Abstract: Ammonia caused by aluminum nitride being damp and fluoride pollution of groundwater are the main reasons why aluminum dross becomes a hazardous solid waste.In order to remove aluminum nitride and fluoride in aluminum dross, the purpose of harmless reduction of aluminum dross is achieved.Using the process of adding calcium salt for high-temperature roasting and washing recovery, the effects of roasting temperature and the quality of added calcium salt on the denitrification and fluoride fixation of aluminum dross were studied.The results showed that the addition of CaCl₂ with a mass fraction of 3% as a fluorine-fixing agent, a roasting temperature of 1 300 ℃, and a roasting time of 4 h, under these conditions, the content of aluminum dross nitrogen decreased to 0%, reduced the aluminum dross gas release to 2 mL/g and soluble fluoride ion concentration to 6.71 mg/L, the weight loss of aluminum dross is 13.44%.The aluminum dross calcined under this condition was washed with water, and the remaining inorganic salt components were recovered with a recovery rate of 84%. The research provides a new idea for the harmless reduction and recycling of aluminum dross.