▎ 摘　　要

NOVELTY - Preparing high calorific biomass particle fuel comprises (i) crushing straw to a particle size of 2-6 mm to obtain a crushed material; (ii) adding water to the crushed material, stirring uniformly, adjusting the water content to 32-34%, stacking, sealing the membrane, allowing to stand for 2-3 days to obtain soaked material; (iii) adding modified nano-titanium dioxide and graphene to the soaked material and stirring uniformly to obtain a mixture; (iv) placing mixture in a molding machine, and extruding to obtain a molding material; and (v) placing molding material in a freeze dryer and freeze-drying to a water content of 11-13%. USE - The method is useful for preparing high calorific biomass particle fuel. ADVANTAGE - The method is simple, improves the binding ability of crushed straw biomass fuel, increases the porosity of the biomass fuel, avoids slag bonding and coking phenomenon, reduces sulfur dioxide and sulfur trioxide emissions and improves combustion performance of the fuel. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for high calorific biomass particle fuel prepared by above mentioned method; and #use method of, comprising burning the high calorific biomass fuel to obtain carbon ash, which can be directly applied to the soil as a fertilizer.