发明名称 |
Method for treating metallic waste contaminated by radionuclides |
摘要 |
The present invention relates to methods for treating metallic waste contaminated by radionuclides, wherein one of said methods comprises deactivating the metallic waste in a liquid medium using an etching solution, a cleaning solution and water. The metallic waste is then melted in an induction furnace while adding refining fluxing agents thereto. The ingots are further submitted to a dosimetric control before solidifying the etching solution. The deactivation of the metallic waste in a liquid medium is first carried out using the etching solution that contains from 5 to 200 g/l of a strong acid and from 0.1 to 15 g/l of a sulphur-containing activator or corrosion inhibitor at a temperature of between 10 and 100 DEG C. The method further comprises applying the cleaning solution that contains from 2 to 100 g/l of a strong acid and from 1 to 20 g/l of an oxidant at a temperature of between 10 and 90 DEG C before carrying out the treatment using water. The metal ion concentration in the etching solution is monitored so that in case said concentration exceeds a predetermined value, a portion of said solution is removed for solidification while the corresponding portion of the remaining solution is strengthened using a strong acid. During the melting process, the content of refining fluxing agents relative to the metal is kept in a range of between 0.9 to 4 wt.%. |
申请公布号 |
AU3788997(A) |
申请公布日期 |
1998.11.27 |
申请号 |
AU19970037889 |
申请日期 |
1997.05.08 |
申请人 |
ZAKRYTOE AKTSIONERNOE OBSCHESTVO INNOVATSIONNAYA KOMPANIA "PANO |
发明人 |
EVGENY ALEXANDROVICH KONSTANTINOV;LEONID VASILEVICH KIZHNEROV;NIKOLAI ALEXEEVICH KORABLEV;DORIAN BORISOVICH SHUISKY;MIKHAIL SERGEEVICH OLEINIK;VLADIMIR VIKTOROVICH TROFIMOV;VALERY DANILOVICH GUSYNIN |
分类号 |
C22B7/00;G21F9/00;G21F9/30 |
主分类号 |
C22B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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