Comparison of the electric charging properties of particulate materials in gas–solids flows in pipelines

The charging trends of particulate materials in gas–solid flows in pipelines are of considerable interest to designers of such flow systems, particularly with regard to flow instruments based on electrostatic measurement principles. Such data may also be useful to other researchers in associated fields. The authors of this paper, therefore, set about obtaining such data empirically. In order to achieve this, a small-scale test rig was designed...