• 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:
    L'invention concerne la récupération de métaux lourds à partir de solutions hyperacides. Le procédé consiste en une complexation de ces métaux par des complexants organophosphorés polydentés, suivie de l'élimination du complexe métallique, sédimentation, filtration. Il s'applique notamment à la récupération de l'uranium et de terres rares de solutions d'acide phosphorique.
    公开号:SU1477245A3
    申请号:SU833657072
    申请日:1983-10-28
    公开日:1989-04-30
    发明作者:Эль Аид Ждид；Блази Пьер；Бессьер Жак；Шарль Трасез Жан；Экур Филипп
    申请人:Сека С.А. (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to methods for extracting uranium (VI) from phosphoric acid and can be used in the technology for producing uranium compounds.
    The purpose of the invention is to simplify the process by reducing the number of process steps.
    Example 1. Promixed phosphoric acid (30%), containing 6 "10 M uranium, is introduced into an apparatus made in the form of a vessel, in the upper part of which there is a discharge device, and the lower part is made of fritted glass.

    s
    The iron powder is introduced into the solution and then treated with 2-propen-1,2-diylphosphonic acid dilauryl ether in the amount of 2.7 × 10 3 M at 20 ° C.
    Thereafter, an achot is passed for 10 minutes, the resulting foam is collected and analyzed. The uranium content in the flotation concentrate was 7.6%. The degree of extraction of uranium is 83%.
    EXAMPLE 2 Analogously to Example 1, except for the use of a flotation reagent in an amount of 3.0 1CG M. The concentration of uranium in the reagent was 8.9%. The degree of extraction of uranium is 91%.
    PRI me R 3. Analogously to example 1, except that the flotation is carried out at 35 ° C. The concentration of uranium in the flotation reagent is 10.3%. The degree of extraction of uranium is 92%.
    EXAMPLE 4 A solution of 5.5 phosphoric acid containing UM of uranium in the form of uranyl acetate was added to the apparatus described in Example 1, iron powder was added to reduce uranium (VI) to uranium (IV), after which is treated with a mixture of ethylenediamine tetramethylene phosphonic acid and hexylimino dimethylene phosphonic acid. Purge the resulting mixture with nitrogen for 30 minutes and remove the foam. The degree of extraction of uranium is 80%.
    EXAMPLE 5 Analogously to Example 4, except that industrial phosphoric acid containing about 5 to 10 M urach is used as the initial solution.
    The degree of extraction of uranium is 78%.
    Thus, the present invention allows, as compared with an extraction method of extracting uranium from phosphoric acid, which provides for multi-stage contacting of the solution with the extractant,
    0
    five
    0
    as well as the subsequent multi-stage re-extraction, simplify the process by eliminating the multi-stage extraction and re-extraction of uranium.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A method for extracting uranium (VI) from phosphoric acid, including the reduction of uranium (VI) to uranium (IV) followed by contacting the initial solution with an organophosphorus compound, characterized in that, in order to simplify the process by reducing the number of process steps, as phosphorus - The compounds used are compounds selected from the group of 2-propane-, 2-diphosphonic acid dilauryl ether of the general formula
    BUT-P-CHj-C-P-OH
     SNg OS "H, 5
    WITH
    or mixtures of ethylenediaminetetramethylene-phosphonic acid of general formula
    NgRO, -СНгCH, -HjPOj
    N-CHj-CHj-N HjPOj-CHj CH, -H, P03
    with hexylaminodimethylenephosphonic acid of general formula
    CgHj3 N
    ; (W2-n2Po3
    CH2-I2P02
    and the contacting process is carried out by passing gas, after which the flotation concentrate enriched in uranium is separated.
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    同族专利:
    公开号 | 公开日
    FR2535217A1|1984-05-04|
    EP0108015A3|1986-04-02|
    FR2535217B1|1989-08-18|
    MA19936A1|1984-07-01|
    IL70042D0|1984-01-31|
    IL70042A|1987-10-30|
    OA07576A|1985-03-31|
    US4656012A|1987-04-07|
    EP0108015A2|1984-05-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2859092A|1953-02-05|1958-11-04|Richard H Bailes|Solvent extraction process for the recovery of metals from phosphoric acid|
    NL242785A|1958-09-06|1900-01-01|
    NL262953A|1960-04-06|1900-01-01|
    US4579720A|1965-08-24|1986-04-01|Plains Chemical Development Co.|Chelation|
    SU454836A1|1973-02-12|1975-09-05|Государственный научно-исследовательский и проектный институт редкометаллической промышленности|The method of extraction of metals from solutions of their salts by extraction|
    US3992294A|1974-01-07|1976-11-16|Hooker Chemicals & Plastics Corporation|Process for sequestering metal ions|
    US3993728A|1975-08-27|1976-11-23|The United States Of America As Represented By The United States Energy Research And Development Administration|Bidentate organophosphorus solvent extraction process for actinide recovery and partition|
    US4246637A|1978-06-26|1981-01-20|International Business Machines Corporation|Data processor input/output controller|
    US4278640A|1979-03-19|1981-07-14|International Minerals & Chemical Corporation|Method for solvent extraction of metallic mineral values from acidic solutions|
    FR2460960B1|1979-07-09|1983-12-09|Elf Aquitaine|
    EP0023173B1|1979-07-09|1983-12-14|Societe Nationale Elf Aquitaine |Diphosphonic and triphosphonic acid esters, their preparation and applications|
    US4316877A|1979-11-23|1982-02-23|Allied Corporation|Extraction of uranium values from phosphoric acid|
    CA1194320A|1981-06-15|1985-10-01|Paul L. Valint, Jr.|Liquid membrane process for uranium recovery|
    CA1195508A|1981-06-15|1985-10-22|Paul L. Valint, Jr.|Liquid membrane process for uranium recovery|FR2594429A1|1986-02-14|1987-08-21|Rhone Poulenc Chimie|METHOD FOR REMOVING LEAD FROM RARE EARTHS|
    JPH0534286B2|1986-08-29|1993-05-21|Sumitomo Metal Mining Co|
    DE68926310T2|1988-11-01|1996-10-24|Arch Dev Corp|METHOD FOR SEPARATING METALLIC IONS WITH PHOSPHONIC ACIDS AS COMPLEX IMAGERS|
    US5078894A|1990-04-30|1992-01-07|Arch Development Corporation|Formulations for iron oxides dissolution|
    FR2779711B1|1998-06-12|2000-07-07|Commissariat Energie Atomique|PROCESS FOR SEPARATING TRIVALENT LANTHANIDE CATIONS BY SELECTIVE COMPLEXATION|
    US8747786B2|2012-09-07|2014-06-10|Savannah River Nuclear Solutions, Llc|Ionic liquids as templating agents in formation of uranium-containing nanomaterials|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8218142A|FR2535217B1|1982-10-29|1982-10-29|PROCESS FOR THE RECOVERY OF HEAVY METALS FROM ACIDIC SOLUTIONS|
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