Process and kinetics of the selective extraction of cobalt from high-silicon low-grade cobalt ores using ammonia leaching

Abstract

An ammonia-based system was used to selectively leach cobalt (Co) from an African high-silicon low-grade Co ore, and the other elemental impurities were inhibited from leaching in this process. This process was simple and environmentally friendly. The results revealed that the leaching ratio of Co can reach up to 95.61% using (NH₄)₂SO₄ as a leaching agent under the following materials and conditions: (NH₄)₂SO₄ concentration 300 g/L, reductant dosage 0.7 g, leaching temperature 353 K, reaction time 4 h, and liquid—solid ratio 6 mL/g. The leaching kinetics of Co showed that the apparent activation energy of Co leaching was 76.07 kJ/mol (i.e., in the range of 40–300 kJ/mol). This indicated that the leaching of Co from the Co ore was controlled by an interfacial chemical reaction, and then the developed leaching kinetics model of the Co can be expressed as $1 - {(1 - \alpha )^{1/3}} = 28.01 \times {10^3} \times r_0^{ - 1} \times C_{{{({\rm{N}}{{\rm{H}}_4})}_2}{\rm{S}}{{\rm{O}}_4}}^{1.5} \times \exp ( - 76073/8.314T) \times t$, where α is the leaching ratio (%) of Co, r ₀ is the average radius (m) of the Co ore particles, T is the temperature (K), and ${C_{{{({\rm{N}}{{\rm{H}}_4})}_2}{\rm{S}}{{\rm{O}}_4}}}$ is the initial reactant concentration (kg/m³).

Keywords

ammonia leaching / leaching kinetics / selective extraction / cobalt

References

[1] F.K. Crundwell, N.B. du Preez, and B.D.H. Knights, Production of cobalt from copper-cobalt ores on the African Copper-belt — An overview, Miner. Eng., 156(2020), art. No. 106450.

[2] Jithesh K, Arivarasu M. Comparative studies on the hot corrosion behavior of air plasma spray and high velocity oxygen fuel coated Co-based L605 superalloys in a gas turbine environment. Int. J. Miner. Metall. Mater., 2020, 27(5): 649.

[3] Iravani S, Varma RS. Sustainable synthesis of cobalt and cobalt oxide nanoparticles and their catalytic and biomedical applications. Green. Chem., 2020, 22(9): 2643.

[4] Zhang SL, Chen WY, Cui N, Wu QQ, Su YL. Giant magneto impedance effect of Co-rich amorphous fibers under magnetic interaction. Int. J. Miner. Metall. Mater., 2020, 27(10): 1415.

[5] Rane MV, Bafna VH, Sadanandam R, Sharma AK, Ramadevi K, Menon NK, Fonseca MF, Tangri SK, Suri AK. Recovery of high purity cobalt from spent ammonia cracker catalyst. Hydrometallurgy, 2005, 77(3–4): 247.

[6] Matjie RH, Mdleleni MM, Scurrell MS. Extraction of cobalt(II) from an ammonium nitrate-containing leach liquor by an ammonium salt of di(2-ethylhexyl)phosphoric acid. Miner. Eng., 2003, 16(10): 1013.

[7] Setiawan H, Petrus HTBM, Perdana I. Reaction kinetics modeling for lithium and cobalt recovery from spent lithium-ion batteries using acetic acid. Int. J. Miner. Metall. Mater., 2019, 26(1): 98.

[8] Kapusta JPT. Cobalt production and markets: A brief overview. JOM, 2006, 58(10): 33.

[9] Feng CY, Zhang DQ. Cobalt deposits of China: Classification, distribution and major advances. Acta. Geol. Sin., 2004, 78(2): 352.

[10] Moskalyk RR, Alfantazi AM. Review of present cobalt recovery practice. Min. Metall. Explor., 2000, 17(4): 205.

[11] Sharma IG, Alex P, Bidaye AC, Suri AK. Electrowinning of cobalt from sulphate solutions. Hdrometallurgy, 2005, 80(1–2): 132.

[12] Zhang MZ, Zhu GC, Zhao YN, Feng XJ. A study of recovery of copper and cobalt from copper-cobalt oxide ores by ammonium salt roasting. Hydrometallurgy, 2012, 129–130, 140.

[13] Apua MC, Mulaba-Bafubiandi AF. Dissolution of oxidised Co — Cu ores using hydrochloric acid in the presence of ferrous chloride. Hydrometallurgy, 2011, 108(3–4): 233.

[14] Gupta B, Deep A, Singh V, Tandon SN. Recovery of cobalt, nickel, and copper from sea nodules by their extraction with alkylphosphines. Hydrometallurgy, 2003, 70(1–3): 121.

