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    Process for producing potassium carbonate
    2.
    发明授权
    Process for producing potassium carbonate 失效
    生产碳酸钾的方法

    公开(公告)号：US5449506A

    公开(公告)日：1995-09-12

    申请号：US271367

    申请日：1994-07-06

    Applicant: William W. Berry ,  Thomas E. Baroody ,  James M. Crawford

    Inventor： William W. Berry ,  Thomas E. Baroody ,  James M. Crawford

    IPC: C01C1/04 ,  C01D7/02 ,  C01D7/10 ,  C01F11/24 ,  C01D7/00

    CPC classification number: C01D7/02 ,  C01C1/04 ,  C01D7/10 ,  C01F11/24

    Abstract: A method for producing potassium carbonate using a continuous countercurrent exchange system. A continuous ion exchange system with resin in the ammonium form is flushed with a saturated potassium chloride solution which displaces the ammonium ion and replaces it with potassium. Ammonium carbonate is then passed through the ion exchanger to place the ammonium in the reserve form, by displacing the potassium, and produce a concentrated potassium carbonate solution. This process is done in a continuous countercurrent manner which allows maximum recovery of the potassium carbonate as a 15-18% by weight solution with minimum impurities, and at high throughput rates. The potassium carbonate solution is then removed, evaporated, dried, sized and stored for subsequent shipment. The ammonium chloride from the ion exchanger is treated with slaked lime to produce ammonium hydroxide, which in turn is reacted with carbon dioxide (from calcined limestone or an outside source) to regenerate ammonium carbonate for reuse in the ion exchanger. Calcium chloride is a co-product of the overall reaction.

    Abstract translation: 一种使用连续逆流交换系统生产碳酸钾的方法。 将具有铵形式的树脂的连续离子交换系统用饱和的氯化钾溶液冲洗，其将铵离子置换并用钾代替。 然后将碳酸铵通过离子交换剂，将铵置于储备形式中，通过置换钾并产生浓缩的碳酸钾溶液。 该方法以连续的逆流方式进行，其允许最大限度地回收作为具有最少杂质的15-18重量％溶液的碳酸钾，并以高产率。 然后除去碳酸钾溶液，蒸发，干燥，定型并储存以备后续装运。 来自离子交换剂的氯化铵用熟石灰处理以产生氢氧化铵，其又与二氧化碳（来自经煅烧的石灰石或外源）反应，以再生碳酸铵以在离子交换器中重新使用。 氯化钙是整体反应的共同产物。

    Processes for the removal and recovery of minor elements in wet-process phosphoric acid
    3.
    发明授权
    Processes for the removal and recovery of minor elements in wet-process phosphoric acid 有权
    在湿法磷酸中去除和回收少量元素的方法

    公开(公告)号：US09573810B2

    公开(公告)日：2017-02-21

    申请号：US14416264

    申请日：2013-07-21

    Applicant: K-TECHNOLOGIES, INC.

    Inventor： William W. Berry ,  Thomas E. Baroody

    IPC: C01B25/00 ,  C01B25/238 ,  C01B17/96 ,  C01F11/46 ,  B01J39/04 ,  B01J39/14 ,  B01J49/00 ,  B01D15/20 ,  B01D15/36

    CPC classification number: C01B25/238 ,  B01D15/203 ,  B01D15/362 ,  B01J39/05 ,  B01J39/14 ,  B01J49/53 ,  C01B17/96 ,  C01F11/46

    Abstract: In alternative embodiments, the invention provides processes and methods for the recovery or the removal of the so-called “Minor Elements” consisting of iron, aluminum and magnesium (expressed as oxides), from wet-process phosphoric acid using a continuous ion exchange approach. In alternative embodiments, use of processes and methods of the invention allows for the reduction of these Minor Elements with minimal phosphate losses and dilution in order to produce a phosphoric acid that is suitable for the production of fertilizer products such as world-class diammonium phosphate (DAP), merchant-grade phosphoric acid, superphosphoric acid, and other phosphoric acid products. Further, use of the invention would allow the use of lower grade phosphate rock or ore, which would greatly expand the potential phosphate rock reserve base for phosphate mining activities, and allow for better overall utilization of resources from a given developed mine site.

    Abstract translation: 在替代实施方案中，本发明提供了使用连续离子交换法从湿法磷酸回收或除去由铁，铝和镁（以氧化物形式）组成的所谓“次要元素”的方法和方法 。 在替代实施方案中，使用本发明的方法和方法允许以最小的磷酸盐损失和稀释来还原这些次要元素，以便产生适合于生产肥料产品的磷酸，例如世界级磷酸氢二铵（ DAP），商品级磷酸，超磷酸等磷酸产品。 此外，本发明的使用将允许使用较低等级的磷酸盐岩或矿石，这将大大扩大磷酸盐矿开采活动的潜在磷酸盐储备基础，并允许从给定的开发矿区更好地综合利用资源。

    PROCESSES FOR THE REMOVAL AND RECOVERY OF CADMIUM FROM WET-PROCESS PHOSPHORIC ACID
    5.
    发明公开
    PROCESSES FOR THE REMOVAL AND RECOVERY OF CADMIUM FROM WET-PROCESS PHOSPHORIC ACID 审中-公开

    公开(公告)号：US20240158888A1

    公开(公告)日：2024-05-16

    申请号：US18386213

    申请日：2023-11-01

    Applicant: K-Technologies, Inc.

