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7 条记录 (耗时 0.031 秒)

    Method for selectively removing antimony and bismuth from sulphuric acid solutions
    1.
    发明授权
    Method for selectively removing antimony and bismuth from sulphuric acid solutions 失效
    从硫酸溶液中选择性除去锑和铋的方法

    公开(公告)号：US5366715A

    公开(公告)日：1994-11-22

    申请号：US138024

    申请日：1993-10-19

    申请人： David B. Dreisinger ,  Brenna J. Y. Leong

    发明人： David B. Dreisinger ,  Brenna J. Y. Leong

    IPC分类号： B01D15/00 ,  B01D15/04 ,  C01B17/90 ,  C01G25/00 ,  C01G30/00 ,  C22B3/42 ,  C22B30/02 ,  C22B30/06 ,  C02F1/42 ,  C25C1/14

    CPC分类号： C01B17/908 ,  Y10S204/13 ,  Y10S210/912

    摘要： The present invention is concerned with a method for selectively removing antimony and bismuth from an impure sulphuric acid solution containing at least 50 g/L of acid and some concentration of ferric ion (for example copper refinery electrolyte), is disclosed. The method involves contacting the impure solution with a sufficient quantity of finely divided metallic copper so as to prereduce all ferric ion present in the solution to the ferrous oxidation state. The prereduced solution is then contacted with a chelating resin. The method avoids the deleterious loading of ferric iron onto the ion exchange resin and prevents the return of excessive amounts of chloride ion with the purified electrolyte.

    摘要翻译： 本发明涉及从含有至少50g / L的酸和一些浓度的铁离子（例如炼铜电解液）的不纯的硫酸溶液中选择性地除去锑和铋的方法。 该方法包括使不纯溶液与足量的细碎金属铜接触，以便将溶液中存在的所有铁离子预还原至亚铁氧化态。 然后将预还原的溶液与螯合树脂接触。 该方法避免了铁离子在离子交换树脂上的有害负载，并防止了过量的氯离子与纯化电解质的返回。

    Ion exchange and regeneration process for separation and removal of iron (III) ions from aqueous sulfuric acid metal ion-containing solutions
    2.
    发明授权
    Ion exchange and regeneration process for separation and removal of iron (III) ions from aqueous sulfuric acid metal ion-containing solutions 失效
    离子交换和再生过程用于从含硫酸金属离子溶液中分离和除去铁（III）离子

    公开(公告)号：US5948264A

    公开(公告)日：1999-09-07

    申请号：US19677

    申请日：1998-02-06

    申请人： David B. Dreisinger ,  D. Richard Shaw

    发明人： David B. Dreisinger ,  D. Richard Shaw

    IPC分类号： B01J39/12 ,  B01J39/20 ,  B01J49/00 ,  C02F1/42

    CPC分类号： C02F1/42 ,  B01J39/12 ,  B01J39/20 ,  B01J49/0008 ,  Y10S204/13

    摘要： An ion exchange separation, recovery and regeneration process for the control of iron is disclosed that can replace the conventional bleed stream process used in copper electrowinning. The disclosed process minimizes the loss of cobalt from the electrowinning circuit and can effect a lowering of the total iron concentration in the electrolyte circuit with an associated increase in current efficiency. The process captures the iron as iron(III) on an ion exchange medium containing a plurality of --CH(PO.sub.3 R.sub.2).sub.2 or --C(PO.sub.3 R.sub.2).sub.2 -- groups through which the divalvent metal ions pass. The iron(III) is then reduced with copper(I) to form iron(II) that is freed from the exchange medium, thereby permitting regeneration of the medium.

    摘要翻译： 公开了用于控制铁的离子交换分离，回收和再生过程，其可以替代用于铜电解提取中的常规渗流过程。 所公开的方法使得从电解沉积电路中的钴的损失最小化，并且可以相应地提高电流效率来降低电解质电路中的总铁浓度。 该方法在含有二价金属离子通过的多个-CH（PO 3 R 2）2或-C（PO 3 R 2）2 - 基团的离子交换介质上捕获铁作为铁（III）。 然后用铜（I）还原铁（III）以形成从交换介质中除去的铁（II），从而允许介质的再生。

    Process for electrowinning of copper matte
    5.
    发明授权
    Process for electrowinning of copper matte 失效
    铜锍电解冶金工艺

    公开(公告)号：US5622615A

    公开(公告)日：1997-04-22

    申请号：US582772

    申请日：1996-01-04

    申请人： Sharon K. Young ,  David B. Dreisinger ,  Jinxing Ji

    发明人： Sharon K. Young ,  David B. Dreisinger ,  Jinxing Ji

    IPC分类号： C22B15/14 ,  C22B15/00 ,  C25C1/12

    CPC分类号： C22B15/0071 ,  C25C1/12 ,  Y02P10/236

    摘要： A sulfur dioxide free process for the production of high purity metallic copper from copper-matte wherein copper-matte is leached under oxidizing conditions in a ferric-containing acid copper sulfate electrolyte leach assembly including one or more leach reactors to yield a copper-rich electrolyte, and copper cathode is produced in an electrowinning assembly which is physically decoupled from the leaching assembly and may include one or more electrowinning cells. The process operates at ambient pressure and temperatures less than the boiling point.

    摘要翻译： 一种不含二氧化硫的方法，用于从铜锍生产高纯度金属铜，其中铜氧化物在氧化条件下在含铁酸性硫酸铜电解质浸出组合物中浸出，其包括一个或多个浸提反应器以产生富铜电解质 ，并且铜电解液在与浸出组件物理分离的电解提取组件中产生并且可以包括一个或多个电解提取电池。 该过程在环境压力和低于沸点的温度下运行。