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1. 发明授权

US4894208A System for separating radioactive NA from Al 失效
标题翻译：将放射性NA与Al分离的系统
公开(公告)号：US4894208A
公开(公告)日：1990-01-16
申请号：US219092
申请日：1988-07-14
申请人： Henry C. Griffin , Thomas D. Steiger
发明人： Henry C. Griffin , Thomas D. Steiger
IPC分类号： C22B21/06 , C22B26/10
CPC分类号： C22B21/06 , C22B26/10
摘要： A system for extracting sodium, particularly radioactive .sup.22 Na, from aluminum utilizes a monel exhaust system for exhausting sodium vapor emitted from a molten aluminum target, in a draft of helium gas. The aluminum target is heated until it is melted in a graphite support cup. The graphite support does not react with the sodium. Moreover, the graphite is understood to be permeable to the helium gas, its porosity being believed to provide the significant advantage that the graphite holder will not absorb much of the sodium vapor. The use of graphite avoids a disadvantageous monel-aluminum reaction whereby an alloy from which sodium cannot be distilled is formed. The resulting sodium vapor is precipitated in a monel exhaust tube which is subjected to temperature control. Sodium can be rinsed from the monel exhaust tube with water.
摘要翻译：用于从铝中提取钠，特别是放射性的22Na的系统利用一种蒙乃尔排气系统来排出在熔融铝靶中释放出的钠蒸气。铝靶被加热直到其在石墨支撑杯中熔化。石墨载体不与钠反应。此外，石墨被理解为对氦气是可渗透的，其孔隙度被认为提供了显着的优点，即石墨保持器不会吸收大量的钠蒸气。石墨的使用避免了不利的蒙乃铝反应，从而形成不能蒸馏钠的合金。所得的钠蒸气在经受温度控制的monel排气管中析出。钠可用水从monel排气管冲洗。

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