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Citation: Zhang Weixing, Li Han. A STUDY ON THE EFFECTIVE SEPARATION COEFFICIENT IN THE EXTRACTION SEPARATION FOR THREE-RARE EARTH SYSTEM[J]. Chinese Journal of Applied Chemistry, ;1988, 5(3): 59-63. shu

A STUDY ON THE EFFECTIVE SEPARATION COEFFICIENT IN THE EXTRACTION SEPARATION FOR THREE-RARE EARTH SYSTEM

Zhang Weixing ,
Li Han

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 19 February 1987
Available Online: 2 June 1987
Fund Project:

With computer simulation, the effective separation coefficient in the extraction separation Process for three rare-earth system has been studied. For separation of (A,B)from C, it is found that the effective separation coefficient β_A+B^C has a minimum value, β^* in the extraction section, which is inversely proportional to the total extraction ratio EM. For separation of A from (B,C), β_A^B+C has a minimum value, β^*1 in the stripping scetion, which is directly Proportional to the total extraction ratio E_M^t. It is also found that β^* (or β^*') is in good linear relation with total extraction ratio and logarithm of the outlet product ratio, β_cal^*=k₁+k₂E_M+k₃In_B₁/^A₁-β_cal^*'=k'₁+k'₂E'_M+k'₃In_{B_N}^C_N Based on the theory of counter current extraction, a method is developed in whichcthe effective separation coefficient is used to determine the parameter of the extraction separation process for three rare-earth system.
- Extraction separation,
- Rare earth,
- Computer simulation
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