System for separating radioactive NA from Al

Details System for separating radioactive NA from Al System for separating radioactive NA from Al

1988-07-14

1990-01-16

Hunt, Brooks H.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423180, 423200, 252630, 252631, 252632, 376192, 376195, C22B 2610

Patent

active

048942081

ABSTRACT:
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.

REFERENCES:
The Determination of Sodium in Aluminium and its Alloys by Vacuum Distillation by McCamley, Scott and Smart, Analyst, vol. 76, p. 200 (04/51).

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