Phosphate Ore Filter Bag Applications in Dust Collection Systems

Dust generated from phosphate ore processing contains fine particles with high moisture and corrosive properties. These conditions pose specific filtration challenges, especially in high-temperature or chemically reactive environments.

Working Conditions

• High dust loading with sticky, fine particles
• Presence of acidic gases (e.g., SO₂, phosphoric acid mist)
• Elevated gas temperatures (typically 150–220°C in some zones)
• Low outlet emission requirements (often <50 mg/Nm³)
• Dust has recovery value and can be recycled

Typical Application Points

Filter Bag Customization Options

Besides standard sizes, filter bags can be fully customized:

• Length, diameter, and thickness according to collector design
• Stitching thread options (e.g., Aramid, PTFE) for improved durability
• Top/bottom configurations: snap band, cuff, or flange collar
• Surface treatment: membrane lamination, silicone coating, anti-stick finishes
• Inner linings for moist or agglomerating dust conditions

Sample Technical Parameters

Operation Notes

In phosphate processing, filter bags typically experience rapid dust cake buildup. Cleaning cycles are commonly set between 5–10 minutes. Pulse pressure should stay around 0.4–0.5 MPa. Too high can damage the fabric; too low affects cleaning efficiency.

For acid mist environments, proper thermal insulation and dew point control of the dust collector housing is critical. Moisture accumulation accelerates bag degradation, especially with fiberglass or PTFE-based filters.