2、High efficiency of
cleaning and low density of gas.
The experiment shows:
efficiency of filtering
325 eye talc powder( middle diameter 7.5μm around ) can be up to
99.9%-99.99%, improve a order of a magnitude than the cotton
flannel. Gas density can be greatly lower than the country
3、After heating, singeing
and coating treatment, the surface should be smooth, difficult to stop up and
out of shape, easily-dedusting and long using-life usually 1 to 5 times
longer than mechanical filter cloth.
4、Extensive use and
good chemical stability. It can filter normal atmospheric temperature or
high-temperature gas including corroding gas mixed with acid and
alkali, water, oil. Needle-punching felt is widely used in metallurgy, chemical
industry, building materials, smelting,
generating electricity, pottery, machinery, mine, petroleum,
food, grain processing, etc. It is an ideal medium to separate
liquid from solid and ideal material to purify and filter gas.