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Citation: Zho Jiaju, Xu Zhihong, Chen Zhichuan, Li Han. A MATHEMATIC SIMULATION OF THE COUNTER CURRENT EXTRACTION IN SYSTEM HEH(EHP)-KEROSENE-HNO₃-(Sm-Gd)(NO₃)₃[J]. Chinese Journal of Applied Chemistry, ;1985, 2(3): 55-61. shu

A MATHEMATIC SIMULATION OF THE COUNTER CURRENT EXTRACTION IN SYSTEM HEH(EHP)-KEROSENE-HNO₃-(Sm-Gd)(NO₃)₃

1.
1. Institute of Chemical Metallurgy, Academia Sinica;
2.
2. Chanchun Institute of Applied Chemistry, Academia Sinica

Received Date: 18 July 1984
Available Online: 26 February 1985

The experimental results of the extraction equlibrium and fractional counter current extraction in system HEH(EHP)-Kerosene-HNO₃-(Sm-Gd)(NO₃)₃ are reported. 96.7% of Sm and more than 99% of Gd were obtained in the raffinate and solvent phaserespectively. From the data obtained in the extraction equlibrium a semiempirical distribution model D_ia_i1Z_i2^aH_i3^aX_j^ai4Y_i5^a (i, j=1,2) has been deduced, which is simple in calculation with a certain accuracy. Non-linear equations for the distribution between aqueous and organic phases and the mass equilibrium in each stage for the counter current. extraction were given. The matrix method and FORTRAN program were introduced for the calculation. The calculated values of metal ion concentration, acidity and concentration of the extractants for each stage are in good agreement with the experimental ones.
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A MATHEMATIC SIMULATION OF THE COUNTER CURRENT EXTRACTION IN SYSTEM HEH(EHP)-KEROSENE-HNO3-(Sm-Gd)(NO3)3

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A MATHEMATIC SIMULATION OF THE COUNTER CURRENT EXTRACTION IN SYSTEM HEH(EHP)-KEROSENE-HNO₃-(Sm-Gd)(NO₃)₃