SILVER RECOVERY FROM RADIOACTIVE WASTE GENERATED DUE TO THE DISPOSITION OF SILVER-CONTAINING PRODUCTS

The studies performed resulted in the development of a method enabling silver recovery from radioactively contaminated silver-containing products. This method includes the following stages: preliminary decontamination of products, dissolution of silver product fragments in a nitric acid solution, production of finely dispersed silver by displacement of silver metal with copper, submerged melting of finely dispersed silver at a temperature of at least 960 °С. To reduce the operating costs, evaluated was the feasibility of silver recovery from its compounds (chloride, sulphate and oxide).

 

Keywords: radioactive waste, decontamination, silver, radioactive contamination, precipitation, silver recovery, niello, remelting, bars.

Kuznetsova N. А., Sakhnenko О. А., Kharlova А. G., Lyzlova Ye. V., Zimin P. Yu. Silver recovery from radioactive waste generated due to the disposition of silver-containing products. Radioactive Waste, 2021, no. 3 (16), pp. 12—19. DOI: 10.25283/2587-9707-2021-3-12-19. (In Russian).