FIELD: production of metallic or cermet fibrous filtering materials. SUBSTANCE: method includes treatment of organic fiber, mainly, NITRON with solution of hydrazine, saponification, washing with water and drying. Method is distinguished by that after washing with water ion exchange is effected on fiber from solution of salts of nickel, copper, zirconium or silver for 0.5 h at room temperature, and after drying, heat treatment is carried out for 1 h in the air at temperature providing for removal of fiber organic base. EFFECT: higher efficiency. 9 cl
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