New Stock Prep System Cuts Energy Use at Schönfelder Papierfabrik

Schönfelder Papierfabrik, Annaberg-Buchholz, Germany, has been running its new Voith stock preparation system for several months now, and is reportedly attaining high energy efficiency. The new system is equipped with Voith LowEnergyFlotation (LEF), the latest generation of deinking flotation for removing ink and hydrophobic contaminants from recovered paper. The LEF, Voith notes, is easy to operate, requires low-maintenance, and is self-cleaning. The energy requirement is low at 10 to 15 kWh/day. The LEF thus offers the mill energy savings of up to 50% compared with the model it previously used.

Schönfelder Papierfabrik decided in favor of the new InfiltraDiscfilter in the BlueLine product line, along with other products. It guarantees that the pulp suspension is dewatered reliably and in an almost maintenance-free way. The core of the InfiltraDiscfilter is its bag-free BaglessPlus disc. This disc filter has an especially high capacity, since the filter surface is increased due to the corrugated surface. In addition, Schönfelder Papierfabrik chose a new dispersion system from Voith.

Holger Hampel, manager of Schönfelder Papierfabrik, emphasizes the success of this project: "On the basis of the very good quality and performance data achieved from the very beginning, we were able to approve the system without warranty runs. The result simply convinced us."

Schönfelder Papierfabrik produces more than 50,000 metric tpy of graphic paper and specialty paper on a working width of 3,300 mm in a basis weight range of 45 to 120 gsm. The product line includes various paper grades such as offset, office, volume, envelope, and improved newsprint as well as wallpaper base and liner paper.

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