UPM Screen Basket Retrofit Boosts Stickies Removal Efficiency

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UPM's Chapelle Darblay mill in Grand Couronne, France, has successfully retrofitted and started up a Voith Paper C-bar C screen basket in an existing Kadant-Lamort SPN 15 screening machine. Successful retrofit of the C-bar C centripetal screen basket allowed the permanent shutdown of a screening machine.

The extra screening capacity allowed the permanent shutdown of one of the two parallel SPN 15 screens (a saving of approximately 560 MWh/yr, or more than EUR 30,000/yr). The manufacturing concept, with more open area and an optimum profile performance, resulted in a higher screening capacity. Therefore, the installation of the C-bar C led to an 11% improvement in stickies removal efficiency (from 74% to 85%).