METHOD FOR REMOVING IRON IN THE MANUFACTURE OF PHOSPHORIC ACID
    1.
    发明申请
    METHOD FOR REMOVING IRON IN THE MANUFACTURE OF PHOSPHORIC ACID 有权
    在磷酸盐制造中去除铁的方法

    公开(公告)号:US20160289075A1

    公开(公告)日:2016-10-06

    申请号:US15096080

    申请日:2016-04-11

    摘要: In the manufacture of phosphoric acid from ore, the typical ore comprises minerals containing phosphorus and calcium along with varied amounts of other elements. Certain ores have substantial iron content which needs to be removed in order to produce quality phosphoric acid product. An improved method and associated chemical processing plant are disclosed for removing this iron. The method involves both reducing and adding oxalic acid to wet process phosphoric acid produced using an otherwise conventional manufacturing process. Iron oxalate precipitate is created which can then conveniently be separated therefrom.

    摘要翻译: 在从矿石制造磷酸的过程中,典型的矿石含有含磷和钙的矿物质以及不同量的其他元素。 某些矿石需要大量的铁含量才能生产出优质的磷酸产品。 公开了一种改进的方法和相关的化学处理装置,用于除去该铁。 该方法包括使用另外的常规制造方法还原和添加草酸至湿法制备的磷酸。 产生铁草酸盐沉淀物,然后可方便地从其中分离出来。