title: Ignition temperature of magnesium powder clouds: a theoretical model.
abstract: Minimum ignition temperature of dust clouds (MIT-DC) is an important consideration when adopting explosion prevention measures. This paper presents a model for determining minimum ignition temperature for a magnesium powder cloud under conditions simulating a Godbert-Greenwald (GG) furnace. The model is based on heterogeneous oxidation of metal particles and Newton's law of motion, while correlating particle size, dust concentration, and dust dispersion pressure with MIT-DC. The model predicted values in close agreement with experimental data and is especially useful in predicting temperature and velocity change as particles pass through the furnace tube.
authors.affiliation: Fire & Explosion Protection Laboratory, Northeastern University, Shenyang 110004, China. yuanchunmiao@mail.neu.edu.cn
authors.forename: Yuan
authors.initials: Y
authors.lastname: Chunmiao
authors.forename: Li
authors.initials: L
authors.lastname: Chang
authors.forename: Li
authors.initials: L
authors.lastname: Gang
authors.forename: Zhang
authors.initials: Z
authors.lastname: Peihong
mesh_terms: D004391:Dust / Q000032:analysis; D005107:Explosions; D008274:Magnesium; D008962:Models, Theoretical; D010316:Particle Size; D013696:Temperature
chemical_list: D004391:Dust; D008274:Magnesium