Troubled by fly ash dust emission in power plants? SJ double shaft screw humidification mixer stabilizes powder moisture

Industry Pain Points of Fly Ash Dust Suppression

At the discharge point after dust collectors in thermal power plants, collected fly ash tends to generate secondary dust. Improper moisture control is the main cause. Insufficient water leads to airborne powder and site pollution, while excessive water causes material caking and sticking, disrupting transportation and storage. Simple spray systems often deliver uneven water distribution and unstable moisture, failing reliable long-term dust control.

Structure and Conditioning Principle of SJ Double Shaft Screw Humidification Mixer

The SJ double shaft screw humidification mixer is engineered for powder conditioning and dust suppression, suitable for installation downstream of dust collectors. It adopts twin synchronized spiral blades and an independent water spray system. Operating water pressure ranges from 0.4–0.8 MPa, delivering even water supply and keeping outlet moisture steadily between 15% and 20%. Mixing blades can be made of wear-resistant special alloy or composite ceramic to resist abrasion from fly ash. Driven by a gear reducer, the main shaft runs at a constant speed of 34 r/min for stable, low-noise operation. A hand oil pump centralized lubrication system feeds four drive bearings, simplifying routine maintenance.

Key Selection Guidelines

This product line offers throughput from 10 t/h up to 200 t/h, with screw diameters ranging from Φ400 mm to Φ800 mm. Select the model mainly according to hourly fly ash capacity, and verify that on-site water pressure falls within 0.4–0.8 MPa. Its compact footprint works well for plants with limited floor space. Besides power plant fly ash, this mixer also supports powder humidification in metallurgy, mining, building material and chemical sectors.

Conclusion

Stable moisture regulation is essential to solve secondary fly ash dust at power plants. With adjustable water spraying, wear-resistant mixing parts and a full range of models, the SJ double shaft screw humidification mixer provides a standardized conditioning solution for dust collector outlets, keeping powder moisture within the reliable dust suppression range.