Bark Ash and Boiler Ash

Bark ash and boiler ash are waste products from burning wood waste and black liquor in mill boilers. The resulting ash slurry — a mix of fine solids, water, and chemicals — must be collected, transported, or dewatered to maintain boiler efficiency and meet environmental compliance.

Challenges:
Ash slurries are highly abrasive and sometimes caustic, quickly wearing out impellers, casings, and liners. Solids tend to settle in sumps and piping, causing frequent clogs and requiring manual cleaning. Standard dewatering and transfer pumps often fail prematurely under these abrasive conditions.

Solution:
Hevvy/Toyo submersible slurry pumps are built to handle abrasive ash slurries with minimal wear. Their high-chrome construction, heavy-duty bearings, and agitator systems keep solids suspended and prevent buildup. These pumps deliver superior reliability, reduced downtime, and longer component life in ash handling applications across pulp and paper facilities.