Oct 1, 2020 · High-iron red mud could potentially become a valuable resource if the iron could be extracted efficiently. A novel method for iron recovery from red mud using suspension magnetization roasting (SMR) followed by low-intensity …

Mar 15, 2022 · An innovative suspension magnetization roasting followed by magnetic separation process was developed to recover iron from high-iron red mud (HIRM), and the effects of roasting temperature, roasting time, CO concentration and grinding fineness on …

For high-iron red mud, the total iron (TFe) content in concentrates and iron recovery initially increased and then decreased with increasing NaOH concentration and FeSO 4 concentration. Coarse red mud was beneficial to increasing the TFe …

Apr 25, 2024 · This paper reviews a large-scale and harmless treatment method for high-iron red mud (HRM) that involves recovering iron from HRM using pyrometallurgy and utilizing the tailings after iron extraction from high-iron red mud (HRMT) to prepare cementitious materials.

Mar 10, 2022 · Using starch as the reducing agent, the "high-pressure hydrothermal reduction method" is used to separate and recover sodium, aluminum, and iron in high-iron red mud in one step in an alkaline hydrothermal system. This article focuses on the hydrothermal reduction behavior of the iron ore phase.

For high-iron red mud, the total iron (TFe) content in concentrates and iron recovery initially increased and then decreased with increasing NaOH concentration and FeSO4 concentration. Coarse red mud was beneficial to increasing the TFe …

May 23, 2022 · RM (red mud), which comes from the Bayer process, has a huge annual output and is harmful to the environment. Because of the high iron content in RM, the process of iron recovery from RM can reduce the amount of RM well and create economic benefits, so it is a promising process.

Red mud is the waste generated during aluminum production from bauxite, containing lots of iron and other valuable metals. In order to recover iron from red mud, the technology of adding sodium carbonate—reduction roasting—magnetic separation to treat high-iron red mud was developed.

Sep 1, 2024 · Red mud from alumina production poses risks due to inefficient disposal. Physical and chemical iron extraction face low recovery and acidic wastewater issues. Pyrometallurgical iron recovery is energy-intensive. Biomass pyrolytic reduction offers a …

Apr 8, 2022 · In this paper, the characteristics and current problems associated with red mud and the progress of research on iron extraction from high-iron red mud are briefly described.