Processes for the removal and recovery of minor elements in wet-process phosphoric acid
    27.
    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

    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。

    CHROMATOGRAPHIC SEPARATION OF SUGARS USING BLEND OF CATION EXCHANGE RESINS
    30.
    发明申请
    CHROMATOGRAPHIC SEPARATION OF SUGARS USING BLEND OF CATION EXCHANGE RESINS 有权
    使用交联树脂的混合物对葡萄糖进行色谱分离

    公开(公告)号:US20160194727A1

    公开(公告)日:2016-07-07

    申请号:US14909817

    申请日:2014-08-15

    Abstract: A chromatographic method for separating a sugar from a sugar-containing liquid feed mixture by: contacting the liquid feed mixture with a stratum of cation exchange resin comprising a crosslinked copolymer matrix functionalized with sulfonic acid groups, and recovering a first product stream from the stratum that has a higher purity of the sugar than present in the liquid feed mixture. The method is characterized by the stratum of cation exchange resin including: i) at least 80 wt % of cation exchange resin including alkaline earth counter ions, and ii) at least 5 wt % of cation exchange resin including alkali earth counter ions.

    Abstract translation: 1.一种用于从含糖液体进料混合物中分离糖的层析方法,该方法是将液体进料混合物与包含用磺酸基团官能化的交联共聚物基质的阳离子交换树脂层接触,并从层中回收第一产物流, 具有比存在于液体进料混合物中更高的糖纯度。 该方法的特征在于阳离子交换树脂层,其包括:i)至少80重量%的阳离子交换树脂,包括碱土金属离子,和ii)至少5重量%的包括碱土金属离子的阳离子交换树脂。

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