A Model to Evaluate the Dustiness of Powders and Binary Powder Mixtures

Dust emissions of powder handling processes lead to several problems with regard to health, environment, and product quality. Currently, there is no universal method to predict the character and extent of dust release. A model to evaluate the dustiness of powders and binary powder mixtures is introduced and discussed. Disperse characteristics, different particulate material compositions, and effective adhesive forces are considered as the leading factors affecting the dustiness. The outcome of the model allows comparing theoretical dust emissions from different designed powders and predicting the composition of the released dust. The model is demonstrated based on corundum-blended limestone powder. The study also provides a comparison to experimental data.