摘要
电解槽用废除尘布袋是电解铝行业不可回避的特征性废弃物,其处置和利用是行业面临的共性难题,目前国内对电解铝行业废除尘布袋处置利用工艺的研究不够充分,对火法处置关键工艺参数研究不透彻,无法支撑行业可持续绿色发展需要。本文基于国内不用区域电解槽废除尘布袋物相和成分的分析,开展了电解铝电解槽废旧除尘布袋火法处置利用工艺研究,并结合试验结果进行了火法处置利用技术分析。结果得出:在通空气量6 L/min条件下,废旧除尘布袋经过750℃火法处置后,处置效果及经济性最优,纤维烧失率达95%;经火法烧结工艺处理后,电解铝企业除尘布袋纤维可被作为燃料再利用,烧结粉尘碳含量低,可返回电解槽使用。
Waste filter bag for electrolytic cell is an unavoidable typical waste in the electrolytic aluminium industry,and its disposal and utilization is the common challenge facing the industry.Currently,the research on waste filter bag disposal and utilization technology has been insufficient with a lack of thorough study on the key process parameters of pyrometallurgical process,which is unable to support the industrial demand for green and sustainable development.By analyzing phases and compositions of waste bag filter for electrolytic cells in different areas of China,this paper conducts a study on the disposal and utilization of waste bag filter by pyrometallurgical process and analyzes this process based on the test results.The results show that the disposal effect and economic benefit are the best,when the fiber loss on ignition is 95% after the waste bag filter is pyrometallurgically treated at 750 ℃ with the air supply volume of 6 L/min.After the sintering process,the filter bag fiber of electrolytic aluminum enterprises can be reused as fuel,and the sintered dust,with a low carbon content,can be returned to the electrolytic cell.
作者
高宇
刘万超
庄凌云
孙凤娟
刘中凯
GAO Yu;LIU Wan-chao;ZHUANG Ling-yun;SUN Feng-juan;LIU Zhong-kai(Chinalco Environmental Protection and Energy Conservation Group Co.,Ltd.,Beijing 102200,China;Zhengzhou Research Institute of Nonferrous Metals Co.,Ltd.,Aluminum Corporation of China,Zhengzhou 450041,China)
出处
《中国有色冶金》
CAS
北大核心
2022年第6期97-102,共6页
China Nonferrous Metallurgy
基金
国家重点研发计划项目(2019YFC1908403)。
关键词
电解铝
废除尘布袋
无害化处置
资源利用
通气量
火法
烧结
碳
硫
electrolytic aluminum
waste filter bag
harmless disposal
resource recycling
air supply volume
pyrometallurgy
sintering
carbon
sulfur
