Features of Filter Cloth
1. Filter cloth is used for sludge dehydration in sewage treatment factories. They have the characteristics of good water permeability, air permeability and non-revealed sludge, acid-resisting, alkali-resisting, heat resistance (180°C) .Because of their designing structure, the sludge can be peeled off easily after pigeonhole filter, so the screen are easily cleaned and have a long working time. Therefore they are designed specially for sludge dehydration.
2.Filtration fabrics for belt filter presses are characterized by high strength, resistance against abrasion and high dimensional stability. Fabric construction secures good water drainage and at the same time protects the sludge cake form going through the fabric. Individual fabric designs differ in speed of dewatering, size of apertures, surface smoothness for easy cake release, resistance against abrasion, etc.
3. Fabrics for belt filter presses are equipped with stainless steel clipper seam and belt edges are melted. There is also the possibility to connect the fabric onto endless belt by using a woven seam, which is stronger and has a higher lifetime than clipper seam.
Application of Filter Cloth
Dewatering of municipal sludge in sewage plants
Dewatering of paper sludge and pulp
High pressure dewatering of pulp
Production of fruit and vegetable juices
Production of wine
Dewatering of minerals in mining industry
Dewatering of sand
Dewatering of sludge in agriculture
Other industrial separation processes
Technical Parameter of Different Kinds of the Filter Cloth
PP Filter Cloth 750B
| Material |
PP |
The type |
750B |
| Technology |
Single layer |
Weave method |
twill |
| Nature |
acid/alkali-resisting Thickness |
0.88mm |
| Air perm |
35(L/m2·s) |
Unit weight |
450-460 (g/m2)
|
| Warp density |
268 (root/10cm) |
Weft density |
157 (root/10cm) |
| With or without the filter material |
Without |
|
PP Filter Cloth 840-1(A) (750A)
| Material |
PP |
The type |
Multifilament |
| Technology |
Double layer |
Weave method |
Plain |
| Nature |
alkali/heat/cold-resisting, water proof Thickness |
0.88mm |
| Air perm |
35(L/m2·s) |
Unit weight |
471 (g/m2)
|
| Application |
Dust |
Air clear |
PP Filter Cloth 840-3
| Material |
PP |
The type |
Multifilament |
| Technology |
Double layer |
Weave method |
One Plain/one Twill |
| Nature |
acid /alkali /heat -resisting Thickness |
1.36mm |
| Air perm |
111.6(L/m2·s) |
Unit weight |
500 (g/m2)
|
| Application |
Coal dressing |
Air clear |
| Warp density |
333 (root/10cm) |
Weft density |
204 (root/10cm) |
| Application |
Dust |
Air clear |
PP Filter Cloth 700AB
| Material |
PP |
The type |
700AB |
| Technology |
Double layer |
Weave method |
Plain |
| Nature |
acid /alkali /cold -resisting Application |
Sludge |
| Application |
Water processing |
filter |
PP Filter Cloth 700A
| Material |
PP |
The type |
700A |
| Technology |
** |
Weave method |
Plain |
| Nature |
acid /alkali -resisting Thickness |
0.7mm |
| Air perm |
11.79(L/m2-s) |
Unit weight |
350(g/m2) |
| Warp density |
204 (root/10cm) |
Weft density |
106 (root/10cm) |
Filter Cloth 120-7
| Material |
PE |
The type |
120-7 |
| Technology |
Sigel layer |
Weave |
Twill |
| Nature |
acid /alkali /heat/cold -resisting Thickness
|
1.42mm |
| Air perm |
54(L/m2·s) |
Unit weight |
610(g/m2) |
Filter Cloth 822
| Material |
PE |
The type |
120-7 |
| Technology Sigel double layer |
Weave Plain,Twill |
| Nature |
acid /alkali /heat/cold -resisting Thickness
|
0.5mm |
| Air perm |
100(L/m2·s) |
Unit weight |
600(g/m2) |
| Warp density |
30 (root/10cm) |
Weft density |
27 (root/10cm) |
Filter Cloth 621
| Material |
PE |
The type |
Multifilament |
| Technology |
Sigel layer |
Weave |
Plain |
| Thickness |
|
0.63mm |
| Air perm |
11.34(L/m2·s) |
Unit weight |
390(g/m2) |
| Warp density |
188 (root/10cm) |
Weft density |
137 (root/10cm) |
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