Handling of raw clay and other raw materials often gives rise to nuisance or even hazardous levels of dust. Systems to remove the dust must be equipped with reliable dust collectors able to handle moderate and at times very heavy dust concentrations. Where china clay is milled, the dust loadings can be exceptionally high and a pulse jet filter with outstanding self-cleaning ability is needed. The AAF FabriPulse range is proven to cope thanks to its ideal configuration of vertical filter tubes with an optimised length to diameter ratio, generously sized pulse cleaning components and well developed internal flow pattern designed to deal with the heaviest of duties.