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    • 1. 发明申请
    • FRACTIONAL REGENERATION OF A WEAKLY ACIDIC ION EXCHANGER LOADED WITH BIVALENT METALLIC IONS
    • 与二价金属离子分数再生LOADED弱酸性离子交换
    • WO0243863A3
    • 2003-05-01
    • PCT/EP0112972
    • 2001-11-09
    • HENKEL KGAALEPA KLAUSKROEMER JENSDRONIOU PATRICKBROUWER JAN-WILLEMKUHM PETERMAUER DIETER
    • LEPA KLAUSKROEMER JENSDRONIOU PATRICKBROUWER JAN-WILLEMKUHM PETERMAUER DIETER
    • B01J49/00C23C22/86
    • C23C22/86B01J49/53
    • The invention relates to a method for the fractional regeneration of a weakly acidic ion exchanger loaded with bivalent metallic ions selected from nickel, zinc and manganese ions, obtaining a phosphoric acid solution of valuable substances, containing said metallic ions. At least two portions of aqueous phosphoric acid are successively loaded onto the ion exchanger, each successive portion of aqueous phosphoric acid having a weaker concentration of phosphoric acid than the precedent. After loading the first portion of aqueous phosphoric acid onto the ion exchanger in the form of a phosphoric acid solution of valuable substances containing metallic ions, a fraction of the concentrate is discharged. Said fraction contains at least 0.5 wt. % of metallic ions and the volume thereof is no larger than double the volume of the first portion of aqueous phosphoric acid. Further fractions of the regenerated product are collected, the respective volumes thereof not differing by more than 50 % of the volumes of the portions of aqueous phosphoric acid loaded onto the ion exchanger in order to produce the respective fractions of the regenerated product. After the last portion of aqueous phosphoric acid is loaded, a rewashing is carried out with enough water to drive the last portion of aqueous phosphoric acid from the ion exchanger and collect it as a last fraction of the regenerated product. Either so much phosphoric acid having a concentration of between 60 and 95 wt. % is deposited on the ion exchanger that the loss of phosphoric acid of the first fraction of the regenerated product is compensated for in relation to the first loaded portion of aqueous phosphoric acid and, for the next regeneration cycle, the fractions of the regenerated product which are obtained in the preceding cycle are loaded in the form of portions of aqueous phosphoric acid in the order obtained, or, the first fraction of the regenerated product collected following the discharge of the fraction of concentrate is mixed with such a quantity of concentrated phosphoric acid that the phosphoric acid concentration in said fraction of the regenerated product and the volume of said fraction of regenerated product correspond essentially to the phosphoric acid concentration and the volume of the original first portion of aqueous phosphoric acid before being loaded onto the ion exchanger. For a corresponding succeeding regeneration cycle of a weakly acidic ion exchanger loaded with the appropriate metallic ions, the individual fractions of the regenerated product from the preceding regeneration cycle are loaded onto the ion exchanger, in the order obtained, in the form of individual portions of aqueous phosphoric acid.
    • 与选自镍,锌和锰离子的分数再生选择的二价金属离子的方法加载的弱酸性离子交换剂,得到磷酸,含有这些金属离子有价值的产品的解决方案,其中,一个连续的离子交换放弃磷酸水溶液,其中每个相继的块中的至少两个部分 具有较低的酸浓度比前一个,磷酸水溶液,其中一个ausschleust磷酸水溶液的第一部分应用到比离子交换后浓缩液级分的磷酸金属含有至少0.5贵重材料的溶液。含有金属离子和它们的体积的%含离子 不大于磷酸水溶液的所述第一部分的两倍体积越大,则进一步再生级分通过没有相应的生成雷杰的体积的50%以上,其字段各自的体积 不同装填到磷酸水溶液的离子交换部分Nerat馏分,nachwäscht与至少这么多的水使最终部分从离子交换器置换的磷酸水溶液,并收集作为最后的再生部分,无论是在离子交换放弃磷酸水溶液的最后部分之后,从而 具有在60%至95%(重量)的范围内的浓度多磷酸应用于的第一再生馏分相对于所述第一不连续部的磷酸水溶液的磷酸 - 损失被补偿,然后用于下一个再生循环中,再生在前面的周期中获得 所获得的序列中的级分给出的磷酸水溶液,或排出浓缩液级分收集再生馏分浓磷酸的这样的量混合后的第一个的部分,即两个Konzentra 磷酸在再生馏分和再生部分的体积大致磷酸浓度和含水磷酸当量的离子交换剂装载的原始第一部分的体积,和一个用于的与适当的对应的随后的再生循环的灰 金属离子从所获得的序列中的前面的再生循环加载弱酸性离子交换剂再生的各个级分给出的磷酸水溶液的离子交换剂的各个部分。