1990 年 69 巻 9 号 p. 819-822
Powders and transporting equipments are charged electrostatically in powder transportation. The static electrification is affected by the transport conditions, such as particle size, resistivity, transport concentration and velocity, relative humidity, etc. Spark discharge of the electrostatic charge might lead to the ignition of dust cloud.
The relations between the transport condition and the electrification, and between the electrification and the dust explosion are reviewed in this report.