Andritz to provide LimeDry lime mud filter for Swedish mill

Swedish pulp and paper producer BillerudKorsnäs has selected Andritz to deliver a LimeDry lime mud filter for the recausticizing plant at its Frövi/Rockhammar pulp mill in Örebro, Sweden.

The LimeDry lime mud disc filter from Andritz.
The LimeDry lime mud disc filter from Andritz. - Image © Andritz.

The LimeDry lime mud disc filter provides a large filtration capacity (540 tons lime mud/day) in a small filter footprint, even with a high lime mud capacity. The lime mud precoat filter consists of a disc filter and a continuous precoat renewal system (CPR).

The new LimeDry mud filter is designed to achieve optimum dry solids with excellent washing efficiency for lime mud, minimising TRS emissions in the lime kiln flue gases and ensuring efficient lime kiln operation with low heat consumption. It is also able to provide optimum lime mud quality, dryness, and alkali content at both high and low production rates.

Start-up for the new Andritz LimeDry lime mud filter is scheduled for the second half of 2022.