FIELD: reprocessing and utilization of solid radioactive waste from atomic industry.
SUBSTANCE: plutonium is recovered from fiberglass aerosol boron-containing filter by alkaline opening of spent filtering material in presence of magnesium-containing reagent (e.g., magnesium carbonate) in mass ratio not less than 0.85 as calculated to magnesium and boron oxides. Then insoluble precipitate is treated with mixture of aqueous nitric and hydrofluoric acids. Obtained solution is purified from impurities by sorption method. Plutonium oxalate is deposited from purified solution and burned to obtain plutonium dioxide.
EFFECT: plutonium product with small boron content.
2 cl, 1 tbl, 5 ex
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