Fly Ash
Mobile handling for fly ash and other coal combustion products at power stations and ash beneficiaries.
SANTO supplies mobile conveying, stacking and loading equipment engineered for fly ash — from receiving and stockpiling to reclaim and load-out. The notes below cover the properties that matter, the problems that typically appear on site and the machines we recommend.
Why Mobile Conveying Suits Fly Ash
Fly ash is a fine, pozzolanic powder (bulk density ~0.6–1.0 t/m³) that is air-borne, abrasive and mildly alkaline. The low feeder track stacker receives ash from truck or silo and conveys it with enclosed, sealed transfer that contains the dust.
- Enclosed transfer contains fine, air-borne ash dust
- Sealed bearings resist abrasion and alkaline attack
- Mobile units serve collection, stockpile and loadout
- Belt scrapers keep fine powder from building up
- Flexible fleet follows seasonal ash generation
Physical Properties and Handling Behaviour
The table below summarises the properties that decide belt specification, chute geometry and stacking method for this material. Values are typical ranges — actual figures vary with source and moisture content, so we test your sample before finalising a design.
| Property | Typical Value / Handling Impact |
|---|---|
| Bulk density | 0.6–1.0 t/m³ (very fine powder) |
| Particle size | Predominantly < 0.1 mm, flour-like |
| Abrasiveness | High on fine fraction; erodes seals |
| Angle of repose | Very steep; floods when aerated |
| Handling note | Fully enclose transfer; control aeration and dust |
Handling Challenges with Fly Ash — and How SANTO Solves Them
Fly ash is flour-fine and aerates into a flooding, dust-laden cloud that breaches permits and erodes seals. Alkaline character also attacks standard bearings.
SANTO low feeders and conveyors use fully enclosed transfer, sealed bearings and aggressive scrapers to contain and move ash cleanly. The mobile train links precipitator, silo and stockpile without fixed infrastructure.
- Fully enclose transfer to contain fine airborne dust
- Use sealed, abrasion-resistant bearings against alkalinity
- Avoid aeration that makes ash flood and flush
Recommended SANTO Equipment
For fly ash we most often supply the machines listed below. Each can be configured with the belt width, boom length and drive power your tonnage requires, and each is available on wheeled, tracked or crawler chassis.
- Low Feeder Track Stacker — configured for fly ash duty
- Feeder Track Stacker — configured for fly ash duty
- Wheeled Mobile Conveyor — configured for fly ash duty
- Mobile Truck Unloader — configured for fly ash duty
Typical Stockpiling and Loading Setups
A well-planned fly ash yard keeps receiving, stacking and reclaiming on separate paths so trucks never queue behind a loader. In the most common layout, a mobile conveyor receives from the tipper or hopper and feeds a radial telescopic stacker that builds a layered stockpile, while a second conveyor reclaims to the loading point.
- Receiving: hopper or direct truck discharge into a mobile conveyor
- Stacking: radial or telescopic stacking to build layered, drainable stockpiles
- Reclaim: front-end loader feeding a mobile conveyor, or direct reclaim conveyor
- Load-out: conveyor to truck, wagon, barge or vessel hold
Frequently Asked Questions
How is fly ash dust contained?
Fully enclosed transfer points, sealed bearings and belt scrapers keep the flour-fine ash from becoming an airborne cloud.
Why is aeration a problem?
Aerated ash floods and flushes uncontrollably; controlled, low-turbulence feed keeps it manageable.
Can mobile units serve ash reuse?
Yes. The fleet links collection, stockpile and cement/loadout duties, following seasonal generation.
Need the right machine for your site?
Send us your material, required capacity and site layout. SANTO engineers will size the equipment and return a configuration proposal within 12 hours — no obligation.