期刊
METALS
卷 10, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/met10010032
关键词
red mud; Mossbauer spectroscopy; reductive smelting; thermodynamic modeling; slag; pig iron
资金
- Program of Basic research of the Presidium of Russian Academy of Science [39, AAA-A18-118031690039-9]
- Ministry of Education and Science of the Russian Federation [11.7971.2017/6.7]
The chemical and mineral composition of the red mud from the Ural Aluminum Plant were studied by XRF, XRD, and Mossbauer spectroscopy. Experiments on reductive smelting of red mud were carried out in a range of temperatures (1650-1750 degrees C) to recover iron from the aluminum production waste with maximum efficiency. It was found that it is possible to obtain pig iron with a high content of titanium, phosphorus, and vanadium, and low sulfur content. The efficiency of iron recovery at 1750 degrees C was found to be around 98%. Thermodynamic calculations were carried out to assist in finding the optimal conditions for the process (e.g., carbon content, furnace temperature, slag liquidus temperature). It was also found that the pig iron phase obtained at 1650 to 1700 degrees C is not separated from the slag phase into ingot compared with the sample obtained at 1750 degrees C. Pig iron obtained at 1750 degrees C can be used to produce molds for the steel-casting equipment.
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