METHOD AND APPARATUS FOR REMOVING ARSENIC FROM AN ARSENIC BEARING MATERIAL
    181.
    发明申请
    METHOD AND APPARATUS FOR REMOVING ARSENIC FROM AN ARSENIC BEARING MATERIAL 审中-公开
    从ARSENIC轴承材料中去除ARSENIC的方法和装置

    公开(公告)号:US20120138528A1

    公开(公告)日:2012-06-07

    申请号:US11958602

    申请日:2007-12-18

    Abstract: A method and apparatus for removing arsenic from an arsenic-bearing material. The method includes the steps of contracting an arsenic-bearing material with an arsenic leaching agent to form an arsenic-containing solution and arsenic-depleted solids. The leaching agent can be an inorganic salt, an inorganic acid, an organic acid, and/or an alkaline agent. The arsenic-depleted solids are separated from the arsenic-containing solution, which is contacted with a fixing agent to produce an arsenic-depleted solution and an arsenic-laden fixing agent. The fixing agent comprises a rare earth-containing compound that can include cerium, lanthanum, or praseodymium. The fixing agent is then separated from the arsenic-depleted solution. A recoverable metal in the arsenic-depleted solids, arsenic-containing solution or arsenic-depleted solution can be separated and recovered. Recoverable metals can include metal from Group IA, Group IIA, Group VIII and the transition metals.

    Abstract translation: 一种从含砷材料中除砷的方法和装置。 该方法包括以下步骤:用砷浸出剂收集含砷材料以形成含砷溶液和贫砷固体。 浸出剂可以是无机盐,无机酸,有机酸和/或碱性试剂。 将含砷的固体与含砷溶液分离,其与定影剂接触以产生贫砷溶液和含砷的固定剂。 固定剂包括可包括铈,镧或镨的含稀土化合物。 然后将固色剂与贫砷溶液分离。 可以分离和回收砷贫化固体,含砷溶液或贫砷溶液中的可回收金属。 可回收金属可以包括来自IA组,IIA族,VIII族和过渡金属的金属。

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