    Inventor： William W. BERRY ,  Thomas E. BAROODY

    IPC: C22B3/00 ,  C01B25/238 ,  C02F1/42 ,  C02F1/52 ,  C22B3/42

    CPC classification number: C22B17/04 ,  C01B25/238 ,  C02F1/42 ,  C02F1/52 ,  C22B3/42 ,  C02F1/28

    Abstract: In alternative embodiments, provided are methods and processes for the removal of cadmium (Cd) from wet-process phosphoric acid that may contain Cd, including excessive amounts of Cd. The process developed is based on the application of commercially available ion exchange resins with the application of Continuous Ion Exchange (CIX) technology. In alternative embodiments, provided are processes and methods for the recovery and/or the removal of cadmium from wet-process phosphoric acid using a continuous ion exchange approach. In alternative embodiments, use of processes and methods as provided herein allows for the reduction of cadmium metal contaminants with minimal phosphate losses and dilution in order to produce a phosphoric acid that is suitable for the production of fertilizers and phosphoric acid products, such as world-class diammonium phosphate fertilizer (DAP), merchant-grade phosphoric acid, super-phosphoric acid, and other phosphoric acid products.

    Processes for the removal and recovery of cadmium from wet-process phosphoric acid
    6.
    发明授权
    Processes for the removal and recovery of cadmium from wet-process phosphoric acid 有权

    公开(公告)号：US11512367B2

    公开(公告)日：2022-11-29

    申请号：US17616375

    申请日：2020-06-03

    Applicant: K-Technologies, Inc.

    Inventor： William W. Berry ,  Thomas E. Baroody

    IPC: C22B3/00 ,  C01B25/238 ,  C02F1/42 ,  C02F1/52 ,  C22B3/42 ,  C02F1/28 ,  C02F9/00 ,  C02F101/20

    Abstract: In alternative embodiments, provided are methods and processes for the removal of cadmium (Cd) from wet-process phosphoric acid that may contain Cd, including excessive amounts of Cd. The process developed is based on the application of commercially available ion exchange resins with the application of Continuous Ion Exchange (CIX) technology. In alternative embodiments, provided are processes and methods for the recovery and/or the removal of cadmium from wet-process phosphoric acid using a continuous ion exchange approach. In alternative embodiments, use of processes and methods as provided herein allows for the reduction of cadmium metal contaminants with minimal phosphate losses and dilution in order to produce a phosphoric acid that is suitable for the production of fertilizers and phosphoric acid products, such as world-class diammonium phosphate fertilizer (DAP), merchant-grade phosphoric acid, super-phosphoric acid, and other phosphoric acid products.

    PROCESSES FOR THE REMOVAL AND RECOVERY OF CADMIUM FROM WET-PROCESS PHOSPHORIC ACID
    7.
    发明申请
    PROCESSES FOR THE REMOVAL AND RECOVERY OF CADMIUM FROM WET-PROCESS PHOSPHORIC ACID 有权

    公开(公告)号：US20220325377A1

    公开(公告)日：2022-10-13

    申请号：US17616375

    申请日：2020-06-03

    Applicant: K-Technologies, Inc.

    Inventor： William W. BERRY ,  Thomas E. BAROODY

    IPC: C22B3/00 ,  C01B25/238 ,  C22B3/42

    Abstract: In alternative embodiments, provided are methods and processes for the removal of cadmium (Cd) from wet-process phosphoric acid that may contain Cd, including excessive amounts of Cd. The process developed is based on the application of commercially available ion exchange resins with the application of Continuous Ion Exchange (CIX) technology. In alternative embodiments, provided are processes and methods for the recovery and/or the removal of cadmium from wet-process phosphoric acid using a continuous ion exchange approach. In alternative embodiments, use of processes and methods as provided herein allows for the reduction of cadmium metal contaminants with minimal phosphate losses and dilution in order to produce a phosphoric acid that is suitable for the production of fertilizers and phosphoric acid products, such as world-class diammonium phosphate fertilizer (DAP), merchant-grade phosphoric acid, super-phosphoric acid, and other phosphoric acid products.

    PROCESSES FOR THE RECOVERY OF URANIUM FROM WET-PROCESS PHOSPHORIC ACID USING DUAL OR SINGLE CYCLE CONTINUOUS ION EXCHANGE APPROACHES
    10.
    发明申请
    PROCESSES FOR THE RECOVERY OF URANIUM FROM WET-PROCESS PHOSPHORIC ACID USING DUAL OR SINGLE CYCLE CONTINUOUS ION EXCHANGE APPROACHES 审中-公开

    公开(公告)号：US20190078176A1

    公开(公告)日：2019-03-14

    申请号：US16101807

    申请日：2018-08-13

    Applicant: K-Technologies, Inc. ,  OCP S.A.

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

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

    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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