公开(公告)号：US09663375B2

公开(公告)日：2017-05-30

申请号：US14416261

申请日：2013-07-21

Applicant: K-TECHNOLOGIES, INC.

Inventor： William W. Berry ,  Thomas E. Baroody

IPC: C01B33/00 ,  C01B33/10 ,  B01J41/14 ,  C02F1/42 ,  C01C1/16 ,  C01F7/50 ,  C01B25/222 ,  C05B7/00 ,  B01J41/05 ,  B01J49/57 ,  C02F101/10 ,  C02F101/14 ,  C02F103/10 ,  C02F103/34

CPC classification number: C01B33/103 ,  B01J41/05 ,  B01J41/14 ,  B01J49/57 ,  C01B25/222 ,  C01B33/10 ,  C01C1/162 ,  C01F7/50 ,  C02F1/42 ,  C02F2001/422 ,  C02F2101/105 ,  C02F2101/14 ,  C02F2103/10 ,  C02F2103/34 ,  C02F2303/16 ,  C05B7/00

Abstract: In particular, in alternative embodiments, the invention provides for a method to recover silicofluoride and phosphate species from wastewaters, or barometric condenser waters, that are typically utilized in wet-process phosphoric acid facilities. The species are recovered via a continuous ion exchange approach that allows for economic recovery of the materials and especially with the silicofluoride component allows for the production of valuable industrial materials such as hydrofluoric acid and other fluoride salts as well as industrial-grade precipitated silica materials. Return of the treated waste water to the phos-acid plant allows for optimization of reagent usage.

公开(公告)号：US20150203939A1

公开(公告)日：2015-07-23

申请号：US14416271

申请日：2013-07-21

Applicant: K-TECHNOLOGIES, INC.

Inventor： William W. Berry ,  Thomas E. Baroody

IPC: C22B60/02 ,  C22B3/44 ,  C22C28/00 ,  C22B3/42

CPC classification number: C22B60/0265 ,  B01J39/05 ,  B01J45/00 ,  B01J49/00 ,  B01J49/06 ,  B01J49/50 ,  B01J49/53 ,  C01B25/238 ,  C01G43/003 ,  C01G43/01 ,  C22B3/42 ,  C22B3/44 ,  C22B60/0204 ,  C22B60/0217 ,  C22B60/0243 ,  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.

Abstract translation: 在替代实施方案中，本发明提供用于使用连续离子交换处理方法从湿法磷酸回收，除去或提取和随后纯化铀的方法和方法，其中铀从磷酸中回收，或 使用双级或单级萃取方法的磷酸原料。 在这两种情况下，形成中间铀 - 三碳酸二烷基酯溶液。 在替代实施方案中，在双循环方法中，该溶液在第二连续离子交换系统中与强阴离子交换树脂接触，然后随后作为酸性铀酰溶液回收，其进一步处理以产生最终煅烧的中间体铀酰过氧化物 以生产最终的铀氧化物产品。 在替代实施方案中，在单循环情况下，蒸发中间铀 - 碳酸三烷基酯溶液以分解碳酸铵并产生中间体铀碳酸盐/氧化物固体材料。 这些固体在酸性介质中消化，然后以与来自双循环过程的二次再生溶液相同的方式进行处理，以生产中间体二烷基过氧化物，其被煅烧以产生最终的铀氧化物产物。