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Nov 06, 2024
The filter cloth is an important part for liquid-solid separation in filter presses, membrane filter presses, and chamber filter presses, achieving solid-liquid separation by intercepting solid particles and allowing liquid to pass through. It is widely used in sludge dewatering, mineral processing, chemical, food, pharmaceutical, metallurgy and other industries. The following is a selection guide for filter press cloths.
Identify the filtrate property
The selection of the appropriate filter cloth should be based on the acidity or alkalinity of the filtrate. In the event that the filtrate is acidic or alkaline, it is necessary to select different filter cloths accordingly.
Consider the filtrate temperature
The temperature of the filtrate can significantly impact the overall efficiency of the filter cloth in operation. In the event that the filtrate is of a high temperature, it is necessary to select a filter cloth that is resistant to high temperature.
Analyze the separation characteristics of filter residue
If the filtrate residue surface is smooth and non-adhesive, the filtrate can be quickly leached out of the filter cloth. On the contrary, if the filter residue is adhesive, the filtration process will be prolonged, thereby reducing efficiency. In such instances, it is advisable to opt for monofilament or satin weave filter cloths.
Choose the appropriate material
Common filter cloth materials include polyester, polypropylene, polyamide, etc.
Ensure the tensile strength and corrosion resistance
It is essential that filter cloths possess a certain tensile strength to withstand repeated squeezing and use. Meanwhile, the filter cloth must offer a certain degree of corrosion resistance, as the filtrate may contain corrosive substances.
Pay attention to the air permeability
When selecting filter cloth, it is also necessary to consider the requirements for the air permeability and filtration accuracy. The selection of air permeability should be based on the requirements for filtration accuracy in practical applications.
Consider the regeneration property of filter cloth
Filter cloth with good regeneration property can reduce the number of cloth changes and reduce maintenance costs.
In conclusion, the choice of filter press cloth should consider the characteristics of the filtrate, temperature, acidity and alkalinity, as well as the fabric material, tensile strength, corrosion resistance, air permeability and other factors. Selecting an appropriate filter cloth can extend the service life of the cloth and reduce costs, while also enhancing filtration efficiency.
