Automatic Dust Explosion Suppression
Fast fire suppression systems can be used to stop dust explosion, they work with three major considerations in mind:

Extinguishing agent is permanently pressurised
Large diameter discharge orifice
High speed valve opening (usually via a detonated charge)
These considerations are used and a system is made that obeys these rules and can be triggered by a pressure (with a high set point to avoid accidental triggering) or flame sensor (often both are used to stop false alarms).