Synergistic reutilization of red mud and spent pot lining for recovering valuable components and stabilizing harmful element

A large amounts of red mud (RM) and spent pot lining (SPL) produced during aluminum extraction and electrolysis are restricting the sustainable development of aluminum industry. In this study, an integrated route for synergistic reutilization of RM and SPL was proposed to deal with this dilemma. To improve the recovery efficiency of metallic Fe, Si and Al were firstly extracted from RM to synthesize 4A-zeolite. Afterwards, reductive roasting...