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Metso Starts up First AshLeach Duo for Efficient Removal of Chlorine, Potassium

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Metso, Finland, reports that it has started up the first AshLeach Duo at a pulp mill in South America. The AshLeach Duo provides efficient removal of non process elements without the need for steam or sulfuric acid. The new system maintains all operational flexibility advantages of the AshLeach technology, which was originally developed by Metso and is known for its reliability in operation in multiple references around the world.

The new AshLeach Duo system features a two-stage centrifuge system for removal of chlorine and potassium from recovery boiler ash, designed to minimize sodium losses and to avoid acid usage at high carbonate levels in the ash.


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