Factors influencing the Zn and Mn extraction from pyrometallurgical sludge in the steel manufacturing industry

Abstract : In this laboratory study, a process has been developed for selectively leaching zinc and manganese from pyrometallurgical sludge produced in the steel manufacturing industry. In the first part, the yield of Zn extraction was studied using four factors and four levels of the Box-Behnken response surface design. The optimum conditions for the step of Zn leaching were determined to be a sulfuric acid concentration of 0.25 mol/L, a pulp density of 10%, an extraction temperature of 20 degrees C, and three stages of leaching. Under such conditions, 75% of the Zn should be leached. For Mn leaching, the optimum conditions were determined to be a sulfuric acid concentration of 0.25 mol/L, a Na2S2O5/Mn stoichiometry of 1, a leaching time of 120 min and two leaching steps. In this case, 100% of the Mn should be leached.
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Journal of Environmental Management, Elsevier, 2015, 158, pp.48-54. 〈10.1016/j.jenvman.2015.04.039〉
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https://hal.univ-lorraine.fr/hal-01266904
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Soumis le : mercredi 3 février 2016 - 15:25:32
Dernière modification le : jeudi 11 janvier 2018 - 06:25:27

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Julien Mocellin, Guy Mercier, Jean Louis Morel, J. F. Blais, Marie-Odile Simonnot. Factors influencing the Zn and Mn extraction from pyrometallurgical sludge in the steel manufacturing industry. Journal of Environmental Management, Elsevier, 2015, 158, pp.48-54. 〈10.1016/j.jenvman.2015.04.039〉. 〈hal-01266904〉

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