• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A chemical process of isotopic enrichment of uranium makes use of isotopic exchange between an aqueous phase loaded with uranium III and another phase charged with uranium IV. Reduction and oxidation of uranium in aqueous phase are carried out using the same electrolyzer. Reduction may be by zinc amalgam which is later electrolytically reduced.
    公开号:SU843705A3
    申请号:SU772452264
    申请日:1977-02-11
    公开日:1981-06-30
    发明作者:Обер Жак；Карль Морис；Нейж Роже
    申请人:Коммиссариат А Л"Энержи Атомик (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to methods for isotope chemical enrichment of uranium.
    A method is known for enriching uranium into one of its isotopes by contacting a liquid phase containing uranium (VI) compounds and uranium (IV) compounds. The process is carried out in countercurrent between the aqueous phase containing hydrochloric acid, lot, and the solid phase - a cation exchange resin containing uranium (IV), which is stripped from the resin into the aqueous phase with the oxidation of uranium (IV) to uranium (VI) followed by reduction of the II (VI) aqueous phase into U (IV) and 1 & transfer of U (IV) to the previously depleted phase of resin G13.
    This method does not give satisfactory results: stepwise exchange coefficients are small.
    Closest to the proposed technical essence and the achieved result is a method of isotope chemical enrichment of Ur. with a solution of U (IV), which is in organics, for isotopic exchange, followed by oxidation of a solution of uranium (III) to uranium (IV) and returning it to the beginning of the process Г2].
    The purpose of the invention is the reduction of energy consumption.
    This goal is achieved in that the method including the reduction of uranium (IV) compounds into uranium (III) with zinc amalgam, the isotope exchange between an aqueous solution of uranium (III) and a solution of uranium (IV), followed by oxidation of an aqueous solution of uranium (III), is carried out in the anode space of the diaphragm-electrolyzer, using an acidic aqueous solution of zinc salt as an electrolyte and feeding mercury to the cathode.
    In addition, the anode of the electrolyzer is made of lead, lead amalgam, graphite, mercury or tantalum; electrolysis is carried out from the concentration of zinc chloride in the electrolyte 4-5 N to 3-4 N.
    Redox electrolysis saves voltage up to 2 V.
    Uranium is oxidized by discharging ions upon contact with the anode. This anode has a redox potential higher than the redox potential. The PL of the potential of the U / U system, i.e., does not cause ion oxidation
    0.63 V when there is no current.
    The drawing shows a diagram of the method.
    The aqueous phase entering the anode compartment is a solution of HH hydrochloric acid, U (ill) in the form of ICE concentration of 1 M.
    As the electrolyte use an aqueous solution containing 4 N. 2пСС <^, 3 N. NSv. Mercury is fed to the cathode, which during electrolysis at a current density of 0.25 A / cm 1 turns into zinc amalgam with a content of 1.1-1.5%. Electrolysis is carried out until the content of zinc chloride in the electrolyte is 3 N. ZnC I_.
    权利要求:
    Claims (2)
    [1]
    3 ca, graphite, mercury or tantalum; electrolysis is carried out from the concentration of zinc chloride in the electrolyte 4–5 N to 3–4 N. Redox electrolysis saves voltages up to 2 V. Uranium is oxidized by discharging U ions upon contact with the anode. This anode has a redox potential higher than the redox potential of the system, i.e. 0.63 and does not cause the oxidation of U ions when there is no current. The drawing is a diagram of the implementation of the method. The aqueous phase entering the anode compartment is an HF solution of hydrochloric acid, and (ill) in the form of an ICB with a concentration of 1 M. An aqueous solution containing 4N is used as the electrolyte. EPSv 3 n. NA. Mercury is fed to the cathode, which during electrolysis at a current density of 0.25 A / cm turns into zinc amalgam with a content of 1.1-1.5%. The electrolysis is carried out until the electrolyte contains 3 n zinc chloride. ZnCBr. Claim 1. Investigative method of isotopic chemical enrichment of uranium, including reduction. ZnWg4A
    / ..
