Vacuum filtration equipment

Wide range of vacuum filters with know-how in efficiency and reliability

Hasler Group manufactures an innovative range of continuous vacuum filtration equipment. Regardless of sludge characteristics and flowrate, with high level of certainty, Ū-Tec will be able to select an efficient and reliable industrial solution for vacuum liquid-solid separation. Hydrometallurgy, phosphoric acid production, and FGD are areas where Hasler vacuum filters have a long and successful track record.

Feedback from operation in demanding conditions has accumulated in know-how which allows Hasler vacuum filters to achieve:

high washing efficiency,
maximum recovery of 99,9%
high reliability (availability up to 98%)
ease of maintenance

Hasler vacuum filters allow you to:

MAXIMISE DRYING of the cake to eliminate the need for ovens
OPTIMIZE the recovery of the liquid
OBTAIN MAXIMUM CONCENTRATION of the filtrate. Ex: 28% for phosphoric acid
REMOVE an element from the cake, e.g. salts / chlorides
IMPROVE ENERGY EFFICIENCY: consume less water and electricity
FILTER on time and on budget
ENSURE THE SAFETY of operators and installations. e.g. CE-standard protective grids
REDUCE OPERATING COSTS and the risk of shutdowns
DEVELOP NEW filtering PRACTICES for new products

Wide range of materials is available to withstand abrasion and corrosion (stainless steel 316, 904L, duplex, super duplex steel, FRP, HDPE and other non-metallic materials).

In order to achieve the best process results, process and mechanical audits are available as a service. Dewatering and filtration efficiency can be tested in a lab or on site. Testing allows to develop optimal filter and washing system (co-current or counter-current) configuration and issue a process guaranty.

Typical applications for our horizontal vacuum belt filters:

lithium battery black mass filtration
wet process phosphoric acid filtration
fertilizers
gold and silver refining, cyanide recovery
acid leaching of copper, nickel, zinc, cobalt
spodumene dewatering
lithium brine
rare earth elements
gypsum dewatering
tailings dewatering
fly ash
alumina

Ū-Tec is the official Hasler vacuum filtration equipment agent in the Baltic, Nordic countries and Central Asia.

PHILIPPE horizontal vacuum belt filters

Filtres Philippe® horizontal belt filters provide an ideal solution for your mineral or bulk chemical processing applications. New technologies and years of expertise guarantee 98% uptime to ensure you meet your processing goals.

In a filter cloth and rubber belt system, the belt is not only a key operating component, but is also a significant portion of the cost of the system. With this in mind, HASLER Group manufactures and tests the belts in dedicated facilities. Each belt is run on a proprietary robotic machine to remove residual stresses, true edges, cut grooves and bore drain holes. Our belts feature patented chemically bonded belt curbs, and are factory spliced and hot vulcanized to ensure a long operating life.

Product specifications

Frame materials

Standard: Painted carbon steel
Optional: 316, 316L, 304L stainless steel.

Vacuum belt construction

Standard : SBR (HT ot LT), hot vulcanized with cold bonded curbs (Natural rubber)
Option : belt : EPDM or Butyl rubber, curbs : EPDM

Filter cloth media

Materials: monofilament, multifilament, and felt
Weave style: plain, twilled, or satin
Wide range of mesh sizes, porosities and brea-king strengths available

Operating parameters

Temperature: up to 230° F (110° C)
Vacuum: -100mm Hg up to -650mm Hg
Belt speed: 3.28 ft./minute (1m/minute) to 164 ft./minute (50m/minute)
Cake thickness: .12 in. (3 mm) to 4.72 in. (120 mm) • Final moisture content: as low as 4%
Minimum Temp : -5°C
Minimum environment Temp : +5°C

Standard features

Factory-vulcanized endless belt with patented belt curbs that flex and follow pulleys closely
Structural steel frame with no welded parts
Easily accessible pneumatic tilting vacuum box
Belt support system featuring water-lubricated endless wear belts and replaceable HDPE slide rails
Rubberized pulleys with one-piece steel shaft
Rigid filtrate/gas pipes
Fully automatic cloth tracking system
Pneumatically driven cloth tension system with no counterweights
Drip-proof discs to protect pulley and roller bearings

Optional features

Choice of single or multiple discrete wash-dry zones
Wide range of feeder styles available to suit yourslurry and process
Washing boxes and mobile dams to meet your application needs
Available high-pressure and acid washing of filter cloth
Dry or wet cake discharge

AOUSTIN vacuum pan / table filters

AOUSTIN® table filter systems are designed to meet the needs of large-scale phosphoric acid facilities. Although originally engineered for the use of phosphoric acid, this equipment may also be installed for other applications such as tar sands and alumina.

With a large filtration area of up to 320 m² (3,444 ft²), the AOUSTIN® table filter delivers maximum productivity with its simple and reliable operating design. AOUSTIN® table filters are also designed in such a way that they are proven to deliver a lower cost per square foot / meter than any other method

Key features

Available in a wide range of sizes from lab-scale units of 0.25 m2 (2.69 ft2) to large production systems of 200 m2 (2,152 ft2)
Multiple washing and drying zones
Rubber-lined tail and head pulleys with a single steel shaft to ensure corrosion resistance and stiffness that eliminates torsion effects
Innovative belt support system with water-lubricated endless wear belts and replaceable slides to reduce friction and ensure that the belt remains flat and in contact with the vacuum box
Cloth tensioning and guiding system features easy adjustment for optimum running efficiency and long cloth life.
Optimised cloth and belt cleaning to reduce water consumption and extend operating life
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)

Table materials

316L, 317L, or 904L stainless steel

Cake extraction

304L stainless steel screw with replaceable wear flights of special alloys

Cloth Washing

Cleaning by two spray banks operating from a central manifold

Material cake retention

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.

Filter cloth media

Wide range of available materials and construction

Central vacuum box

Efficient distribution network ensures consistent, reliable vacuum performance for maximum liquid extraction.

VERNAY vacuum drum filters

Ideal if your application requires a low capital investment, minimal floor space, or hooded installation, Filtres Vernay® systems have a simple design with few moving parts, ensuring a long operating life and maximum operating time.

Filtres Vernay® offers choice and flexibility to meet your specific processing demands. Choose discharge styles, drum cells, construction materials and the design of your system.

Since the vacuum drum filter was introduced by Filtres Vernay® in the 1930’s, Hasler Group continues to add new features to make these products more and more reliable and efficient.

Advantages

Great corrosion resistance due to non-metallic components
Minimal floor space required
Hooded design available
Low CapEx

Key features

Available in a wide range of sizes — from 0.1 m2 to 120 m2 (1.07 ft2 to 1,292 ft2).
Choice of frame tank – integral or supported by an independent carbon steel frame
Innovative agitator rake design ensures solids remain in suspension and avoids sediment in the system tank for better materials distribution
Wide range of choices for drum material to suit process demand – polypropylene, carbon steel (unlined or rubber-lined), stainless steel, as well as other materials
Internal suction pipes are flow-optimized to ensure efficient performance
Choice of four discharge styles to meet the needs of a wide range of slurry – scraper, belt/strings, roll, or an automatic micrometric scraper
Available for standard pulp of 10% w/w to 0.01% w/w for precoat systems

Product specifications

Table materials

316L, 317L, or 904L stainless steel

Cake extraction

304L stainless steel screw with replaceable wear flights of special alloys

Cloth Washing

Cleaning by two spray banks operating from a central manifold

Material cake retention

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.

Filter cloth media

Wide range of available materials and construction

Central vacuum box

Efficient distribution network ensures consistent, reliable vacuum performance for maximum liquid extraction.