基于氧化铝赤泥的拜耳法回收再利用技术研究  

Study on Bayer Recycling Technology Based on Alumina Red Mud

作　　者：黎娜 刘吉 邱峰 LI Na;LIU Ji;QIU Feng(N.E.U.Engineering&Research Institute Co.,Ltd,Shenyang 110166,China)

机构地区：[1]东北大学设计研究院(有限公司),辽宁沈阳110166

出　　处：《世界有色金属》2020年第19期1-2,共2页World Nonferrous Metals

摘　　要：传统赤泥回收利用方法反应物料的反应率较小,为了提高赤泥在回收过程中的反应率,对基于氧化铝赤泥的拜耳法回收再利用技术进行研究。首先分析赤泥中矿物结构的组成,确定赤泥中能够回收的金属元素,然后根据金属元素的组成和含量的不同,对有价金属选择酸法或烧结法进行回收利用,需要注意烧结过程中物料的配比、烧结的温度和时间等,确保物料能够完全反应。通过实验对比结果发现,设计的赤泥回收再利用技术能够明显提高反应物料的反应率,验证了回收利用技术的有效性。In order to improve the reaction rate of red mud in the recovery process,the Bayer method based on alumina red mud was studied.First,the composition of mineral structure in red mud is analyzed,the metal elements that can be recovered in red mud are determined,and then the valuable metal selective acid method or sintering method is recycled according to the composition and content of metal elements.Attention should be paid to the ratio of materials,sintering temperature and time to ensure the complete reaction of materials.The experimental results show that the red mud recovery and reuse technology can obviously improve the reaction material The efficiency of recycling technology is verified.

关 键 词：氧化铝赤泥 拜耳法 回收再利用 

分 类 号：TF843.1[冶金工程—有色金属冶金]