Filtration and the Use of Different Types of Filter Cloth

by Kristen White Blogger Filtration has become an important process in the modern world because it impacts our daily lives. This is because rapid growth and development of countries across the world have resulted in pollution and environmental degradation. There are several factors that you need to consider when searching for filter fabric specifications to improve the quality of the filtration process. This article focuses on filter cloth and other factors that may directly or indirectly affect the quality and quantity of the filtration process.

Development and Design of Filter Media
The development of filter cloth depends on various factors that should also be considered when searching for filter fabric specifications. Some of the factors include:

Thermal conditions
Chemical conditions
The required equipment
Overall cost

Different polymers of the filter cloth can be used but its selection depends on the thermal and chemical conditions of the substance to be filtered. For instance, you can use natural fibers such as cotton which can make highly effective media. However, natural cotton is not long-lasting compared to synthetic fibers. Other materials that can be used as a filter bag include polyester, polypropylene, and polyamide. However, the most effective material is polytetrafluoroethylene commonly known as PTEF. This is because it offers numerous advantages such as resistance to all chemicals, it is naturally hydrophobic, bio-compatible, and bio-stable as well. You can find these filter materials online and you can also purchase pressure vessels in Australia.

Classification of Filter Material
Filter material is classified based on raw material and industrial processes.
Classification Based on Raw Material
Classification of filter cloth based on raw material is mostly used in the filtration process on a woven structure. They include
Cotton
Polyester
Nylon
Vinylon
Polypropylene

Cotton Filter Cloth
Cotton material should be deep in the alkali solution for a proper gasket effect during the filtration process. Naturally, cotton fabrics are ideal for neutral filter pulp with a temperature below 100°C, a maximum of 20°C for acidic filtration and below 10 degrees for alkali solution

Polyester Filter Cloth
Many manufacturers continue to accept the use of polyester filter cloths due to its strong acid resistance and effective resistance against high temperatures usually above 150°C. As such, it is possible to single out surface finishes other excellent features of polyester that make it an effective filter material include high tensile strength, resistance to wear and tear, high permeability, and sleekness.

Nylon Filter Fabric
Nylon is mostly used because it has the highest resistance to rubbing compared to the top three filter fabrics namely cotton, polyester, and polypropylene. It is therefore mostly used in filtration applications of wet solids and dust. It is also effective in ceramics, metallurgy, wastewater treatment, and mining.

Versatile Polypropylene
PP filter fabric is mostly used in the liquid-solid filtration process due to its exceptional filter cake release and effective resistance to most acids and basic solutions. It is also the preferred choice for dye production because of its low moisture absorption. It works best at a regular temperature of 90°C. It is mostly used in wastewater treatment plants, mining, and metallurgy.

Vinylon Filter Cloth
The best properties of vinylon include incredible resistance to alkali and excellent moisture absorption. It is highly durable compared to cotton and has outstanding resistance to abrasion.

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Created on May 18th 2020 06:36. Viewed 273 times.

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