Bottom Ash
Boiler Ash · Furnace Ash · Coal Ash · Incinerator Bottom Ash
Bottom ash is the coarse, granular material that remains after the combustion of coal or waste in boilers and incinerators. It consists of hard, abrasive particles such as sand, glass, and metal oxides. The material is dense, angular, and often wet when collected, which can lead to handling challenges such as buildup and abrasion. KWS designs heavy-duty conveying systems with abrasion-resistant materials to ensure reliable, low-maintenance handling of bottom ash in power and waste facilities.
Overview
Chemical Formula
Common Names
Common Forms
Applications
- Cement and concrete production
- Road base and construction aggregate
- Landfill cover and embankment fill
- Metals recovery and waste processing
Material Characteristics
| Property | Value / Description |
|---|---|
| Common Forms | Granular, Coarse Ash, Slag Particles |
| Bulk Density | 70–100 lb/ft³ (varies with composition and moisture) |
| Flow Behavior | Free-flowing when dry; sticky and cohesive when wet |
| Abrasiveness | Very High causes significant wear on metal surfaces |
| Corrosiveness | Moderate may contain chlorides, sulfates, or acids |
| Dust Potential | Moderate dry ash can create airborne dust and visibility hazards |
Handling Challenges
- Severe abrasion and equipment wear from coarse, angular particles
- Material buildup and sticking in wet handling systems
- Corrosion from chemical residues and moisture exposure
- Plugging and bridging in hoppers and discharge points
- Dust and safety hazards during dry conveying and transfer
Summary
Bottom ash requires conveying and storage systems designed for dense, abrasive, and moisture-variable materials. KWS Manufacturing provides engineered solutions—including drag conveyors, screw conveyors, and submerged ash conveyors—constructed from wear- and corrosion-resistant materials for long-lasting performance.
With extensive experience handling coal combustion and waste-to-energy byproducts, KWS ensures efficient, durable, and safe operation for bottom ash handling systems.
