Aluminum dross is a solid waste generated in the aluminum industry production process and has certain value in resource recovery and reuse. Its uses mainly include recovering the metallic aluminum contained in it and extracting reusable elemental aluminum through processing techniques to realize resource recycling; meanwhile, after harmless treatment, aluminum dross can be used to produce building materials such as unburned bricks and concrete admixtures, and can also be used as a raw material for the production of alumina and aluminate cement, or play a role in fields such as roadbed filling and soil improvement, thereby reducing the environmental pressure caused by waste stockpiling and achieving resource utilization.

The main reason for grinding aluminum dross into powder is to improve the efficiency of its subsequent treatment and utilization, with specific reasons as follows:

Facilitating the recovery of metallic aluminum: Aluminum dross usually contains a certain amount of metallic aluminum. After being ground into powder, the specific surface area of the material increases, making aluminum particles more fully exposed. This facilitates separation and recovery through methods such as sieving, magnetic separation, or chemical leaching, thereby improving the recovery rate of aluminum.

Promoting harmless treatment: Aluminum dross may contain harmful substances such as aluminum nitride, which can produce pollutants like ammonia gas when in contact with water. After being ground into powder, the material has a uniform particle size, allowing it to contact treatment agents (such as acid, water, etc.) more fully, accelerating the reaction rate, ensuring that harmful substances are completely decomposed or transformed, and enhancing the effect and efficiency of harmless treatment.

Benefiting resource utilization： Ground into powder, aluminum dross has a finer and more uniform particle size. When used as a raw material in the production of building materials (such as unburned bricks, concrete admixtures), ceramic products, or chemical raw materials, it can mix better with other raw materials, ensuring the performance stability of the products. At the same time, it can increase the admixture amount in materials, enhancing the economy of resource recycling.

Convenient for storage and transportation: Aluminum dross ground into powder is in a powdery form with relatively uniform density, making it easier to compress and pack, reducing storage space. Moreover, it is less likely to agglomerate or separate during transportation, lowering transportation costs and losses.