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Closed-circuit blasting machine
Munk - Schmitz

These units feature a unique closed-circuit system, i.e. immediately after the blast media has been thrown onto the workpiece it is recovered and recycled. This ensures a consistent quality of the abrasive and minimises consumption.

You are free to blast anywhere in open or closed environments, without interfering with other activities nearby - with no pollution.

Closed-circuit machines have been designed for heavy-duty industrial applications.

They are available with air ejector or vacuum pump (side-channel exhauster) to generate the recovery air flow.

Problast closed-circuit systems are suitable for cylindrical workpieces and flat surfaces. A typical application is the surface treatment of rollers.

But there are numerous other workpieces and applications for which the closed-circuit system represents an ideal solution, for instance the cleaning of welds. This makes pickling as well as grinding and polishing of the surfaces superfluous.