Leaching behaviour of lithium from a clay sample of Kırka borate deposit in sulfuric acid solutions

Abstract

In this study, the leaching behaviour of lithium, together with cesium and rubidium, from a clay sample of Kırka borate deposit in sulfuric acid solutions was investigated with chemical, XRD, FTIR, DTA analyses methods and specific surface area measurements. It was observed that the leaching behaviours of lithium, cesium and rubidium were quite similar in character in that their extent of leaching, and their leaching markedly increased with the increase of sulfuric acid concentration from 0.1 to 2 M at 90°C. Further increase in the concentration of sulfuric acid to 4 M appeared to have a limited improvement on their leaching ratios. In 2 M H2SO4 solution and at 90°C, the optimum conditions, the leaching ratio values obtained for lithium, cesium and rubidium were 97.2, 83.7 and 65.2%, respectively. The results of XRD, FTIR and DTA analyses applied to the clay sample and the leaching residue obtained after leaching of the clay sample under the optimum conditions collectively showed that almost complete destruction of crystalline smectite structure(s) in the clay sample caused by acid leaching resulted in the formation of amorphous silica phase in the leaching residue. During this transformation, as expected, the specific surface area of the clay sample increased, from 59 to 406 m2/g. The results obtained in this preliminary study may be used in hydrometallurgical treatment of very high tonnages of clay containing processing waste of the Kırka boron plant as a potential lithium (cesium and/or rubidium) resource in the future.

Keywords

• Cesium
• Kırka borate deposit
• Lithium
• Rubidium
• Sulfiric acid leaching

References

1. [1] Vikström H., Davidsson S., Höök M., Lithium availability and future production outlooks, Appl. Energ., 110, 252-266, 2013.
2. [2] Meshram P., Pandey B.D., Mankhand T.R., Extraction of lithium from primary and secondary sources by pre-treatment, leaching and separation: A comprehensive review, Hydrometallurgy, 150, 192-208, 2014.
3. [3] Choubey P.K., Kim M.-s., Srivastava R.R., Lee J.-c., Lee J.-Y., Advance review on the exploitation of the prominent energy-storage element: Lithium. Part I: From mineral and brine resources, Miner. Eng., 89, 119-137, 2016.
4. [4] Swain B., Recovery and recycling of lithium: A review, Sep. Purif. Technol., 172, 388-403, 2017.
5. [5] Li H., Eksteen J., Kuang G., Recovery of lithium from mineral resources: State-of-the-art and perspectives - A review, Hydrometallurgy, 189, 105129, 2019.
6. [6] Tadesse B., Makuei F., Albijanic B., Dyer L., The beneficiation of lithium minerals from hard rock ores: A review, Miner. Eng., 131, 170-184, 2019.
7. [7] Gu H., Guo T., Wen H., Luo C., Cui Y., Du S., Wang N., Leaching efficiency of sulfuric acid on selective lithium leachability from bauxitic claystone, Miner. Eng., 145, 106076, 2020.
8. [8] Karrech A., Azadi M.R., Elchalakani M., Shahin M.A., Seibi A.C., A review on methods for liberating lithium from pegmatities, Miner. Eng., 145, 106085, 2020.

9. [9] Helvaci C., Mordogan H., Çolak M., Gündogan I., Presence and distribution of lithium in borate deposits and some recent lake waters of west-central Turkey, Int. Geol. Rev., 46, 177-190, 2004.
10. [10] Gündoğdu M.N., Yılmaz O., Methods of clay mineralogy, Proc. 1st Nat. Clay Symp., Adana-Turkey, pp:319-330, 1984 (in Turkish).
11. [11] Mordoğan H., Akdağ M., Helvacı C., Lithium recover from low-grade lithium-bearing clays by H2SO4 and roast-water leach processes, Geosound, 24, 141-150, 1994 (in Turkish).
12. [12] Komadel P., Madejová J., Janek M., Gates W.P., Kirkpatrick R.J., Stucki J.W., Dissolution of hectorite in inorganic acids, Clays Clay Miner., 44, 228-236, 1996.
13. [13] Steudel A., Batenburg L.F., Fischer H.R., Weidler P.G., Emmerich K., Alteration of swelling clay minerals by acid activation, Appl. Clay Sci., 44, 105-115, 2009.
14. [14] Lee W.-J., Yoon S.-j., Chon C.-M., Heo C.-H., Lee G.-J., Lee B.-H, Cicek M., Lithium extraction from smectitic clay occurring in lithium-bearing boron deposits in Turkey, J. Miner. Soc. Korea, 29, 167-177, 2016 (in Korean).
15. [15] Baydır A.T., Erdoğan Y., Dissolution of the rubidium from Eti Mine Kırka Boron Management waste, AKU J. Sci. Eng., 13, 025702, 2013 (in Turkish).
16. [16] Van Rompaey K., Van Ranst E., De Coninck F., Vindevogel N., Dissolution characteristics of hectorite in inorganic acids, Appl. Clay Sci., 21, 241-256, 2002.
17. [17] Madejová J., Bujdák J., Janek M., Komadel P., Comparative FT-IR study of structural modifications during acid treatment of dioctahedral smectites and hectorite, Spectrochim. Acta A, 54, 1397-1406, 1998.
18. [18] Grim, R.E., Clay Mineralogy, 2nd Edition, McGraw-Hill Book Company, New York, 1968.
19. [19] Guggenheim S., van Groos A.F.K., Baseline studies of the clay minerals society source clays: Thermal analysis, Clays Clay Miner., 49, 433-443, 2001.
20. [20] Yalçın S., Özbelge Ö., Acid activation of bentonite, Proc. 2nd Nat. Clay Symp., Ankara-Turkey, pp:229-250, 1985 (in Turkish).
21. [21] Ehsani İ., Turianicová E., Baláž M., Obut A., Effects of sulphuric acid dissolution on the physical and chemical properties of a natural and a heated vermiculite, Acta Montan. Slovaca, 20, 110-115, 2015.