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离子交换色谱法分离铀同位素是化学交换法的一种类型,该法可用于生产低浓缩铀,其成本比扩散法低。目前,日本在这一领域中处于领先地位,于1985年建成的2000kg分离功单位/年的中间工厂正在运行,其主要技术指标:同位素交换平衡常数1.0013;理论塔板高0.83mm;谱带移速1000mm/h;单级平衡时间3 s。达到上述指标的主要措施是使用了催化剂和具有高扩散速度的离子交换树脂。使交换速度提高1000倍以上。
Ion exchange chromatography to separate uranium isotopes is a type of chemical exchange that can be used to produce low-enriched uranium at lower costs than diffusion. At present, Japan is the leader in this field. The mid-scale plant of 2000kg SEU per year, which was completed in 1985, is in operation. The main technical indicators are: isotope exchange equilibrium constant 1.0013; theoretical plate height 0.83mm; band shift Speed 1000mm / h; single stage balance time 3s. The main measure to achieve the above targets is the use of catalysts and ion exchange resins with high diffusion rates. The exchange rate increased by more than 1000 times.