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Experimental Study on Intensified Leaching of Vanadium Ore

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Abstract:

The wet technology for vanadium extraction from the complex refractory vanadium ores was studied as a preferred approach with phosphoric acid as helper leaching agent. The results showed that the addition of phosphoric acid could improve the vanadium leaching rate significantly. Combination with sulfuric acid, high amount of phosphoric acid and high leaching temperature can promote the leaching of vanadium. With the sulfuric acid concentration of 425.6 g/L, leaching temperature of 90 °C, leaching time of 4 h and liquid-solid mass ratio 2:1, the vanadium leaching rate of 90 wt.% can be achieved. Meanwhile, about 15% of the consumption of sulfuric acid could be reduced with 39 wt.% phosphoric acid.

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Eco-Materials Processing and Design XIII View Preview

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Periodical:

Materials Science Forum (Volume 724)

Pages:

355-358

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.724.355

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Online since:

June 2012

Authors:

Jun Zhu, Ji Ke Guo, Jing Jing Xue, Xin Li

Keywords:

Helper Leaching Agent, Leaching, Phosphoric Acid, Sulfuric Acid

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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