HQ-Press bark press


Maximizing the energy benefit of bark

The challenge

How to remove moisture from bark in an economical and reliable way?

The ANDRITZ HQ-Press delivers bark with approximately 5%-units higher dry solids content than any competitive unit. This can increase the net green energy value of the bark up to 15%.

Unlike competitive units which have enclosed structures, the HQ-Press has an open, simple design. The components are easily accessible for maintenance. As a side benefit, the open design helps with housekeeping activities.

HQ-Press bark press installed and in action in a mill

HQ-Press is a robust, reliable solution for bark handling in any woodyard or biomass handling operation.


up to 5%-units

higher dry solids content 

up to 15%

higher green energy value

up to 120 m³/h

loose capacity 

The design of the HQ-Press features a self-orienting drum with two-phase pressing to achieve the higher dryness. While conventional presses typically achieve an annual average of 40% dry solids, the HQ-Press is able to deliver an annual average of 45% dry solids in normal operation.  Advanced controls on the unit maximize the output under a variety of operating conditions.

3d rendering of the HQ-Press


HQ-Press operation principle



  • Net green energy value can be increased up to 15%
  • High capacity
  • Remote connectivity for IoT applications
  • Flexible layouts for infeed and outfeed
  • High uptime and availability
  • Significantly longer life of the screen drum than in existing solutions

Find out more ...

  • HQ-Press PDF : 396 KB