Recycling method for aluminum ash residues of secondary aluminum

• Main Authors: WANG SHUAI, HAN XIUMEI, XU MEIRONG, WANG YINHUAN, SUN LAIZHI, ZHANG CHENGLAN
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2024
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to the technical field of metal recycling, in particular to a recycling method for aluminum ash residues of secondary aluminum. According to the recycled aluminum ash resource utilization method, aluminum ash and an oxidizing agent are placed in mixing equipment to be fully mixed, after the obtained mixture is roasted, a pretreatment substance is obtained, then the pretreatment substance is smashed and placed in a proper amount of peracetic acid aqueous solution for reaction treatment, finally, the obtained reaction product is roasted, and the recycled aluminum ash is obtained. And leaching, filtering and drying the roasted product. According to the recycling method for the aluminum ash of the secondary aluminum, chlorine and fluorine can be effectively removed, and the recovery rate of aluminum can be increased, so that the recovery rate of metal aluminum recovered from the aluminum ash is greatly increased; and moreover, the problem of heavy metal pollution in the dangerous solid waste