Regulation of Electric Potential, Caused by Friction of Particles of Milk Powder Drying Process

The aim of the article is to investigate the phenomenon of Triboelectricity, as the physical process called in technical literature as “Tribocharge”. Tribocharge process occurs during drying industrial lines operation and comprising different elements: e.g., cyclones, pneumatic lines, instantizers, storage hoppers, etc. In our scientific studies, the food product – powder milk is used as the basis. The experimental unit for investigation of these phenomenon elements in laboratory conditions is presented. The results of powder milk particle Tribocharged depending on the experimental tasks and conditions have been revealed. The presented scientific studies are referred to Tribocharge investigation, aimed at the development of the methods eliminating or reducing the negative results arising in the process of spray drying. Tribocharge actively influences the extent of particles cohesive and adhesive bonds and consequently the intensity of powder milk deposits on inner sides of drying equipment and other negative phenomenon during its operation.