Treatment system and treatment method for detoxification of aluminum electrolysis cell overhaul slag

• Main Authors: LIANG XUEMIN, LIU PEIPEI, HAO HAIFENG, ZHANG JIANXUN
• Format: Patent
• Language: Chinese; English
• Published: 22.04.2022
• Subjects: CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS; CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS; FIRE-FIGHTING; HUMAN NECESSITIES; LIFE-SAVING

The invention belongs to the technical field of electrolytic aluminum waste treatment, and particularly relates to a treatment system and a treatment method for detoxification of aluminum electrolysis cell overhaul slag. The treatment system comprises a mixing tank, a preheating device, a high-temperature heating section, a self-evaporation device and a solid-liquid separation device, a discharge hole of the mixing tank is connected with an inlet of the preheating device; the preheating device comprises multiple stages of preheating sections; the tail end of the preheating device is connected with a high-temperature heating device; the tail end of the high-temperature heating device is connected with a self-evaporation device, the self-evaporation device comprises multiple stages of self-evaporators, and the tail end of the self-evaporation device is connected with a solid-liquid separation device. According to the method, fluoride in the aluminum electrolysis cell overhaul slag is leached under the condition