Mechanisms of electrostatic charge reduction of granular media with additives on different surfaces

The paper presents the results of an investigation of the role of different operational and material variables in the triboelectrification process and subsequent charge remediation by addition of different additives under typical production conditions encountered in the industry (35 ± 5% RH, 25 ± 2 °C). Different particle types, surfaces, additives and their concentrations are considered as variables for the study. It was found that charge reduction linearly increased with increasing concentrations before plateauing off at higher concentrations for all additives. The extent of charge reduction was found to be a function of both moisture content and work function of the additives.