铝电解废阴极-赤泥协同处置回收铁实验研究
Study on Co-processing and Iron Recovery from Aluminum Electrolysis Spent Cathode Carbon and Red Mud
刘遇萍 1陈王莹 1杨秀龙 1龙海1
作者信息
- 1. 六盘水师范学院 化学与材料工程学院, 贵州 六盘水 553004
- 折叠
摘要
铝电解废阴极和赤泥是铝冶炼生产过程中不可避免的大宗危险固体废弃物,对生态环境存在威胁,但也具有极大的回收潜能.通过短流程一步还原法,以废阴极中碳为还原剂,将赤泥中铁还原为可磁选的单质铁或四氧化三铁,实现"双废"协同处置.研究表明:在温度 600℃、时间 300 min、m(废阴极)/m(赤泥)= 0.75∶1 条件下,铁回收率为60.02%.
Abstract
Aluminum electrolysis spent cathode carbon and red mud are inevitable large hazardous solid in aluminum industry,which poses a threat to the ecological environment,but also great recycling potential.A short process one-step reduction method was proposed.Carbon in the spent cathode was used as reductant to reduce iron in red mud to magnetically separable elemental iron or ferric oxide,achieving a"dual waste"collaborative disposal.The results showed that under conditions of 600℃,300 minutes,and ration of spent cathode to red mud is0.75∶1,the iron recovery rate was 60.02%.
关键词
铝电解废阴极/赤泥/还原/铁回收率Key words
aluminum electrolysis spent cathode carbon/red mud/reduction/iron recovery rate引用本文复制引用
基金项目
大学生创新创业训练计划(S202210977062)
六盘水市科技计划(52020-2022-PT-04)
出版年
2024
国家科技期刊平台
NSTL
万方数据