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| STUDIES ON MATHEMATICAL SIMULATION OF RARE EARTH EXTRACTIONⅡ. Steady State Feature of Fractional Extraction and Selection of Optimization Process |
| SHEN Yunyu; YING Weijuan; YA Wenhou (General Research Institute of Non-Ferrous Metals; Ministry of Metallurgical Industry; Beijing) |
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Cite this article:
SHEN Yunyu; YING Weijuan; YA Wenhou (General Research Institute of Non-Ferrous Metals; Ministry of Metallurgical Industry; Beijing). STUDIES ON MATHEMATICAL SIMULATION OF RARE EARTH EXTRACTIONⅡ. Steady State Feature of Fractional Extraction and Selection of Optimization Process. Acta Metall Sin, 1983, 19(1): 101-108.
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Abstract A study was made of the mathematical simulation of the steady state feature of the fractional extraction on the basis of the established extraction equilibria model of TbCl_3-DyCl_3-HCl-H_2O-1 mol P 204 (HDEHP, kerosene solution) system. A BASIC program has been written for calculating the solute concentrations in phases in different stages under given conditions of fractional extraction by iteration method. The optimization process of Tbseparation was selected with the aid of established objective function by direct Seeking method. The mathematical simulation was verified by comparison with experimental one. The relative error of the purity for Tb or Dy<1.6% and of recovery<4.5%. Thus, a mathematical simulation method of modelling the extraction equilibria, simulating the steady state feature of fractional extraction and selecting the optimization process may be available for the extraction separation of any binary metal.
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Received: 18 January 1983
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1 雅文厚;沈韵玉,金属学报,19(1983) ,B12．
2 Goto, T., Solvent Extraction, Proc. of the Int. Solvent Extraction Conf. ISEC 71, the Hague, April, 1971, Eds. Gregory, J. G.; Evans, B.; Weston, P. C., Sponsored by Soc. Chem. Ind., London, 1971, Vol. Ⅱ, p. 1011．
3 Sebenik, R. F.; Smutz, M., Ind. Eng. Chem., Process Des. Dev., 8(1969) , 225． |
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