Co-processing method for aluminum electrolysis carbon-based hazardous waste and electrolytic manganese anode slime

• Main Authors: LONG TENGFA, HUO QIANG, TANG WENLI, ZHANG KAINI, LIN QINGYU, DU JIAYING, FANG ZHIZHEN, JIN YAO, LI RUOYANG
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2024
• Subjects: APPARATUS THEREFOR; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS THEREOF; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; FERROUS OR NON-FERROUS ALLOYS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PRETREATMENT OF RAW MATERIALS; PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to the field of industrial waste resource utilization, in particular to an aluminum electrolysis carbon-based hazardous waste and electrolytic manganese anode slime co-processing method which comprises the following steps: (1) carrying out flotation treatment on aluminum electrolysis carbon residues, and recycling electrolyte and carbon powder; (2) mixing and roasting the carbon powder product and the electrolytic manganese anode slime; (3) acid leaching; (4) extracting and purifying; and (5) preparing manganous-manganic oxide by using a coprecipitation method. According to the method, valuable substances in the aluminum electrolysis carbon-based hazardous waste and the electrolytic manganese anode slime are subjected to resource recovery in the forms of the electrolyte, the lead sulfate and the manganous-manganic oxide, the valuable substances in the two kinds of smelting waste residues are completely recycled, the stacking problem of the two kinds of metallurgical hazardous waste is so