Separation of different isotopes of the same chemical element (preventing occurrence of critical conditions when producing fissile material G21; shielding from radioactivity G21F)

Child Classifications

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• B01D 59/02 Separation by phase transition
• B01D 59/10 Separation by diffusion
• B01D 59/20 Separation by centrifuging
• B01D 59/22 Separation by extracting
• B01D 59/28 Separation by chemical exchange
• B01D 59/34 Separation by photochemical methods
• B01D 59/36 Separation by biological methods
• B01D 59/38 Separation by electrochemical methods (in general B01J)
• B01D 59/44 Separation by mass spectrography (particle spectrometers or separator tubes H01J49/00)
• B01D 59/50 Separation involving two or more processes covered by different groups selected from groups B01D59/02, B01D59/10, B01D59/20, B01D59/22, B01D59/28, B01D59/34, B01D59/36, B01D59/38, B01D59/44