    1m Shz-Zl // C / 5 addition of a uranium compound (IVJ to uranium nil) with zinc amalgam, isotope exchange between an aqueous solution of uranium (III) and a solution of U (IV), followed by oxidation of uranium (Ml) to uranium (IV), which differs In order to reduce energy consumption, the oxidation of an aqueous solution of uranium (III) is carried out in the anode space of a diaphragm electrolyzer, using an acidic aqueous solution of a zinc salt as a electrolyte and passing mercury through the cathode. 2. A method according to claim 1, characterized in that the anode of the electrolyzer is made of lead, lead amalgam, graphite, mercury or tantalum. 3. The method according to claim 1 and 2, characterized in that the electrolysis is carried out on the concentration of zinc chloride in the electrolyte 4-5 N to 3-4 M. Sources of information taken into account in the examination 1. UK Patent No. 1120208, cl. On 01 D 59/00, 1968.
    [2]
    2.Patent of France, issued in the USSR according to application 2004326 / 23-26, cl. B 01 D 59/28, 02.26.73 (prototype).
    2n
    .
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    同族专利:
    公开号 | 公开日
    BR7700879A|1977-12-06|
    AU506903B2|1980-01-24|
    MX4731E|1982-08-24|
    IT1075557B|1985-04-22|
    DE2705895A1|1977-10-06|
    ES455866A1|1978-10-16|
    NZ183321A|1979-11-01|
    SE7701554L|1977-08-14|
    CA1088455A|1980-10-28|
    GB1541805A|1979-03-07|
    JPS588286B2|1983-02-15|
    FR2340766A1|1977-09-09|
    DE2705895C2|1986-05-22|
    FR2340766B1|1981-11-13|
    SE427530B|1983-04-18|
    OA05568A|1981-04-30|
    NO770459L|1977-08-16|
    JPS5298899A|1977-08-19|
    LU76749A1|1978-10-18|
    CH618890A5|1980-08-29|
    US4129481A|1978-12-12|
    NO145460C|1982-03-31|
    NO145460B|1981-12-21|
    FI770459A|1977-08-14|
    AU2222177A|1978-08-17|
    BE851365A|1977-08-11|
    FI60357B|1981-09-30|
    NL7701466A|1977-08-16|
    FI60357C|1982-01-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2787587A|1949-07-26|1957-04-02|Richard W Woodard|Isotope exchange process|
    FR1403198A|1963-06-21|1965-06-18|Asahi Chemical Ind|Process for separating and enriching isotopes|
    GB1096592A|1965-01-22|1967-12-29|Atomic Energy Authority Uk|Electrolytic reduction for solutions containing nuclear fuel material|
    US3616276A|1969-04-14|1971-10-26|Allied Chem|Process for changing the valence of a metal of variable valence in an organic solution|
    FR2065652A1|1969-10-30|1971-08-06|Commissariat Energie Atomique|Electrolytic prepn of uranium nitratesoln|
    FR2298361B1|1973-02-27|1977-04-29|Pierre Delvalle|US4188266A|1978-04-11|1980-02-12|Forman Richard A|Method and apparatus for changing the concentration of molecules or atoms|
    US4225396A|1978-10-10|1980-09-30|Kerr-Mcgee Corporation|Vanadium and uranium oxidation by controlled potential electrolysis|
    US4849075A|1986-02-05|1989-07-18|The Board Of Regents Of Illinois State University|Method of isotope enrichment|
    GB8719045D0|1987-08-12|1987-10-07|Atomic Energy Authority Uk|Liquid treatment process|
    US6137073A|1998-09-28|2000-10-24|Brown; Paul M.|Enrichment method for radioactive isotopes|
    US10196749B2|2014-05-12|2019-02-05|Johna Leddy|Lanthanide Electrochemistry|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7603986A|FR2340766B1|1976-02-13|1976-02-13|
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