Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2010, Vol. 31 ›› Issue (1): 8-11.DOI: -

• OriginalPaper • Previous Articles     Next Articles

On the hybrid modeling method of cobalt oxalate grain size distribution in hydrometallurgy synthesis process

Zhang, Shu-Ning (1); Wang, Fu-Li (1); You, Fu-Qiang (1); He, Da-Kuo (1)   

  1. (1) School of Information Science and Engineering, Northeastern University, Shenyang 110004, China; (2) Key Laboratory of Integrated Automation of Process Industry, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-01-15 Published:2013-06-20
  • Contact: Zhang, S.-N.
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Abstract: Due to lack of efficient measuring means, the real-time measurement is unattainable to the grain size distribution of cobalt oxalate in its hydrometallurgical synthesis process. A hybrid modeling method of the distribution was therefore proposed combining SVM with the dynamic mechanism model of the synthesis process to predict the grain size distribution. Analyzing the mechanism of synthesis process, the population balance equation and material balance were used to develop a dynamic model for the distribution, with SVM used to compensate for the error resulting from the dynamic characteristic in synthesis process, which could not be revealed by the dynamic mechanism model. Simulation analysis was verified that hybrid method is more effective in comparison with the dynamic mechanism model. The application of the proposed method to a practical industrial process showed its satisfactory results.

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