Influence of Lignin Addition on Coke Strength

In the steel industry, promoting use of low-grade coal is important because depletion coking coal. To compensate for lack caking property low-quality coals, binders must be added to produce coke from blends. Lignin an aromatic polymer and one main components, accounting 30% wood. The chemical structure characteristics lignin differ depending on raw woody biomass extraction method used. this study, find biomass-derived binders, alkali lignin, sulfuric acid kraft organic solvent phenolated (lignophenol), torrefied lignophenol were blended at a ratio 3 mass% with powder (coking coal: thermal = 1:1). was carbonized form coke, its bulk density strength measured. With addition almost same or decreased, decreased significantly, regardless type. Lignophenol expected potential binder it observed thermoplastic melting temperature by in situ camera; however, largely reduced fluidity strength. samples did not behave like asphalt pitch, concluded that difficult as