Aluminum dust extraction
PROBLEMS OF THE ALUMINIUM DUST EXTRACTION PROCESS
Aluminium dust produced during the grinding or polishing of aluminium profiles forms a highly explosive mixture with air. Aluminium dust is not only hazardous in the air, but also in the area of the production machine or grinding machine, where it can be highly dangerous.
The extraction of aluminium dust has fixed rules in extraction systems. The rules are laid down in the European ATEX directives. These directives are legislation on the design, sale and operation of equipment and protective systems intended for use in potentially explosive atmospheres. When extracting explosive aluminium dust, the minimum prescribed speed in the extraction duct must be observed in order to avoid the formation of deposits in the suction duct. The filtration system must be equipped with explosion relief safety features. The suction pipe must be fitted with protection against the propagation of the pressure wave to the suction sources. The whole assembly shall be pressure-resistant so that any explosion in the filter unit will not damage the individual parts.