Тип публикации: статья из журнала
Год издания: 2023
Идентификатор DOI: 10.17580/cisisr.2023.01.19
Ключевые слова: red mud, cast iron, reduction smelting, ferrum, recycling, alumina production wastes, red mud processing, technological route of recycling
Аннотация: High-iron Bayer red mud, including more than 30 % Fe, is considered as poor iron ore. Owing to global iron deficiency during last decades, the problem of efficient use of iron which is containing in red mud with high Fe content attracts most and most attention. This research includes development of the technological route for Fe exПоказать полностьюtraction from red mud in cast iron via reduction smelting with consequent accelerated cooling for metal separation from slag. Influence of different experimental parameters (such as temperature, basicity and reduction time) on Fe extraction from red mud was examined in details. The results displayed that separation between metal and slag was complete. Maximal Fe extraction in cast iron was obtained at the temperature 1450 °С and made in average 88.5 % (when using fluxes without soda) and 91.5 % (with soda addition). Microstructure of the samples was determined, it showed the structure of hyper-eutectic white cast iron (ledeburite + graphite). No non-metallic inclusions were revealed in the structure of samples. Optimal experimental results are very important for achievement of large-scale and highefficient red mud recovery.
Журнал: CIS Iron and Steel Review
Выпуск журнала: Т. 25
Номера страниц: 115-121
ISSN журнала: 20720815
Место издания: Moscow
Издатель: Магнитогорский государственный технический университет им. Г.И. Носова, "Ore and Metals" Publishing House