How to get the argon by cryogenic air decomposition

@inproceedings{2003HowTG,
  title={How to get the argon by cryogenic air decomposition},
  author={クンツ クリスティアン and ランケ ハラルト and グラットハール ラインハルト},
  year={2003}
}
The present invention relates to a method of obtaining the argon by cryogenic decomposition of air. Rectification unit (2, 4) has at least one air decomposition column (4), the column in the column longitudinally extending partition wall (5) of the first and second portions (6,7) divide. Introducing a fluid (3) having an oxygen and argon to the first portion (6). The flow (13) having an oxygen and argon from the second portion (7) is taken out in argon concentration 15% to 50%.