Composition and Properties of Iron Oxides in the Products of Hydrothermal Treatment of Red Mud and Bauxites

Pasechnik, L.А.; Скачков, В. М.; Bibanaeva, S. A.; Medyankina, I. S.; Бамбуров, В. Г.

doi:10.1134/s0036023622060183

Cited by 6 publications

(1 citation statement)

References 33 publications

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“…Through a statistical analysis of a large amount of the relevant literature on red mud, it was found that the utilization of red mud in China is mainly concentrated in three areas [12]: material preparation in the construction and chemical industries [13][14][15][16][17][18][19], environmental governance [20][21][22][23][24], and metal recovery in metallurgical fields [25][26][27][28][29][30][31][32]. Although RM has been widely used in these fields, its utilization rate is very low.…”

Section: Introductionmentioning

confidence: 99%

Resource Utilization Potential of Red Mud: A Study on the Micro-Mechanism of the Synergistic Effect of Multiple Solid Waste Filling Materials

Zhang,

Yan,

Bai

et al. 2023

Sustainability

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Red mud (RM) is a common industrial byproduct that is characterized by high alkalinity, high pollution, and difficult utilization. In this paper, gangue (CG), flue gas desulfurization gypsum (FGD), and silicate cement (PC) were used to assist red mud in the preparation of red mud-based composite filler material (RMC), aiming at the large-scale resource utilization of RM. The effects of the mass ratio of RM/CG, the mass ratio of FGD/(RM + CG), and the water–solid ratio (WCR) on the multi-angle properties of RMC were investigated and the optimal ratios were determined. The results showed that the RM/CG was 7:1, FGD/(RM + CG) was 4%, and WCR was 0.51 (RMC8), and the system could increase the RM content to 70%. The microstructural analysis of RMC using a specific surface area and porosity analyzer (BET), X-ray diffractometer (XRD), and scanning electron microscope (SEM) showed that its hydration products could remodel the pore structure, encapsulate and cement the coarse and fine particles into a dense matrix, and play a certain alkali reduction role, which revealed the microscopic synergistic mechanism between multiple solid wastes. The study shows that the comprehensive disposal of RM reduces the pollution released into the environment and provides new ideas for the green development of mines.

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