b'thePrimeScreen Xhelps to reduce theRESULTS FROM THE FIRST INSTALLATIONthickeningAfter extensive internal testing in factors andANDRITZs stock preparation pilot leads toplant, the first commercial installation better controlof a PrimeScreen X50 was as a primary of fiber losscoarse screen in a 1,350 bdmt/d OCC as well asline.reduced potential forThe main targets of the installation plugging.were defined as follows:Improve qualityMinimize energy consumptionAchieve longer screen basket lifetimeThe PrimeScreen X50 was installed in parallel to an existing conventional screen from another supplier and began operating at full production from the start, using the same rotor tip speed, flows and consistency settings that were in place for the existing screen. The rated capacity of the X50 was 705 bdmt/d. First samples from the PrimeScreen X compared to the competitors unit are shown in Table 1.Figure 2. PrimeRotor - new rotor and foil design. Flow Consistency Massl/min % t/dInlet 15,073 3.25 705.4 The competitors screen that was replaced had 250 kW installed PrimeScreen X Accept 14,059 3.11 629.6 power and operated at ~69% load Reject 1,515 4.50 98.2 (Table 2). The PrimeScreenX had Inlet 15,962 3.20 735.5 132 kW installed power and operated Competitor Accept 14,346 2.88 595.0 at ~78% load. This reduced energy Reject 1,615 4.70 109.3 consumption by 40% (from 173 to Table 1. First samples from the PrimeScreen X compared to a competitors103 kW) compared to the existing screen (screens running in parallel).competitors screenTISSUE TECHNOLOGY INTERNATIONAL19'