Filter systems improve the working environment

Filter systems improve the working environment at ULDALL

We installed a new heat recovery system in the production at the ULDALL iron foundry in Vejen in 2023. The new system will benefit both the environment and employees. In addition to recovering heat from ULDALL’s casting processes, it also has filters that significantly improve the air quality.

HThe heat is recovered from the mould boxes and from what the foundry industry calls a ‘shake-out’. Shake-out is a mechanical process where the sand from the moulds is recycled by vigorously shaking the sand moulds, so that the sand becomes loose again. This allows ULDALL to recycle 95 per cent of the sand. The new system also ensures that the heat from the moulds is recovered, filtered and reused in ULDALL’s production hall. The system, especially the new filters, were installed at the request of ULDALL’s employees, who wanted better air quality in the area.

- “We want to create the best conditions for our employees, and since the new recovery systems also allowed us to reduce energy consumption in the area, it was an easy decision to take. We can see from our employees’ reactions and our district heating and electricity bills that it has been the right decision,” says Dion Brun, CCO at ULDALL.