Abstract: The waste produced in the process of aluminum alloy processing has a certain risk of fire and explosion when encountering humid environment. In order to control the risk of fire and explosion during storage and transportation of alloy waste, it is necessary to study its hydrogen production characteristics. The hydrogen production of aluminum chips, oily aluminum sludge, aluminum grinding dust and aluminum-magnesium alloy grinding dust with different mass and moisture content and the influence of iron on hydrogen production of waste aluminum powder were analyzed by gas component analyzer. The results show that aluminum chips, oily sludge, aluminum polishing dust and aluminum-magnesium alloy polishing dust all have certain hydrogen production capacity in humid environment, and the smaller the particles and thinner the surface oxide layer, the easier it is to produce hydrogen. The quality and moisture content of waste are directly proportional to the hydrogen production rate; Scrap iron does not react with water to produce hydrogen at room temperature and humidity, but because of galvanic corrosion of iron, iron can promote the hydrogen production rate of aluminum processing waste, and the higher the iron content, the more obvious the promotion effect.

Key words: aluminum alloy processing waste, hydrogen, fire and explosion, iron powder