Kalit so‘zlar
scheelite
wolframite
roasting
alkaline leaching
sodium tungstate
tungsten recovery
Iqtibos keltirish tartibi
Annotatsiya
This study investigates an integrated technological approach for the extraction and recovery of tungsten from tungsten-bearing raw materials, with particular emphasis on roasting, alkaline leaching, purification, and crystallization processes. Scheelite and wolframite are considered as the principal mineral sources of tungsten. The proposed methodology involves the conversion of tungsten-bearing phases into soluble sodium tungstate, followed by leaching and purification to remove major impurities. Sodium nitrate (NaNO3) was considered as an oxidizing agent, while sodium hydroxide (NaOH) served as an alkaline reagent. The experimental results obtained from eight batches demonstrated consistently high tungsten recovery, ranging from 98.1% to 98.9%, with an average recovery of approximately 98.5%. The variation in reagent consumption showed that high tungsten recovery could be maintained under different NaNO3 and NaOH ratios. The obtained results indicate that the proposed technological scheme provides stable and efficient tungsten recovery and can be considered a suitable basis for processing primary and secondary tungsten-bearing resources. Further optimization of reagent consumption and operating parameters may improve process efficiency and reduce processing costs.
Adabiyotlar ro‘yxati
1. Zeiler, B., Bartl, A., & Schubert, W.-D. (2021). Recycling of tungsten: Current share, economic limitations, technologies and future potential. International Journal of Refractory Metals and Hard Materials, 98, 105546. https://doi.org/10.1016/j.ijrmhm.2021.105546 repositum.tuwien.at
2. Lee, J., Kim, M., Kim, S., Ahn, Y., Lee, B., & Lee, D. (2021). Facile recycling of cemented tungsten carbide soft scrap via mechanochemical ball milling. International Journal of Refractory Metals and Hard Materials, 100, 105645. https://doi.org/10.1016/j.ijrmhm.2021.105645
3. Yurramendi, L., Nieto, J., & Siriwardana, A. (2021). Recovery of tungsten from downstream mineral processing fractions by deep eutectic solvents. Materials Proceedings, 5(1), 96. https://doi.org/10.3390/materproc2021005096
4. Byun, S. Y., Park, J. S., Kang, J. H., Seo, S., Trand, T., & Kim, M. J. (2021). Recovery of tungsten and cobalt from cemented tungsten carbide wastes using carbonate roasting and water leaching. Journal of the Air & Waste Management Association, 71(6), 711–720. https://doi.org/10.1080/10962247.2021.1876780
5. Orefice, M., Nguyen, V. T., Raiguel, S., Jones, P. T., & Binnemans, K. (2022). Solvometallurgical process for the recovery of tungsten from scheelite. Industrial & Engineering Chemistry Research, 61(1), 1–10. https://doi.org/10.1021/acs.iecr.1c03872
6. Li, J., Yang, J., Zhao, Z., Chen, X., Liu, X., He, L., & Sun, F. (2022). Efficient extraction of tungsten, calcium, and phosphorus from low-grade scheelite concentrate. Minerals Engineering, 181, 107462. https://doi.org/10.1016/j.mineng.2022.107462
7. Chen, Y., Huo, G., Guo, X., & Wang, Q. (2022). Sustainable extraction of tungsten from the acid digestion product of tungsten concentrate by leaching-solvent extraction together with raffinate recycling. Journal of Cleaner Production, 375, 133924. https://doi.org/10.1016/j.jclepro.2022.133924
8. Liu, L., Li, J., Xiong, B., Hu, Y., Xia, Z., & Ye, L. (2022). A cleaning approach for the preparation of nano tungsten oxide from waste tungsten powder by hydrogen peroxide leaching and spray pyrolysis. Journal of Cleaner Production, 347, 131223. https://doi.org/10.1016/j.jclepro.2022.131223
9. Cai, Y., Ma, L., Xi, X., & Nie, Z. (2022). Extraction of tungsten and molybdenum from waste alloy assisted by a recyclable roasting additive: β-MnO₂. Journal of Cleaner Production, 380, 135018. https://doi.org/10.1016/j.jclepro.2022.135018
10. Huang, L., Liu, C., Huang, Z., Chen, W., Wang, H., & Wang, S. (2023). Simultaneous recovery of valuable metals W, Co, Ta, and Nb from tungsten leaching residue by sodium-based slag refining. Minerals Engineering, 203, 108334. https://doi.org/10.1016/j.mineng.2023.108334
11. Das, S. K., Nagesh, C. H. R. V. S., Sreenivas, T., Kundu, T., & Angadi, S. I. (2023). A treatise on occurrence, beneficiation and plant practices of tungsten-bearing ores. Powder Technology, 429, 118938. https://doi.org/10.1016/j.powtec.2023.118938
12. Boury, C., Green, S. R., & Allanore, A. (2023). Production of metallic tungsten and tungsten carbide from natural wolframite and scheelite via sulfide chemistry. Metallurgical and Materials Transactions B, 54, 3270–3287. https://doi.org/10.1007/s11663-023-02906-1 DOI
13. Yasuda, K., Suzuki, K., Uehata, R., & Hagiwara, R. (2023). Oxidative dissolution of cemented tungsten carbides in molten sodium carbonate by addition of copper(I) oxide as oxidizing agent for tungsten recycling. Journal of Sustainable Metallurgy, 9, 1390–1398. https://doi.org/10.1007/s40831-023-00737-7
14. Dimitrijević, S. P., Dimitrijević, S. B., Veljković, F., Ivanović, A., Petrović, S. J., Maletaškić, J., & Veličković, S. (2024). Cobalt and tungsten extraction from diamond core drilling crowns by aqua regia leaching. Materials, 17(21), 5179. https://doi.org/10.3390/ma17215179
15. Chen, Y., Huo, G., Guo, X., & Chen, J. (2025). A review of flowsheets for tungsten recovery from scheelite, wolframite and secondary resources and challenges for sustainable production. Hydrometallurgy, 234, 106455. https://doi.org/10.1016/j.hydromet.2025.106455
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Mualliflik huquqi (c) 2026 Boymurodov, N.A. (Author)