[15] Liu ZX, Yin ZL, Xiong SF, Chen YG, Chen QY. Leaching and kinetic modeling of calcareous bornite in ammonia ammonium sulfate solution with sodium persulfate. Hydrometallurgy, 2014, 144–145, 86.

[16] Liu ZX, Yin ZL, Hu HP, Chen QY. Leaching kinetics of low-grade copper ore containing calcium-magnesium carbonate in ammonia-ammonium sulfate solution with persulfate. Trans. Nonferrous Met. Soc. China, 2012, 22(11): 2822.

[17] Baba A, Ghosh MK, Pradhan SR, Rao DS, Baral A, Adekola FA. Characterization and kinetic study on ammonia leaching of complex copper ore. Trans. Nonferrous Met. Soc. China, 2014, 24(5): 1587.

[18] Zhao ZP, Guo M, Zhang M. Extraction of molybdenum and vanadium from the spent diesel exhaust catalyst by ammonia leaching method. J. Hazard. Mater., 2015, 286, 402.

[19] Wang C, Guo YF, Wang S, Chen F, Tan YJ, Zheng FQ, Yang LZ. Characteristics of the reduction behavior of zinc ferrite and ammonia leaching after roasting. Int. J. Miner. Metall. Mater., 2020, 27(1): 26.

[20] Chen YM, Liu NN, Hu F, Ye LG, Xi Y, Yang SH. Thermal treatment and ammoniacal leaching for the recovery of valuable metals from spent lithium-ion batteries. Waste. Manage., 2018, 75, 469.

[21] Wu CB, Li BS, Yuan CF, Ni SN, Li LF. Recycling valuable metals from spent lithium-ion batteries by ammonium sulfite-reduction ammonia leaching. Waste. Manage., 2019, 93, 153.

[22] Qi YP, Meng FS, Yi XX, Shu JC, Chen MJ, Sun Z, Sun SH, Xiu FR. A novel and efficient ammonia leaching method for recycling waste lithium ion batteries. J. Cleaner Prod., 2020, 251, 119665.

[23] Oluokun OO, Otunniyi IO. Kinetic analysis of Cu and Zn dissolution from printed circuit board physical processing dust under oxidative ammonia leaching. Hydrometallurgy, 2020, 193, 105320.

[24] Meng XH, Han KN. The principles and applications of ammonia leaching of metals—A review. Miner. Process. Extr. Metall. Rev., 1996, 16(1): 23.

[25] Peng N, Peng B, Liu H, Xue K, Chen D, Lin DH. Reductive roasting and ammonia leaching of high iron-bearing zinc calcines. Miner. Process. Extr. Metall., 2018, 127(1): 1.

[26] S.W. Li, H.Y. Li, W.H. Chen, J.H. Peng, A.Y. Ma, S.H. Yin, L.B. Zhang, and K. Yang, Ammonia leaching of zinc from low-grade oxide zinc ores using the enhancement of the microwave irradiation, Int. J. Chem. React. Eng., 16(2018), No. 3, art. No. 20170055.

[27] Dean JA. Lange’s Handbook of Chemistry, 1991, 13th ed., Beijing, Science Press

[28] Department of Analytical Chemistry Central South Institute of Mining and Metallurgy. Handbook of Chemical Analysis, 1982, Beijing, Science Press

[29] T. Nakamura, H. Kudo, Y. Tsuda, Y. Matsushima, and T. Yoshida. Electrodeposition of Zn-Co-Terephthalate MOF and Its Conversion to Co-Doped ZnO Thin Films, ECS J. Solid State Sci., 10(2021), No. 5, art. No. 057002.

[30] Liu JH, Zhang HR, Wang RX, Huang T. Process of ammonium leaching oxidation ore of cobalt and copper at high pressure. Chin. J. Rare Met., 2012, 36(1): 149.

[31] Li Y, Kawashima N, Li J, Chandra AP, Gerson AR. A review of the structure, and fundamental mechanisms and kinetics of the leaching of chalcopyrite. Adv. Colloid Interface Sci., 2013, 197–198, 1.

[32] Khawam A, Flanagan DR. Solid-state kinetic models: Basics and mathematical fundamentals. J. Phys. Chem. B., 2006, 110(35): 17315.

[33] Zhou XJ, Chen YL, Yin JG, Xia WT, Yuan XL, Xiang XY. Leaching kinetics of cobalt from the scraps of spent aerospace magnetic materials. Waste. Manage., 2018, 76, 663.

[34] Deng CH, Feng QM, Chen Y. Studies on the leaching kinetics of cobalt from spent catalyst with sulphuric acid. Miner. Process. Extr. Metall., 2007, 116(3): 159.

[35] Li L, Bian YF, Zhang XX, Guan YB, Fan ES, Wu F, Chen RJ. Process for recycling mixed-cathode materials from spent lithium-ion batteries and kinetics of leaching. Waste. Manage., 2018, 71, 362.