Dust explosion is a dangerous industrial safety problem, which needs a series of protective measures to prevent and control. The main protective measures for dust explosion are: 1. Explosion risk assessment: assess the explosion risk in the workplace, understand the characteristics, concentration and flammability of dust, and formulate corresponding protection strategies. 2. Prevent dust accumulation: keep the workplace clean, regularly remove dust accumulation, and use dust suction equipment or wet cleaning methods. 3. Control the dust diffusion: install an effective ventilation system to control the dust concentration in the air and prevent the dust from spreading to flammable areas. 4. Prevent contact with fire source: ensure that the fire source is isolated from dust, and use explosion-proof equipment and tools to avoid sparks or electrostatic discharge. 5. Explosion-proof equipment and facilities: Use equipment and tools that meet explosion-proof standards, such as explosion-proof electrical equipment and explosion-proof lamps, to reduce the explosion risk. 6. Explosion-proof training and awareness: conduct appropriate training for employees, improve their understanding and awareness of dust explosion, educate employees to use protective equipment correctly, and abide by safety operation procedures.