Paper Title:
Leaching Kinetics of MnO2 from Electrolytic Manganese Anode Slimes in the Presence of SO2
  Abstract

The paper describes the kinetics of MnO2 from electrolytic manganese (EM) anode slimesleached by SO2.The effects of stirring speed,SO2 concentration,temperature, and partical size on the leaching rate of manganese are discussed. Experimental results indicated that the leaching of MnO2 by SO2 is 0.86 order with respect to SO2 concentration. The apparent activation energy values for re-action is 25.7KJ/mol,which is consist with the values of activation energy for diffusion control. The kinetic equation can be expressed as: 1-(2/3)x-(1-x)^2/3=(k1/ρr){[SO2]0.86exp(-25700/RT)}t. Meanw-hile, comparative experiments were operated, using analytical class MnO2 and pyrolusite, the differ-ence among the three MnO2 simples reaction with SO2 was identified.

  Info
Periodical
Advanced Materials Research (Volumes 233-235)
Edited by
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Pages
532-536
DOI
10.4028/www.scientific.net/AMR.233-235.532
Citation
Y. F. Li, H. Ye, C. Cao, L. N. He, "Leaching Kinetics of MnO2 from Electrolytic Manganese Anode Slimes in the Presence of SO2", Advanced Materials Research, Vols. 233-235, pp. 532-536, 2011
Online since
May 2011
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Price
$32.00
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