FIELD: metallurgy.
SUBSTANCE: method involves dissolution of Tc-Ru alloy, extraction of ruthenium fraction in the form of hydroxide, conversion of ruthenium hydroxide by means of annealing to RuO4 ruthenium oxide and its hydrogen reduction to metal. Alloy is dissolved in acid solution in presence of catalyst at bubbling through solution of ozone-oxygen or ozone-air mixture. Reduction of ruthenium oxide to metal is performed in hydrogen-inert gas mixture. As catalyst there used are argentum salts Ag(I) or cobalt salts Co(II).
EFFECT: reducing the quantity of nuclear waste formed during extraction of ruthenium, and explosion safety of that process.
5 cl, 1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR ISOLATING RUTHENIUM FROM IRRADIATED TECHNETIUM | 2004 |
|
RU2266871C1 |
| DISSOLVING METHOD OF ALLOY Tc-Ru | 2008 |
|
RU2380438C2 |
| METHOD OF REMOVING TECHNETIUM FROM RUTHENIUM PREPARATION | 2002 |
|
RU2223917C1 |
| METHOD FOR SEPARATING RUTHENIUM FROM CONCENTRATES CONTAINING PRECIOUS METALS | 2021 |
|
RU2758957C1 |
| METHOD FOR EXTRACTION RUTHENIUM FROM SPENT CATALYST IN FORM OF ALUMINIUM OXIDE LOADED WITH RUTHENIUM | 2013 |
|
RU2580580C1 |
| METHOD FOR SEPARATING TECHNETIUM OUT OF NITRATE SOLUTION | 1998 |
|
RU2194802C2 |
| METHOD FOR COMPLEX EXTRACTION OF METALLIC COBALT, RUTHENIUM AND ALUMINIUM FROM SPENT CATALYST Сo-Ru/AlO FOR FISCHER-TROPSCH SYNTHESIS | 2013 |
|
RU2580575C1 |
| PROCESS FOR SEPARATING RUTHENIUM FROM INSOLUBLE RESIDUES AFTER PROCESSING IRRADIATED NUCLEAR FUEL | 2004 |
|
RU2289636C2 |
| METHOD FOR PRODUCING SOLID RUTHENIUM NITROSYL NITRATE USING SPENT CATALYST CONTAINING RUTHENIUM | 2013 |
|
RU2580414C1 |
| METHOD OF PROCESSING IRRADIATED NUCLEAR FUEL | 2015 |
|
RU2603019C1 |
