▎ 摘　　要

NOVELTY - one for coal blending composite filter material of blast furnace gas boiler smoke dust, wherein it comprises orderly laminated oxidation graphene film filtering layer, polysulfonamide fibre, polyimide fibre and polyfluortetraethylene fibre mixed layer, polytetrafluoroethylene filament base cloth layer, polysulfonamide fibre, polyimide fibre and polyfluortetraethylene fibre mixed layer, polysulphone fibres, polyimide fibres adhered on the upper and lower surface of the polytetrafluoroethylene filament base cloth layer and polytetrafluoroethylene fibre mixed layer by a needle machine. graphene oxide filter film layer attached on the polysulfonamide fibre, polyimide fibre and polyfluortetraethylene fibre mixed layer wherein the one outer surface. The utility model has high temperature resistance, corrosion resistance, long service life of filter bag, low operation resistance, good dust removing effect and stable operation.