Some impure mixed metal slag is produced during smelting, but there is still a certain amount of aluminum, which can be separated and refined to obtain some aluminum.

Aluminum profile scrap refers to the waste generated during the production or use of aluminum profiles, mainly including cut-off scraps, unqualified products and used aluminum profiles. These scraps have important economic and environmental value in recycling and reuse.

After pre-treatment, part of the recycled aluminum will be cold processed to turn it into powdered aluminum, and the other part will be recycled using heavy medium beneficiation, parabolic beneficiation and other methods.

Metallurgical waste slag refers to various solid wastes generated in the production process of the metallurgical industry.

​Scrap rails refer to railway rails that cannot be used due to wear or aging during use. These rails can usually be reused after strict inspection and necessary repair.