吉林大学学报(工学版) ›› 2004, Vol. ›› Issue (3): 427-432.

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Optimal control of rare earth countercurrent extraction process based on soft-sensor

YANG Hui, ZHANG Suyu, LI Jian, CHAI Tianyou   

  1. Research Center of Automation, Northeastern University, Shenyang 110004, China
  • Received:2004-01-30 Online:2004-07-01

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Abstract: Since the online measurement of the multi-component content can hardly be achieved in rare earth extraction production process. The soft-sensor technology was proposed to estimate the component content of rare earth elements in spot detection on line and develops optimal control of the product purity at two outlet of the countercurrent extraction separation process. Then the proposed method was applied to a production process to achieve automatic control for whole production process through using HAB to separate the extract Yttrium in a company,which can attain more than 99.5% purity in Y2O3 in first stage and raise 2% recovery in Y.

Key words: automatic control technology, rare earth, countercurrent extraction, neural network, soft-sensor, optimal control

CLC Number: 

  • TP273
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