Recovery of vanadium from secondary tailing of iron ore by salt roasting-alkaline leaching and solvent extraction processes

Subject Areas : Mineralogy

Rahman Ahmadi ¹ , Behnam Sheykhi ²

1 - Department of Mining Engineering, Imam Khomeini International University (IKIU), Qazvin, Iran
2 - Department of Mining Engineering, Imam Khomeini International University (IKIU), Qazvin, Iran

Received: 2018-01-22 Accepted : 2018-03-12 Published : 2019-01-01

Keywords: Effective parameter, Solvent extraction, Alkaline leaching, Vanadium,

Abstract :

In this paper, the recovery of vanadium from the secondary tail deposits of iron ore by salt roasting-alkaline leaching and solvent extraction has been investigated. To extract the vanadium, after the characterizations studies (XRF, SEM, and EPMA analyzes), preliminary leaching was performed using HCl to reduce lime. Subsequently, the solid that was gained from this stage was put in the oven for palletizing and salt roasting (sodium carbonate) at the temperature of 850°C. This sample was leached in the presence of sodium bicarbonate (NaHCO3), under certain conditions. Solvent extraction experiments were carried out on the solution of carbonated leaching under different conditions. According to SEM studies, the dominant are calcium, vanadium, and phosphorus in the sample. The percentage of Vanadium (V), according to EPMA results in the 20 selected points, was determined as 0.65%. XRF analysis showed that V2O5 and CaO contents of sample were 2.04% and 51.72%, respectively. Lime was reduced to 32.59% after initial leaching with HCl. The carbonate leaching resulted in a total recovery of 93.46% at 85 °C for 60 minutes and with 40 g /l of sodium bicarbonate. In addition, under the optimum conditions of pH=6, the ratio Vaq/Vorg=1 and the organic phase concentration of 0.5 M using the anionic Aliquat 336 extractant, Vanadium can be recovered effectively (extraction efficiency=97%) from alkaline leaching solution in the form of decavanadate or and the anions in the form of or in one stage.

References:

1. Bal Y, Bal KE, Cote G, Lallam A (2004) Characterization of the solid third phases that precipitate from the organic solutions of Aliquat 336 after extraction of molybdenum (VI) and vanadium(V). Hydrometallurgy 75(1-4): 123-134.


2. Cheraghi A, Shaker Ardakani M (2015) Thermodynamics of vanadium (V) solvent extraction by mixture of D2EHPA and TBP, International Journal of Mineral Processing 138:49–54.


3.  El-Nadi YA, Awwad NS, Nayl AA (2009) A comparative study of vanadium extraction by Aliquat-336 from acidic and alkaline media with application to spent catalyst. International Journal of Mineral Processing 92(3-4): 115-120.


4. Ye G (2006) Recovery of Vanadium from LD salg, A state of the art report, Part 1: Facts and Metallurgy of Vanadium,JK 88031.


5. Guibal E, Guzman J, Navarro R., Revilla J (2003) Vanadium extraction from fly ash – preliminary study of leaching, solvent extraction, and sorption on chitosan. Separation Science and Technology 38, 2881–2899.


6. He DS, Feng QM, Zhang GF, Ou LM, Lu YP (2007) An environmentally-friendly technology of vanadium extraction from stone coal, Minerals Engineering 20:1184–6.


7. Lozano LJ, Godínez C (2003) Comparative study of solvent extraction of vanadium from sulphate solutions by primene 81R and Alaminee 336. Minerals Engineering 16(3): 291-294.


8.  Lozano LJ, Juan D (2001) Solvent extraction of polyvanadates from sulphate solutions byPrimene 81R. Its application to the recovery of vanadium from spent sulphuric acidcatalysts leaching solutions. Solvent Extraction and Ion Exchange 19 (4):659–676.


9. Meawad AS, Bojinova DY, Pelovski YG (2010) An overview of metals recovery from thermal power plant solid wastes. Waste Management 30(12): 2548-2559.


10. Nayl AA, Aly HF (2015) solvent extraction of  V(V) and Cr from a acidic leach liquors of ilmenite using Aliquate 336, Transactions of Nonferrous Metals Society of China 25:4183-4191.


11. Nekovár P, Schrötterová  D (2000) Extraction of V(V), Mo(VI) and W(VI) polynuclear species by primene JMT. Chemical Engineering Journal 79(3): 229-233.


12. Olazabal MA, Orive M, Fernández LA, Madariaga JM (1992) Selective extraction of vanadium (V) from solutions containing molybdenum (VI) by ammonium salts dissolved in toluene, Solvent Extraction and Ion Exchange 10(4):623-635.


13. Rao R, Khopkar SM (1992) Liquid anion-exchange separation of vanadium from Malonate Media, Fresenius' journal of analytical chemistry 343(6): 475-481.


14. Sadanandam R, Fonseca MF, Gharat SS, Menon NK, Tangri SK, Mukherjee TK (1996) Recovery of pure vanadium pentoxide from spent catalyst by solventextraction. Transactions of the Indian Institute of Metals 49(6): 795–801.


15. Sisi L, Qiming F, Guofan Z, Dongsheng He (2014) Recovery of vanadium from alkaline leaching solution from roasted stone coal, Science Asia 40: 69–72.


16. Tangri SK, Suri AK, Gupta CK (1998) Development of solvent extraction processes forproduction of high purity oxides of molybdenum, tungsten and vanadium.Transactions of the Indian Institute of Metals 51 (1): 27–39.


17. Tavakolikhaledi MR (2014) "Vanadium: Leaching and Solvent Extraction", A Thesis Submitted Partial Fulfillment Of The Requirements for the Degree of Doctor of  Philosophy in: The Faculty of Graduate and Postdoctoral Studies (Minerals Engineering), University of British Columbia, Vancouver.


18.  Tokuyama H, Nii S, Kawaizumi F, Takahashi K (2003) Separation of V from Ferichleachant of heavy oil fly ash: application of an ion exchange moving bed, Journal of Chemical Engineering of Japan 36, 486–492.


19. Vitolo S, Seggiani M, Filippi S, Brocchini C (2000) Recovery of vanadium from  heavy oil and orimulsion fly ashes, Hydrometallurgy 57:141–149.


20.  Xiang-yang Ch, Xin-zhe L, Qui-li, Jun Zh (2010) “Leaching Vanadium by High Cincentration Sulfuric Acid from Stone Coal”. Transactions of Noneferrous Metals Society of China 20: 123-126.


21. Yilong Ji, Shaobo Sh, Jianhua L, Yuan X (2017) Cleaner and effective process for extracting vanadium from vanadium slag by using an innovative three-phase roasting reaction, Journal of Cleaner Production, 149:1068-1078.


22. Yosefi N (2008) Recovery of Vanadium from high lime steel making slag, Metallurgical master of science thesis, Amirkabir university of technology.


23. Zeng v, Yong-Cheng Ch (2009) A literature review of the recovery of molybdenum and vanadium from spent hydrodesulphurisationcatalysts, Part II: Separation and purification, Hydrometallurgy: 98 10–20.