What is a dust explosion? Suspended in the air of the dust, to a certain concentration to form an explosive mixture, encountering an ignition source caused by rapid combustion or even explosion. Dust explosion chemical reaction is very fast, with a very strong destructive force. 7 types of dust that may cause an explosion: 1, metals: such as magnesium, aluminum; 2, coal, food: such as wheat, starch; 3, feed: such as blood, fish meal; 4, agricultural products: such as cotton, tobacco; 5, synthetic materials: such as plastics, dyes; 6, forest products: such as paper powder, wood powder; 7, some factories and mines in the production process of dust, especially organic materials produced in the processing of dust. Dust explosion conditions: 1, the appropriate concentration of combustible dust (generally 30 to 40 grams per cubic meter of aluminum and magnesium dust to reach explosive concentration); 2, the dust is in suspension; 3, a certain amount of oxygen; 4, there is an ignition source or strong vibration and friction; 5, in a relatively confined space. So how to save yourself after a sudden dust explosion, burns? The first 3 days of burn injuries, the rescue treatment is very critical, which is often referred to as the clinical “golden 72 hours”, the scene of first aid is the basis for all rescue and treatment, should learn to master the following scientific skills. “Six skills of first aid for burns” 1, mild burns, especially those caused by life factors, should be immediately flushed with water or the affected limb immersed in cold water for 20 to 30 minutes to cool the injury and reduce the heat damage. 2, wearing clothes parts of serious burns, do not first undress, should immediately pour cold water on the clothes, wait for the local temperature to drop, and then gently remove or cut with scissors. 3, the digestive tract burns can choose milk, egg white, soy milk, edible vegetable oil either, 200 ml each time orally to protect the mucosa of the digestive tract, do not induce vomiting and gastric lavage. 4, fire burns, you should immediately remove the clothing on fire, water to douse the flames or quickly lying on the ground rolling fire, do not run with fire, shouting, so as not to cause burns in the whistle. To cover the mouth and nose with a wet towel to prevent smoke inhalation leads to asphyxiation or poisoning. 5, burns if there is blister formation, Dai Jun Lai reminded, small do not break, to be naturally absorbed and dissipated; large should go to the hospital to deal with, so as not to affect the trauma repair, increasing the chance of infection. 6, ordinary burns are generally not used as special treatment, just keep the trauma and the surrounding clean; larger burns with water rinse, it is best to cover the trauma with clean gauze or cloth sheet, and strive to send to the hospital within 4 hours for treatment.