Filter cartridge for dust purification

The utility model discloses a filter cartridge for dust purification, and relates to a composite industrial waste gas purification device. The filter cartridge comprises a filter cartridge body, an outer steel skeleton, an inner steel skeleton, an activated carbon fiber filter material, a support plate and bolts, wherein the outer steel skeleton and the inner steel skeleton are arranged on the filter cartridge body; the activated carbon fiber filter material is arranged between the outer steel skeleton and the inner steel skeleton; the support plate is arranged at the outer end of the activated carbon fiber filter material and is fixed together with the outer steel skeleton and the inner steel skeleton through the bolts. The filter cartridge can be used for concentratedly treating composite waste gas and trace amount of dust and is not limited by gas flow directions. The filter cartridge is high in purification efficiency, good in adsorbability and high in practicability.