Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (Suppl): 69-74.doi: 10.3866/PKU.WHXB2014Ac09

• ARTICLE • Previous Articles     Next Articles

Numerical Optimization of Redistribution of Solute in Plutonium Metal during Zone Refining

HUANG Jun1,2, REN Qing-Bo1, XU Gang1, LIU Xun1, MENG Da-Qiao1   

  1. 1 Institute of Materials, China Academy of Engineering Physics, Mianyang 621900, Sichuan Province, P. R. China;
    2 Institute of Engineering Physics, Tsinghua University, Beijing 100084, P. R. China
  • Published:2015-05-20
  • Contact: MENG Da-Qiao


Based on the redistribution model of solutes for multi-zone refining, zone lengths were optimized to minimize the content of solute in the middle of the sample using a genetic algorithm from biological evolutionary theory. The redistribution of solute in the sample during multi-zone refining was computed with the optimized zone length and a constant zone length. The calculation results showed that the efficiency of zone refining with the optimized zone length was significantly better than that with the constant zone length. A low impurity concentration in the 80% part of the middle sample can be achieved after 15 passes of zone refining using the optimized zone lengths.

Key words: Redistribution model of solute, Genetic algorithm, Optimization, Molten zone length, Redistribution of solute