Abstract
In order to inhibit magnesite effectively, a new macromolecule reagent, sodium polyacrylate (SP), is introduced. Micro-flotation results indicate that SP can strongly inhibit the flotation of magnesite in a wide pH range. When pH = 9, the flotation recovery of magnesite is 90%. After increasing the dosage of SP to 10 mg/L, the flotation recovery of magnesite declines to below 20%. Mineral crystal structure and solution chemistry show that SP easily absorbs the Mg2+ active sites on the surface of magnesite . Meanwhile, SP could form a bridge among the magnesite particles and lead to the flocculation and sedimentation, thus inhibiting the magnesite flotation .
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Acknowledgements
The authors acknowledge the support of the Key Scientific and Technological Project of Henan Province of China (182102310868) and Foundation of Key Laboratory of Radioactive and Rare Scattered Mineral Comprehensive Utilization, Ministry of Land and Resource (RRSM-KF2018-10).
Conflicts of Interest: The authors declare no conflict of interest.
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Cheng, H., Liu, C., Dong, D., Lv, Z., Yang, F. (2020). A Novel Depressant of Sodium Polyacrylate for Magnesite Flotation. In: Azimi, G., Forsberg, K., Ouchi, T., Kim, H., Alam, S., Baba, A. (eds) Rare Metal Technology 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36758-9_33
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DOI: https://doi.org/10.1007/978-3-030-36758-9_33
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