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Hasler AOUSTIN - Vacuum Table Filter Systems
AOUSTIN tabletop filter is a continuous vacuum filtration system designed to meet the requirements of large-scale facilities producing phosphoric acid and other fertilisers, or metals such as iron and zinc or alumina (hydrometallurgy). This is the filtration solution that offers the lowest production cost per square meter. Productivity is maximised by this robust and reliable design, resulting in guaranteed high quality for final products and optimum recovery of mother liquors, without dilution. With a filtration area of up to 320 m² (3,444 ft²), it has a high filtration capacity.
Thanks to its streamlined design and extremely demanding manufacturing standards, the AOUSTIN® table filter is as reliable as it is rugged. AOUSTIN® vacuum table filters are engineered and constructed to meet our uptime guarantee. Engineered with few moving parts, the filters boast a high rotation speed and a short filtration cycle resulting in a high quality finished product, maximised throughput and no product dilution. HASLER Group has specialised expertise in the fabrication of large-scale precision equipment. This expertise can be seen with the tight tolerances in which we achieve table flatness (+ / - 3 mm), even for table diameters up to 21 meters (69 feet). These tight tolerances enable the table filter to deliver unparalleled performance and lasting durability.
- Fewer moving parts than tilting pan designs
- Corrosion resistant stainless steel for any parts in contact with phosphoric acid
- Available for wet or dry cake discharge
- AOUSTIN® table filters eliminate dilution resulting in a high quality finished product
- Average operating life of 30 + years
- Reduces clean water requirements with a cloth washwater recovery system
- Reduced facilities costs with a low overall height
- Available in a wide range of sizes from 9 m² to 320 m² (96.8 ft² to 3,444 ft²)
- 316L, 317L, or 904L stainless steel
- 304L stainless steel screw with replaceable wear flights of special alloys
- Cleaning by two spray banks operating from a central manifold
- Outer perimeter: endless rubber belt in close contact with table edge, directed away from table at takeout zone for complete materials removal.
- Inner perimeter: integral rubber hub seal.
- Wide range of available materials and construction
- Efficient distribution network ensures consistent, reliable vacuum performance for maximum liquid extraction.
Exceptional performance
High cake washing efficiency, optimised quantity of washing liquid, good slurry distribution to keep cake thickness constant and uniform. This filter provides a high-quality output, optimal efficiency and preservation of product integrity due to the specific design of the vacuum box.
Water savings
Reduced clean water requirements due to an optimised filter cloth washing system arm ramp, and recovery of filter cloth washing water, then used to wash the cake.
Cost control
Reduced costs for operation & maintenance due to low number of wear parts.
High flexibility
Flexibility in positioning of slurry feeder, cake washing chutes distributors, and barriers dams, due to supporting carriage and rotary joint of piping for optimal adjustment to suit your specific process and cycle timing.
Chemical and mechanical resistance
This filtration equipment is designed in stainless steel, offering corrosion-resistance for all parts in contact with the product (e.g. phosphoric acid).It is also designed to be robust and to withstand mechanical stresses. This industrial filter gains strength from having a spine-like mechanically-welded structure as its central column. This steel load-bearing structure can withstand harsh environmental conditions, with resistance to vibration, impacts and high mechanical loads.
A table made of highly corrosion-resistant materials, such as stainless steel, makes it suitable for use in environments in which aggressive chemicals are present, e.g. in the chemical industry.
LIFE CYCLE
Thanks to its robust design and resistance to mechanical and chemical stresses, the AOUSTIN filter has an average service life of 30 years.
A flat filter table
the filter table is fitted with a floating system for optimum adjustment to ensure that the filter is on a perfectly level surface. This means that the pulp slurry can be distributed evenly, with constant cake thickness, which improves filtration performance.
Optimal washing
This item is equipped with distributors designed for optimum distribution of the washing liquid. It also has several washing distributors and a dam for each distributor. It also has an movable dam, which allows a sectorial "pool" to be created.
Optimum filtration
The air flow rate required to achieve the desired humidity is independent of pressure drop across the cake.
Fluid and uniform rotation
Thanks to the circular drive ring on rollers, combined with use of a control unit with frequency inverter and suitable gear motor
Flexibility in adjustment
Discharge available for dry or wet cakes. Flexibility of positioning and adjustment of distributors and barriers by use of supporting carriages and a rotary joint on the feed pipe, providing an optimum process.
Large range of sizes
Available from 9 m² to 320 m² (96.8 sq. ft. to 3,444 sq. ft.)