Use of dustiness data to predict concentration and composition of aerosols emitted from bulk material handling

M. Parey*, E. Schmidt, University of Wuppertal, Germany

The use of powders and bulk materials is common and widely spread in industries entailing dust emissions from essential handling procedures, e.g. dosing, conveying and filling. Emissions of fine dust fractions lead to occupational hazards and quality losses as well as obligations to reduce the airborne particle concentration by de-dusting technologies.

For all purposes it is useful to know about the particle sizes, concentration and composition of the airborne dust to assess the specific risk for each powder and applied handling procedures. Disperse characteristics, different particulate material compositions and their effective adhesive forces as well as the mechanical stress within the processes strongly influence the dust release. As a result the dustiness of a powder can be seen as a major product characteristic for manufacturers and users. Currently there is no universal way to predict the dustiness of powders so that it must be examined by testing methods.

This work refers to a research looking for a new way to quantify dust emissions and predict the aerosol composition by combining disperse, material and process characteristics. ...

Session: G11 - Short Oral + Poster Presentations
Day: 12 October 2016
Time: 14:45 - 16:45 h

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