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In long tunnels, it functions like an invisible "vacuum cleaner." As the name suggests, coal mine ventilation duct fabric is used for air supply and ventilation. Its powerful negative pressure can thoroughly extract harmful gases such as dust from deep within and expel them cleanly. Suction determines distance, and distance determines safety. Our negative pressure ducts feature a streamlined design with a robust framework.

This type of coated fabric positive and negative pressure duct is commonly used in coal mines, iron mines, tunnels, and factory buildings. Depending on the material, positive and negative pressure ducts can also be flame-retardant and anti-static, which is a highly popular feature. Supplied directly from the manufacturer, our coated fabric positive pressure ducts for mining are used for positive pressure ventilation in coal mines, tunnels, and underground local fan operations.

Varieties of mining coated fabric negative pressure ducts: Based on the coated fabric material, ducts are categorized into rubber-coated positive pressure ducts, plastic-coated positive pressure ducts, and rubber-plastic composite coated positive pressure ducts.

II. Performance Test Report for Mining Coated Fabric Negative Pressure Ducts

Duct Diameter (mm)    Hundred-Meter Air Resistance (ns2/m?)

300     ≤811.0     

400     ≤196.0      

450      ≤122.0   

500     ≤54.0     

600     ≤24.0      

800     ≤6.0    

1000     ≤2.0      

Applications of Mining Ventilation Ducts:

Uses: Suitable for positive pressure ventilation in local fan operations in various mining underground excavation sites and tunnel engineering projects. Technical Features: Compared to rubber ducts, they offer lower air resistance, longer lifespan, lighter weight, lower cost, and excellent flame retardancy.

Mining ventilation ducts include positive pressure ducts, negative pressure ducts, skeleton ducts, exhaust ducts, and supply ducts. In short, Lesen Mining Ducts has everything you need. Would you like me to help you choose one? Whatever type of duct you need, feel free to reach out to me!