Artisan filter

The American version of the dynamic filter, known as the Artisan continuous filter (Fig. 30), uses such nonfiltering rotors in the form of turbine-type elements. The cylindrical vessel is divided into a series of disk-type compartments, each housing one rotor, and the stationary surfaces are covered with filter cloth. The feed is pumped in at one end of the vessel, forced to pass through the compartments in series, and discharged as a thick paste at the other end. At low rotor speeds the cake thickness is controlled by the clearance between the scraper and the filter medium on the stationary plate, while at higher speeds part of the cake is swept away and only a thin layer remains and acts as the actual medium. 

The Artisan continuous filter operates at pressures from 150 to 200 kPa, it allows washing by iajection of washflquid after the initial filtering stages, and the sizes available range from 0.3 to 19 m. Abrasive wear on the cloth is claimed to be eliminated by the thin protective layer of cake on the medium. 

Figure 1.52 The general form of a high shear crossflow, Artisan type, filter (fop) and photograph courtesy of Bokela (bottom).

The American version of the dynamic filter, known as the Artisan continuous filter Figure 11.7), uses turbine-type elements as rotors and... 

Figure 11.7 Artisan continuous filter (Courtesy of Artisan Industries Inc.)...

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