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Different Effects of Wet and Dry Grinding on the Activation of Iron Ore Tailings

Yingchun Yang1,*, Liqing Chen1, Yuguang Mao2

1 College of Engineering, Anhui Agricultural University, Hefei, 230036, China
2 College of Civil Engineering, Hunan University, Changsha, 410082, China

* Corresponding Author: Yingchun Yang. Email: email

Journal of Renewable Materials 2021, 9(12), 2261-2276. https://doi.org/10.32604/jrm.2021.015793

Abstract

Improving the activity of Iron Ore Tailings (IOTs) to utilize them as a mineral admixture in cement-based minerals is still challenging. In this paper, the wet grinding technology was employed to stimulate the activity of IOTs, and the traditional dry grinding method was used as a reference. The effect of wet grinding on the activation of IOTs was evaluated through ion leaching from an alkaline solution and the reactivity index. Additionally, a detailed comparison between Dry-grinding Iron Ore Tailings (DIOTs) and Wet-grinding Iron Ore Tailings (WIOTs) was made. This comparison was based on particle characteristics, crystal structures, chemical structure, and surface properties. The results showed that the particle size of IOTs reduced rapidly during wet grinding. In addition, WIOTs had a higher activity index compared to DIOTs. The storage of lattice distortions in the quartz crystal structure was also more significant during the wet grinding process than during the dry grinding process. Moreover, both prolonged dry and wet grinding could destabilize the Si-O bond and decrease the surface binding energy.

Graphical Abstract

Different Effects of Wet and Dry Grinding on the Activation of Iron Ore Tailings

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Cite This Article

Yang, Y., Chen, L., Mao, Y. (2021). Different Effects of Wet and Dry Grinding on the Activation of Iron Ore Tailings. Journal of Renewable Materials, 9(12), 2261–2276.

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cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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