BRUCE LAMELLA – provides the ‘Clearer Solution to Washing’

Bruce launch new version of their ‘Lamella – Fines settlement system’

This is the next step in the washing process and compliments the successful BRUCE -WASHPOD (Scrubbing, Rinsing, Sizing & Sand Production) system with its mobility, minimum setup times and simple site installation.

The Lamella Clarifier / Fines settlement system can be used in a range of industries including Primary & Secondary Sand & Aggregate Washing, C & D Waste Recycling, Sweeper or Gully Waste Recycling, Glass Recycling or Reclaimed Aggregate facilities.

The Bruce Lamella offers substantial reduction in floor space / footprint in comparison to conventional Clarifier / Thickener tanks and with this in mind the current Lamella system with rectangular design has a similar footprint to a 40ft shipping container. It is capable of providing Sludge treatment in a normal 60 – 100 TPH washing application.

The modular design of the unit enables it to be easily transported from site to site on a standard 45ft flat trailer without any oversize transport requirements. The Lamella can be supplied on Jack Legs so it can be demountable without any expensive crane or lifting equipment on site.
The Lamella system comes assembled & prewired ex factory for minimum site setup time and units currently in use have demonstrated that little site preparation is required. So with its compact size & footprint the system does not require any complicated concrete base or groundwork’s.

The Lamella offers probably one of the most efficient compact thickening & clarification solutions with many advantages such as reduced water usage, shorter cycle times, retention of fines and entrapment of suspended solids in Slurry Wash water.

The process is simple where the incoming slurry from cyclone overflow enters the unique anti-turbulence system at the rear of the Lamella Tank thus enabling the settlement process to begin immediately and the incoming slurry is unobtrusively dispersed evenly into the main tank chamber.

The suspended sediment then enters the main body (approx 50M3) of the tank where a series of uniquely designed rows of Lamella plates entrap the suspended solids. These plates have a special inclination angle optimised through years of development which allows the solids to settle efficiently by gravity to the bottom of the tank. The plates are built into a series of cassettes which can be easily removed for maintenance & cleaning. Once the solids settle downwards to the bottom of the tank they are conveyed by two variable slow speed screw conveyors running full length along the base of the tank to an exit flume at the rear. In the usual BRUCE manner these screws are manufactured from HARDOX Wear resistant steel giving longer lifespan. These screws being the only moving parts in the system provides operators with ultimate reliability and low maintenance. The clarified water is displaced in the opposite direction upwards into weirs along the side of the tank into the exit chamber prior to its return to the Water Ballast tank.

With the simplicity of design and operation the Lamella clarifier is primarily designed to operate without chemical flocculants however the performance can be further improved by the addition of flocculants on suitable applications.

The model shown in the illustration has clarified water feeding from the Lamella system weir via an inclined Sieve system, (‘Fine particle interceptor’ for floating organics, polystyrene, plastics etc) with the clarified water flow going back to the Clean Water Ballast Storage tank. This Clarified water is then reused to wash material in the Wash-plant and then begins its cycle again.

The illustration shown has an inclined screw conveyor for removal of sludge from the rear of the Lamella for stocking or further treatment.

The lamella is designed to operate in conjunction with the BRUCE Wash-Pod or BWR300 Washing System which have an average throughput of 60- 100 TPH although with its versatile design this can be adapted to operate with other existing wash plants or many other silt recovery operations.

The BRUCE Lamella System can also be supplied with:

  • Sieve (Fine particle interceptor)
  • Clean water Ballast Tank
  • Walkways, access steps etc 
  • Inclined Sludge extraction screw 
  • Chassis 
  • Jack legs (demountable option)
  • Flocculent Dosing plant 
  • Clean water Pump
  • Slurry Pump 
  • Skelly Trailer 
  • Centrifuge or Press system

Associated Businesses

  • Cookstown, BT80 8UH