Journal of Advanced Materials and Technologies

Journal of Advanced Materials and Technologies

Experimental/theoretical Study on the Effect of Particles Size on Carbothermal Reduction of ZnO

Authors
Mohammad Nusheh 1
Hossein Khosroabadi 2
1 Islamic Azad University, Department of Engineering, Zanjan, Iran
2 Sharif University of Technology, Department of Physics, Tehran, Iran
10.30501/jamt.2635.70280
Abstract
Carbothermal reduction process has been regarded as an industrial method for extraction of zinc metal since a long time ago. Moreover, recently recovery of zinc from electric arc furnace dust, by carbothermal process, has been considered by many researchers. Since this process involves a solid state boundary reaction (direct reduction) between zinc oxide and carbon particles, the reduction rate is very sensitive to the particle size of reactants. In this study, the effect of zinc oxide particle size on kinetics of process has been studied by isothermal gravimetric analysis technique. Furthermore, in order to interpret the obtained data, a mathematical model has been developed which is acceptably fitted to the experimental results.
Keywords
Carbothermal reduction
zinc
kinetics
mathematical modeling
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Journal of Advanced Materials and Technologies
Volume 3, Issue 4
Winter 2014
Pages 35-41

  • Receive Date 03 May 2014
  • Revise Date 15 February 2015
  • Accept Date 25 February 2015