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Aug 28, 2024
Disc filter cloth is a critical component in disc filter systems for solid-liquid separation. Its performance directly affects filtration efficiency and final product quality.
Disc filter cloth is specifically designed to match the filter segments of disc filters and is typically cut into trapezoidal or fan-shaped to maximize effective filtration area.
Unlike other filter media, disc filter cloth must maintain excellent structural stability under complex operating conditions, including high-speed rotation, alternating vacuum suction, and back-blowing cake discharge.
The selection of disc filter cloth materials depends on the chemical properties, temperature, and process requirements of the filtered material:
Polypropylene (PP) Filter Cloth
PP filter cloth offers excellent resistance to acids and alkalis and is widely used in mining and metallurgical applications with neutral to mildly corrosive environments. It is a preferred choice for metal concentrate dewatering.
Polyester (PET) Filter Cloth
PET filter cloth features high mechanical strength and dimensional stability, with good resistance to weak acidic media. It is suitable for applications requiring enhanced tensile strength and durability.
Polyamide (PA / Nylon) Filter Cloth
PA filter cloth provides outstanding abrasion resistance and excellent alkali resistance. It is commonly used for filtering strongly alkaline materials, such as red mud dewatering.
Iron Ore Concentration
Used for iron concentrate slurry dewatering, ensuring high recovery rates and producing low-moisture, high-quality iron concentrate.
In copper, lead, zinc, and nickel concentrate dewatering processes, wear-resistant and oxidation-resistant filter cloths significantly extend service life and reduce operating costs.
Applied in the dewatering of flotation clean coal and tailings, where good air permeability and mechanical strength are essential.
Inorganic Chemicals
Filtration and washing of calcium carbonate, kaolin, and other powders require corrosion-resistant filter cloths with good cake release properties.
Environmental Industry
In municipal wastewater treatment plants, sludge dewatering benefits from specially surface-treated filter cloths that reduce sludge adhesion and improve dewatering efficiency.
Phosphate Industry
In wet-process phosphoric acid production, phosphogypsum separation requires filter cloths with excellent resistance to phosphoric acid corrosion.
Starch and Sugar Industry
Dewatering of starch requires food-grade filter cloths with smooth, easy-to-clean surfaces.
When selecting disc filter cloth, it is essential to comprehensively consider structural design, material properties, and specific operating conditions. Precise matching ensures optimal disc filter performance, stable product quality, and long-term operational efficiency.
