利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

858 条记录 (耗时 0.02 秒)

    Process for using rare earths to remove oxyanions from aqueous streams
    90.
    发明公开
    Process for using rare earths to remove oxyanions from aqueous streams 审中-公开
    使用稀土类用于从水性流中除去含氧阴离子的方法

    公开(公告)号：EP2420477A1

    公开(公告)日：2012-02-22

    申请号：EP11185163.0

    申请日：2006-07-26

    申请人： Molycorp Minerals, LLC

    发明人： The designation of the inventor has not yet been filed

    IPC分类号： C02F1/42 ,  B01J20/32 ,  B01J20/06 ,  C02F1/28

    CPC分类号： B01J20/06 ,  B01J20/0207 ,  B01J20/08 ,  B01J20/12 ,  B01J20/14 ,  B01J20/3204 ,  B01J20/3208 ,  B01J20/3234 ,  B01J20/3236 ,  B01J2220/42 ,  B01J2220/58 ,  B01J2220/62 ,  C02F1/281 ,  C02F1/288 ,  C02F1/5236 ,  C02F2001/425 ,  C02F2101/006 ,  C02F2101/20 ,  C02F2101/22 ,  C02F2201/006 ,  C02F2307/06

    摘要： Disclosed is a composition, comprising: an insoluble rare earth oxyanion compound comprising a rare earth cation and an oxyanion having an element with an atomic number selected from the group consisting of 13, 22, 31, 32, 42, 44, 45, 49, 50, 52, 72, 75, 77, 78, 83, and 92; and a rare earth compound, wherein the insoluble rare earth oxyanion compound is derived from an aqueous phase reaction of the rare earth compound with the oxyanion.
    Also disclosed is a process for removing oxyanions of an element having an atomic number selected from the group consisting of 5, 13, 14, 22 to 25, 31, 32, 40 to 42, 44, 45, 49 to 52, 72 to 75, 77, 78, 82, 83 and 92 from an aqueous feed containing one or more of said oxyanions, which process comprises contacting said aqueous feed with an aqueous solution of one or more soluble rare earth compounds to precipitate one or more of said oxyanions from said feed and thereby produce an aqueous fluid having a reduced concentration of said oxyanions as compared to said feed.

    摘要翻译： 公开的是一种组合物，包括：不溶性稀土氧阴离子化合物，其包含稀土阳离子和含氧阴离子的元件具有与在选自13，22，31，32，42，44，45，49选择的原子数， 50，52，72，75，77，78，83，和92; 和稀土金属化合物，worin不溶的稀土氧阴离子化合物从在与氧阴离子稀土类化合物的wässrige相反应而得。 所以本发明公开了用于在具有选自的5，13，14，22至25，31，32，40至42，44，45，49至52，72至75选择的原子数的元素的去除含氧阴离子的方法 ，77，78，82，83和92在从进料wässrige含一个或多个所述含氧阴离子，该方法包括接触所述wässrige在一种或多种可溶性稀土化合物wässrige溶液与饲料以沉淀的一种或多种所述含氧阴离子的 所述进料，并由此在wässrige流体产生具有所述含氧阴离子的浓度降低相比，所述进料。