有色金属科学与工程2023，Vol.14Issue(6)：773-780,8.DOI:10.13264/j.cnki.ysjskx.2023.06.004
高铁赤泥熔融还原过程中钠铝硅的行为研究
Study on the behavior of sodium,aluminum and silicon in the melting reduction of high-iron red mud
摘要
Abstract
With the development of the alumina industry in China,a large amount of high-iron red mud has been stockpiled.The storage of red mud not only has increased the production cost of alumina enterprises but also has caused environmental pollution.At the same time,the metal resources in the high-iron red mud have not been effectively recovered.In this paper,the red mud with high iron content was treated by the melting reduction method.The changes in Na,Al and Si behavior in the process of red mud melting reduction were studied through the composition analysis,phase analysis and microscopic morphology analysis of the reduction slag,which provided a theoretical basis for producing cement using red mud melting reduction slag.The results showed that the Na element in the red mud is transformed from NaAlSiO4 to NaCaAlSi2O7 and remains in the tailings.The Al element was mostly transformed into NaCaAlSi2O7,Ca2Al(AlSi)O7,etc.,in the tailings by 3CaO·Al2O3,while the Si element was transformed from Ca2SiO4 to NaCaAlSi2O7,Ca2Al(AlSi)O7,Ca2Al2SiO7,etc.关键词
高铁赤泥/熔融还原/物相分析Key words
high-iron red mud/smelting reduction/phase analysis分类
矿业与冶金引用本文复制引用
朱忠南,吕国志,李晓飞,蒋志刚,张廷安..高铁赤泥熔融还原过程中钠铝硅的行为研究[J].有色金属科学与工程,2023,14(6):773-780,8.基金项目
国家自然科学基金资助项目(U1710257,51874078,U1202274) （U1710257,51874078,U1202274）
