▎ 摘　　要

NOVELTY - Preparing graphite composite large particle purifying agent comprises (i) drying the activated carbon particles, then ultrasonically dispersing and mixing with the graphene dispersion for 100-200 minutes and then drying to obtain graphene composite activated carbon, where in the graphene dispersion, the concentration of graphene is 1-3 mg/ml and the activated carbon particles have a particle size of 10-50 meshes, (ii) immersing graphene composite activated carbon in the pure aqueous rice flour solution and continuously stirring the mixture for 30-60 minutes, then heating at 60-90 degrees C for 120-200 minutes to obtain network gel of graphene-loaded activated carbon, where the amount of rice flour in pure aqueous rice flour solution is 30-60%, and (iii) drying the network gel pellet of the step (ii) and then carbonizing at 400-800 degrees C for 2-6 hours to obtain graphite composite large particle purifying agent. USE - The graphite composite large particle purifying agent is useful for air purification (claimed). ADVANTAGE - The graphite composite large particle purifying agent: exhibits synergistic effect; and has excellent adsorption effect, gas adsorption capacity and higher saturated adsorption capacity and long service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphite composite large particle purifying agent is obtained by above method.