Blast Rooms

Waffle-Floor Blast Rooms

Walk-in blast rooms can accommodate big and extra-big components.

The waffle-floor system requires no mechanical recovery systems such as screw conveyors, bucket elevators etc. which are subject to high wear. Extraction of the dust-loaden air and transport of the blast media is done with the same air stream. A reclaimer cyclone separates reusable blast media from dust and debris.

Blast room with pneumatic recovery by waffle floor

In contrast to conventional solutions waffle blast rooms do not require foundations and are therefore optimally suited for subsequent installation in existing or relocation to new facilities.


Open blasting in waffle-floor blast room

Excellent visibility by vertical downdraught

Close-up of the waffle-floor

Using the air flow from the dust collector the spent abrasive is collected in the waffle floor having a thickness of 220 to 260 mm only, and picked up from there. The whole base area serves for recovering; air inlet baffles are distributed over the room ceiling.

Waffle-floor blast room 4 x 4 x 3 m

Due to the vertical downdraught ventilation produced inside the enclosure the dust is immediately trapped. This principle guarantees excellent visibility which is unknown with conventional systems and greatly increases productivity.

Which kind of blast media?

With blast rooms all kinds of recyclable blast media can be used such as aluminium oxide, glass beads, ceramic beads, steel grit, plastic media etc. One-way abrasives such as slags are not suitable.

Blast media

Blast media staying clean

The blast media is cleaned from the dust in two separating stations. This highly efficient reclaiming system keeps production costs low and ensures excellent operator visibility.

Waffle-floor blast room 8 x 4 x 3,5 m

Flexible solutions at your choice

Particularly flexible solutions can be realized in combination with Problast® Powerpacks. A row or several rows of hoppers (multihopper) is either flush mounted or mounted on one side of the room together with a small ramp and connected with the Powerpack by a vacuum hose.

At the end of the blasting operation the abrasive/dust mixture remaining on the floor is swept into this row of hoppers from where it passes to a reclaimer cyclone for separation from dust and debris before it is finally deposite

Problast Powerpack with multihopper