Outotec Adds Two Models to PF Filter Line

Outotec’s new PF 12 and PF 15 automatic pressure filters (right) employ a single, serpentined filter cloth to reliably discharge
solid cake (above) from the unit's chambers on each filtration cycle.
Outotec has introduced the third genera-tion of filtration equipment in its PF filtra-tion lineup—the PF 12 and 15 series automatic pressure filters—which com-plete the product line and follow the previ-ous launch of the world's largest pressure filter, the PF 180.

Outotec Larox PF filters are recessed plate membrane filters in which the chambers lie horizontally. The filter plates are stacked vertically to give a total filtration area between 1.6 and 252 m2 (2–300 yd 2), depending on the model size. Filter capacity can be expanded by adding plates. The PF 12 and 15 series offer filtration areas ranging from 9.45 to 31.5 m 2 (11– 37 yd2), and 15 to 50 m 2(18–60 yd 2 ), respectively.

Outotec said the PF line employs a sin-gle filter cloth that serpentines between the filter plates and reliably transports the cakes out of the chamber in every cycle; this eliminates any requirement for manu-al assistance. The PF filters operate auto-matically, configured either with a stand-alone panel and integrated PLC or through a distributed control system. The units’ automation capability extends beyond simple filter sequencing to process control to achieve consistent results under varying process conditions.

A wide variety of Outotec filter cloth types are available for different applica-tions. During each cycle, the filter cloth passes through high-pressure water sprays designed to wash surface or embedded solids off the cloth, maintain-ing cloth permeability, ensuring consis-tent filter performance with every cham-ber having equal cloth resistance, and extending cloth life. The single cloth sys-tem, said Outotec, simplifies logistics, maintenance and allows complete cloth inspection without a shutdown.

As featured in Womp 2013 Vol 04 - www.womp-int.com