C - Chemistry – Metallurgy – 23 – G
Patent
C - Chemistry, Metallurgy
23
G
C23G 1/10 (2006.01) C23G 1/36 (2006.01) G21F 9/00 (2006.01) G21F 9/04 (2006.01)
Patent
CA 2054236
ABSTRACT OF THE DISCLOSURE A method for dissolving radioactively contaminated surfaces of metal articles using a reagent of HBF4 acid with the addition of at least one oxidation agent, preferably hydrogen peroxide H2O2, for the efficient decontamination of radioactively contaminated metal articles. An optimum mixture of this reagent was about 5% HBF4 acid with the addition of about 0.5% by volume of H2O2. Radioactively contaminated lead plates, for example, were treated by this reagent, and the contaminated solution was used as an electrolyte without any further additive. The contaminated lead or lead oxide is deposited at the anode or cathode decontaminating the solution which may be returned to the process. If, instead of lead, the metal is copper, nickel, steel, silver or mercury or their alloys, the method for dissolving radioactively contaminated surfaces can be executed in the same way with the same reagent.
Equey Jean-Francois
Hanulik Jozef
Marks & Clerk
Recytec S.a.
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