LMPF Pressure Filter Floor mounted version
High performance Pressure filter made for floor mounted operation
The Laboratory Pressure Filtration Unit Floor mounted version (FM) has a proven design which achieves rapid filtration, enabling difficult separations that would otherwise be extremely slow. The Pressure Filters are available in a standard range of sizes: 4, 13, 24, and 41. Combinations of construction materials are available including Stainless Steel 306 & 316 and Mild Steel, with the barrels in natural finish or with either Rubber or Polyurethane lining. The floor mounted Pressure Filter features fixed barrels with screw down/up, lid and base. The lid is also pivoted allowing it to be rotated away from the barrel. Each unit features a pressure gauge and ball valves to control the operations of pressurising, purging and bleeding.
Features and Benefits
- A minimum floor space is required
- Minimised risk of environmental hazard from toxic, flammable or volatile cakes
- For the easy handling of saturated brines
- Reslurry washing / cake washing
- Sharp separation
- Suitable for filter cakes which tend to crack
- Easily recovering of the filter cake
- A full range of filter cloth with various permeability is available
Technical Specifications
| Applications | filtering chemicals, pigments, and pharmaceuticals |
| Working principle | dewatering concentrates and removing moisture with high pressure |
| Max air pressure to the filter | 500 kPa |
| Barrel coating | manganese steel, tungsten carbide, hardened steel, PFA, heavy metal free steel and stainless steel (others on request) |
| Barrel available volume | 4, 13, 24, 41 Litres |
| Standard | CE |
| Weight | 180kg |
| Dimensions (width x length x height) | 800 x 600 x 1800 mm |
Pressure filter working principle
The floor-mounted pressure filter is built for heavier-duty lab filtration and larger handling loads. Pressure-driven filtration is performed in a sealed vessel: compressed air (or gas) above the slurry forces liquid through a filter cloth, forming a cake inside the barrel. The floor-mounted frame keeps the barrel fixed and uses a screw-down / screw-up mechanism plus a pivoting lid to support safe operation, repeatability, and easier access for cleaning and cake removal—especially on larger barrel configurations.
How it works
The filter cloth is placed and the barrel is filled with slurry, after which the lid is closed using the screw-down mechanism. Compressed air is then applied above the slurry, driving liquid through the filter medium and producing filtrate at the outlet while the solids build a cake in the barrel. The operator maintains pressure to reach the desired endpoint, such as improved cake dryness or a target filtrate volume. When filtration is complete, pressure is released through the bleed/purge valves until the unit is fully depressurised. The lid can then be pivoted open to provide clear access for cake removal and cleaning, readying the filter for the next cycle.
Pressure Filter Floor Mounted FAQ (Frequently Asked Questions)
Applications
- After flotation or other beneficiation processes, pressure filters are used to dewater the mineral concentrate, producing a dry cake that can be easily transported or processed.
- Pressure filters are ideal for dewatering tailings, reducing the volume and water content of waste materials, and making disposal safer and more cost-effective.
- In hydrometallurgical processes like heap leaching, pressure filters are used to separate the metal-rich leachate from the solid ore residue, enabling efficient metal recovery.
- In processes where the liquid phase needs to be reused or treated, pressure filters provide clear, high-quality filtrate, improving process efficiency.