International technology group Andritz has received an order from the Swedish pulp and paper producer BillerudKorsnäs to deliver a LimeDry lime mud filter for the recausticizing plant at its Frövi/Rockhammar pulp mill in Örebro, Sweden. Start-up for the new LimeDry lime mud filter is scheduled for the second half of 2022.
The Andritz lime mud disc filter LimeDry represents the latest technology for lime mud dewatering and washing. It provides a large filtration capacity (540 tons lime mud/day) in a small filter footprint, even with a high lime mud capacity. The Andritz lime mud precoat filter consists of a disc filter and a continuous precoat renewal system (CPR).
The LimeDry mud filter is designed to achieve optimum dry solids with excellent washing efficiency for lime mud – minimizing TRS emissions in the lime kiln flue gases and ensuring efficient lime kiln operation with low heat consumption. It also has an excellent turndown capability – able to provide optimum lime mud quality, dryness, and alkali content at both high and low production rates.