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    Water Softener Apparatus Including a Salt Level Indicator Device
    28.
    发明申请
    Water Softener Apparatus Including a Salt Level Indicator Device 有权

    公开(公告)号：US20230084245A1

    公开(公告)日：2023-03-16

    申请号：US17791638

    申请日：2021-01-20

    Applicant: Harvey Water Softeners Limited

    Inventor： W R Sargeant ,  G M Halligan

    IPC: G01F23/28 ,  C02F1/42 ,  B01J49/06 ,  B01J49/75 ,  B01J49/85 ,  G01F25/20

    Abstract: A water softener apparatus comprising a housing having a chamber for accommodating at least one compressed salt block having an elongated block form, the configuration accommodating the compressed salt block within the chamber with its longitudinal axis in a vertical orientation. The water softener apparatus includes a manually detachable front cover enclosing the chamber and a non-touch salt level indicator device arranged in or on the front cover of the housing above the chamber to determine a salt level from an upper end face of the compressed salt block accommodated in the chamber, the non-touch salt level indicator device determining the salt level from the upper end face of the compressed salt block through a wall of the front cover of the housing. The non-touch salt level indicator device is a battery powered device and the water softener apparatus is a non-electric powered water softener apparatus.

    Processes for the recovery of uranium from wet-process phosphoric acid using dual or single cycle continuous ion exchange approaches
    30.
    发明授权
    Processes for the recovery of uranium from wet-process phosphoric acid using dual or single cycle continuous ion exchange approaches 有权

    公开(公告)号：US11047022B2

    公开(公告)日：2021-06-29

    申请号：US16101807

    申请日：2018-08-13

    Applicant: OCP S.A.

    Inventor： William W Berry ,  Thomas E. Baroody ,  Driss Dhiba ,  Mounir El Mahdi

    IPC: C22B60/00 ,  C22B60/02 ,  B01J39/05 ,  B01J49/06 ,  B01J49/50 ,  B01J49/53 ,  C01B25/238 ,  C01G43/01 ,  C01G43/00 ,  B01J45/00 ,  B01J49/00 ,  C22B3/42 ,  C22B3/44 ,  C22C28/00

    Abstract: In alternative embodiments, the invention provides processes and methods for the recovery, removal or extracting of, and subsequent purification of uranium from a wet-process phosphoric acid using a continuous ion exchange processing approach, where the uranium is recovered from a phosphoric acid, or a phos-acid feedstock using either a dual or a single stage extraction methodology. In both cases an intermediate ammonium uranyl-tricarbonate solution is formed. In alternative embodiments, in the dual cycle approach, this solution is contacted in a second continuous ion exchange system with a strong anion exchange resin then subsequently recovered as an acidic uranyl solution that is further treated to produce an intermediate uranyl peroxide compound which is ultimately calcined to produce the final uranium oxide product. In alternative embodiments, in the single cycle case, the intermediate ammonium uranyl-tricarbonate solution is evaporated to decompose the ammonium carbonate and produce an intermediate uranium carbonate/oxide solid material. These solids are digested in an acid medium, and then processed in the same manner as the secondary regeneration solution from the dual cycle process to produce an intermediate uranyl peroxide that is calcined to produce a final uranium oxide product.

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