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Replacing 704 Dust Collection Filters in 3 Days at an Asphalt Plant

09-04-2026  |  Dust filtration


Text: Harrie Hoitink (Bulkgids) | Photos: Vlint


At the beginning of this year, dust collection specialist Vlint completed an extraordinary project at an asphalt plant in Wallonia: the replacement of no fewer than 704 dust collection filters. Within just three days, the plant was back in operation and its electricity consumption had dropped significantly. Rinus Kortekaas, Operations Manager at Vlint, explains the project step by step through seven photos.

Replacing Dust Collection Filters Without Extended Downtime


“We came across this project quite by chance. Our Belgian field service representative was working on a project near Charleroi when his trained eye noticed this asphalt plant. The dust collector was visibly emitting a little too much dark dust. He walked into the company unannounced and discovered he had arrived at exactly the right moment. They were just planning to replace their large dust filtration system.”


“Normally, the company’s own employees would replace the filters. However, that would mean four to five days of downtime and six employees dedicated to the task. We were told that if Vlint could complete the work faster and keep downtime to a minimum, we could take on the project. We didn’t need to be asked twice!”

704 Filters Replaced at an Asphalt Plant


“The filtration system consists of no fewer than 704 bag filters. Gases from the drying drums—containing large amounts of dust, soot and water vapour—are passed through them. Regular compressed-air pulses then clean the filter bags by removing the dust, which is collected at the bottom of the filter housing and transported to the silo via a screw conveyor. In this photo, you can see our team removing the old filters. After removing the covers from the installation, they take the support cages out of the filter bags and remove the filters.”


“The filters and cages have been removed. Before installing the new filter bags, we thoroughly clean the entire system. The new filters installed here are longer than the old ones. This increases filtration capacity and provides a better seal. Think of it like a pair of jeans with a waistline that’s too low—bend over and there’s a gap you’d rather not see…”

Safe and Precise Work in Challenging Conditions


“The new dust collection filters were installed within three days. Installation is precision work. It is essential that the filter bags fit perfectly into the filter housing; gaps or leaks are absolutely unacceptable. Especially in an asphalt plant, you want to prevent contaminants from being released into the atmosphere.”


“The result of a full day of replacing filters. Looking at how dirty the coveralls are, it’s easy to see why dust masks and face protection are essential. Alongside craftsmanship, safe working practices are one of our highest priorities.”

The Result: Lower Costs and Greater Operational Reliability


“Filter number 704 has been installed—we’re done! The team that completed this project is extremely satisfied with the result and very pleased with the excellent cooperation from the customer. They organised everything perfectly, allowing us to work at full speed from day one. The customer is equally satisfied. Downtime was kept to a minimum, they can expect three to four years without filter-related issues, and they have seen a substantial reduction in energy consumption from day one.”

Published in BULK Gids

This project was featured in the Dutch trade magazine BULK Gids (Edition 2 – 2026), the professional publication for experts in the bulk handling and process industries. In this article, our Operations Manager takes you through the work carried out at the asphalt plant step by step.

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Form – Looking to Replace Your Dust Collection Filters?

Whether it concerns planned maintenance or an urgent replacement, properly functioning dust collection filters are essential for a safe and efficient installation. Looking to minimise downtime, reduce energy consumption and ensure the right filtration solution for your process? Complete the form or contact us.