantageous from conventional high-cost and low-yielding PAN-based or cellulosic-based insulative fiber. The systems and methods also can provide carbon fiber products in a manner that allows low cost pitch-based carbon fiber to fulfill all useful applications in a way that significantly reduces costs versus incumbents. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method of producing graphene, which involves: (a) mixing coal with a cellulose-enriched biomass to form a biomass mixture; (b) grinding the biomass mixture into a powder; (c) subjecting the powder to a graphitization process to form a graphite; (d) acid leaching the graphite to remove impurities; and (e) shear mixing the graphite to form a graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a flow chart of a method of processing coal.