The invention provides a high-temperature
filter material and a preparation method and application thereof. The high-temperature
filter material is
composite filter cloth with a single layer structure or
composite filter cloth with a multi-layer structure, and the
composite filter cloth is prepared from, by
mass, 10%-90% of Podlon fibers and 10%-90% of
polytetrafluoroethylene fibers. The preparation method of the composite filter cloth with the single layer structure in the high-temperature
filter material comprises the steps of
raw material mixing, opening,
carding, web lapping, multi-layer
fiber web layer forming, needle-
punching, shaping,
calendering and finished product obtaining; The preparation method of the composite filter cloth with the multi-layer structure in the high-temperature filter material comprises the steps of
raw material mixing, opening,
carding, web lapping, multi-layer
fiber web layer forming, combined needle-
punching, compound needle-
punching, shaping,
calendering and finished product obtaining. According to the application of the high-temperature material, the composite filter cloth with the single layer structure or the composite filter cloth with the multi-layer structure is used for high-temperature
flue gas dust removal equipment. The high-temperature filter material has the advantages of being high in strength and having certain density and elasticity and is of an astatic three-dimensional structure which can be a single-layer structure or a multi-layer structure.