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Rely on OEM experts because not all parts are created equal. Spare and wear parts built to perform.
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1,6 – 168 m² filtration area
Up to 16 bars operating pressure
33, 40, 45 and 60mm chamber depth
Enhanced automation system
Get a filter designed for easy maintenance, superior performance, and consistent results under varying process conditions. Larox® PF filter pressure filters are fully automatic recessed-plate diaphragm filters with horizontally oriented chambers. The continuous filter cloth ensures thorough cloth washing and efficient cake discharge from each chamber at every cycle.
1. FILTRATION
The process slurry is pumped into all filter chambers simultaneously. The solids begin to form as the filtrate is displaced by more slurry entering the chamber. As the solids build, the pumping pressure increases, and filtrate is forced through the cloth until the required solids thickness is achieved.
2. DIAPHRAGM PRESSING I
High-pressure air or water automatically inflates the diaphragm located at the top of each chamber, reducing the chamber volume and squeezing the solids to remove more filtrate. The solids filtration process and tightly woven filter cloth produces exceptionally clear filtrate, while the high pressure maximizes filtration efficiency. Diaphragm pressing produces homogenous dewatered solids of uniform thickness with minimal excess liquid, assisting washing and air blowing.
3. SOLIDS WASHING
Larox® PF filter can wash dewatered solids in-situ to maximize solute removal or to recover the mother liquor with minimal dilution. The wash liquid is distributed evenly because the solids are homogenous and the filter plates lie horizontally. The wash liquid flows through the solids, displacing the mother liquid with minimal mixing.
4. DIAPHRAGM PRESSING II
The diaphragms are re-inflated, forcing the wash liquid uniformly through the solids. This produces a washing efficiency of over 95%, with consistent dry solids quality and minimum wash liquid consumption.
5. AIR BLOWING
Compressed air is blown through the solids for final dewatering. The moisture content is minimized and can be controlled precisely by adjusting the pressure and duration of the air blow.
6. SOLIDS DISCHARGE AND CLOTH WASHING
After the plate pack opens, the dewatered solids are conveyed out of each chamber on the moving filter cloth. The integrated wash unit sprays both sides of the cloth with high-pressure water, minimizing cloth blinding and ensuring consistent filtration results.