Malaysia: Triple lift vertical sludge system


SPIRAC's first three stage vertical lift installation has been successfully commissioned in Malaysia.  This system handles dewatered BFP sludge in a pulp and forest products processing plant.

The Bilt Sabah Forest Industries Paper Mill is located in Malaysia (Sipitang, Sabah). The new SPIRAC sludge handling system conveys 11.7m³/hr of dewatered sludge from a bin at ground level to a storage bin approximately 30m above ground.

System Description

Dewatered sludge from a belt press is fed with loaders intermittently and uncontrolled into a 20m³ bin at ground level. From this bin the sludge is extracted with a quad screw live bottom (LB) and 3 vertical OK-type conveyors as well as intermediate horizontal cross conveyors to a 5m³ storage bin approximately 30m above ground. Another quad screw LB transfers sludge from this storage bin to the screw feeder.

  • Volumetric flow rate: 11.7m³/hr
  • Sludge DS: 25 – 30%
  • Sludge bulk density: 1000kg/m³ (approx.)
  • Fibre / Ash content: 20-40% OD / 25-60% OD