Filter Press Cloth / Filter Cloth For Press Filters / Membrane
Press Filter Cloth
Press filter cloth has always been a crucial component in the press filters. It’s
quality and correct selection decides the throughput and filtration
performance. Nowadays 98% of the press filtration equipment using
filter cloth as the filter medium. The press filter cloth has
obvious widely range applicability and serviceability.
To get better performance and meet various working conditions like
high tensile strength, acid, and alkali resistance,
high-temperature resistance, abrasion resistance, etc., generally,
the press filter cloth is made out by special fiber include PP,
Polyester, Nylon, PTFE, Aramid, etc, which has respective
advantages. Sometimes the single material fighting by itself, and
sometimes two or more of them are mixed in one to suit complex
filtration requirements.
The press filter cloth also has diverse weaving type to obtain
different particle retain and filter cake discharge capacity.
For instance, press filter cloth in twill weave has more smooth
surface than plain weave for easy cake release and larger aperture
for dewatering and anti-blinding. It’s suitable for high viscosity
slurry.
Press filter cloth
There are three types of the vertical filter press – Chamber press
filter, Plate & frame press filter, and Membrane press filter. Even
though the press filter cloth for the three above are all quadrate,
they are different.
The press filter cloth for membrane and chamber press filter are
the same, connect two pieces of square filter cloth by the central
neck tube, and the cloth for plate & frame press filter is a single
square piece with open circular space at the corresponding
position.
How to choose the filter press cloth for your press filters?
1) Select the material: According to the filtrate chemical and
physical properties to choose the ideal material of the press
filter cloth, see synthetic fiber chemical & physical properties.
2) Select the fiber: There are monofilament, multifilament, short
fiber, etc. of filter press cloth for press filters, the fiber
influence the filtration performance, strength, regeneration, and
other properties.
3) Choosing the right weave pattern
The weave pattern affects the precise, cake discharge and cloth
regeneration performance.
4) Cloth after-treatment, heat set treatment
5) Filtration experiment on the raw materials slurry is important
after the preliminary selection of the filter press cloth. A sample
experiment was carried out on the material filtration to check the
filtration rate, retention performance, filter cake moisture
content, cake release performance, regeneration properties, etc.
