关键词: filter aid;specific cake resistance;compressible index

Abstract: Pressure filtration and filter aids should be adopted in filtration of high-viscosity
molten chemical fibercontaining foreign materials and gel particles. Theoretical analysis
and argumentations on manners of assistedfiltration and specific requirements of filter
aids are performed. Measurement and comparison on properties ofseveral filter aids are also
carried out, conclusions and suggestions are put forward.

Key words: filter aid, specific cake resistance, compressible index