Kinetics of Phosphorus Removal from High-Phosphorus Iron Ores by HCl Leaching

Juan An; Wen Qiang Yang; Jian Guo Yin; Xiao Li Yuan; Xue Jiao Zhou; Wen Tang Xia

doi:10.4028/www.scientific.net/AMR.868.455

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 868Kinetics of Phosphorus Removal from...

Kinetics of Phosphorus Removal from High-Phosphorus Iron Ores by HCl Leaching

Abstract:

The leaching kinetics of high-phosphorus iron ores in HCl solution was investigated. The effects of temperature ranging from 27°C to 50°C, particle size from 0.18-1.25 mm and HCl concentration from 0.5 to 3.5 mol·L^-1 on the leaching efficiency of phosphorus were determined. The dissolution rates are significantly influenced by the temperature and concentration of acid solutions. The experimental results have been analyzed using the shrinking core model for diffusion control. The calculated apparent activation energy of the process is about 43.48 kJ·mol^-1, and a reaction order with respect to HCl is 0.64.

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Periodical:

Advanced Materials Research (Volume 868)

Pages:

455-458

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.868.455

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Online since:

December 2013

Authors:

Juan An, Wen Qiang Yang, Jian Guo Yin, Xiao Li Yuan, Xue Jiao Zhou, Wen Tang Xia*

Keywords:

High-Phosphorus Iron Ores, Hydrochloric Acid, Kinetic, Phosphorus Removal

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