BELT VF Series
Filter fabrics for horizontal vacuum filters are used for
filtration of very fine inorganic suspensions, especially in the
mining industry, and for gypsum filtration in flue gas
desulphurization (FGD) plants.
To increase the ability of the belt to filter very small particles,
some filters fabrics are made of the combination of PET
monofilament and multifilament yarns (multifilament yarns filling
apertures in the monofilament). One of the disadvantages of using
multifilament yarns is a quick decrease in the air permeability of
the fabric during operation, because blinding occurs faster than
usual and consequently the fabric service life is shorter. In the
past, we used different types of single or double layer
monofilament fabrics with small apertures, capable of filtering
very small particles without blinding. If the monofilament fabric
is to have a large amount of small apertures, small-diameter
monofilament yarn has to be used. On the other hand, the bending
resistance of the monofilament fabric is lower than that of the
multifilament fabric. If the monofilament fabric is installed on a
large filter belt, the risk of rippling and damage to the fabric
will be higher.
Nowadays, we offer a new generation of filter fabrics made of
monofilament yarns. Thanks to their unique construction, they have
great filtration and mechanical properties (including high bending
resistance), which makes them suitable for wide belt filters with
high demands on mechanical properties of the fabric.
