Red mud recycling by Fe and Al recovery through the hydrometallurgy method: a collaborative strategy for aluminum and iron industry

被引：0
作者：
Xiaolong Liu
Yang Zou
Ran Geng
Bin Li
Tingyu Zhu
机构：
[1] Chinese Academy of Sciences,CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Innovation Academy for Green Manufacture
[2] Center for Excellence in Regional Atmospheric Environment,Institute of Urban Environment
[3] Chinese Academy of Sciences,Faculty of Environmental Science and Engineering
[4] University of Chinese Academy of Sciences,undefined
[5] Kunming University of Science and Technology,undefined
来源：
Environmental Science and Pollution Research | 2023年 / 30卷
关键词：
Red mud; Recycling; Valuable metals; Aluminum industry; Iron and steel industry;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this work, a collaborative strategy for the aluminum and iron industry based on red mud recycling through the hydrometallurgy method was proposed. In this method, Fe3+ and Al3+ were firstly separated from the red mud by using H2SO4 as a leaching agent, which was by-produced from the sintering process of an iron and steel industry. Multiple influence factors on the leaching process were investigated, with the H2SO4 addition amount showing the strongest influence on the leaching rates of Al and Fe. The main components of the filter residue were CaSO4, TiO2, and SiO2, which could be reused as additives in the building materials. Subsequently, the final Fe recovery product was obtained through the co-precipitation, Fe/Al separation, and Fe(OH)3 calcination. In the final product, the content of Fe2O3 reached 82.87%, and the iron grade was 58.01%, meeting the requirement being raw materials for sinter production.
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页码：43377 / 43386
页数：9
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